Merge bc8b3856eb into 1da1e644ed

models/migrations/migrations.go

@@ -398,6 +398,7 @@ func prepareMigrationTasks() []*migration {
 		// Gitea 1.25.0 ends at migration ID number 322 (database version 323)
 
 		newMigration(323, "Add support for actions concurrency", v1_26.AddActionsConcurrency),
+		newMigration(324, "Add new table project_workflow", v1_26.AddProjectWorkflow),
 	}
 	return preparedMigrations
 }

models/migrations/v1_26/v324.go

@@ -0,0 +1,25 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_26
+
+import (
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"xorm.io/xorm"
+)
+
+func AddProjectWorkflow(x *xorm.Engine) error {
+	type ProjectWorkflow struct {
+		ID              int64
+		ProjectID       int64              `xorm:"INDEX"`
+		WorkflowEvent   string             `xorm:"INDEX"`
+		WorkflowFilters string             `xorm:"TEXT JSON"`
+		WorkflowActions string             `xorm:"TEXT JSON"`
+		Enabled         bool               `xorm:"DEFAULT true"`
+		CreatedUnix     timeutil.TimeStamp `xorm:"created"`
+		UpdatedUnix     timeutil.TimeStamp `xorm:"updated"`
+	}
+
+	return x.Sync(&ProjectWorkflow{})
+}

models/project/column.go

@@ -46,6 +46,9 @@ type Column struct {
 	Color   string `xorm:"VARCHAR(7)"`
 
 	ProjectID int64 `xorm:"INDEX NOT NULL"`
+
+	Project *Project `xorm:"-"`
+
 	CreatorID int64 `xorm:"NOT NULL"`
 
 	NumIssues int64 `xorm:"-"`
@@ -59,6 +62,19 @@ func (Column) TableName() string {
 	return "project_board" // TODO: the legacy table name should be project_column
 }
 
+func (c *Column) LoadProject(ctx context.Context) error {
+	if c.Project != nil {
+		return nil
+	}
+
+	project, err := GetProjectByID(ctx, c.ProjectID)
+	if err != nil {
+		return err
+	}
+	c.Project = project
+	return nil
+}
+
 func (c *Column) GetIssues(ctx context.Context) ([]*ProjectIssue, error) {
 	issues := make([]*ProjectIssue, 0, 5)
 	if err := db.GetEngine(ctx).Where("project_id=?", c.ProjectID).
@@ -213,6 +229,18 @@ func GetColumn(ctx context.Context, columnID int64) (*Column, error) {
 	return column, nil
 }
 
+func GetColumnByProjectIDAndColumnID(ctx context.Context, projectID, columnID int64) (*Column, error) {
+	column := new(Column)
+	has, err := db.GetEngine(ctx).Where("project_id=? AND id=?", projectID, columnID).Get(column)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrProjectColumnNotExist{ProjectID: projectID, ColumnID: columnID}
+	}
+
+	return column, nil
+}
+
 // UpdateColumn updates a project column
 func UpdateColumn(ctx context.Context, column *Column) error {
 	var fieldToUpdate []string

models/project/project.go

@@ -46,6 +46,7 @@ const (
 type ErrProjectNotExist struct {
 	ID     int64
 	RepoID int64
+	Name   string
 }
 
 // IsErrProjectNotExist checks if an error is a ErrProjectNotExist
@@ -55,6 +56,9 @@ func IsErrProjectNotExist(err error) bool {
 }
 
 func (err ErrProjectNotExist) Error() string {
+	if err.RepoID > 0 && len(err.Name) > 0 {
+		return fmt.Sprintf("projects does not exist [repo_id: %d, name: %s]", err.RepoID, err.Name)
+	}
 	return fmt.Sprintf("projects does not exist [id: %d]", err.ID)
 }
 
@@ -64,7 +68,8 @@ func (err ErrProjectNotExist) Unwrap() error {
 
 // ErrProjectColumnNotExist represents a "ErrProjectColumnNotExist" kind of error.
 type ErrProjectColumnNotExist struct {
-	ColumnID int64
+	ColumnID  int64
+	ProjectID int64
 }
 
 // IsErrProjectColumnNotExist checks if an error is a ErrProjectColumnNotExist
@@ -74,6 +79,9 @@ func IsErrProjectColumnNotExist(err error) bool {
 }
 
 func (err ErrProjectColumnNotExist) Error() string {
+	if err.ProjectID > 0 {
+		return fmt.Sprintf("project column does not exist [project_id: %d, column_id: %d]", err.ProjectID, err.ColumnID)
+	}
 	return fmt.Sprintf("project column does not exist [id: %d]", err.ColumnID)
 }
 
@@ -302,6 +310,19 @@ func GetProjectByID(ctx context.Context, id int64) (*Project, error) {
 	return p, nil
 }
 
+// GetProjectByName returns the projects in a repository
+func GetProjectByName(ctx context.Context, repoID int64, name string) (*Project, error) {
+	p := new(Project)
+	has, err := db.GetEngine(ctx).Where("repo_id=? AND title=?", repoID, name).Get(p)
+	if err != nil {
+		return nil, err
+	} else if !has {
+		return nil, ErrProjectNotExist{RepoID: repoID, Name: name}
+	}
+
+	return p, nil
+}
+
 // GetProjectForRepoByID returns the projects in a repository
 func GetProjectForRepoByID(ctx context.Context, repoID, id int64) (*Project, error) {
 	p := new(Project)

models/project/workflows.go

@@ -0,0 +1,241 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"context"
+	"fmt"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/timeutil"
+)
+
+type WorkflowEvent string
+
+const (
+	WorkflowEventItemOpened             WorkflowEvent = "item_opened"
+	WorkflowEventItemAddedToProject     WorkflowEvent = "item_added_to_project"
+	WorkflowEventItemRemovedFromProject WorkflowEvent = "item_removed_from_project"
+	WorkflowEventItemReopened           WorkflowEvent = "item_reopened"
+	WorkflowEventItemClosed             WorkflowEvent = "item_closed"
+	WorkflowEventItemColumnChanged      WorkflowEvent = "item_column_changed"
+	WorkflowEventCodeChangesRequested   WorkflowEvent = "code_changes_requested"
+	WorkflowEventCodeReviewApproved     WorkflowEvent = "code_review_approved"
+	WorkflowEventPullRequestMerged      WorkflowEvent = "pull_request_merged"
+)
+
+var workflowEvents = []WorkflowEvent{
+	WorkflowEventItemOpened,
+	WorkflowEventItemAddedToProject,
+	WorkflowEventItemRemovedFromProject,
+	WorkflowEventItemReopened,
+	WorkflowEventItemClosed,
+	WorkflowEventItemColumnChanged,
+	WorkflowEventCodeChangesRequested,
+	WorkflowEventCodeReviewApproved,
+	WorkflowEventPullRequestMerged,
+}
+
+func GetWorkflowEvents() []WorkflowEvent {
+	return workflowEvents
+}
+
+func IsValidWorkflowEvent(event string) bool {
+	for _, we := range workflowEvents {
+		if we.EventID() == event {
+			return true
+		}
+	}
+	return false
+}
+
+func (we WorkflowEvent) LangKey() string {
+	switch we {
+	case WorkflowEventItemOpened:
+		return "projects.workflows.event.item_opened"
+	case WorkflowEventItemAddedToProject:
+		return "projects.workflows.event.item_added_to_project"
+	case WorkflowEventItemRemovedFromProject:
+		return "projects.workflows.event.item_removed_from_project"
+	case WorkflowEventItemReopened:
+		return "projects.workflows.event.item_reopened"
+	case WorkflowEventItemClosed:
+		return "projects.workflows.event.item_closed"
+	case WorkflowEventItemColumnChanged:
+		return "projects.workflows.event.item_column_changed"
+	case WorkflowEventCodeChangesRequested:
+		return "projects.workflows.event.code_changes_requested"
+	case WorkflowEventCodeReviewApproved:
+		return "projects.workflows.event.code_review_approved"
+	case WorkflowEventPullRequestMerged:
+		return "projects.workflows.event.pull_request_merged"
+	default:
+		return string(we)
+	}
+}
+
+func (we WorkflowEvent) EventID() string {
+	return string(we)
+}
+
+type WorkflowFilterType string
+
+const (
+	WorkflowFilterTypeIssueType    WorkflowFilterType = "issue_type"    // issue, pull_request, etc.
+	WorkflowFilterTypeSourceColumn WorkflowFilterType = "source_column" // source column for item_column_changed event
+	WorkflowFilterTypeTargetColumn WorkflowFilterType = "target_column" // target column for item_column_changed event
+	WorkflowFilterTypeLabels       WorkflowFilterType = "labels"        // filter by issue/PR labels
+)
+
+type WorkflowFilter struct {
+	Type  WorkflowFilterType `json:"type"`
+	Value string             `json:"value"`
+}
+
+type WorkflowActionType string
+
+const (
+	WorkflowActionTypeColumn       WorkflowActionType = "column"        // add the item to the project's column
+	WorkflowActionTypeAddLabels    WorkflowActionType = "add_labels"    // choose one or more labels
+	WorkflowActionTypeRemoveLabels WorkflowActionType = "remove_labels" // choose one or more labels
+	WorkflowActionTypeIssueState   WorkflowActionType = "issue_state"   // change the issue state (reopen/close)
+)
+
+type WorkflowAction struct {
+	Type  WorkflowActionType `json:"type"`
+	Value string             `json:"value"`
+}
+
+// WorkflowEventCapabilities defines what filters and actions are available for each event
+type WorkflowEventCapabilities struct {
+	AvailableFilters []WorkflowFilterType `json:"available_filters"`
+	AvailableActions []WorkflowActionType `json:"available_actions"`
+}
+
+// GetWorkflowEventCapabilities returns the capabilities for each workflow event
+func GetWorkflowEventCapabilities() map[WorkflowEvent]WorkflowEventCapabilities {
+	return map[WorkflowEvent]WorkflowEventCapabilities{
+		WorkflowEventItemOpened: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeIssueType, WorkflowFilterTypeLabels},
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels},
+		},
+		WorkflowEventItemAddedToProject: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeIssueType, WorkflowFilterTypeLabels},
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels, WorkflowActionTypeIssueState},
+		},
+		WorkflowEventItemRemovedFromProject: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeIssueType, WorkflowFilterTypeLabels},
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels, WorkflowActionTypeIssueState},
+		},
+		WorkflowEventItemReopened: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeIssueType, WorkflowFilterTypeLabels},
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels},
+		},
+		WorkflowEventItemClosed: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeIssueType, WorkflowFilterTypeLabels},
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels},
+		},
+		WorkflowEventItemColumnChanged: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeIssueType, WorkflowFilterTypeSourceColumn, WorkflowFilterTypeTargetColumn, WorkflowFilterTypeLabels},
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels, WorkflowActionTypeIssueState},
+		},
+		WorkflowEventCodeChangesRequested: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeLabels}, // only applies to pull requests
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels},
+		},
+		WorkflowEventCodeReviewApproved: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeLabels}, // only applies to pull requests
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels},
+		},
+		WorkflowEventPullRequestMerged: {
+			AvailableFilters: []WorkflowFilterType{WorkflowFilterTypeLabels}, // only applies to pull requests
+			AvailableActions: []WorkflowActionType{WorkflowActionTypeColumn, WorkflowActionTypeAddLabels, WorkflowActionTypeRemoveLabels},
+		},
+	}
+}
+
+type Workflow struct {
+	ID              int64
+	ProjectID       int64              `xorm:"INDEX"`
+	Project         *Project           `xorm:"-"`
+	WorkflowEvent   WorkflowEvent      `xorm:"INDEX"`
+	WorkflowFilters []WorkflowFilter   `xorm:"TEXT JSON"`
+	WorkflowActions []WorkflowAction   `xorm:"TEXT JSON"`
+	Enabled         bool               `xorm:"DEFAULT true"`
+	CreatedUnix     timeutil.TimeStamp `xorm:"created"`
+	UpdatedUnix     timeutil.TimeStamp `xorm:"updated"`
+}
+
+// TableName overrides the table name used by ProjectWorkflow to `project_workflow`
+func (Workflow) TableName() string {
+	return "project_workflow"
+}
+
+func (p *Workflow) LoadProject(ctx context.Context) error {
+	if p.Project != nil || p.ProjectID <= 0 {
+		return nil
+	}
+	project, err := GetProjectByID(ctx, p.ProjectID)
+	if err != nil {
+		return err
+	}
+	p.Project = project
+	return nil
+}
+
+func (p *Workflow) Link(ctx context.Context) string {
+	if err := p.LoadProject(ctx); err != nil {
+		log.Error("ProjectWorkflow Link: %v", err)
+		return ""
+	}
+	return p.Project.Link(ctx) + fmt.Sprintf("/workflows/%d", p.ID)
+}
+
+func init() {
+	db.RegisterModel(new(Workflow))
+}
+
+func FindWorkflowsByProjectID(ctx context.Context, projectID int64) ([]*Workflow, error) {
+	workflows := make([]*Workflow, 0)
+	if err := db.GetEngine(ctx).Where("project_id=?", projectID).Find(&workflows); err != nil {
+		return nil, err
+	}
+	return workflows, nil
+}
+
+func GetWorkflowByID(ctx context.Context, id int64) (*Workflow, error) {
+	p, exist, err := db.GetByID[Workflow](ctx, id)
+	if err != nil {
+		return nil, err
+	}
+	if !exist {
+		return nil, db.ErrNotExist{Resource: "ProjectWorkflow", ID: id}
+	}
+	return p, nil
+}
+
+func CreateWorkflow(ctx context.Context, wf *Workflow) error {
+	return db.Insert(ctx, wf)
+}
+
+func UpdateWorkflow(ctx context.Context, wf *Workflow) error {
+	_, err := db.GetEngine(ctx).ID(wf.ID).Cols("workflow_filters", "workflow_actions").Update(wf)
+	return err
+}
+
+func DeleteWorkflow(ctx context.Context, id int64) error {
+	_, err := db.GetEngine(ctx).ID(id).Delete(&Workflow{})
+	return err
+}
+
+func EnableWorkflow(ctx context.Context, id int64) error {
+	_, err := db.GetEngine(ctx).ID(id).Cols("enabled").Update(&Workflow{Enabled: true})
+	return err
+}
+
+func DisableWorkflow(ctx context.Context, id int64) error {
+	_, err := db.GetEngine(ctx).ID(id).Cols("enabled").Update(&Workflow{Enabled: false})
+	return err
+}

models/project/workflows_test.go

@@ -0,0 +1,310 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package project
+
+import (
+	"strconv"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsValidWorkflowEvent(t *testing.T) {
+	tests := []struct {
+		event string
+		valid bool
+	}{
+		{string(WorkflowEventItemOpened), true},
+		{string(WorkflowEventItemClosed), true},
+		{string(WorkflowEventItemReopened), true},
+		{string(WorkflowEventItemAddedToProject), true},
+		{string(WorkflowEventItemRemovedFromProject), true},
+		{string(WorkflowEventItemColumnChanged), true},
+		{string(WorkflowEventCodeChangesRequested), true},
+		{string(WorkflowEventCodeReviewApproved), true},
+		{string(WorkflowEventPullRequestMerged), true},
+		{"invalid_event", false},
+		{"", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.event, func(t *testing.T) {
+			result := IsValidWorkflowEvent(tt.event)
+			assert.Equal(t, tt.valid, result, "Event: %s", tt.event)
+		})
+	}
+}
+
+func TestWorkflowEventLangKey(t *testing.T) {
+	tests := []struct {
+		event   WorkflowEvent
+		langKey string
+	}{
+		{WorkflowEventItemOpened, "projects.workflows.event.item_opened"},
+		{WorkflowEventItemClosed, "projects.workflows.event.item_closed"},
+		{WorkflowEventItemReopened, "projects.workflows.event.item_reopened"},
+		{WorkflowEventItemAddedToProject, "projects.workflows.event.item_added_to_project"},
+		{WorkflowEventItemRemovedFromProject, "projects.workflows.event.item_removed_from_project"},
+		{WorkflowEventItemColumnChanged, "projects.workflows.event.item_column_changed"},
+		{WorkflowEventCodeChangesRequested, "projects.workflows.event.code_changes_requested"},
+		{WorkflowEventCodeReviewApproved, "projects.workflows.event.code_review_approved"},
+		{WorkflowEventPullRequestMerged, "projects.workflows.event.pull_request_merged"},
+	}
+
+	for _, tt := range tests {
+		t.Run(string(tt.event), func(t *testing.T) {
+			result := tt.event.LangKey()
+			assert.Equal(t, tt.langKey, result)
+		})
+	}
+}
+
+func TestGetWorkflowEventCapabilities(t *testing.T) {
+	capabilities := GetWorkflowEventCapabilities()
+
+	// Verify all events have capabilities
+	assert.Len(t, capabilities, 9, "Should have capabilities for all 9 workflow events")
+
+	// Test item_opened event
+	itemOpenedCap := capabilities[WorkflowEventItemOpened]
+	assert.Contains(t, itemOpenedCap.AvailableFilters, WorkflowFilterTypeIssueType)
+	assert.Contains(t, itemOpenedCap.AvailableFilters, WorkflowFilterTypeLabels)
+	assert.Contains(t, itemOpenedCap.AvailableActions, WorkflowActionTypeColumn)
+	assert.Contains(t, itemOpenedCap.AvailableActions, WorkflowActionTypeAddLabels)
+
+	// Test item_column_changed event (should have the most filters)
+	columnChangedCap := capabilities[WorkflowEventItemColumnChanged]
+	assert.Contains(t, columnChangedCap.AvailableFilters, WorkflowFilterTypeIssueType)
+	assert.Contains(t, columnChangedCap.AvailableFilters, WorkflowFilterTypeSourceColumn)
+	assert.Contains(t, columnChangedCap.AvailableFilters, WorkflowFilterTypeTargetColumn)
+	assert.Contains(t, columnChangedCap.AvailableFilters, WorkflowFilterTypeLabels)
+
+	// Test code review events (should not have issue state action)
+	codeReviewCap := capabilities[WorkflowEventCodeReviewApproved]
+	assert.NotContains(t, codeReviewCap.AvailableActions, WorkflowActionTypeIssueState)
+}
+
+func TestCreateWorkflow(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	// Get an existing project from fixtures
+	project := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+
+	// Create a column for the project
+	column := &Column{
+		Title:     "Test Column",
+		ProjectID: project.ID,
+	}
+	err := NewColumn(t.Context(), column)
+	assert.NoError(t, err)
+
+	// Create a workflow
+	workflow := &Workflow{
+		ProjectID:     project.ID,
+		WorkflowEvent: WorkflowEventItemOpened,
+		WorkflowFilters: []WorkflowFilter{
+			{
+				Type:  WorkflowFilterTypeIssueType,
+				Value: "issue",
+			},
+		},
+		WorkflowActions: []WorkflowAction{
+			{
+				Type:  WorkflowActionTypeColumn,
+				Value: strconv.FormatInt(column.ID, 10),
+			},
+		},
+		Enabled: true,
+	}
+
+	err = CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+	assert.NotZero(t, workflow.ID, "Workflow ID should be set after creation")
+
+	// Verify the workflow was created
+	createdWorkflow, err := GetWorkflowByID(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+	assert.Equal(t, project.ID, createdWorkflow.ProjectID)
+	assert.Equal(t, WorkflowEventItemOpened, createdWorkflow.WorkflowEvent)
+	assert.True(t, createdWorkflow.Enabled)
+	assert.Len(t, createdWorkflow.WorkflowFilters, 1)
+	assert.Len(t, createdWorkflow.WorkflowActions, 1)
+	assert.Equal(t, WorkflowFilterTypeIssueType, createdWorkflow.WorkflowFilters[0].Type)
+	assert.Equal(t, "issue", createdWorkflow.WorkflowFilters[0].Value)
+	assert.Equal(t, WorkflowActionTypeColumn, createdWorkflow.WorkflowActions[0].Type)
+}
+
+func TestUpdateWorkflow(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	// Get an existing project from fixtures
+	project := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+
+	// Create a workflow
+	workflow := &Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   WorkflowEventItemOpened,
+		WorkflowFilters: []WorkflowFilter{},
+		WorkflowActions: []WorkflowAction{},
+		Enabled:         true,
+	}
+	err := CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	// Update the workflow
+	workflow.WorkflowFilters = []WorkflowFilter{
+		{
+			Type:  WorkflowFilterTypeIssueType,
+			Value: "pull_request",
+		},
+	}
+
+	err = UpdateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	// Verify the update
+	updatedWorkflow, err := GetWorkflowByID(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+	assert.True(t, updatedWorkflow.Enabled)
+	assert.Len(t, updatedWorkflow.WorkflowFilters, 1)
+	assert.Equal(t, "pull_request", updatedWorkflow.WorkflowFilters[0].Value)
+}
+
+func TestDeleteWorkflow(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	// Get an existing project from fixtures
+	project := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+
+	// Create a workflow
+	workflow := &Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   WorkflowEventItemOpened,
+		WorkflowFilters: []WorkflowFilter{},
+		WorkflowActions: []WorkflowAction{},
+		Enabled:         true,
+	}
+	err := CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	workflowID := workflow.ID
+
+	// Delete the workflow
+	err = DeleteWorkflow(t.Context(), workflowID)
+	assert.NoError(t, err)
+
+	// Verify it was deleted
+	_, err = GetWorkflowByID(t.Context(), workflowID)
+	assert.Error(t, err)
+	assert.True(t, db.IsErrNotExist(err), "Should return ErrNotExist")
+}
+
+func TestEnableDisableWorkflow(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	// Get an existing project from fixtures
+	project := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+
+	// Create a workflow (enabled by default)
+	workflow := &Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   WorkflowEventItemOpened,
+		WorkflowFilters: []WorkflowFilter{},
+		WorkflowActions: []WorkflowAction{},
+		Enabled:         true,
+	}
+	err := CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	// Test Disable
+	err = DisableWorkflow(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+
+	disabledWorkflow, err := GetWorkflowByID(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+	assert.False(t, disabledWorkflow.Enabled)
+
+	// Test Enable
+	err = EnableWorkflow(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+
+	enabledWorkflow, err := GetWorkflowByID(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+	assert.True(t, enabledWorkflow.Enabled)
+}
+
+func TestFindWorkflowsByProjectID(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	// Get an existing project from fixtures
+	project := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+
+	// Create multiple workflows
+	workflow1 := &Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   WorkflowEventItemOpened,
+		WorkflowFilters: []WorkflowFilter{},
+		WorkflowActions: []WorkflowAction{},
+		Enabled:         true,
+	}
+	err := CreateWorkflow(t.Context(), workflow1)
+	assert.NoError(t, err)
+
+	workflow2 := &Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   WorkflowEventItemClosed,
+		WorkflowFilters: []WorkflowFilter{},
+		WorkflowActions: []WorkflowAction{},
+		Enabled:         false,
+	}
+	err = CreateWorkflow(t.Context(), workflow2)
+	assert.NoError(t, err)
+
+	// Find all workflows for the project
+	workflows, err := FindWorkflowsByProjectID(t.Context(), project.ID)
+	assert.NoError(t, err)
+	assert.Len(t, workflows, 2)
+
+	// Verify the workflows
+	assert.Equal(t, WorkflowEventItemOpened, workflows[0].WorkflowEvent)
+	assert.True(t, workflows[0].Enabled)
+	assert.Equal(t, WorkflowEventItemClosed, workflows[1].WorkflowEvent)
+	assert.False(t, workflows[1].Enabled)
+}
+
+func TestWorkflowLoadProject(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	// Get an existing project from fixtures
+	project := unittest.AssertExistsAndLoadBean(t, &Project{ID: 1})
+
+	// Create a workflow
+	workflow := &Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   WorkflowEventItemOpened,
+		WorkflowFilters: []WorkflowFilter{},
+		WorkflowActions: []WorkflowAction{},
+		Enabled:         true,
+	}
+	err := CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	// Get the workflow
+	loadedWorkflow, err := GetWorkflowByID(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+	assert.Nil(t, loadedWorkflow.Project)
+
+	// Load the project
+	err = loadedWorkflow.LoadProject(t.Context())
+	assert.NoError(t, err)
+	assert.NotNil(t, loadedWorkflow.Project)
+	assert.Equal(t, project.ID, loadedWorkflow.Project.ID)
+
+	// Load again should not error
+	err = loadedWorkflow.LoadProject(t.Context())
+	assert.NoError(t, err)
+}

