/*
Copyright 2022 The Kubernetes Authors All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/*
Script expects the following env variables:
 - UPDATE_TARGET=<string>: optional - if unset/absent, default option is "fs"; valid options are:
   - "fs"  - update only local filesystem repo files [default]
   - "gh"  - update only remote GitHub repo files and create PR (if one does not exist already)
   - "all" - update local and remote repo files and create PR (if one does not exist already)
 - GITHUB_TOKEN=<string>: GitHub [personal] access token
   - note: GITHUB_TOKEN is required if UPDATE_TARGET is "gh" or "all"
*/

package main

import (
	"context"
	"strings"
	"time"

	"golang.org/x/mod/semver"
	"k8s.io/klog/v2"

	"k8s.io/minikube/hack/update"
)

const (
	// default context timeout
	cxTimeout = 300 * time.Second
)

var (
	schema = map[string]update.Item{
		"hack/jenkins/common.ps1": {
			Replace: map[string]string{
				`(?U)https://github.com/gotestyourself/gotestsum/releases/download/.*/gotestsum_.*_`: `https://github.com/gotestyourself/gotestsum/releases/download/v{{.StableVersion}}/gotestsum_{{.StableVersion}}_`,
			},
		},
		"hack/jenkins/installers/check_install_gotestsum.sh": {
			Replace: map[string]string{
				`gotest.tools/gotestsum@.*`: `gotest.tools/gotestsum@v{{.StableVersion}}`,
			},
		},
	}

	// PR data
	prBranchPrefix = "update-gotestsum-version_" // will be appended with first 7 characters of the PR commit SHA
	prTitle        = `update_gotestsum_version: {stable: "{{.StableVersion}}"}`
	prIssue        = 14224
)

// Data holds stable gotestsum version in semver format.
type Data struct {
	StableVersion string `json:"stableVersion"`
}

func main() {
	// set a context with defined timeout
	ctx, cancel := context.WithTimeout(context.Background(), cxTimeout)
	defer cancel()

	// get gotestsum stable version from https://github.com/gotestyourself/gotestsum
	stable, err := gotestsumVersion(ctx, "gotestyourself", "gotestsum")
	if err != nil || stable == "" {
		klog.Fatalf("Unable to get gotestsum stable version: %v", err)
	}
	data := Data{StableVersion: strings.TrimPrefix(stable, "v")}
	klog.Infof("gotestsum stable version: %s", data.StableVersion)

	update.Apply(ctx, schema, data, prBranchPrefix, prTitle, prIssue)
}

// gotestsumVersion returns gotestsum stable version in semver format.
func gotestsumVersion(ctx context.Context, owner, repo string) (stable string, err error) {
	// get gotestsum versions from GitHub Releases
	stable, _, _, err = update.GHReleases(ctx, owner, repo)
	if err != nil || !semver.IsValid(stable) {
		return "", err
	}
	return stable, nil
}