models/user/user.go

@@ -561,8 +561,9 @@ var globalVars = sync.OnceValue(func() *globalVarsStruct {
 		emailRegexp: regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]*@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$"),
 
 		systemUserNewFuncs: map[int64]func() *User{
-			GhostUserID:   NewGhostUser,
-			ActionsUserID: NewActionsUser,
+			GhostUserID:            NewGhostUser,
+			ActionsUserID:          NewActionsUser,
+			ProjectWorkflowsUserID: NewProjectWorkflowsUser,
 		},
 	}
 })

models/user/user_list.go

@@ -36,6 +36,8 @@ func GetPossibleUserFromMap(userID int64, usererMaps map[int64]*User) *User {
 		return NewGhostUser()
 	case ActionsUserID:
 		return NewActionsUser()
+	case ProjectWorkflowsUserID:
+		return NewProjectWorkflowsUser()
 	case 0:
 		return nil
 	default:

models/user/user_system.go

@@ -65,6 +65,37 @@ func (u *User) IsGiteaActions() bool {
 	return u != nil && u.ID == ActionsUserID
 }
 
+const (
+	ProjectWorkflowsUserID    int64 = -3
+	ProjectWorkflowsUserName        = "project-workflows"
+	ProjectWorkflowsUserEmail       = "workflows@gitea.io"
+)
+
+func IsProjectWorkflowsUserName(name string) bool {
+	return strings.EqualFold(name, ProjectWorkflowsUserName)
+}
+
+// NewProjectWorkflowsUser creates and returns a fake user for running the project workflows.
+func NewProjectWorkflowsUser() *User {
+	return &User{
+		ID:                      ProjectWorkflowsUserID,
+		Name:                    ProjectWorkflowsUserName,
+		LowerName:               ProjectWorkflowsUserName,
+		IsActive:                true,
+		FullName:                "Project Workflows",
+		Email:                   ProjectWorkflowsUserEmail,
+		KeepEmailPrivate:        true,
+		LoginName:               ProjectWorkflowsUserName,
+		Type:                    UserTypeBot,
+		AllowCreateOrganization: true,
+		Visibility:              structs.VisibleTypePublic,
+	}
+}
+
+func (u *User) IsProjectWorkflows() bool {
+	return u != nil && u.ID == ProjectWorkflowsUserID
+}
+
 func GetSystemUserByName(name string) *User {
 	if IsGhostUserName(name) {
 		return NewGhostUser()
@@ -72,5 +103,8 @@ func GetSystemUserByName(name string) *User {
 	if IsGiteaActionsUserName(name) {
 		return NewActionsUser()
 	}
+	if IsProjectWorkflowsUserName(name) {
+		return NewProjectWorkflowsUser()
+	}
 	return nil
 }

models/user/user_system_test.go

@@ -25,6 +25,13 @@ func TestSystemUser(t *testing.T) {
 	assert.True(t, u.IsGiteaActions())
 	assert.True(t, IsGiteaActionsUserName("Gitea-actionS"))
 
-	_, err = GetPossibleUserByID(t.Context(), -3)
+	u, err = GetPossibleUserByID(t.Context(), -3)
+	require.NoError(t, err)
+	assert.Equal(t, "project-workflows", u.Name)
+	assert.Equal(t, "project-workflows", u.LowerName)
+	assert.True(t, u.IsProjectWorkflows())
+	assert.True(t, IsProjectWorkflowsUserName("Project-Workflows"))
+
+	_, err = GetPossibleUserByID(t.Context(), -4)
 	require.Error(t, err)
 }

options/locale/locale_en-US.ini

@@ -3930,7 +3930,56 @@ type-1.display_name = Individual Project
 type-2.display_name = Repository Project
 type-3.display_name = Organization Project
 enter_fullscreen = Fullscreen
+workflows = Workflows
 exit_fullscreen = Exit Fullscreen
+workflows.event.item_opened = Item opened
+workflows.event.item_added_to_project = Item added to project
+workflows.event.item_removed_from_project = Item removed from project
+workflows.event.item_reopened = Item reopened
+workflows.event.item_closed = Item closed
+workflows.event.item_column_changed = Item column changed
+workflows.event.code_changes_requested = Code changes requested
+workflows.event.code_review_approved = Code review approved
+workflows.event.pull_request_merged = Pull request merged
+workflows.view_workflow_configuration = View workflow configuration
+workflows.configure_workflow = Configure automated actions for this workflow
+workflows.when = When
+workflows.run_when = This workflow will run when:
+workflows.filters = Filters
+workflows.apply_to = Apply to
+workflows.when_moved_from_column = When moved from column
+workflows.when_moved_to_column = When moved to column
+workflows.only_if_has_labels = Only if has labels
+workflows.default_workflows = Default Workflows
+workflows.actions = Actions
+workflows.move_to_column = Move to column
+workflows.add_labels = Add labels
+workflows.remove_labels = Remove labels
+workflows.any_label = Any label
+workflows.any_column = Any column
+workflows.issue_state = Issue state
+workflows.none = None
+workflows.no_change = No change
+workflows.edit = Edit
+workflows.delete = Delete
+workflows.save = Save
+workflows.clone = Clone
+workflows.cancel = Cancel
+workflows.disable = Disable
+workflows.disabled = Disabled
+workflows.enable = Enable
+workflows.enabled = Enabled
+workflows.issues_and_pull_requests = Issues and Pull Requests
+workflows.issues_only = Issues only
+workflows.pull_requests_only = Pull Requests only
+workflows.select_column = Select column ...
+workflows.close_issue = Close issue
+workflows.reopen_issue = Reopen issue
+workflows.save_workflow_failed = Failed to save workflow
+workflows.update_workflow_failed = Failed to update workflow status
+workflows.delete_workflow_failed = Failed to delete workflow
+workflows.at_least_one_action_required = At least one action must be configured
+workflows.error.at_least_one_action = At least one action must be configured
 
 [git.filemode]
 changed_filemode = %[1]s → %[2]s

routers/web/projects/workflows.go

@@ -0,0 +1,624 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package projects
+
+import (
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"code.gitea.io/gitea/models/db"
+	issues_model "code.gitea.io/gitea/models/issues"
+	project_model "code.gitea.io/gitea/models/project"
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/templates"
+	"code.gitea.io/gitea/services/context"
+	project_service "code.gitea.io/gitea/services/projects"
+)
+
+var (
+	tmplRepoWorkflows = templates.TplName("repo/projects/workflows")
+	tmplOrgWorkflows  = templates.TplName("org/projects/workflows")
+)
+
+// convertFormToFilters converts form filters to WorkflowFilter objects
+func convertFormToFilters(formFilters map[string]any) []project_model.WorkflowFilter {
+	filters := make([]project_model.WorkflowFilter, 0)
+
+	for key, value := range formFilters {
+		switch key {
+		case "labels":
+			// Handle labels array
+			if labelInterfaces, ok := value.([]any); ok && len(labelInterfaces) > 0 {
+				for _, labelInterface := range labelInterfaces {
+					if label, ok := labelInterface.(string); ok && label != "" {
+						filters = append(filters, project_model.WorkflowFilter{
+							Type:  project_model.WorkflowFilterTypeLabels,
+							Value: label,
+						})
+					}
+				}
+			}
+		default:
+			// Handle string values (issue_type, column)
+			if strValue, ok := value.(string); ok && strValue != "" {
+				filters = append(filters, project_model.WorkflowFilter{
+					Type:  project_model.WorkflowFilterType(key),
+					Value: strValue,
+				})
+			}
+		}
+	}
+
+	return filters
+}
+
+// convertFormToActions converts form actions to WorkflowAction objects
+func convertFormToActions(formActions map[string]any) []project_model.WorkflowAction {
+	actions := make([]project_model.WorkflowAction, 0)
+
+	for key, value := range formActions {
+		switch key {
+		case "column":
+			if floatValue, ok := value.(string); ok {
+				floatValueInt, _ := strconv.ParseInt(floatValue, 10, 64)
+				if floatValueInt > 0 {
+					actions = append(actions, project_model.WorkflowAction{
+						Type:  project_model.WorkflowActionTypeColumn,
+						Value: strconv.FormatInt(floatValueInt, 10),
+					})
+				}
+			}
+		case "add_labels":
+			// Handle both []string and []any from JSON unmarshaling
+			if labels, ok := value.([]string); ok && len(labels) > 0 {
+				for _, label := range labels {
+					if label != "" {
+						actions = append(actions, project_model.WorkflowAction{
+							Type:  project_model.WorkflowActionTypeAddLabels,
+							Value: label,
+						})
+					}
+				}
+			} else if labelInterfaces, ok := value.([]any); ok && len(labelInterfaces) > 0 {
+				for _, labelInterface := range labelInterfaces {
+					if label, ok := labelInterface.(string); ok && label != "" {
+						actions = append(actions, project_model.WorkflowAction{
+							Type:  project_model.WorkflowActionTypeAddLabels,
+							Value: label,
+						})
+					}
+				}
+			}
+		case "remove_labels":
+			// Handle both []string and []any from JSON unmarshaling
+			if labels, ok := value.([]string); ok && len(labels) > 0 {
+				for _, label := range labels {
+					if label != "" {
+						actions = append(actions, project_model.WorkflowAction{
+							Type:  project_model.WorkflowActionTypeRemoveLabels,
+							Value: label,
+						})
+					}
+				}
+			} else if labelInterfaces, ok := value.([]any); ok && len(labelInterfaces) > 0 {
+				for _, labelInterface := range labelInterfaces {
+					if label, ok := labelInterface.(string); ok && label != "" {
+						actions = append(actions, project_model.WorkflowAction{
+							Type:  project_model.WorkflowActionTypeRemoveLabels,
+							Value: label,
+						})
+					}
+				}
+			}
+		case "issue_state":
+			if strValue, ok := value.(string); ok {
+				v := strings.ToLower(strValue)
+				if v == "close" || v == "reopen" {
+					actions = append(actions, project_model.WorkflowAction{
+						Type:  project_model.WorkflowActionTypeIssueState,
+						Value: v,
+					})
+				}
+			}
+		}
+	}
+
+	return actions
+}
+
+func WorkflowsEvents(ctx *context.Context) {
+	projectID := ctx.PathParamInt64("id")
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+	if p.Type == project_model.TypeRepository && p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+	if (p.Type == project_model.TypeOrganization || p.Type == project_model.TypeIndividual) && p.OwnerID != ctx.ContextUser.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, projectID)
+	if err != nil {
+		ctx.ServerError("FindWorkflowsByProjectID", err)
+		return
+	}
+
+	type WorkflowConfig struct {
+		ID            int64                                   `json:"id"`
+		EventID       string                                  `json:"event_id"`
+		DisplayName   string                                  `json:"display_name"`
+		WorkflowEvent string                                  `json:"workflow_event"` // The workflow event
+		Capabilities  project_model.WorkflowEventCapabilities `json:"capabilities"`
+		Filters       []project_model.WorkflowFilter          `json:"filters"`
+		Actions       []project_model.WorkflowAction          `json:"actions"`
+		Summary       string                                  `json:"summary"` // Human readable filter description
+		Enabled       bool                                    `json:"enabled"`
+		IsConfigured  bool                                    `json:"isConfigured"` // Whether this workflow is configured/saved
+	}
+
+	outputWorkflows := make([]*WorkflowConfig, 0)
+	events := project_model.GetWorkflowEvents()
+	capabilities := project_model.GetWorkflowEventCapabilities()
+
+	// Create a map for quick lookup of existing workflows
+	workflowMap := make(map[project_model.WorkflowEvent][]*project_model.Workflow)
+	for _, wf := range workflows {
+		workflowMap[wf.WorkflowEvent] = append(workflowMap[wf.WorkflowEvent], wf)
+	}
+
+	for _, event := range events {
+		existingWorkflows := workflowMap[event]
+		if len(existingWorkflows) > 0 {
+			// Add all existing workflows for this event
+			for _, wf := range existingWorkflows {
+				workflowSummary := project_service.GetWorkflowSummary(ctx, wf)
+				outputWorkflows = append(outputWorkflows, &WorkflowConfig{
+					ID:            wf.ID,
+					EventID:       strconv.FormatInt(wf.ID, 10),
+					DisplayName:   string(ctx.Tr(wf.WorkflowEvent.LangKey())),
+					WorkflowEvent: string(wf.WorkflowEvent),
+					Capabilities:  capabilities[event],
+					Filters:       wf.WorkflowFilters,
+					Actions:       wf.WorkflowActions,
+					Summary:       workflowSummary,
+					Enabled:       wf.Enabled,
+					IsConfigured:  true,
+				})
+			}
+		} else {
+			// Add placeholder for creating new workflow
+			outputWorkflows = append(outputWorkflows, &WorkflowConfig{
+				ID:            0,
+				EventID:       event.EventID(),
+				DisplayName:   string(ctx.Tr(event.LangKey())),
+				WorkflowEvent: string(event),
+				Capabilities:  capabilities[event],
+				Summary:       "",
+				Enabled:       true, // Default to enabled for new workflows
+				IsConfigured:  false,
+			})
+		}
+	}
+
+	ctx.JSON(http.StatusOK, outputWorkflows)
+}
+
+func WorkflowsColumns(ctx *context.Context) {
+	projectID := ctx.PathParamInt64("id")
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+	if p.Type == project_model.TypeRepository && p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+	if (p.Type == project_model.TypeOrganization || p.Type == project_model.TypeIndividual) && p.OwnerID != ctx.ContextUser.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	columns, err := p.GetColumns(ctx)
+	if err != nil {
+		ctx.ServerError("GetProjectColumns", err)
+		return
+	}
+
+	type Column struct {
+		ID    int64  `json:"id"`
+		Title string `json:"title"`
+		Color string `json:"color"`
+	}
+	outputColumns := make([]*Column, 0, len(columns))
+	for _, col := range columns {
+		outputColumns = append(outputColumns, &Column{
+			ID:    col.ID,
+			Title: col.Title,
+			Color: col.Color,
+		})
+	}
+
+	ctx.JSON(http.StatusOK, outputColumns)
+}
+
+func WorkflowsLabels(ctx *context.Context) {
+	projectID := ctx.PathParamInt64("id")
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+
+	// Only repository projects have access to labels
+	if p.Type != project_model.TypeRepository {
+		ctx.JSON(http.StatusOK, []any{})
+		return
+	}
+
+	if p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	// Get repository labels
+	labels, err := issues_model.GetLabelsByRepoID(ctx, p.RepoID, "", db.ListOptions{})
+	if err != nil {
+		ctx.ServerError("GetLabelsByRepoID", err)
+		return
+	}
+
+	type Label struct {
+		ID             int64  `json:"id"`
+		Name           string `json:"name"`
+		Color          string `json:"color"`
+		Description    string `json:"description"`
+		Exclusive      bool   `json:"exclusive"`
+		ExclusiveOrder int    `json:"exclusiveOrder"`
+	}
+	outputLabels := make([]*Label, 0, len(labels))
+	for _, label := range labels {
+		outputLabels = append(outputLabels, &Label{
+			ID:             label.ID,
+			Name:           label.Name,
+			Color:          label.Color,
+			Description:    label.Description,
+			Exclusive:      label.Exclusive,
+			ExclusiveOrder: label.ExclusiveOrder,
+		})
+	}
+
+	ctx.JSON(http.StatusOK, outputLabels)
+}
+
+func Workflows(ctx *context.Context) {
+	workflowIDStr := ctx.PathParam("workflow_id")
+	if workflowIDStr == "events" {
+		WorkflowsEvents(ctx)
+		return
+	}
+	if workflowIDStr == "columns" {
+		WorkflowsColumns(ctx)
+		return
+	}
+	if workflowIDStr == "labels" {
+		WorkflowsLabels(ctx)
+		return
+	}
+
+	ctx.Data["WorkflowEvents"] = project_model.GetWorkflowEvents()
+
+	projectID := ctx.PathParamInt64("id")
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+	if p.Type == project_model.TypeRepository && p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+	if (p.Type == project_model.TypeOrganization || p.Type == project_model.TypeIndividual) && p.OwnerID != ctx.ContextUser.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	ctx.Data["Title"] = ctx.Tr("projects.workflows")
+	ctx.Data["IsProjectsPage"] = true
+	ctx.Data["Project"] = p
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, projectID)
+	if err != nil {
+		ctx.ServerError("FindWorkflowsByProjectID", err)
+		return
+	}
+	for _, wf := range workflows {
+		wf.Project = p
+	}
+	ctx.Data["Workflows"] = workflows
+
+	ctx.Data["workflowIDStr"] = workflowIDStr
+	var curWorkflow *project_model.Workflow
+	if workflowIDStr == "" { // get first value workflow or the first workflow
+		for _, wf := range workflows {
+			if wf.ID > 0 {
+				curWorkflow = wf
+				break
+			}
+		}
+	} else {
+		workflowID, _ := strconv.ParseInt(workflowIDStr, 10, 64)
+		if workflowID > 0 {
+			for _, wf := range workflows {
+				if wf.ID == workflowID {
+					curWorkflow = wf
+					break
+				}
+			}
+		}
+	}
+	ctx.Data["CurWorkflow"] = curWorkflow
+	ctx.Data["ProjectLink"] = project_model.ProjectLinkForRepo(ctx.Repo.Repository, projectID)
+
+	if p.Type == project_model.TypeRepository {
+		ctx.HTML(200, tmplRepoWorkflows)
+	} else {
+		ctx.HTML(200, tmplOrgWorkflows)
+	}
+}
+
+type WorkflowsPostForm struct {
+	EventID string         `json:"event_id"`
+	Filters map[string]any `json:"filters"`
+	Actions map[string]any `json:"actions"`
+}
+
+// WorkflowsPost handles creating or updating a workflow
+func WorkflowsPost(ctx *context.Context) {
+	projectID := ctx.PathParamInt64("id")
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+	if p.Type == project_model.TypeRepository && p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+	if (p.Type == project_model.TypeOrganization || p.Type == project_model.TypeIndividual) && p.OwnerID != ctx.ContextUser.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	// Handle both form data and JSON data
+	// Handle JSON data
+	form := &WorkflowsPostForm{}
+	content, err := io.ReadAll(ctx.Req.Body)
+	if err != nil {
+		ctx.ServerError("ReadRequestBody", err)
+		return
+	}
+	defer ctx.Req.Body.Close()
+	log.Trace("get " + string(content))
+	if err := json.Unmarshal(content, &form); err != nil {
+		ctx.ServerError("DecodeWorkflowsPostForm", err)
+		return
+	}
+	if form.EventID == "" {
+		ctx.JSON(http.StatusBadRequest, map[string]any{"error": "InvalidEventID", "message": "EventID is required"})
+		return
+	}
+
+	// Convert form data to filters and actions
+	filters := convertFormToFilters(form.Filters)
+	actions := convertFormToActions(form.Actions)
+
+	// Validate: at least one action must be configured
+	if len(actions) == 0 {
+		ctx.JSON(http.StatusBadRequest, map[string]any{
+			"error":   "NoActions",
+			"message": ctx.Tr("projects.workflows.error.at_least_one_action"),
+		})
+		return
+	}
+
+	eventID, _ := strconv.ParseInt(form.EventID, 10, 64)
+	if eventID == 0 {
+		// check if workflow event is valid
+		if !project_model.IsValidWorkflowEvent(form.EventID) {
+			ctx.JSON(http.StatusBadRequest, map[string]any{"error": "EventID is invalid"})
+			return
+		}
+
+		// Create a new workflow for the given event
+		wf := &project_model.Workflow{
+			ProjectID:       projectID,
+			WorkflowEvent:   project_model.WorkflowEvent(form.EventID),
+			WorkflowFilters: filters,
+			WorkflowActions: actions,
+			Enabled:         true, // New workflows are enabled by default
+		}
+		if err := project_model.CreateWorkflow(ctx, wf); err != nil {
+			ctx.ServerError("CreateWorkflow", err)
+			return
+		}
+
+		// Return the newly created workflow with filter summary
+		workflowSummary := project_service.GetWorkflowSummary(ctx, wf)
+		ctx.JSON(http.StatusOK, map[string]any{
+			"success": true,
+			"workflow": map[string]any{
+				"id":           wf.ID,
+				"event_id":     strconv.FormatInt(wf.ID, 10),
+				"display_name": string(ctx.Tr(wf.WorkflowEvent.LangKey())),
+				"filters":      wf.WorkflowFilters,
+				"actions":      wf.WorkflowActions,
+				"summary":      workflowSummary,
+				"enabled":      wf.Enabled,
+			},
+		})
+	} else {
+		// Update an existing workflow
+		wf, err := project_model.GetWorkflowByID(ctx, eventID)
+		if err != nil {
+			ctx.ServerError("GetWorkflowByID", err)
+			return
+		}
+		if wf.ProjectID != projectID {
+			ctx.NotFound(nil)
+			return
+		}
+
+		wf.WorkflowFilters = filters
+		wf.WorkflowActions = actions
+		if err := project_model.UpdateWorkflow(ctx, wf); err != nil {
+			ctx.ServerError("UpdateWorkflow", err)
+			return
+		}
+
+		// Return the updated workflow with filter summary
+		workflowSummary := project_service.GetWorkflowSummary(ctx, wf)
+		ctx.JSON(http.StatusOK, map[string]any{
+			"success": true,
+			"workflow": map[string]any{
+				"id":           wf.ID,
+				"event_id":     strconv.FormatInt(wf.ID, 10),
+				"display_name": string(ctx.Tr(wf.WorkflowEvent.LangKey())),
+				"filters":      wf.WorkflowFilters,
+				"actions":      wf.WorkflowActions,
+				"summary":      workflowSummary,
+				"enabled":      wf.Enabled,
+			},
+		})
+	}
+}
+
+func WorkflowsStatus(ctx *context.Context) {
+	projectID := ctx.PathParamInt64("id")
+	workflowID, _ := strconv.ParseInt(ctx.PathParam("workflow_id"), 10, 64)
+
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+	if p.Type == project_model.TypeRepository && p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+	if (p.Type == project_model.TypeOrganization || p.Type == project_model.TypeIndividual) && p.OwnerID != ctx.ContextUser.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	wf, err := project_model.GetWorkflowByID(ctx, workflowID)
+	if err != nil {
+		ctx.ServerError("GetWorkflowByID", err)
+		return
+	}
+	if wf.ProjectID != projectID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	// Get enabled status from form
+	_ = ctx.Req.ParseForm()
+	enabledStr := ctx.Req.FormValue("enabled")
+	enabled, _ := strconv.ParseBool(enabledStr)
+
+	if enabled {
+		if err := project_model.EnableWorkflow(ctx, workflowID); err != nil {
+			ctx.ServerError("EnableWorkflow", err)
+			return
+		}
+	} else {
+		if err := project_model.DisableWorkflow(ctx, workflowID); err != nil {
+			ctx.ServerError("DisableWorkflow", err)
+			return
+		}
+	}
+
+	ctx.JSON(http.StatusOK, map[string]any{
+		"success": true,
+		"enabled": wf.Enabled,
+	})
+}
+
+func WorkflowsDelete(ctx *context.Context) {
+	projectID := ctx.PathParamInt64("id")
+	workflowID, _ := strconv.ParseInt(ctx.PathParam("workflow_id"), 10, 64)
+
+	p, err := project_model.GetProjectByID(ctx, projectID)
+	if err != nil {
+		if project_model.IsErrProjectNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetProjectByID", err)
+		}
+		return
+	}
+	if p.Type == project_model.TypeRepository && p.RepoID != ctx.Repo.Repository.ID {
+		ctx.NotFound(nil)
+		return
+	}
+	if (p.Type == project_model.TypeOrganization || p.Type == project_model.TypeIndividual) && p.OwnerID != ctx.ContextUser.ID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	wf, err := project_model.GetWorkflowByID(ctx, workflowID)
+	if err != nil {
+		if db.IsErrNotExist(err) {
+			ctx.NotFound(nil)
+		} else {
+			ctx.ServerError("GetWorkflowByID", err)
+		}
+		return
+	}
+	if wf.ProjectID != projectID {
+		ctx.NotFound(nil)
+		return
+	}
+
+	if err := project_model.DeleteWorkflow(ctx, workflowID); err != nil {
+		ctx.ServerError("DeleteWorkflow", err)
+		return
+	}
+
+	ctx.JSON(http.StatusOK, map[string]any{
+		"success": true,
+	})
+}

routers/web/repo/projects.go

@@ -27,6 +27,7 @@ import (
 	shared_user "code.gitea.io/gitea/routers/web/shared/user"
 	"code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/forms"
+	issues_servie "code.gitea.io/gitea/services/issue"
 	project_service "code.gitea.io/gitea/services/projects"
 )
 
@@ -446,7 +447,7 @@ func UpdateIssueProject(ctx *context.Context) {
 		if issue.Project != nil && issue.Project.ID == projectID {
 			continue
 		}
-		if err := issues_model.IssueAssignOrRemoveProject(ctx, issue, ctx.Doer, projectID, 0); err != nil {
+		if err := issues_servie.AssignOrRemoveProject(ctx, issue, ctx.Doer, projectID, 0); err != nil {
 			if errors.Is(err, util.ErrPermissionDenied) {
 				continue
 			}
@@ -684,6 +685,7 @@ func MoveIssues(ctx *context.Context) {
 	form := &movedIssuesForm{}
 	if err = json.NewDecoder(ctx.Req.Body).Decode(&form); err != nil {
 		ctx.ServerError("DecodeMovedIssuesForm", err)
+		return
 	}
 
 	issueIDs := make([]int64, 0, len(form.Issues))

routers/web/repo/pull.go

@@ -1430,6 +1430,7 @@ func CompareAndPullRequestPost(ctx *context.Context) {
 		return
 	}
 
+	// FIXME: this should be moved in the function NewPullRequest
 	if projectID > 0 && ctx.Repo.CanWrite(unit.TypeProjects) {
 		if err := issues_model.IssueAssignOrRemoveProject(ctx, pullIssue, ctx.Doer, projectID, 0); err != nil {
 			if !errors.Is(err, util.ErrPermissionDenied) {

routers/web/web.go

@@ -34,6 +34,7 @@ import (
 	"code.gitea.io/gitea/routers/web/misc"
 	"code.gitea.io/gitea/routers/web/org"
 	org_setting "code.gitea.io/gitea/routers/web/org/setting"
+	"code.gitea.io/gitea/routers/web/projects"
 	"code.gitea.io/gitea/routers/web/repo"
 	"code.gitea.io/gitea/routers/web/repo/actions"
 	repo_setting "code.gitea.io/gitea/routers/web/repo/setting"
@@ -1037,7 +1038,14 @@ func registerWebRoutes(m *web.Router) {
 				m.Get("", org.Projects)
 				m.Get("/{id}", org.ViewProject)
 			}, reqUnitAccess(unit.TypeProjects, perm.AccessModeRead, true))
-			m.Group("", func() { //nolint:dupl // duplicates lines 1421-1441
+			m.Group("/{id}/workflows", func() {
+				m.Get("", projects.Workflows)
+				m.Get("/{workflow_id}", projects.Workflows)
+				m.Post("/{workflow_id}", projects.WorkflowsPost)
+				m.Post("/{workflow_id}/status", projects.WorkflowsStatus)
+				m.Post("/{workflow_id}/delete", projects.WorkflowsDelete)
+			}, reqUnitAccess(unit.TypeProjects, perm.AccessModeWrite, true))
+			m.Group("", func() {
 				m.Get("/new", org.RenderNewProject)
 				m.Post("/new", web.Bind(forms.CreateProjectForm{}), org.NewProjectPost)
 				m.Group("/{id}", func() {
@@ -1435,7 +1443,7 @@ func registerWebRoutes(m *web.Router) {
 	m.Group("/{username}/{reponame}/projects", func() {
 		m.Get("", repo.Projects)
 		m.Get("/{id}", repo.ViewProject)
-		m.Group("", func() { //nolint:dupl // duplicates lines 1034-1054
+		m.Group("", func() {
 			m.Get("/new", repo.RenderNewProject)
 			m.Post("/new", web.Bind(forms.CreateProjectForm{}), repo.NewProjectPost)
 			m.Group("/{id}", func() {
@@ -1454,6 +1462,14 @@ func registerWebRoutes(m *web.Router) {
 					m.Post("/default", repo.SetDefaultProjectColumn)
 					m.Post("/move", repo.MoveIssues)
 				})
+
+				m.Group("/workflows", func() {
+					m.Get("", projects.Workflows)
+					m.Get("/{workflow_id}", projects.Workflows)
+					m.Post("/{workflow_id}", projects.WorkflowsPost)
+					m.Post("/{workflow_id}/status", projects.WorkflowsStatus)
+					m.Post("/{workflow_id}/delete", projects.WorkflowsDelete)
+				})
 			})
 		}, reqRepoProjectsWriter, context.RepoMustNotBeArchived())
 	}, optSignIn, context.RepoAssignment, reqRepoProjectsReader, repo.MustEnableRepoProjects)

services/issue/label.go

@@ -8,7 +8,6 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	issues_model "code.gitea.io/gitea/models/issues"
-	access_model "code.gitea.io/gitea/models/perm/access"
 	user_model "code.gitea.io/gitea/models/user"
 	notify_service "code.gitea.io/gitea/services/notify"
 )
@@ -47,21 +46,6 @@ func AddLabels(ctx context.Context, issue *issues_model.Issue, doer *user_model.
 // RemoveLabel removes a label from issue by given ID.
 func RemoveLabel(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, label *issues_model.Label) error {
 	if err := db.WithTx(ctx, func(ctx context.Context) error {
-		if err := issue.LoadRepo(ctx); err != nil {
-			return err
-		}
-
-		perm, err := access_model.GetUserRepoPermission(ctx, issue.Repo, doer)
-		if err != nil {
-			return err
-		}
-		if !perm.CanWriteIssuesOrPulls(issue.IsPull) {
-			if label.OrgID > 0 {
-				return issues_model.ErrOrgLabelNotExist{}
-			}
-			return issues_model.ErrRepoLabelNotExist{}
-		}
-
 		return issues_model.DeleteIssueLabel(ctx, issue, label, doer)
 	}); err != nil {
 		return err
@@ -85,3 +69,29 @@ func ReplaceLabels(ctx context.Context, issue *issues_model.Issue, doer *user_mo
 	notify_service.IssueChangeLabels(ctx, doer, issue, labels, old)
 	return nil
 }
+
+func AddRemoveLabels(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, toAddLabels, toRemoveLabels []*issues_model.Label) error {
+	if len(toAddLabels) == 0 && len(toRemoveLabels) == 0 {
+		return nil
+	}
+
+	if err := db.WithTx(ctx, func(ctx context.Context) error {
+		if len(toAddLabels) > 0 {
+			if err := issues_model.NewIssueLabels(ctx, issue, toAddLabels, doer); err != nil {
+				return err
+			}
+		}
+
+		for _, label := range toRemoveLabels {
+			if err := issues_model.DeleteIssueLabel(ctx, issue, label, doer); err != nil {
+				return err
+			}
+		}
+		return nil
+	}); err != nil {
+		return err
+	}
+
+	notify_service.IssueChangeLabels(ctx, doer, issue, toAddLabels, toRemoveLabels)
+	return nil
+}

services/issue/label_test.go

@@ -59,3 +59,38 @@ func TestIssue_AddLabel(t *testing.T) {
 		unittest.AssertExistsAndLoadBean(t, &issues_model.IssueLabel{IssueID: test.issueID, LabelID: test.labelID})
 	}
 }
+
+func TestIssue_AddRemoveLabels(t *testing.T) {
+	tests := []struct {
+		issueID     int64
+		toAddIDs    []int64
+		toRemoveIDs []int64
+		doerID      int64
+	}{
+		{1, []int64{2}, []int64{1}, 2},   // now there are both 1 and 2
+		{1, []int64{}, []int64{1, 2}, 2}, // no label left
+		{1, []int64{1, 2}, []int64{}, 2}, // add them back
+		{1, []int64{}, []int64{}, 2},     // no-op
+	}
+
+	for _, test := range tests {
+		assert.NoError(t, unittest.PrepareTestDatabase())
+		issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: test.issueID})
+		toAddLabels := make([]*issues_model.Label, len(test.toAddIDs))
+		for i, labelID := range test.toAddIDs {
+			toAddLabels[i] = unittest.AssertExistsAndLoadBean(t, &issues_model.Label{ID: labelID})
+		}
+		toRemoveLabels := make([]*issues_model.Label, len(test.toRemoveIDs))
+		for i, labelID := range test.toRemoveIDs {
+			toRemoveLabels[i] = unittest.AssertExistsAndLoadBean(t, &issues_model.Label{ID: labelID})
+		}
+		doer := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: test.doerID})
+		assert.NoError(t, AddRemoveLabels(t.Context(), issue, doer, toAddLabels, toRemoveLabels))
+		for _, labelID := range test.toAddIDs {
+			unittest.AssertExistsAndLoadBean(t, &issues_model.IssueLabel{IssueID: test.issueID, LabelID: labelID})
+		}
+		for _, labelID := range test.toRemoveIDs {
+			unittest.AssertNotExistsBean(t, &issues_model.IssueLabel{IssueID: test.issueID, LabelID: labelID})
+		}
+	}
+}

services/issue/project.go

@@ -0,0 +1,31 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package issue
+
+import (
+	"context"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	project_model "code.gitea.io/gitea/models/project"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/services/notify"
+)
+
+func AssignOrRemoveProject(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, projectID int64, position int) error {
+	if err := issues_model.IssueAssignOrRemoveProject(ctx, issue, doer, projectID, 0); err != nil {
+		return err
+	}
+
+	var newProject *project_model.Project
+	var err error
+	if projectID > 0 {
+		newProject, err = project_model.GetProjectByID(ctx, projectID)
+		if err != nil {
+			return err
+		}
+	}
+
+	notify.IssueChangeProjects(ctx, doer, issue, newProject)
+	return nil
+}

services/notify/notifier.go

@@ -10,6 +10,7 @@ import (
 	git_model "code.gitea.io/gitea/models/git"
 	issues_model "code.gitea.io/gitea/models/issues"
 	packages_model "code.gitea.io/gitea/models/packages"
+	project_model "code.gitea.io/gitea/models/project"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/git"
@@ -41,6 +42,8 @@ type Notifier interface {
 	IssueChangeRef(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldRef string)
 	IssueChangeLabels(ctx context.Context, doer *user_model.User, issue *issues_model.Issue,
 		addedLabels, removedLabels []*issues_model.Label)
+	IssueChangeProjects(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, newProject *project_model.Project)
+	IssueChangeProjectColumn(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldColumnID, newColumnID int64)
 
 	NewPullRequest(ctx context.Context, pr *issues_model.PullRequest, mentions []*user_model.User)
 	MergePullRequest(ctx context.Context, doer *user_model.User, pr *issues_model.PullRequest)

services/notify/notify.go

@@ -10,6 +10,7 @@ import (
 	git_model "code.gitea.io/gitea/models/git"
 	issues_model "code.gitea.io/gitea/models/issues"
 	packages_model "code.gitea.io/gitea/models/packages"
+	project_model "code.gitea.io/gitea/models/project"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/git"
@@ -274,6 +275,19 @@ func IssueChangeLabels(ctx context.Context, doer *user_model.User, issue *issues
 	}
 }
 
+// IssueChangeProjects notifies change projects to notifiers
+func IssueChangeProjects(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, newProject *project_model.Project) {
+	for _, notifier := range notifiers {
+		notifier.IssueChangeProjects(ctx, doer, issue, newProject)
+	}
+}
+
+func IssueChangeProjectColumn(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldColumnID, newColumnID int64) {
+	for _, notifier := range notifiers {
+		notifier.IssueChangeProjectColumn(ctx, doer, issue, oldColumnID, newColumnID)
+	}
+}
+
 // CreateRepository notifies create repository to notifiers
 func CreateRepository(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository) {
 	for _, notifier := range notifiers {

services/notify/null.go

@@ -10,6 +10,7 @@ import (
 	git_model "code.gitea.io/gitea/models/git"
 	issues_model "code.gitea.io/gitea/models/issues"
 	packages_model "code.gitea.io/gitea/models/packages"
+	project_model "code.gitea.io/gitea/models/project"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/git"
@@ -143,6 +144,12 @@ func (*NullNotifier) IssueChangeLabels(ctx context.Context, doer *user_model.Use
 	addedLabels, removedLabels []*issues_model.Label) {
 }
 
+func (*NullNotifier) IssueChangeProjects(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, newProject *project_model.Project) {
+}
+
+func (*NullNotifier) IssueChangeProjectColumn(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldColumnID, newColumnID int64) {
+}
+
 // CreateRepository places a place holder function
 func (*NullNotifier) CreateRepository(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository) {
 }

services/projects/issue.go

@@ -1,7 +1,7 @@
 // Copyright 2024 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
-package project
+package projects
 
 import (
 	"context"
@@ -12,30 +12,33 @@ import (
 	project_model "code.gitea.io/gitea/models/project"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/optional"
+	"code.gitea.io/gitea/services/notify"
 )
 
 // MoveIssuesOnProjectColumn moves or keeps issues in a column and sorts them inside that column
 func MoveIssuesOnProjectColumn(ctx context.Context, doer *user_model.User, column *project_model.Column, sortedIssueIDs map[int64]int64) error {
-	return db.WithTx(ctx, func(ctx context.Context) error {
-		issueIDs := make([]int64, 0, len(sortedIssueIDs))
-		for _, issueID := range sortedIssueIDs {
-			issueIDs = append(issueIDs, issueID)
-		}
-		count, err := db.GetEngine(ctx).
-			Where("project_id=?", column.ProjectID).
-			In("issue_id", issueIDs).
-			Count(new(project_model.ProjectIssue))
-		if err != nil {
-			return err
-		}
-		if int(count) != len(sortedIssueIDs) {
-			return errors.New("all issues have to be added to a project first")
-		}
+	issueIDs := make([]int64, 0, len(sortedIssueIDs))
+	for _, issueID := range sortedIssueIDs {
+		issueIDs = append(issueIDs, issueID)
+	}
+	count, err := db.GetEngine(ctx).
+		Where("project_id=?", column.ProjectID).
+		In("issue_id", issueIDs).
+		Count(new(project_model.ProjectIssue))
+	if err != nil {
+		return err
+	}
+	if int(count) != len(sortedIssueIDs) {
+		return errors.New("all issues have to be added to a project first")
+	}
 
-		issues, err := issues_model.GetIssuesByIDs(ctx, issueIDs)
-		if err != nil {
-			return err
-		}
+	issues, err := issues_model.GetIssuesByIDs(ctx, issueIDs)
+	if err != nil {
+		return err
+	}
+	oldColumnIDsMap := make(map[int64]int64, len(issues))
+
+	if err := db.WithTx(ctx, func(ctx context.Context) error {
 		if _, err := issues.LoadRepositories(ctx); err != nil {
 			return err
 		}
@@ -60,6 +63,7 @@ func MoveIssuesOnProjectColumn(ctx context.Context, doer *user_model.User, colum
 			if err != nil {
 				return err
 			}
+			oldColumnIDsMap[issueID] = projectColumnID
 
 			if projectColumnID != column.ID {
 				// add timeline to issue
@@ -83,7 +87,15 @@ func MoveIssuesOnProjectColumn(ctx context.Context, doer *user_model.User, colum
 			}
 		}
 		return nil
-	})
+	}); err != nil {
+		return err
+	}
+
+	for _, issue := range issues {
+		notify.IssueChangeProjectColumn(ctx, doer, issue, oldColumnIDsMap[issue.ID], column.ID)
+	}
+
+	return nil
 }
 
 // LoadIssuesFromProject load issues assigned to each project column inside the given project
@@ -205,3 +217,43 @@ func LoadIssueNumbersForProject(ctx context.Context, project *project_model.Proj
 
 	return nil
 }
+
+func MoveIssueToAnotherColumn(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, newColumn *project_model.Column) error {
+	oldColumnID, err := issue.ProjectColumnID(ctx)
+	if err != nil {
+		return err
+	}
+	if oldColumnID == newColumn.ID {
+		return nil
+	}
+
+	if err := db.WithTx(ctx, func(ctx context.Context) error {
+		if _, err := db.GetEngine(ctx).Exec("UPDATE `project_issue` SET project_board_id=? WHERE issue_id=?", newColumn.ID, issue.ID); err != nil {
+			return err
+		}
+
+		if err := newColumn.LoadProject(ctx); err != nil {
+			return err
+		}
+
+		// add timeline to issue
+		if _, err := issues_model.CreateComment(ctx, &issues_model.CreateCommentOptions{
+			Type:               issues_model.CommentTypeProjectColumn,
+			Doer:               doer,
+			Repo:               issue.Repo,
+			Issue:              issue,
+			ProjectID:          newColumn.ProjectID,
+			ProjectTitle:       newColumn.Project.Title,
+			ProjectColumnID:    newColumn.ID,
+			ProjectColumnTitle: newColumn.Title,
+		}); err != nil {
+			return err
+		}
+		return nil
+	}); err != nil {
+		return err
+	}
+
+	notify.IssueChangeProjectColumn(ctx, doer, issue, oldColumnID, newColumn.ID)
+	return nil
+}

services/projects/issue_test.go

@@ -1,7 +1,7 @@
 // Copyright 2025 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
-package project
+package projects
 
 import (
 	"testing"

services/projects/main_test.go

@@ -1,7 +1,7 @@
 // Copyright 2025 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
-package project
+package projects
 
 import (
 	"testing"

services/projects/workflow.go

@@ -0,0 +1,94 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package projects
+
+import (
+	"context"
+	"strconv"
+	"strings"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	project_model "code.gitea.io/gitea/models/project"
+	"code.gitea.io/gitea/modules/log"
+)
+
+// GetWorkflowSummary returns a human-readable summary of the workflow
+func GetWorkflowSummary(ctx context.Context, wf *project_model.Workflow) string {
+	filters := wf.WorkflowFilters
+	if len(filters) == 0 {
+		return ""
+	}
+
+	var summary strings.Builder
+	labelIDs := make([]int64, 0)
+	for _, filter := range filters {
+		switch filter.Type {
+		case project_model.WorkflowFilterTypeIssueType:
+			switch filter.Value {
+			case "issue":
+				if summary.Len() > 0 {
+					summary.WriteString(" ")
+				}
+				summary.WriteString("(Issues only)")
+			case "pull_request":
+				if summary.Len() > 0 {
+					summary.WriteString(" ")
+				}
+				summary.WriteString("(Pull requests only)")
+			}
+		case project_model.WorkflowFilterTypeSourceColumn:
+			columnID, _ := strconv.ParseInt(filter.Value, 10, 64)
+			if columnID <= 0 {
+				continue
+			}
+			col, err := project_model.GetColumn(ctx, columnID)
+			if err != nil {
+				log.Error("GetColumn: %v", err)
+				continue
+			}
+			if summary.Len() > 0 {
+				summary.WriteString(" ")
+			}
+			summary.WriteString("(Source: " + col.Title + ")")
+		case project_model.WorkflowFilterTypeTargetColumn:
+			columnID, _ := strconv.ParseInt(filter.Value, 10, 64)
+			if columnID <= 0 {
+				continue
+			}
+			col, err := project_model.GetColumn(ctx, columnID)
+			if err != nil {
+				log.Error("GetColumn: %v", err)
+				continue
+			}
+			if summary.Len() > 0 {
+				summary.WriteString(" ")
+			}
+			summary.WriteString("(Target: " + col.Title + ")")
+		case project_model.WorkflowFilterTypeLabels:
+			labelID, _ := strconv.ParseInt(filter.Value, 10, 64)
+			if labelID > 0 {
+				labelIDs = append(labelIDs, labelID)
+			}
+		}
+	}
+	if len(labelIDs) > 0 {
+		labels, err := issues_model.GetLabelsByIDs(ctx, labelIDs)
+		if err != nil {
+			log.Error("GetLabelsByIDs: %v", err)
+		} else {
+			if summary.Len() > 0 {
+				summary.WriteString(" ")
+			}
+			summary.WriteString("(Labels: ")
+			for i, label := range labels {
+				summary.WriteString(label.Name)
+				if i < len(labels)-1 {
+					summary.WriteString(", ")
+				}
+			}
+			summary.WriteString(")")
+		}
+	}
+	return summary.String()
+}

services/projects/workflow_notifier.go

@@ -0,0 +1,417 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package projects
+
+import (
+	"context"
+	"strconv"
+	"strings"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	project_model "code.gitea.io/gitea/models/project"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/util"
+	issue_service "code.gitea.io/gitea/services/issue"
+	notify_service "code.gitea.io/gitea/services/notify"
+)
+
+func init() {
+	notify_service.RegisterNotifier(&workflowNotifier{})
+}
+
+type workflowNotifier struct {
+	notify_service.NullNotifier
+}
+
+var _ notify_service.Notifier = &workflowNotifier{}
+
+// NewNotifier create a new workflowNotifier notifier
+func NewNotifier() notify_service.Notifier {
+	return &workflowNotifier{}
+}
+
+func (m *workflowNotifier) NewIssue(ctx context.Context, issue *issues_model.Issue, mentions []*user_model.User) {
+	if err := issue.LoadRepo(ctx); err != nil {
+		log.Error("NewIssue: LoadRepo: %v", err)
+		return
+	}
+	if err := issue.LoadProject(ctx); err != nil {
+		log.Error("NewIssue: LoadProject: %v", err)
+		return
+	}
+	if issue.Project == nil {
+		// TODO: handle item opened
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+	if err != nil {
+		log.Error("NewIssue: FindWorkflowsByProjectID: %v", err)
+		return
+	}
+
+	// Find workflows for the ItemOpened event
+	for _, workflow := range workflows {
+		if workflow.WorkflowEvent == project_model.WorkflowEventItemOpened {
+			fireIssueWorkflow(ctx, workflow, issue, 0, 0)
+		}
+	}
+}
+
+func (m *workflowNotifier) NewPullRequest(ctx context.Context, pr *issues_model.PullRequest, mentions []*user_model.User) {
+	if err := pr.LoadIssue(ctx); err != nil {
+		log.Error("NewIssue: LoadIssue: %v", err)
+		return
+	}
+	issue := pr.Issue
+	m.NewIssue(ctx, issue, mentions)
+}
+
+func (m *workflowNotifier) IssueChangeStatus(ctx context.Context, doer *user_model.User, commitID string, issue *issues_model.Issue, actionComment *issues_model.Comment, isClosed bool) {
+	if err := issue.LoadRepo(ctx); err != nil {
+		log.Error("IssueChangeStatus: LoadRepo: %v", err)
+		return
+	}
+	if err := issue.LoadProject(ctx); err != nil {
+		log.Error("NewIssue: LoadProject: %v", err)
+		return
+	}
+	if issue.Project == nil {
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+	if err != nil {
+		log.Error("IssueChangeStatus: FindWorkflowsByProjectID: %v", err)
+		return
+	}
+
+	workflowEvent := util.Iif(isClosed, project_model.WorkflowEventItemClosed, project_model.WorkflowEventItemReopened)
+	// Find workflows for the specific event
+	for _, workflow := range workflows {
+		if workflow.WorkflowEvent == workflowEvent {
+			fireIssueWorkflow(ctx, workflow, issue, 0, 0)
+		}
+	}
+}
+
+func (*workflowNotifier) IssueChangeProjects(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, newProject *project_model.Project) {
+	if newProject == nil { // removed from project
+		if err := issue.LoadProject(ctx); err != nil {
+			log.Error("LoadProject: %v", err)
+			return
+		}
+		if issue.Project == nil {
+			return
+		}
+
+		workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+		if err != nil {
+			log.Error("IssueChangeStatus: FindWorkflowsByProjectID: %v", err)
+			return
+		}
+
+		// Find workflows for the ItemOpened event
+		for _, workflow := range workflows {
+			if workflow.WorkflowEvent == project_model.WorkflowEventItemRemovedFromProject {
+				fireIssueWorkflow(ctx, workflow, issue, 0, 0)
+			}
+		}
+		return
+	}
+
+	if err := issue.LoadRepo(ctx); err != nil {
+		log.Error("IssueChangeStatus: LoadRepo: %v", err)
+		return
+	}
+
+	if err := issue.LoadProject(ctx); err != nil {
+		log.Error("NewIssue: LoadProject: %v", err)
+		return
+	}
+	if issue.Project == nil || issue.Project.ID != newProject.ID {
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+	if err != nil {
+		log.Error("IssueChangeStatus: FindWorkflowsByProjectID: %v", err)
+		return
+	}
+
+	// Find workflows for the ItemOpened event
+	for _, workflow := range workflows {
+		if workflow.WorkflowEvent == project_model.WorkflowEventItemAddedToProject {
+			fireIssueWorkflow(ctx, workflow, issue, 0, 0)
+		}
+	}
+}
+
+func (*workflowNotifier) IssueChangeProjectColumn(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, oldColumnID, newColumnID int64) {
+	if err := issue.LoadRepo(ctx); err != nil {
+		log.Error("IssueChangeStatus: LoadRepo: %v", err)
+		return
+	}
+
+	if err := issue.LoadProject(ctx); err != nil {
+		log.Error("NewIssue: LoadProject: %v", err)
+		return
+	}
+
+	newColumn, err := project_model.GetColumn(ctx, newColumnID)
+	if err != nil {
+		log.Error("IssueChangeProjectColumn: GetColumn: %v", err)
+		return
+	}
+	if issue.Project == nil || issue.Project.ID != newColumn.ProjectID {
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+	if err != nil {
+		log.Error("IssueChangeStatus: FindWorkflowsByProjectID: %v", err)
+		return
+	}
+
+	// Find workflows for the ItemColumnChanged event
+	for _, workflow := range workflows {
+		if workflow.WorkflowEvent == project_model.WorkflowEventItemColumnChanged {
+			fireIssueWorkflow(ctx, workflow, issue, oldColumnID, newColumnID)
+		}
+	}
+}
+
+func (*workflowNotifier) MergePullRequest(ctx context.Context, doer *user_model.User, pr *issues_model.PullRequest) {
+	if err := pr.LoadIssue(ctx); err != nil {
+		log.Error("NewIssue: LoadIssue: %v", err)
+		return
+	}
+	issue := pr.Issue
+
+	if err := issue.LoadRepo(ctx); err != nil {
+		log.Error("IssueChangeStatus: LoadRepo: %v", err)
+		return
+	}
+
+	if err := issue.LoadProject(ctx); err != nil {
+		log.Error("NewIssue: LoadProject: %v", err)
+		return
+	}
+	if issue.Project == nil {
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+	if err != nil {
+		log.Error("IssueChangeStatus: FindWorkflowsByProjectID: %v", err)
+		return
+	}
+
+	// Find workflows for the PullRequestMerged event
+	for _, workflow := range workflows {
+		if workflow.WorkflowEvent == project_model.WorkflowEventPullRequestMerged {
+			fireIssueWorkflow(ctx, workflow, issue, 0, 0)
+		}
+	}
+}
+
+func (m *workflowNotifier) AutoMergePullRequest(ctx context.Context, doer *user_model.User, pr *issues_model.PullRequest) {
+	m.MergePullRequest(ctx, doer, pr)
+}
+
+func (*workflowNotifier) PullRequestReview(ctx context.Context, pr *issues_model.PullRequest, review *issues_model.Review, comment *issues_model.Comment, mentions []*user_model.User) {
+	if err := pr.LoadIssue(ctx); err != nil {
+		log.Error("NewIssue: LoadIssue: %v", err)
+		return
+	}
+	issue := pr.Issue
+
+	if err := issue.LoadRepo(ctx); err != nil {
+		log.Error("IssueChangeStatus: LoadRepo: %v", err)
+		return
+	}
+
+	if err := issue.LoadProject(ctx); err != nil {
+		log.Error("NewIssue: LoadProject: %v", err)
+		return
+	}
+	if issue.Project == nil {
+		return
+	}
+
+	workflows, err := project_model.FindWorkflowsByProjectID(ctx, issue.Project.ID)
+	if err != nil {
+		log.Error("IssueChangeStatus: FindWorkflowsByProjectID: %v", err)
+		return
+	}
+
+	// Find workflows for the PullRequestMerged event
+	for _, workflow := range workflows {
+		if (workflow.WorkflowEvent == project_model.WorkflowEventCodeChangesRequested && review.Type == issues_model.ReviewTypeReject) ||
+			(workflow.WorkflowEvent == project_model.WorkflowEventCodeReviewApproved && review.Type == issues_model.ReviewTypeApprove) {
+			fireIssueWorkflow(ctx, workflow, issue, 0, 0)
+		}
+	}
+}
+
+func fireIssueWorkflow(ctx context.Context, workflow *project_model.Workflow, issue *issues_model.Issue, sourceColumnID, targetColumnID int64) {
+	if !workflow.Enabled {
+		return
+	}
+
+	// Load issue labels for labels filter
+	if err := issue.LoadLabels(ctx); err != nil {
+		log.Error("LoadLabels: %v", err)
+		return
+	}
+
+	if !matchWorkflowsFilters(workflow, issue, sourceColumnID, targetColumnID) {
+		return
+	}
+
+	executeWorkflowActions(ctx, workflow, issue)
+}
+
+// matchWorkflowsFilters checks if the issue matches all filters of the workflow
+func matchWorkflowsFilters(workflow *project_model.Workflow, issue *issues_model.Issue, sourceColumnID, targetColumnID int64) bool {
+	for _, filter := range workflow.WorkflowFilters {
+		switch filter.Type {
+		case project_model.WorkflowFilterTypeIssueType:
+			// If filter value is empty, match all types
+			if filter.Value == "" {
+				continue
+			}
+			// Filter value can be "issue" or "pull_request"
+			if filter.Value == "issue" && issue.IsPull {
+				return false
+			}
+			if filter.Value == "pull_request" && !issue.IsPull {
+				return false
+			}
+		case project_model.WorkflowFilterTypeTargetColumn:
+			// If filter value is empty, match all columns
+			if filter.Value == "" {
+				continue
+			}
+			filterColumnID, _ := strconv.ParseInt(filter.Value, 10, 64)
+			if filterColumnID == 0 {
+				log.Error("Invalid column ID: %s", filter.Value)
+				return false
+			}
+			// For column changed event, check against the new column ID
+			if targetColumnID > 0 && targetColumnID != filterColumnID {
+				return false
+			}
+		case project_model.WorkflowFilterTypeSourceColumn:
+			// If filter value is empty, match all columns
+			if filter.Value == "" {
+				continue
+			}
+			filterColumnID, _ := strconv.ParseInt(filter.Value, 10, 64)
+			if filterColumnID == 0 {
+				log.Error("Invalid column ID: %s", filter.Value)
+				return false
+			}
+			// For column changed event, check against the new column ID
+			if sourceColumnID > 0 && sourceColumnID != filterColumnID {
+				return false
+			}
+		case project_model.WorkflowFilterTypeLabels:
+			// Check if issue has the specified label
+			labelID, _ := strconv.ParseInt(filter.Value, 10, 64)
+			if labelID == 0 {
+				log.Error("Invalid label ID: %s", filter.Value)
+				return false
+			}
+			// Check if issue has this label
+			hasLabel := false
+			for _, label := range issue.Labels {
+				if label.ID == labelID {
+					hasLabel = true
+					break
+				}
+			}
+			if !hasLabel {
+				return false
+			}
+		default:
+			log.Error("Unsupported filter type: %s", filter.Type)
+			return false
+		}
+	}
+	return true
+}
+
+func executeWorkflowActions(ctx context.Context, workflow *project_model.Workflow, issue *issues_model.Issue) {
+	var toAddedLables, toRemovedLables []*issues_model.Label
+
+	for _, action := range workflow.WorkflowActions {
+		switch action.Type {
+		case project_model.WorkflowActionTypeColumn:
+			columnID, _ := strconv.ParseInt(action.Value, 10, 64)
+			if columnID == 0 {
+				log.Error("Invalid column ID: %s", action.Value)
+				continue
+			}
+			column, err := project_model.GetColumnByProjectIDAndColumnID(ctx, issue.Project.ID, columnID)
+			if err != nil {
+				log.Error("GetColumnByProjectIDAndColumnID: %v", err)
+				continue
+			}
+			if err := MoveIssueToAnotherColumn(ctx, user_model.NewProjectWorkflowsUser(), issue, column); err != nil {
+				log.Error("MoveIssueToAnotherColumn: %v", err)
+				continue
+			}
+		case project_model.WorkflowActionTypeAddLabels:
+			labelID, _ := strconv.ParseInt(action.Value, 10, 64)
+			if labelID == 0 {
+				log.Error("Invalid label ID: %s", action.Value)
+				continue
+			}
+			label, err := issues_model.GetLabelByID(ctx, labelID)
+			if err != nil {
+				log.Error("GetLabelByID: %v", err)
+				continue
+			}
+			toAddedLables = append(toAddedLables, label)
+		case project_model.WorkflowActionTypeRemoveLabels:
+			labelID, _ := strconv.ParseInt(action.Value, 10, 64)
+			if labelID == 0 {
+				log.Error("Invalid label ID: %s", action.Value)
+				continue
+			}
+			label, err := issues_model.GetLabelByID(ctx, labelID)
+			if err != nil {
+				log.Error("GetLabelByID: %v", err)
+				continue
+			}
+			toRemovedLables = append(toRemovedLables, label)
+		case project_model.WorkflowActionTypeIssueState:
+			if strings.EqualFold(action.Value, "reopen") {
+				if issue.IsClosed {
+					if err := issue_service.ReopenIssue(ctx, issue, user_model.NewProjectWorkflowsUser(), ""); err != nil {
+						log.Error("ReopenIssue: %v", err)
+						continue
+					}
+				}
+			} else if strings.EqualFold(action.Value, "close") {
+				if !issue.IsClosed {
+					if err := issue_service.CloseIssue(ctx, issue, user_model.NewProjectWorkflowsUser(), ""); err != nil {
+						log.Error("CloseIssue: %v", err)
+						continue
+					}
+				}
+			}
+		default:
+			log.Error("Unsupported action type: %s", action.Type)
+		}
+	}
+
+	if len(toAddedLables)+len(toRemovedLables) > 0 {
+		if err := issue_service.AddRemoveLabels(ctx, issue, user_model.NewProjectWorkflowsUser(), toAddedLables, toRemovedLables); err != nil {
+			log.Error("AddRemoveLabels: %v", err)
+		}
+	}
+}

templates/org/projects/workflows.tmpl

@@ -0,0 +1,13 @@
+{{template "base/head" .}}
+<div role="main" aria-label="{{.Title}}" class="page-content organization repository projects view-project">
+	{{if .ContextUser.IsOrganization}}
+		{{template "org/header" .}}
+	{{else}}
+		{{template "shared/user/org_profile_avatar" .}}
+		<div class="ui container tw-mb-4">
+			{{template "user/overview/header" .}}
+		</div>
+	{{end}}
+	{{template "projects/workflows" .}}
+</div>
+{{template "base/footer" .}}

templates/projects/view.tmpl

@@ -19,6 +19,10 @@
 		</div>
 		{{if $canWriteProject}}
 			<div class="ui compact mini menu">
+				<a class="item" href="{{.Link}}/workflows">
+					{{svg "octicon-workflow"}}
+					{{ctx.Locale.Tr "projects.workflows"}}
+				</a>
 				<a class="item screen-full">
 					{{svg "octicon-screen-full"}}
 					{{ctx.Locale.Tr "projects.enter_fullscreen"}}

templates/projects/workflows.tmpl

@@ -0,0 +1,45 @@
+<div class="ui container padded projects-view">
+	<div id="project-workflows"
+		data-project-link="{{.ProjectLink}}"
+		data-event-id="{{.workflowIDStr}}"
+		data-locale-default-workflows="{{ctx.Locale.Tr "projects.workflows.default_workflows"}}"
+		data-locale-view-workflow-configuration="{{ctx.Locale.Tr "projects.workflows.view_workflow_configuration"}}"
+		data-locale-configure-workflow="{{ctx.Locale.Tr "projects.workflows.configure_workflow"}}"
+		data-locale-when="{{ctx.Locale.Tr "projects.workflows.when"}}"
+		data-locale-run-when="{{ctx.Locale.Tr "projects.workflows.run_when"}}"
+		data-locale-filters="{{ctx.Locale.Tr "projects.workflows.filters"}}"
+		data-locale-apply-to="{{ctx.Locale.Tr "projects.workflows.apply_to"}}"
+		data-locale-when-moved-from-column="{{ctx.Locale.Tr "projects.workflows.when_moved_from_column"}}"
+		data-locale-when-moved-to-column="{{ctx.Locale.Tr "projects.workflows.when_moved_to_column"}}"
+		data-locale-only-if-has-labels="{{ctx.Locale.Tr "projects.workflows.only_if_has_labels"}}"
+		data-locale-actions="{{ctx.Locale.Tr "projects.workflows.actions"}}"
+		data-locale-move-to-column="{{ctx.Locale.Tr "projects.workflows.move_to_column"}}"
+		data-locale-add-labels="{{ctx.Locale.Tr "projects.workflows.add_labels"}}"
+		data-locale-remove-labels="{{ctx.Locale.Tr "projects.workflows.remove_labels"}}"
+		data-locale-any-label="{{ctx.Locale.Tr "projects.workflows.any_label"}}"
+		data-locale-any-column="{{ctx.Locale.Tr "projects.workflows.any_column"}}"
+		data-locale-issue-state="{{ctx.Locale.Tr "projects.workflows.issue_state"}}"
+		data-locale-none="{{ctx.Locale.Tr "projects.workflows.none"}}"
+		data-locale-no-change="{{ctx.Locale.Tr "projects.workflows.no_change"}}"
+		data-locale-edit="{{ctx.Locale.Tr "projects.workflows.edit"}}"
+		data-locale-delete="{{ctx.Locale.Tr "projects.workflows.delete"}}"
+		data-locale-save="{{ctx.Locale.Tr "projects.workflows.save"}}"
+		data-locale-clone="{{ctx.Locale.Tr "projects.workflows.clone"}}"
+		data-locale-cancel="{{ctx.Locale.Tr "projects.workflows.cancel"}}"
+		data-locale-disable="{{ctx.Locale.Tr "projects.workflows.disable"}}"
+		data-locale-disabled="{{ctx.Locale.Tr "projects.workflows.disabled"}}"
+		data-locale-enable="{{ctx.Locale.Tr "projects.workflows.enable"}}"
+		data-locale-enabled="{{ctx.Locale.Tr "projects.workflows.enabled"}}"
+		data-locale-issues-and-pull-requests="{{ctx.Locale.Tr "projects.workflows.issues_and_pull_requests"}}"
+		data-locale-issues-only="{{ctx.Locale.Tr "projects.workflows.issues_only"}}"
+		data-locale-pull-requests-only="{{ctx.Locale.Tr "projects.workflows.pull_requests_only"}}"
+		data-locale-select-column="{{ctx.Locale.Tr "projects.workflows.select_column"}}"
+		data-locale-close-issue="{{ctx.Locale.Tr "projects.workflows.close_issue"}}"
+		data-locale-reopen-issue="{{ctx.Locale.Tr "projects.workflows.reopen_issue"}}"
+		data-locale-save-workflow-failed="{{ctx.Locale.Tr "projects.workflows.save_workflow_failed"}}"
+		data-locale-update-workflow-failed="{{ctx.Locale.Tr "projects.workflows.update_workflow_failed"}}"
+		data-locale-delete-workflow-failed="{{ctx.Locale.Tr "projects.workflows.delete_workflow_failed"}}"
+		data-locale-at-least-one-action-required="{{ctx.Locale.Tr "projects.workflows.at_least_one_action_required"}}"
+	>
+	</div>
+</div>

templates/repo/projects/workflows.tmpl

@@ -0,0 +1,12 @@
+{{template "base/head" .}}
+<div role="main" aria-label="{{.Title}}" class="page-content repository projects view-project">
+	{{template "repo/header" .}}
+	<div class="ui container padded">
+		<div class="tw-flex tw-justify-between tw-items-center tw-mb-4">
+			<a class="ui" href="{{.ProjectLink}}">{{svg "octicon-arrow-left"}} {{ctx.Locale.Tr "projects.workflows"}} {{.Project.Title}}</a>
+		</div>
+	</div>
+	{{template "projects/workflows" .}}
+</div>
+
+{{template "base/footer" .}}

tests/integration/issue_test.go

@@ -122,17 +122,34 @@ func TestNoLoginViewIssue(t *testing.T) {
 	MakeRequest(t, req, http.StatusOK)
 }
 
-func testNewIssue(t *testing.T, session *TestSession, user, repo, title, content string) string {
+type newIssueOptions struct {
+	Title     string
+	Content   string
+	ProjectID int64
+	LabelIDs  []int64
+}
+
+func testNewIssue(t *testing.T, session *TestSession, user, repo string, opts newIssueOptions) string {
 	req := NewRequest(t, "GET", path.Join(user, repo, "issues", "new"))
 	resp := session.MakeRequest(t, req, http.StatusOK)
 
 	htmlDoc := NewHTMLParser(t, resp.Body)
 	link, exists := htmlDoc.doc.Find("form.ui.form").Attr("action")
 	assert.True(t, exists, "The template has changed")
+	var labelIDs string
+	for i, id := range opts.LabelIDs {
+		labelIDs += strconv.FormatInt(id, 10)
+		if i < len(opts.LabelIDs)-1 {
+			labelIDs += ","
+		}
+	}
+
 	req = NewRequestWithValues(t, "POST", link, map[string]string{
-		"_csrf":   htmlDoc.GetCSRF(),
-		"title":   title,
-		"content": content,
+		"_csrf":      htmlDoc.GetCSRF(),
+		"title":      opts.Title,
+		"content":    opts.Content,
+		"project_id": strconv.FormatInt(opts.ProjectID, 10),
+		"label_ids":  labelIDs,
 	})
 	resp = session.MakeRequest(t, req, http.StatusOK)
 
@@ -142,9 +159,9 @@ func testNewIssue(t *testing.T, session *TestSession, user, repo, title, content
 
 	htmlDoc = NewHTMLParser(t, resp.Body)
 	val := htmlDoc.doc.Find("#issue-title-display").Text()
-	assert.Contains(t, val, title)
+	assert.Contains(t, val, opts.Title)
 	val = htmlDoc.doc.Find(".comment .render-content p").First().Text()
-	assert.Equal(t, content, val)
+	assert.Equal(t, opts.Content, val)
 
 	return issueURL
 }
@@ -210,13 +227,19 @@ func testIssueChangeMilestone(t *testing.T, session *TestSession, repoLink strin
 func TestNewIssue(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 }
 
 func TestEditIssue(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	issueURL := testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 
 	req := NewRequestWithValues(t, "POST", issueURL+"/content", map[string]string{
 		"_csrf":   GetUserCSRFToken(t, session),
@@ -244,7 +267,10 @@ func TestEditIssue(t *testing.T) {
 func TestIssueCommentClose(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	issueURL := testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 	testIssueAddComment(t, session, issueURL, "Test comment 1", "")
 	testIssueAddComment(t, session, issueURL, "Test comment 2", "")
 	testIssueAddComment(t, session, issueURL, "Test comment 3", "close")
@@ -260,7 +286,10 @@ func TestIssueCommentClose(t *testing.T) {
 func TestIssueCommentDelete(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	issueURL := testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 	comment1 := "Test comment 1"
 	commentID := testIssueAddComment(t, session, issueURL, comment1, "")
 	comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: commentID})
@@ -281,7 +310,10 @@ func TestIssueCommentDelete(t *testing.T) {
 func TestIssueCommentUpdate(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	issueURL := testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 	comment1 := "Test comment 1"
 	commentID := testIssueAddComment(t, session, issueURL, comment1, "")
 
@@ -310,7 +342,10 @@ func TestIssueCommentUpdate(t *testing.T) {
 func TestIssueCommentUpdateSimultaneously(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	issueURL := testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 	comment1 := "Test comment 1"
 	commentID := testIssueAddComment(t, session, issueURL, comment1, "")
 
@@ -348,7 +383,10 @@ func TestIssueCommentUpdateSimultaneously(t *testing.T) {
 func TestIssueReaction(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
 	session := loginUser(t, "user2")
-	issueURL := testNewIssue(t, session, "user2", "repo1", "Title", "Description")
+	issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+		Title:   "Title",
+		Content: "Description",
+	})
 
 	req := NewRequest(t, "GET", issueURL)
 	resp := session.MakeRequest(t, req, http.StatusOK)
@@ -448,7 +486,10 @@ func TestIssueCrossReference(t *testing.T) {
 
 func testIssueWithBean(t *testing.T, user string, repoID int64, title, content string) (string, *issues_model.Issue) {
 	session := loginUser(t, user)
-	issueURL := testNewIssue(t, session, user, fmt.Sprintf("repo%d", repoID), title, content)
+	issueURL := testNewIssue(t, session, user, fmt.Sprintf("repo%d", repoID), newIssueOptions{
+		Title:   title,
+		Content: content,
+	})
 	indexStr := issueURL[strings.LastIndexByte(issueURL, '/')+1:]
 	index, err := strconv.Atoi(indexStr)
 	assert.NoError(t, err, "Invalid issue href: %s", issueURL)

tests/integration/project_workflow_execution_test.go

@@ -0,0 +1,774 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	issues_model "code.gitea.io/gitea/models/issues"
+	project_model "code.gitea.io/gitea/models/project"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/gitrepo"
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/test"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func testCreateProjectWorkflow(t *testing.T, session *TestSession, userName, repoName string, projectID int64, event string, workflowData map[string]any) {
+	req := NewRequestWithJSON(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/workflows/%s?_csrf=%s",
+			userName, repoName, projectID, event, GetUserCSRFToken(t, session)),
+		workflowData)
+	resp := session.MakeRequest(t, req, http.StatusOK)
+
+	var result map[string]any
+	err := json.Unmarshal(resp.Body.Bytes(), &result)
+	assert.NoError(t, err)
+	assert.True(t, result["success"].(bool))
+}
+
+func testNewIssueReturnIssue(t *testing.T, session *TestSession, repo *repo_model.Repository, opts newIssueOptions) int64 {
+	testNewIssue(t, session, repo.OwnerName, repo.Name, opts)
+
+	// Get the created issue from database to verify
+	issues, err := issues_model.Issues(t.Context(), &issues_model.IssuesOptions{
+		RepoIDs:  []int64{repo.ID},
+		SortType: "newest",
+		Paginator: &db.ListOptions{
+			PageSize: 1,
+		},
+	})
+	assert.NoError(t, err)
+	assert.NotEmpty(t, issues)
+	return issues[0].ID
+}
+
+// testAddIssueToProject adds the issue to the project via web form if projectID == 0, it removes the issue from the project
+func testAddIssueToProject(t *testing.T, session *TestSession, userName, repoName string, projectID, issueID int64) {
+	addToProjectReq := NewRequestWithValues(t, "POST", fmt.Sprintf("/%s/%s/issues/projects?_csrf=%s",
+		userName, repoName, GetUserCSRFToken(t, session)),
+		map[string]string{
+			"_csrf":     GetUserCSRFToken(t, session),
+			"id":        strconv.FormatInt(projectID, 10),
+			"issue_ids": strconv.FormatInt(issueID, 10),
+		})
+	session.MakeRequest(t, addToProjectReq, http.StatusOK)
+}
+
+// TestProjectWorkflowExecutionItemOpened tests workflow execution when an issue is added to project
+func TestProjectWorkflowExecutionItemOpened(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create project and columns
+	project := &project_model.Project{
+		Title:        "Test Workflow Execution",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	assert.NoError(t, project_model.NewProject(t.Context(), project))
+
+	columnToDo := &project_model.Column{
+		Title:     "To Do",
+		ProjectID: project.ID,
+	}
+	assert.NoError(t, project_model.NewColumn(t.Context(), columnToDo))
+
+	// Create label
+	label := &issues_model.Label{
+		RepoID: repo.ID,
+		Name:   "bug",
+		Color:  "ee0701",
+	}
+	assert.NoError(t, issues_model.NewLabel(t.Context(), label))
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow via HTTP: when item is opened, move to "To Do" and add "bug" label
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "item_opened", map[string]any{
+		"event_id": string(project_model.WorkflowEventItemOpened),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeIssueType): "issue",
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeColumn):    strconv.FormatInt(columnToDo.ID, 10),
+			string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(label.ID, 10)},
+		},
+	})
+
+	issueID := testNewIssueReturnIssue(t, session, repo, newIssueOptions{
+		Title:     "Test Issue for Workflow",
+		Content:   "This should trigger item_opened workflow",
+		ProjectID: project.ID,
+	})
+
+	// Verify workflow executed: issue moved to "To Do" and has "bug" label
+	issue, err := issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+
+	projectIssue := &project_model.ProjectIssue{}
+	has, err := db.GetEngine(t.Context()).Where("issue_id=?", issue.ID).Get(projectIssue)
+	assert.NoError(t, err)
+	assert.True(t, has)
+	assert.Equal(t, columnToDo.ID, projectIssue.ProjectColumnID)
+
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+	assert.Len(t, issue.Labels, 1)
+	assert.Equal(t, label.ID, issue.Labels[0].ID)
+}
+
+func TestProjectWorkflowExecutionItemAddedToProject(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create project and columns
+	project := &project_model.Project{
+		Title:        "Test Workflow Execution",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	assert.NoError(t, project_model.NewProject(t.Context(), project))
+
+	columnToDo := &project_model.Column{
+		Title:     "To Do",
+		ProjectID: project.ID,
+	}
+	assert.NoError(t, project_model.NewColumn(t.Context(), columnToDo))
+
+	// Create label
+	label := &issues_model.Label{
+		RepoID: repo.ID,
+		Name:   "bug",
+		Color:  "ee0701",
+	}
+	assert.NoError(t, issues_model.NewLabel(t.Context(), label))
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow via HTTP: when item added to project, move to "To Do" and add "bug" label
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "item_added_to_project", map[string]any{
+		"event_id": string(project_model.WorkflowEventItemAddedToProject),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeIssueType): "issue",
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeColumn):    strconv.FormatInt(columnToDo.ID, 10),
+			string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(label.ID, 10)},
+		},
+	})
+
+	issueID := testNewIssueReturnIssue(t, session, repo, newIssueOptions{
+		Title:   "Test Issue for Workflow",
+		Content: "This should trigger workflow when added to project",
+	})
+
+	// Add issue to project via Web form - this triggers the workflow
+	testAddIssueToProject(t, session, user.Name, repo.Name, project.ID, issueID)
+
+	// Verify workflow executed: issue moved to "To Do" and has "bug" label
+	issue, err := issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+
+	projectIssue := &project_model.ProjectIssue{}
+	has, err := db.GetEngine(t.Context()).Where("issue_id=?", issue.ID).Get(projectIssue)
+	assert.NoError(t, err)
+	assert.True(t, has)
+	assert.Equal(t, columnToDo.ID, projectIssue.ProjectColumnID)
+
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+	assert.Len(t, issue.Labels, 1)
+	assert.Equal(t, label.ID, issue.Labels[0].ID)
+}
+
+func TestProjectWorkflowExecutionItemRemovedFromProject(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create project and columns
+	project := &project_model.Project{
+		Title:        "Test Workflow Execution",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	assert.NoError(t, project_model.NewProject(t.Context(), project))
+
+	columnToDo := &project_model.Column{
+		Title:     "To Do",
+		ProjectID: project.ID,
+	}
+	assert.NoError(t, project_model.NewColumn(t.Context(), columnToDo))
+
+	// Create label
+	label := &issues_model.Label{
+		RepoID: repo.ID,
+		Name:   "no-project",
+		Color:  "ee0701",
+	}
+	assert.NoError(t, issues_model.NewLabel(t.Context(), label))
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow via HTTP: when item added to project, move to "To Do" and add "bug" label
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "item_removed_from_project", map[string]any{
+		"event_id": string(project_model.WorkflowEventItemRemovedFromProject),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeIssueType): "issue",
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(label.ID, 10)},
+		},
+	})
+
+	issueID := testNewIssueReturnIssue(t, session, repo, newIssueOptions{
+		Title:     "Test Issue for Workflow",
+		Content:   "This should trigger workflow when removed from project",
+		ProjectID: project.ID,
+	})
+
+	// remove issue from the project to trigger the workflow
+	testAddIssueToProject(t, session, user.Name, repo.Name, 0, issueID)
+
+	issue, err := issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+	assert.NoError(t, issue.LoadProject(t.Context()))
+	assert.Nil(t, issue.Project)
+
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+	assert.Len(t, issue.Labels, 1)
+	assert.Equal(t, label.ID, issue.Labels[0].ID)
+}
+
+// TestProjectWorkflowExecutionItemClosed tests workflow when issue is closed
+func TestProjectWorkflowExecutionItemClosed(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	project := &project_model.Project{
+		Title:        "Test Close Workflow",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	columnDone := &project_model.Column{
+		Title:     "Done",
+		ProjectID: project.ID,
+	}
+	err = project_model.NewColumn(t.Context(), columnDone)
+	assert.NoError(t, err)
+
+	labelCompleted := &issues_model.Label{
+		RepoID: repo.ID,
+		Name:   "completed",
+		Color:  "00ff00",
+	}
+	err = issues_model.NewLabel(t.Context(), labelCompleted)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow: when closed, move to "Done" and add "completed" label
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "item_closed", map[string]any{
+		"event_id": string(project_model.WorkflowEventItemClosed),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeIssueType): "issue",
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeColumn):    strconv.FormatInt(columnDone.ID, 10),
+			string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(labelCompleted.ID, 10)},
+		},
+	})
+
+	issueID := testNewIssueReturnIssue(t, session, repo, newIssueOptions{
+		Title:     "Test Issue for Workflow",
+		Content:   "This should trigger workflow when item is closed",
+		ProjectID: project.ID,
+	})
+
+	issue, err := issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+	assert.False(t, issue.IsClosed)
+	assert.NoError(t, issue.LoadRepo(t.Context()))
+
+	// Close issue via API
+	testIssueAddComment(t, session, issue.Link(), "Test comment 3", "close")
+
+	// Verify workflow executed
+	issue, err = issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+	assert.True(t, issue.IsClosed)
+
+	projectIssue := &project_model.ProjectIssue{}
+	has, err := db.GetEngine(t.Context()).Where("issue_id=?", issue.ID).Get(projectIssue)
+	assert.NoError(t, err)
+	assert.True(t, has)
+	assert.Equal(t, columnDone.ID, projectIssue.ProjectColumnID)
+
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+	hasLabel := false
+	for _, l := range issue.Labels {
+		if l.ID == labelCompleted.ID {
+			hasLabel = true
+			break
+		}
+	}
+	assert.True(t, hasLabel)
+}
+
+func TestProjectWorkflowExecutionItemReopened(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	project := &project_model.Project{
+		Title:        "Test Close Workflow",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	columnDone := &project_model.Column{
+		Title:     "Done",
+		ProjectID: project.ID,
+	}
+	err = project_model.NewColumn(t.Context(), columnDone)
+	assert.NoError(t, err)
+
+	labelCompleted := &issues_model.Label{
+		RepoID: repo.ID,
+		Name:   "completed",
+		Color:  "00ff00",
+	}
+	err = issues_model.NewLabel(t.Context(), labelCompleted)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "item_reopened",
+		map[string]any{
+			"event_id": string(project_model.WorkflowEventItemReopened),
+			"filters": map[string]any{
+				string(project_model.WorkflowFilterTypeIssueType): "issue",
+				string(project_model.WorkflowFilterTypeLabels):    strconv.FormatInt(labelCompleted.ID, 10),
+			},
+			"actions": map[string]any{
+				string(project_model.WorkflowActionTypeColumn): strconv.FormatInt(columnDone.ID, 10),
+			},
+		})
+
+	issueID := testNewIssueReturnIssue(t, session, repo, newIssueOptions{
+		Title:     "Test Issue for Workflow",
+		Content:   "This should trigger workflow when item is reopened",
+		ProjectID: project.ID,
+		LabelIDs:  []int64{labelCompleted.ID},
+	})
+
+	issue, err := issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+	assert.False(t, issue.IsClosed)
+	assert.NoError(t, issue.LoadRepo(t.Context()))
+
+	// Reopen issue
+	testIssueAddComment(t, session, issue.Link(), "Test comment 3", "close")
+	testIssueAddComment(t, session, issue.Link(), "Test comment 3", "reopen")
+
+	// Reload and Verify workflow executed
+	issue, err = issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+	assert.False(t, issue.IsClosed)
+
+	projectIssue := &project_model.ProjectIssue{}
+	has, err := db.GetEngine(t.Context()).Where("issue_id=?", issue.ID).Get(projectIssue)
+	assert.NoError(t, err)
+	assert.True(t, has)
+	assert.Equal(t, columnDone.ID, projectIssue.ProjectColumnID)
+
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+	hasLabel := false
+	for _, l := range issue.Labels {
+		if l.ID == labelCompleted.ID {
+			hasLabel = true
+			break
+		}
+	}
+	assert.True(t, hasLabel)
+}
+
+// TestProjectWorkflowExecutionColumnChanged tests workflow when moving between columns
+func TestProjectWorkflowExecutionColumnChanged(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	project := &project_model.Project{
+		Title:        "Test Column Change",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	columnToDo := &project_model.Column{Title: "To Do", ProjectID: project.ID}
+	err = project_model.NewColumn(t.Context(), columnToDo)
+	assert.NoError(t, err)
+
+	columnDone := &project_model.Column{Title: "Done", ProjectID: project.ID}
+	err = project_model.NewColumn(t.Context(), columnDone)
+	assert.NoError(t, err)
+
+	labelWIP := &issues_model.Label{RepoID: repo.ID, Name: "wip", Color: "fbca04"}
+	err = issues_model.NewLabel(t.Context(), labelWIP)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow: when moved to "Done", remove "wip" and close
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "item_column_changed", map[string]any{
+		"event_id": string(project_model.WorkflowEventItemColumnChanged),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeTargetColumn): strconv.FormatInt(columnDone.ID, 10),
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeRemoveLabels): []string{strconv.FormatInt(labelWIP.ID, 10)},
+			string(project_model.WorkflowActionTypeIssueState):   "close",
+		},
+	})
+
+	// Create issue with "wip" label
+	issueID := testNewIssueReturnIssue(t, session, repo, newIssueOptions{
+		Title:     "Test Column Change",
+		Content:   "Will move columns",
+		ProjectID: project.ID,
+		LabelIDs:  []int64{labelWIP.ID},
+	})
+
+	// Move to "To Do" first
+	moveReq := NewRequestWithJSON(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/%d/move?_csrf=%s", user.Name, repo.Name, project.ID, columnToDo.ID, GetUserCSRFToken(t, session)),
+		map[string]any{
+			"issues": []map[string]any{
+				{
+					"issueID": issueID,
+					"sorting": 0,
+				},
+			},
+		})
+	session.MakeRequest(t, moveReq, http.StatusOK)
+
+	// Move to "Done" - triggers workflow
+	moveReq = NewRequestWithJSON(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/%d/move?_csrf=%s", user.Name, repo.Name, project.ID, columnDone.ID, GetUserCSRFToken(t, session)),
+		map[string]any{
+			"issues": []map[string]any{
+				{
+					"issueID": issueID,
+					"sorting": 0,
+				},
+			},
+		})
+	session.MakeRequest(t, moveReq, http.StatusOK)
+
+	// Verify workflow executed
+	issue, err := issues_model.GetIssueByID(t.Context(), issueID)
+	assert.NoError(t, err)
+	assert.True(t, issue.IsClosed, "Issue should be closed")
+
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+	hasWIP := false
+	for _, l := range issue.Labels {
+		if l.ID == labelWIP.ID {
+			hasWIP = true
+			break
+		}
+	}
+	assert.False(t, hasWIP, "WIP label should be removed")
+}
+
+func TestProjectWorkflowExecutionCodeChangesRequested(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	// Use existing PR #3 from fixtures (issue_id: 3, pull_request id: 2)
+	pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: 2})
+	assert.NoError(t, pr.LoadIssue(t.Context()))
+	assert.NoError(t, pr.LoadBaseRepo(t.Context()))
+
+	repo := pr.BaseRepo
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+
+	project := &project_model.Project{
+		Title:        "Test Code Changes Requested",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	columnInProgress := &project_model.Column{Title: "In Progress", ProjectID: project.ID}
+	err = project_model.NewColumn(t.Context(), columnInProgress)
+	assert.NoError(t, err)
+
+	labelNeedChange := &issues_model.Label{RepoID: repo.ID, Name: "needs-changes", Color: "fbca04"}
+	err = issues_model.NewLabel(t.Context(), labelNeedChange)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow: when code changes requested, add "needs-changes" label
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "code_changes_requested", map[string]any{
+		"event_id": string(project_model.WorkflowEventCodeChangesRequested),
+		"filters":  map[string]any{},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(labelNeedChange.ID, 10)},
+		},
+	})
+
+	// Add PR to project
+	testAddIssueToProject(t, session, user.Name, repo.Name, project.ID, pr.Issue.ID)
+
+	// User 2 submits a "REQUEST_CHANGES" review
+	user2Session := loginUser(t, "user2")
+	prURL := fmt.Sprintf("/%s/%s/pulls/%d", user.Name, repo.Name, pr.Issue.Index)
+	req := NewRequest(t, "GET", prURL+"/files")
+	resp := user2Session.MakeRequest(t, req, http.StatusOK)
+	htmlDoc := NewHTMLParser(t, resp.Body)
+	gitRepo, err := gitrepo.OpenRepository(t.Context(), pr.BaseRepo)
+	assert.NoError(t, err)
+	defer gitRepo.Close()
+
+	commitID, err := gitRepo.GetRefCommitID(pr.GetGitHeadRefName())
+	assert.NoError(t, err)
+
+	testSubmitReview(t, user2Session, htmlDoc.GetCSRF(), user.Name, repo.Name, strconv.FormatInt(pr.Issue.Index, 10), commitID, "reject", http.StatusOK)
+
+	// Verify workflow executed: PR should have "needs-changes" label
+	issue, err := issues_model.GetIssueByID(t.Context(), pr.Issue.ID)
+	assert.NoError(t, err)
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+
+	hasNeedChangeLabel := false
+	for _, l := range issue.Labels {
+		if l.ID == labelNeedChange.ID {
+			hasNeedChangeLabel = true
+			break
+		}
+	}
+	assert.True(t, hasNeedChangeLabel, "needs-changes label should be added")
+}
+
+func TestProjectWorkflowExecutionCodeReviewApproved(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	// Use existing PR #3 from fixtures (issue_id: 3, pull_request id: 2)
+	pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: 2})
+	assert.NoError(t, pr.LoadIssue(t.Context()))
+	assert.NoError(t, pr.LoadBaseRepo(t.Context()))
+
+	repo := pr.BaseRepo
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+
+	project := &project_model.Project{
+		Title:        "Test Code Review Approved",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	columnReadyToMerge := &project_model.Column{Title: "Ready to Merge", ProjectID: project.ID}
+	err = project_model.NewColumn(t.Context(), columnReadyToMerge)
+	assert.NoError(t, err)
+
+	labelApproved := &issues_model.Label{RepoID: repo.ID, Name: "approved", Color: "00ff00"}
+	err = issues_model.NewLabel(t.Context(), labelApproved)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Create workflow: when code review approved, move to "Ready to Merge" and add "approved" label
+	testCreateProjectWorkflow(t, session, user.Name, repo.Name, project.ID, "code_review_approved", map[string]any{
+		"event_id": string(project_model.WorkflowEventCodeReviewApproved),
+		"filters":  map[string]any{},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeColumn):    strconv.FormatInt(columnReadyToMerge.ID, 10),
+			string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(labelApproved.ID, 10)},
+		},
+	})
+
+	// Add PR to project
+	testAddIssueToProject(t, session, user.Name, repo.Name, project.ID, pr.Issue.ID)
+
+	// User 2 submits an "APPROVE" review
+	user2Session := loginUser(t, "user2")
+	prURL := fmt.Sprintf("/%s/%s/pulls/%d", user.Name, repo.Name, pr.Issue.Index)
+	req := NewRequest(t, "GET", prURL+"/files")
+	resp := user2Session.MakeRequest(t, req, http.StatusOK)
+	htmlDoc := NewHTMLParser(t, resp.Body)
+	gitRepo, err := gitrepo.OpenRepository(t.Context(), pr.BaseRepo)
+	assert.NoError(t, err)
+	defer gitRepo.Close()
+
+	commitID, err := gitRepo.GetRefCommitID(pr.GetGitHeadRefName())
+	assert.NoError(t, err)
+
+	testSubmitReview(t, user2Session, htmlDoc.GetCSRF(), user.Name, repo.Name, strconv.FormatInt(pr.Issue.Index, 10), commitID, "approve", http.StatusOK)
+
+	// Verify workflow executed: PR should be in "Ready to Merge" column and have "approved" label
+	issue, err := issues_model.GetIssueByID(t.Context(), pr.Issue.ID)
+	assert.NoError(t, err)
+	err = issue.LoadLabels(t.Context())
+	assert.NoError(t, err)
+
+	hasApprovedLabel := false
+	for _, l := range issue.Labels {
+		if l.ID == labelApproved.ID {
+			hasApprovedLabel = true
+			break
+		}
+	}
+	assert.True(t, hasApprovedLabel, "approved label should be added")
+
+	// Check column
+	projectIssue := &project_model.ProjectIssue{}
+	has, err := db.GetEngine(t.Context()).Where("issue_id=?", issue.ID).Get(projectIssue)
+	assert.NoError(t, err)
+	assert.True(t, has)
+	assert.Equal(t, columnReadyToMerge.ID, projectIssue.ProjectColumnID)
+}
+
+func TestProjectWorkflowExecutionPullRequestMerged(t *testing.T) {
+	onGiteaRun(t, func(t *testing.T, u *url.URL) {
+		// Fork repo1 and create a PR that can be merged
+		session := loginUser(t, "user1")
+		testRepoFork(t, session, "user2", "repo1", "user1", "repo1", "")
+		testEditFile(t, session, "user1", "repo1", "master", "README.md", "Hello, World (Edited for merge test)\n")
+
+		// Get the base repo
+		repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{OwnerName: "user2", Name: "repo1"})
+
+		// Create project in base repo
+		project := &project_model.Project{
+			Title:        "Test PR Merged",
+			RepoID:       repo.ID,
+			Type:         project_model.TypeRepository,
+			TemplateType: project_model.TemplateTypeNone,
+		}
+		err := project_model.NewProject(t.Context(), project)
+		assert.NoError(t, err)
+
+		columnDone := &project_model.Column{Title: "Done", ProjectID: project.ID}
+		err = project_model.NewColumn(t.Context(), columnDone)
+		assert.NoError(t, err)
+
+		labelMerged := &issues_model.Label{RepoID: repo.ID, Name: "merged", Color: "6f42c1"}
+		err = issues_model.NewLabel(t.Context(), labelMerged)
+		assert.NoError(t, err)
+
+		// Login as user2 (repo owner) to create workflow
+		user2Session := loginUser(t, "user2")
+
+		// Create workflow: when PR merged, move to "Done" and add "merged" label
+		testCreateProjectWorkflow(t, user2Session, "user2", "repo1", project.ID, "pull_request_merged", map[string]any{
+			"event_id": string(project_model.WorkflowEventPullRequestMerged),
+			"filters":  map[string]any{},
+			"actions": map[string]any{
+				string(project_model.WorkflowActionTypeColumn):    strconv.FormatInt(columnDone.ID, 10),
+				string(project_model.WorkflowActionTypeAddLabels): []string{strconv.FormatInt(labelMerged.ID, 10)},
+			},
+		})
+
+		// Create PR from user1's fork to user2's repo
+		resp := testPullCreate(t, session, "user1", "repo1", false, "master", "master", "Test PR for Merge Workflow")
+
+		// Get PR details from redirect URL
+		elem := strings.Split(test.RedirectURL(resp), "/")
+		assert.Equal(t, "pulls", elem[3])
+		prNum := elem[4]
+
+		// Load the PR
+		prNumInt, err := strconv.ParseInt(prNum, 10, 64)
+		assert.NoError(t, err)
+		pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{BaseRepoID: repo.ID, Index: prNumInt})
+		assert.NoError(t, pr.LoadIssue(t.Context()))
+
+		// Add PR to project (as user2, the repo owner)
+		testAddIssueToProject(t, user2Session, "user2", "repo1", project.ID, pr.Issue.ID)
+
+		// Merge the PR (as user2, who has permission)
+		prURL := "/user2/repo1/pulls/" + prNum
+		req := NewRequest(t, "GET", prURL)
+		resp = user2Session.MakeRequest(t, req, http.StatusOK)
+		htmlDoc := NewHTMLParser(t, resp.Body)
+
+		req = NewRequestWithValues(t, "POST", path.Join(prURL, "merge"), map[string]string{
+			"_csrf": htmlDoc.GetCSRF(),
+			"do":    string(repo_model.MergeStyleMerge),
+		})
+		user2Session.MakeRequest(t, req, http.StatusOK)
+
+		// Verify workflow executed: PR should be in "Done" column and have "merged" label
+		issue, err := issues_model.GetIssueByID(t.Context(), pr.Issue.ID)
+		assert.NoError(t, err)
+		err = issue.LoadLabels(t.Context())
+		assert.NoError(t, err)
+
+		hasMergedLabel := false
+		for _, l := range issue.Labels {
+			if l.ID == labelMerged.ID {
+				hasMergedLabel = true
+				break
+			}
+		}
+		assert.True(t, hasMergedLabel, "merged label should be added")
+
+		// Check column
+		projectIssue := &project_model.ProjectIssue{}
+		has, err := db.GetEngine(t.Context()).Where("issue_id=?", issue.ID).Get(projectIssue)
+		assert.NoError(t, err)
+		assert.True(t, has)
+		assert.Equal(t, columnDone.ID, projectIssue.ProjectColumnID)
+
+		// Verify PR is merged
+		pr, err = issues_model.GetPullRequestByID(t.Context(), pr.ID)
+		assert.NoError(t, err)
+		assert.True(t, pr.HasMerged, "PR should be merged")
+	})
+}

tests/integration/project_workflow_test.go

@@ -0,0 +1,557 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	project_model "code.gitea.io/gitea/models/project"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestProjectWorkflowsPage(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflows",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	// Create columns for the project
+	column1 := &project_model.Column{
+		Title:     "To Do",
+		ProjectID: project.ID,
+	}
+	err = project_model.NewColumn(t.Context(), column1)
+	assert.NoError(t, err)
+
+	column2 := &project_model.Column{
+		Title:     "Done",
+		ProjectID: project.ID,
+	}
+	err = project_model.NewColumn(t.Context(), column2)
+	assert.NoError(t, err)
+
+	// Create some workflows
+	workflow1 := &project_model.Workflow{
+		ProjectID:     project.ID,
+		WorkflowEvent: project_model.WorkflowEventItemOpened,
+		WorkflowFilters: []project_model.WorkflowFilter{
+			{
+				Type:  project_model.WorkflowFilterTypeIssueType,
+				Value: "issue",
+			},
+		},
+		WorkflowActions: []project_model.WorkflowAction{
+			{
+				Type:  project_model.WorkflowActionTypeColumn,
+				Value: strconv.FormatInt(column1.ID, 10),
+			},
+		},
+		Enabled: true,
+	}
+	err = project_model.CreateWorkflow(t.Context(), workflow1)
+	assert.NoError(t, err)
+
+	workflow2 := &project_model.Workflow{
+		ProjectID:     project.ID,
+		WorkflowEvent: project_model.WorkflowEventItemClosed,
+		WorkflowFilters: []project_model.WorkflowFilter{
+			{
+				Type:  project_model.WorkflowFilterTypeIssueType,
+				Value: "pull_request",
+			},
+		},
+		WorkflowActions: []project_model.WorkflowAction{
+			{
+				Type:  project_model.WorkflowActionTypeColumn,
+				Value: strconv.FormatInt(column2.ID, 10),
+			},
+		},
+		Enabled: false, // Disabled workflow
+	}
+	err = project_model.CreateWorkflow(t.Context(), workflow2)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Test accessing workflows page
+	req := NewRequest(t, "GET", fmt.Sprintf("/%s/%s/projects/%d/workflows", user.Name, repo.Name, project.ID))
+	resp := session.MakeRequest(t, req, http.StatusOK)
+
+	htmlDoc := NewHTMLParser(t, resp.Body)
+
+	// Verify the main workflow container exists
+	assert.Positive(t, htmlDoc.Find("#project-workflows").Length(), "Main workflow container should exist")
+
+	// Verify data attributes are set correctly
+	workflowDiv := htmlDoc.Find("#project-workflows")
+	assert.Positive(t, workflowDiv.Length(), "Workflow div should exist")
+
+	// Check that locale data attributes exist
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-default-workflows", ""), "data-locale-default-workflows should be set")
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-when", ""), "data-locale-when should be set")
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-actions", ""), "data-locale-actions should be set")
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-filters", ""), "data-locale-filters should be set")
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-close-issue", ""), "data-locale-close-issue should be set")
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-reopen-issue", ""), "data-locale-reopen-issue should be set")
+	assert.NotEmpty(t, workflowDiv.AttrOr("data-locale-issues-and-pull-requests", ""), "data-locale-issues-and-pull-requests should be set")
+
+	// Verify project link is set
+	projectLink := workflowDiv.AttrOr("data-project-link", "")
+	assert.Equal(t, fmt.Sprintf("/%s/%s/projects/%d", user.Name, repo.Name, project.ID), projectLink, "Project link should be correct")
+
+	// Test that unauthenticated users cannot access
+	req = NewRequest(t, "GET", fmt.Sprintf("/%s/%s/projects/%d/workflows", user.Name, repo.Name, project.ID))
+	MakeRequest(t, req, http.StatusNotFound)
+
+	// Test accessing non-existent project workflows page
+	req = NewRequest(t, "GET", fmt.Sprintf("/%s/%s/projects/999999/workflows", user.Name, repo.Name))
+	session.MakeRequest(t, req, http.StatusNotFound)
+
+	// Verify workflows were created
+	workflows, err := project_model.FindWorkflowsByProjectID(t.Context(), project.ID)
+	assert.NoError(t, err)
+	assert.Len(t, workflows, 2, "Should have 2 workflows")
+
+	// Verify workflow details
+	assert.Equal(t, project_model.WorkflowEventItemOpened, workflows[0].WorkflowEvent)
+	assert.True(t, workflows[0].Enabled, "First workflow should be enabled")
+	assert.Equal(t, project_model.WorkflowEventItemClosed, workflows[1].WorkflowEvent)
+	assert.False(t, workflows[1].Enabled, "Second workflow should be disabled")
+}
+
+func TestProjectWorkflowCreate(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflow Create",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	// Create a column
+	column := &project_model.Column{
+		Title:     "Test Column",
+		ProjectID: project.ID,
+	}
+	err = project_model.NewColumn(t.Context(), column)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Create a workflow via API
+	workflowData := map[string]any{
+		"event_id": string(project_model.WorkflowEventItemOpened),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeIssueType): "issue",
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeColumn): strconv.FormatInt(column.ID, 10),
+		},
+	}
+
+	body, err := json.Marshal(workflowData)
+	assert.NoError(t, err)
+
+	req := NewRequestWithBody(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/workflows/item_opened?_csrf=%s", user.Name, repo.Name, project.ID, GetUserCSRFToken(t, session)),
+		strings.NewReader(string(body)))
+	req.Header.Set("Content-Type", "application/json")
+	resp := session.MakeRequest(t, req, http.StatusOK)
+
+	// Parse response
+	var result map[string]any
+	err = json.Unmarshal(resp.Body.Bytes(), &result)
+	assert.NoError(t, err)
+	assert.True(t, result["success"].(bool))
+
+	// Verify workflow was created
+	workflows, err := project_model.FindWorkflowsByProjectID(t.Context(), project.ID)
+	assert.NoError(t, err)
+	assert.Len(t, workflows, 1)
+	assert.Equal(t, project_model.WorkflowEventItemOpened, workflows[0].WorkflowEvent)
+	assert.True(t, workflows[0].Enabled)
+}
+
+func TestProjectWorkflowUpdate(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflow Update",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	// Create a column
+	column := &project_model.Column{
+		Title:     "Test Column",
+		ProjectID: project.ID,
+	}
+	err = project_model.NewColumn(t.Context(), column)
+	assert.NoError(t, err)
+
+	// Create a workflow
+	workflow := &project_model.Workflow{
+		ProjectID:     project.ID,
+		WorkflowEvent: project_model.WorkflowEventItemOpened,
+		WorkflowFilters: []project_model.WorkflowFilter{
+			{
+				Type:  project_model.WorkflowFilterTypeIssueType,
+				Value: "issue",
+			},
+		},
+		WorkflowActions: []project_model.WorkflowAction{
+			{
+				Type:  project_model.WorkflowActionTypeColumn,
+				Value: strconv.FormatInt(column.ID, 10),
+			},
+		},
+		Enabled: true,
+	}
+	err = project_model.CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Update the workflow
+	updateData := map[string]any{
+		"event_id": strconv.FormatInt(workflow.ID, 10),
+		"filters": map[string]any{
+			string(project_model.WorkflowFilterTypeIssueType): "pull_request", // Change to PR
+		},
+		"actions": map[string]any{
+			string(project_model.WorkflowActionTypeColumn): strconv.FormatInt(column.ID, 10),
+		},
+	}
+
+	body, err := json.Marshal(updateData)
+	assert.NoError(t, err)
+
+	req := NewRequestWithBody(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/workflows/%d?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session)),
+		strings.NewReader(string(body)))
+	req.Header.Set("Content-Type", "application/json")
+	resp := session.MakeRequest(t, req, http.StatusOK)
+
+	// Parse response
+	var result map[string]any
+	err = json.Unmarshal(resp.Body.Bytes(), &result)
+	assert.NoError(t, err)
+	assert.True(t, result["success"].(bool))
+
+	// Verify workflow was updated
+	updatedWorkflow, err := project_model.GetWorkflowByID(t.Context(), workflow.ID)
+	assert.NoError(t, err)
+	assert.True(t, updatedWorkflow.Enabled)
+	assert.Len(t, updatedWorkflow.WorkflowFilters, 1)
+	assert.Equal(t, "pull_request", updatedWorkflow.WorkflowFilters[0].Value)
+}
+
+func TestProjectWorkflowToggleStatus(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflow Status",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	// Create a workflow that is initially enabled
+	workflow := &project_model.Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   project_model.WorkflowEventItemOpened,
+		WorkflowFilters: []project_model.WorkflowFilter{},
+		WorkflowActions: []project_model.WorkflowAction{},
+		Enabled:         true,
+	}
+	err = project_model.CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Test 1: Toggle status from enabled to disabled
+	t.Run("Disable workflow", func(t *testing.T) {
+		req := NewRequestWithValues(t, "POST",
+			fmt.Sprintf("/%s/%s/projects/%d/workflows/%d/status?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session)),
+			map[string]string{
+				"enabled": "false",
+			})
+		resp := session.MakeRequest(t, req, http.StatusOK)
+
+		// Parse response
+		var result map[string]any
+		err = json.Unmarshal(resp.Body.Bytes(), &result)
+		assert.NoError(t, err)
+		assert.True(t, result["success"].(bool), "Response should indicate success")
+
+		// Verify status was changed to disabled
+		updatedWorkflow, err := project_model.GetWorkflowByID(t.Context(), workflow.ID)
+		assert.NoError(t, err)
+		assert.False(t, updatedWorkflow.Enabled, "Workflow should be disabled")
+	})
+
+	// Test 2: Toggle status from disabled to enabled
+	t.Run("Enable workflow", func(t *testing.T) {
+		req := NewRequestWithValues(t, "POST",
+			fmt.Sprintf("/%s/%s/projects/%d/workflows/%d/status?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session)),
+			map[string]string{
+				"enabled": "true",
+			})
+		resp := session.MakeRequest(t, req, http.StatusOK)
+
+		// Parse response
+		var result map[string]any
+		err = json.Unmarshal(resp.Body.Bytes(), &result)
+		assert.NoError(t, err)
+		assert.True(t, result["success"].(bool), "Response should indicate success")
+
+		// Verify status was changed back to enabled
+		updatedWorkflow, err := project_model.GetWorkflowByID(t.Context(), workflow.ID)
+		assert.NoError(t, err)
+		assert.True(t, updatedWorkflow.Enabled, "Workflow should be enabled")
+	})
+}
+
+func TestProjectWorkflowDelete(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflow Delete",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	// Create a workflow
+	workflow := &project_model.Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   project_model.WorkflowEventItemOpened,
+		WorkflowFilters: []project_model.WorkflowFilter{},
+		WorkflowActions: []project_model.WorkflowAction{},
+		Enabled:         true,
+	}
+	err = project_model.CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Delete the workflow
+	req := NewRequest(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/workflows/%d/delete?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session)))
+	resp := session.MakeRequest(t, req, http.StatusOK)
+
+	// Parse response
+	var result map[string]any
+	err = json.Unmarshal(resp.Body.Bytes(), &result)
+	assert.NoError(t, err)
+	assert.True(t, result["success"].(bool), "Delete response should indicate success")
+
+	// Verify workflow was deleted - should return ErrNotExist
+	_, err = project_model.GetWorkflowByID(t.Context(), workflow.ID)
+	assert.Error(t, err, "Should return an error when workflow doesn't exist")
+	assert.True(t, db.IsErrNotExist(err), "Error should be ErrNotExist type")
+
+	// Verify we cannot delete it again (should fail gracefully)
+	req = NewRequest(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/workflows/%d/delete?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session)))
+	session.MakeRequest(t, req, http.StatusNotFound)
+}
+
+func TestProjectWorkflowPermissions(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflow Permissions",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	// Create a workflow
+	workflow := &project_model.Workflow{
+		ProjectID:       project.ID,
+		WorkflowEvent:   project_model.WorkflowEventItemOpened,
+		WorkflowFilters: []project_model.WorkflowFilter{},
+		WorkflowActions: []project_model.WorkflowAction{},
+		Enabled:         true,
+	}
+	err = project_model.CreateWorkflow(t.Context(), workflow)
+	assert.NoError(t, err)
+
+	// User with write permission should be able to access workflows
+	session1 := loginUser(t, user.Name)
+	req := NewRequest(t, "GET", fmt.Sprintf("/%s/%s/projects/%d/workflows", user.Name, repo.Name, project.ID))
+	session1.MakeRequest(t, req, http.StatusOK)
+
+	// User without write permission should not be able to modify workflows
+	session2 := loginUser(t, user2.Name)
+	req = NewRequest(t, "POST",
+		fmt.Sprintf("/%s/%s/projects/%d/workflows/%d/delete?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session2)))
+	session2.MakeRequest(t, req, http.StatusNotFound) // we use 404 to avoid leaking existence
+}
+
+func TestProjectWorkflowValidation(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	// Create a project
+	project := &project_model.Project{
+		Title:        "Test Project for Workflow Validation",
+		RepoID:       repo.ID,
+		Type:         project_model.TypeRepository,
+		TemplateType: project_model.TemplateTypeNone,
+	}
+	err := project_model.NewProject(t.Context(), project)
+	assert.NoError(t, err)
+
+	session := loginUser(t, user.Name)
+
+	// Test 1: Try to create a workflow without any actions (should fail)
+	t.Run("Create workflow without actions should fail", func(t *testing.T) {
+		workflowData := map[string]any{
+			"event_id": string(project_model.WorkflowEventItemOpened),
+			"filters": map[string]any{
+				string(project_model.WorkflowFilterTypeIssueType): "issue",
+			},
+			"actions": map[string]any{
+				// No actions provided - this should trigger validation error
+			},
+		}
+
+		body, err := json.Marshal(workflowData)
+		assert.NoError(t, err)
+
+		req := NewRequestWithBody(t, "POST",
+			fmt.Sprintf("/%s/%s/projects/%d/workflows/item_opened?_csrf=%s", user.Name, repo.Name, project.ID, GetUserCSRFToken(t, session)),
+			strings.NewReader(string(body)))
+		req.Header.Set("Content-Type", "application/json")
+		resp := session.MakeRequest(t, req, http.StatusBadRequest)
+
+		// Parse response
+		var result map[string]any
+		err = json.Unmarshal(resp.Body.Bytes(), &result)
+		assert.NoError(t, err)
+		assert.Equal(t, "NoActions", result["error"], "Error should be NoActions")
+		assert.NotEmpty(t, result["message"], "Error message should be provided")
+	})
+
+	// Test 2: Try to update a workflow to have no actions (should fail)
+	t.Run("Update workflow to remove all actions should fail", func(t *testing.T) {
+		// First create a valid workflow
+		column := &project_model.Column{
+			Title:     "Test Column",
+			ProjectID: project.ID,
+		}
+		err := project_model.NewColumn(t.Context(), column)
+		assert.NoError(t, err)
+
+		workflow := &project_model.Workflow{
+			ProjectID:     project.ID,
+			WorkflowEvent: project_model.WorkflowEventItemOpened,
+			WorkflowFilters: []project_model.WorkflowFilter{
+				{
+					Type:  project_model.WorkflowFilterTypeIssueType,
+					Value: "issue",
+				},
+			},
+			WorkflowActions: []project_model.WorkflowAction{
+				{
+					Type:  project_model.WorkflowActionTypeColumn,
+					Value: strconv.FormatInt(column.ID, 10),
+				},
+			},
+			Enabled: true,
+		}
+		err = project_model.CreateWorkflow(t.Context(), workflow)
+		assert.NoError(t, err)
+
+		// Try to update it to have no actions
+		updateData := map[string]any{
+			"event_id": strconv.FormatInt(workflow.ID, 10),
+			"filters": map[string]any{
+				string(project_model.WorkflowFilterTypeIssueType): "issue",
+			},
+			"actions": map[string]any{
+				// No actions - should fail
+			},
+		}
+
+		body, err := json.Marshal(updateData)
+		assert.NoError(t, err)
+
+		req := NewRequestWithBody(t, "POST",
+			fmt.Sprintf("/%s/%s/projects/%d/workflows/%d?_csrf=%s", user.Name, repo.Name, project.ID, workflow.ID, GetUserCSRFToken(t, session)),
+			strings.NewReader(string(body)))
+		req.Header.Set("Content-Type", "application/json")
+		resp := session.MakeRequest(t, req, http.StatusBadRequest)
+
+		// Parse response
+		var result map[string]any
+		err = json.Unmarshal(resp.Body.Bytes(), &result)
+		assert.NoError(t, err)
+		assert.Equal(t, "NoActions", result["error"], "Error should be NoActions")
+		assert.NotEmpty(t, result["message"], "Error message should be provided")
+
+		// Verify the workflow was not changed
+		unchangedWorkflow, err := project_model.GetWorkflowByID(t.Context(), workflow.ID)
+		assert.NoError(t, err)
+		assert.Len(t, unchangedWorkflow.WorkflowActions, 1, "Workflow should still have the original action")
+	})
+}

tests/integration/repo_activity_test.go

@@ -39,9 +39,18 @@ func TestRepoActivity(t *testing.T) {
 		testPullCreate(t, session, "user1", "repo1", false, "master", "feat/much_better_readme", "This is a pull title")
 
 		// Create issues (3 new issues)
-		testNewIssue(t, session, "user2", "repo1", "Issue 1", "Description 1")
-		testNewIssue(t, session, "user2", "repo1", "Issue 2", "Description 2")
-		testNewIssue(t, session, "user2", "repo1", "Issue 3", "Description 3")
+		testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+			Title:   "Issue 1",
+			Content: "Description 1",
+		})
+		testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+			Title:   "Issue 2",
+			Content: "Description 2",
+		})
+		testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+			Title:   "Issue 3",
+			Content: "Description 3",
+		})
 
 		// Create releases (1 new release)
 		createNewRelease(t, session, "/user2/repo1", "v1.0.0", "v1.0.0", false, false)

tests/integration/repo_webhook_test.go

@@ -255,7 +255,10 @@ func Test_WebhookIssueComment(t *testing.T) {
 
 		t.Run("create comment", func(t *testing.T) {
 			// 2. trigger the webhook
-			issueURL := testNewIssue(t, session, "user2", "repo1", "Title2", "Description2")
+			issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+				Title:   "Title2",
+				Content: "Description2",
+			})
 			testIssueAddComment(t, session, issueURL, "issue title2 comment1", "")
 
 			// 3. validate the webhook is triggered
@@ -274,7 +277,10 @@ func Test_WebhookIssueComment(t *testing.T) {
 			triggeredEvent = ""
 
 			// 2. trigger the webhook
-			issueURL := testNewIssue(t, session, "user2", "repo1", "Title3", "Description3")
+			issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+				Title:   "Title3",
+				Content: "Description3",
+			})
 			commentID := testIssueAddComment(t, session, issueURL, "issue title3 comment1", "")
 			modifiedContent := "issue title2 comment1 - modified"
 			req := NewRequestWithValues(t, "POST", fmt.Sprintf("/%s/%s/comments/%d", "user2", "repo1", commentID), map[string]string{
@@ -300,7 +306,10 @@ func Test_WebhookIssueComment(t *testing.T) {
 			commentContent := "issue title3 comment1"
 
 			// 2. trigger the webhook
-			issueURL := testNewIssue(t, session, "user2", "repo1", "Title3", "Description3")
+			issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+				Title:   "Title3",
+				Content: "Description3",
+			})
 			commentID := testIssueAddComment(t, session, issueURL, commentContent, "")
 
 			payloads = make([]api.IssueCommentPayload, 0, 2)
@@ -511,7 +520,10 @@ func Test_WebhookIssue(t *testing.T) {
 		testAPICreateWebhookForRepo(t, session, "user2", "repo1", provider.URL(), "issues")
 
 		// 2. trigger the webhook
-		testNewIssue(t, session, "user2", "repo1", "Title1", "Description1")
+		testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+			Title:   "Title1",
+			Content: "Description1",
+		})
 
 		// 3. validate the webhook is triggered
 		assert.Equal(t, "issues", triggeredEvent)
@@ -543,7 +555,10 @@ func Test_WebhookIssueDelete(t *testing.T) {
 		// 1. create a new webhook with special webhook for repo1
 		session := loginUser(t, "user2")
 		testAPICreateWebhookForRepo(t, session, "user2", "repo1", provider.URL(), "issues")
-		issueURL := testNewIssue(t, session, "user2", "repo1", "Title1", "Description1")
+		issueURL := testNewIssue(t, session, "user2", "repo1", newIssueOptions{
+			Title:   "Title1",
+			Content: "Description1",
+		})
 
 		// 2. trigger the webhook
 		testIssueDelete(t, session, issueURL)

web_src/js/components/projects/WorkflowStore.ts

@@ -0,0 +1,358 @@
+import {reactive} from 'vue';
+import {GET, POST} from '../../modules/fetch.ts';
+import {showErrorToast} from '../../modules/toast.ts';
+
+type WorkflowFilters = {
+  issue_type: string;
+  source_column: string;
+  target_column: string;
+  labels: string[];
+};
+
+type WorkflowIssueStateAction = '' | 'close' | 'reopen';
+
+type WorkflowActions = {
+  column: string;
+  add_labels: string[];
+  remove_labels: string[];
+  issue_state: WorkflowIssueStateAction;
+};
+
+type WorkflowDraftState = {
+  filters: WorkflowFilters;
+  actions: WorkflowActions;
+};
+
+const createDefaultFilters = (): WorkflowFilters => ({issue_type: '', source_column: '', target_column: '', labels: []});
+const createDefaultActions = (): WorkflowActions => ({column: '', add_labels: [], remove_labels: [], issue_state: ''});
+
+function convertFilters(workflow: any): WorkflowFilters {
+  const filters = createDefaultFilters();
+  if (workflow?.filters && Array.isArray(workflow.filters)) {
+    for (const filter of workflow.filters) {
+      if (filter.type === 'issue_type') {
+        filters.issue_type = filter.value;
+      } else if (filter.type === 'source_column') {
+        filters.source_column = filter.value;
+      } else if (filter.type === 'target_column') {
+        filters.target_column = filter.value;
+      } else if (filter.type === 'labels') {
+        filters.labels.push(filter.value);
+      }
+    }
+  }
+  return filters;
+}
+
+function convertActions(workflow: any): WorkflowActions {
+  const actions = createDefaultActions();
+
+  if (workflow?.actions && Array.isArray(workflow.actions)) {
+    for (const action of workflow.actions) {
+      if (action.type === 'column') {
+        // Backend returns string, keep as string to match column.id type
+        actions.column = action.value;
+      } else if (action.type === 'add_labels') {
+        // Backend returns string, keep as string to match label.id type
+        actions.add_labels.push(action.value);
+      } else if (action.type === 'remove_labels') {
+        // Backend returns string, keep as string to match label.id type
+        actions.remove_labels.push(action.value);
+      } else if (action.type === 'issue_state') {
+        actions.issue_state = action.value as WorkflowIssueStateAction;
+      }
+    }
+  }
+  return actions;
+}
+
+const cloneFilters = (filters: WorkflowFilters): WorkflowFilters => ({
+  issue_type: filters.issue_type,
+  source_column: filters.source_column,
+  target_column: filters.target_column,
+  labels: Array.from(filters.labels),
+});
+
+const cloneActions = (actions: WorkflowActions): WorkflowActions => ({
+  column: actions.column,
+  add_labels: Array.from(actions.add_labels),
+  remove_labels: Array.from(actions.remove_labels),
+  issue_state: actions.issue_state,
+});
+
+export function createWorkflowStore(props: any) {
+  const store = reactive({
+    workflowEvents: [],
+    selectedItem: props.eventID,
+    selectedWorkflow: null,
+    projectColumns: [],
+    projectLabels: [], // Add labels data
+    saving: false,
+    loading: false, // Add loading state to prevent rapid clicks
+    showCreateDialog: false, // For create workflow dialog
+    selectedEventType: null, // For workflow creation
+
+    workflowFilters: createDefaultFilters(),
+    workflowActions: createDefaultActions(),
+
+    workflowDrafts: {} as Record<string, WorkflowDraftState>,
+
+    getDraft(eventId: string): WorkflowDraftState | undefined {
+      return store.workflowDrafts[eventId];
+    },
+
+    updateDraft(eventId: string, filters: WorkflowFilters, actions: WorkflowActions) {
+      store.workflowDrafts[eventId] = {
+        filters: cloneFilters(filters),
+        actions: cloneActions(actions),
+      };
+    },
+
+    clearDraft(eventId: string) {
+      delete store.workflowDrafts[eventId];
+    },
+
+    async loadEvents() {
+      const response = await GET(`${props.projectLink}/workflows/events`);
+      store.workflowEvents = await response.json();
+      return store.workflowEvents;
+    },
+
+    async loadProjectColumns() {
+      try {
+        const response = await GET(`${props.projectLink}/workflows/columns`);
+        store.projectColumns = await response.json();
+      } catch (error) {
+        console.error('Failed to load project columns:', error);
+        store.projectColumns = [];
+      }
+    },
+
+    async loadWorkflowData(eventId: string) {
+      store.loading = true;
+      try {
+        // Load project columns and labels for the dropdowns
+        await store.loadProjectColumns();
+        await store.loadProjectLabels();
+
+        const draft = store.getDraft(eventId);
+        if (draft) {
+          store.workflowFilters = cloneFilters(draft.filters);
+          store.workflowActions = cloneActions(draft.actions);
+          return;
+        }
+
+        // Find the workflow from existing workflowEvents
+        const workflow = store.workflowEvents.find((e) => e.event_id === eventId);
+
+        store.workflowFilters = convertFilters(workflow);
+        store.workflowActions = convertActions(workflow);
+        store.updateDraft(eventId, store.workflowFilters, store.workflowActions);
+      } finally {
+        store.loading = false;
+      }
+    },
+
+    async loadProjectLabels() {
+      try {
+        const response = await GET(`${props.projectLink}/workflows/labels`);
+        store.projectLabels = await response.json();
+      } catch (error) {
+        console.error('Failed to load project labels:', error);
+        store.projectLabels = [];
+      }
+    },
+
+    resetWorkflowData() {
+      store.workflowFilters = createDefaultFilters();
+      store.workflowActions = createDefaultActions();
+
+      const currentEventId = store.selectedWorkflow?.event_id;
+      if (currentEventId) {
+        store.updateDraft(currentEventId, store.workflowFilters, store.workflowActions);
+      }
+    },
+
+    async saveWorkflow() {
+      if (!store.selectedWorkflow) return;
+
+      // Validate: at least one action must be configured
+      const hasAtLeastOneAction = Boolean(
+        store.workflowActions.column ||
+        store.workflowActions.add_labels.length > 0 ||
+        store.workflowActions.remove_labels.length > 0 ||
+        store.workflowActions.issue_state,
+      );
+
+      if (!hasAtLeastOneAction) {
+        showErrorToast(props.locale.atLeastOneActionRequired || 'At least one action must be configured');
+        return;
+      }
+
+      store.saving = true;
+      try {
+        // For new workflows, use the base event type
+        const eventId = store.selectedWorkflow.event_id;
+
+        // Convert frontend data format to backend JSON format
+        const postData = {
+          event_id: eventId,
+          filters: store.workflowFilters,
+          actions: store.workflowActions,
+        };
+
+        const response = await POST(`${props.projectLink}/workflows/${eventId}`, {
+          data: postData,
+          headers: {
+            'Content-Type': 'application/json',
+          },
+        });
+
+        if (!response.ok) {
+          let errorMessage = `${props.locale.failedToSaveWorkflow}: ${response.status} ${response.statusText}`;
+          try {
+            const errorData = await response.json();
+            if (errorData.message) {
+              errorMessage = errorData.message;
+            } else if (errorData.error === 'NoActions') {
+              errorMessage = props.locale.atLeastOneActionRequired || 'At least one action must be configured';
+            }
+          } catch {
+            const errorText = await response.text();
+            console.error('Response error:', errorText);
+            errorMessage += `\n${errorText}`;
+          }
+          showErrorToast(errorMessage);
+          return;
+        }
+
+        const result = await response.json();
+        if (result.success && result.workflow) {
+          // Always reload the events list to get the updated structure
+          // This ensures we have both the base event and the new filtered event
+          const eventKey = typeof store.selectedWorkflow.event_id === 'string' ? store.selectedWorkflow.event_id : '';
+          const wasNewWorkflow = store.selectedWorkflow.id === 0 ||
+                                 eventKey.startsWith('new-') ||
+                                 eventKey.startsWith('clone-');
+
+          if (wasNewWorkflow) {
+            store.clearDraft(store.selectedWorkflow.workflow_event);
+          }
+
+          // Reload events from server to get the correct event structure
+          await store.loadEvents();
+
+          // Find the reloaded workflow which has complete data including capabilities
+          const reloadedWorkflow = store.workflowEvents.find((w) => w.event_id === result.workflow.event_id);
+
+          if (reloadedWorkflow) {
+            // Use the reloaded workflow as it has all the necessary fields
+            store.selectedWorkflow = reloadedWorkflow;
+            store.selectedItem = reloadedWorkflow.event_id;
+          } else {
+            // Fallback: use the result from backend (shouldn't normally happen)
+            store.selectedWorkflow = result.workflow;
+            store.selectedItem = result.workflow.event_id;
+          }
+
+          store.workflowFilters = convertFilters(store.selectedWorkflow);
+          store.workflowActions = convertActions(store.selectedWorkflow);
+          if (store.selectedWorkflow?.event_id) {
+            store.updateDraft(store.selectedWorkflow.event_id, store.workflowFilters, store.workflowActions);
+          }
+
+          // Update URL to use the new workflow ID
+          if (wasNewWorkflow) {
+            const newUrl = `${props.projectLink}/workflows/${store.selectedWorkflow.event_id}`;
+            window.history.replaceState({eventId: store.selectedWorkflow.event_id}, '', newUrl);
+          }
+        } else {
+          console.error('Unexpected response format:', result);
+          showErrorToast(`${props.locale.failedToSaveWorkflow}: Unexpected response format`);
+        }
+      } catch (error) {
+        console.error('Failed to save workflow:', error);
+        showErrorToast(`${props.locale.failedToSaveWorkflow}: ${error.message}`);
+      } finally {
+        store.saving = false;
+      }
+    },
+
+    async saveWorkflowStatus() {
+      if (!store.selectedWorkflow || store.selectedWorkflow.id === 0) return;
+
+      try {
+        const formData = new FormData();
+        formData.append('enabled', store.selectedWorkflow.enabled.toString());
+
+        // Use workflow ID for status update
+        const workflowId = store.selectedWorkflow.id;
+        const response = await POST(`${props.projectLink}/workflows/${workflowId}/status`, {
+          data: formData,
+        });
+
+        if (!response.ok) {
+          const errorText = await response.text();
+          console.error('Failed to update workflow status:', errorText);
+          showErrorToast(`${props.locale.failedToUpdateWorkflowStatus}: ${response.status} ${response.statusText}`);
+          // Revert the status change on error
+          store.selectedWorkflow.enabled = !store.selectedWorkflow.enabled;
+          return;
+        }
+
+        const result = await response.json();
+        if (result.success) {
+          // Update workflow in the list
+          const existingIndex = store.workflowEvents.findIndex((e) => e.event_id === store.selectedWorkflow.event_id);
+          if (existingIndex >= 0) {
+            store.workflowEvents[existingIndex].enabled = store.selectedWorkflow.enabled;
+          }
+        } else {
+          // Revert the status change on failure
+          store.selectedWorkflow.enabled = !store.selectedWorkflow.enabled;
+          showErrorToast(`${props.locale.failedToUpdateWorkflowStatus}: Unexpected error`);
+        }
+      } catch (error) {
+        console.error('Failed to update workflow status:', error);
+        // Revert the status change on error
+        store.selectedWorkflow.enabled = !store.selectedWorkflow.enabled;
+        showErrorToast(`${props.locale.failedToUpdateWorkflowStatus}: ${error.message}`);
+      }
+    },
+
+    async deleteWorkflow() {
+      if (!store.selectedWorkflow || store.selectedWorkflow.id === 0) return;
+
+      try {
+        // Use workflow ID for deletion
+        const workflowId = store.selectedWorkflow.id;
+        const response = await POST(`${props.projectLink}/workflows/${workflowId}/delete`, {
+          data: new FormData(),
+        });
+
+        if (!response.ok) {
+          const errorText = await response.text();
+          console.error('Failed to delete workflow:', errorText);
+          showErrorToast(`${props.locale.failedToDeleteWorkflow}: ${response.status} ${response.statusText}`);
+          return;
+        }
+
+        const result = await response.json();
+        if (result.success) {
+          // Remove workflow from the list
+          const existingIndex = store.workflowEvents.findIndex((e) => e.event_id === store.selectedWorkflow.event_id);
+          if (existingIndex >= 0) {
+            store.workflowEvents.splice(existingIndex, 1);
+          }
+        } else {
+          showErrorToast(`${props.locale.failedToDeleteWorkflow}: Unexpected error`);
+        }
+      } catch (error) {
+        console.error('Error deleting workflow:', error);
+        showErrorToast(`${props.locale.failedToDeleteWorkflow}: ${error.message}`);
+      }
+    },
+
+  });
+  return store;
+}

web_src/js/features/projects/workflow.ts

@@ -0,0 +1,60 @@
+import {createApp} from 'vue';
+import ProjectWorkflow from '../../components/projects/ProjectWorkflow.vue';
+
+export async function initProjectWorkflow() {
+  const workflowDiv = document.querySelector('#project-workflows');
+  if (!workflowDiv) return;
+
+  try {
+    const locale = {
+      defaultWorkflows: workflowDiv.getAttribute('data-locale-default-workflows'),
+      moveToColumn: workflowDiv.getAttribute('data-locale-move-to-column'),
+      viewWorkflowConfiguration: workflowDiv.getAttribute('data-locale-view-workflow-configuration'),
+      configureWorkflow: workflowDiv.getAttribute('data-locale-configure-workflow'),
+      when: workflowDiv.getAttribute('data-locale-when'),
+      runWhen: workflowDiv.getAttribute('data-locale-run-when'),
+      filters: workflowDiv.getAttribute('data-locale-filters'),
+      applyTo: workflowDiv.getAttribute('data-locale-apply-to'),
+      whenMovedFromColumn: workflowDiv.getAttribute('data-locale-when-moved-from-column'),
+      whenMovedToColumn: workflowDiv.getAttribute('data-locale-when-moved-to-column'),
+      onlyIfHasLabels: workflowDiv.getAttribute('data-locale-only-if-has-labels'),
+      actions: workflowDiv.getAttribute('data-locale-actions'),
+      addLabels: workflowDiv.getAttribute('data-locale-add-labels'),
+      removeLabels: workflowDiv.getAttribute('data-locale-remove-labels'),
+      anyLabel: workflowDiv.getAttribute('data-locale-any-label'),
+      anyColumn: workflowDiv.getAttribute('data-locale-any-column'),
+      issueState: workflowDiv.getAttribute('data-locale-issue-state'),
+      none: workflowDiv.getAttribute('data-locale-none'),
+      noChange: workflowDiv.getAttribute('data-locale-no-change'),
+      edit: workflowDiv.getAttribute('data-locale-edit'),
+      delete: workflowDiv.getAttribute('data-locale-delete'),
+      save: workflowDiv.getAttribute('data-locale-save'),
+      clone: workflowDiv.getAttribute('data-locale-clone'),
+      cancel: workflowDiv.getAttribute('data-locale-cancel'),
+      disable: workflowDiv.getAttribute('data-locale-disable'),
+      disabled: workflowDiv.getAttribute('data-locale-disabled'),
+      enabled: workflowDiv.getAttribute('data-locale-enabled'),
+      enable: workflowDiv.getAttribute('data-locale-enable'),
+      issuesAndPullRequests: workflowDiv.getAttribute('data-locale-issues-and-pull-requests'),
+      issuesOnly: workflowDiv.getAttribute('data-locale-issues-only'),
+      pullRequestsOnly: workflowDiv.getAttribute('data-locale-pull-requests-only'),
+      selectColumn: workflowDiv.getAttribute('data-locale-select-column'),
+      closeIssue: workflowDiv.getAttribute('data-locale-close-issue'),
+      reopenIssue: workflowDiv.getAttribute('data-locale-reopen-issue'),
+      saveWorkflowFailed: workflowDiv.getAttribute('data-locale-save-workflow-failed'),
+      updateWorkflowFailed: workflowDiv.getAttribute('data-locale-update-workflow-failed'),
+      deleteWorkflowFailed: workflowDiv.getAttribute('data-locale-delete-workflow-failed'),
+      atLeastOneActionRequired: workflowDiv.getAttribute('data-locale-at-least-one-action-required'),
+    };
+
+    const View = createApp(ProjectWorkflow, {
+      projectLink: workflowDiv.getAttribute('data-project-link'),
+      eventID: workflowDiv.getAttribute('data-event-id'),
+      locale,
+    });
+    View.mount(workflowDiv);
+  } catch (err) {
+    console.error('Project Workflow failed to load', err);
+    workflowDiv.textContent = 'Project Workflow failed to load';
+  }
+}

web_src/js/index-domready.ts

@@ -64,6 +64,7 @@ import {initGlobalButtonClickOnEnter, initGlobalButtons, initGlobalDeleteButton}
 import {initGlobalComboMarkdownEditor, initGlobalEnterQuickSubmit, initGlobalFormDirtyLeaveConfirm} from './features/common-form.ts';
 import {callInitFunctions} from './modules/init.ts';
 import {initRepoViewFileTree} from './features/repo-view-file-tree.ts';
+import {initProjectWorkflow} from './features/projects/workflow.ts';
 
 const initStartTime = performance.now();
 const initPerformanceTracer = callInitFunctions([
@@ -159,6 +160,8 @@ const initPerformanceTracer = callInitFunctions([
   initOAuth2SettingsDisableCheckbox,
 
   initRepoFileView,
+
+  initProjectWorkflow,
 ]);
 
 // it must be the last one, then the "querySelectorAll" only needs to be executed once for global init functions.