// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.

package accesslog

import (
	"context"
	"net"
	"os"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	"google.golang.org/grpc"
	"google.golang.org/grpc/metadata"
	"google.golang.org/grpc/peer"

	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
	"github.com/milvus-io/milvus/pkg/util/paramtable"
)

func TestAccessLogger_NotEnable(t *testing.T) {
	var Params paramtable.ComponentParam

	Params.Init(paramtable.NewBaseTable(paramtable.SkipRemote(true)))
	Params.Save(Params.ProxyCfg.AccessLog.Enable.Key, "false")

	InitAccessLogger(&Params.ProxyCfg.AccessLog, &Params.MinioCfg)

	ctx := peer.NewContext(
		context.Background(),
		&peer.Peer{
			Addr: &net.IPAddr{
				IP:   net.IPv4(0, 0, 0, 0),
				Zone: "test",
			},
		})
	ctx = metadata.AppendToOutgoingContext(ctx, clientRequestIDKey, "test")

	resp := &milvuspb.BoolResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_UnexpectedError,
			Reason:    "",
		},
		Value: false,
	}

	rpcInfo := &grpc.UnaryServerInfo{Server: nil, FullMethod: "testMethod"}
	ok := PrintAccessInfo(ctx, resp, nil, rpcInfo, 0)
	assert.False(t, ok)
}

func TestAccessLogger_Basic(t *testing.T) {
	var Params paramtable.ComponentParam

	Params.Init(paramtable.NewBaseTable(paramtable.SkipRemote(true)))
	testPath := "/tmp/accesstest"
	Params.Save(Params.ProxyCfg.AccessLog.Enable.Key, "true")
	Params.Save(Params.ProxyCfg.AccessLog.LocalPath.Key, testPath)
	defer os.RemoveAll(testPath)

	InitAccessLogger(&Params.ProxyCfg.AccessLog, &Params.MinioCfg)

	ctx := peer.NewContext(
		context.Background(),
		&peer.Peer{
			Addr: &net.IPAddr{
				IP:   net.IPv4(0, 0, 0, 0),
				Zone: "test",
			},
		})
	ctx = metadata.AppendToOutgoingContext(ctx, clientRequestIDKey, "test")

	resp := &milvuspb.BoolResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_UnexpectedError,
			Reason:    "",
		},
		Value: false,
	}

	rpcInfo := &grpc.UnaryServerInfo{Server: nil, FullMethod: "testMethod"}
	ok := PrintAccessInfo(ctx, resp, nil, rpcInfo, 0)
	assert.True(t, ok)
}

func TestAccessLogger_Stdout(t *testing.T) {
	var Params paramtable.ComponentParam

	Params.Init(paramtable.NewBaseTable(paramtable.SkipRemote(true)))
	Params.Save(Params.ProxyCfg.AccessLog.Enable.Key, "true")
	Params.Save(Params.ProxyCfg.AccessLog.Filename.Key, "")

	InitAccessLogger(&Params.ProxyCfg.AccessLog, &Params.MinioCfg)

	ctx := peer.NewContext(
		context.Background(),
		&peer.Peer{
			Addr: &net.IPAddr{
				IP:   net.IPv4(0, 0, 0, 0),
				Zone: "test",
			},
		})
	ctx = metadata.AppendToOutgoingContext(ctx, clientRequestIDKey, "test")

	resp := &milvuspb.BoolResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_UnexpectedError,
			Reason:    "",
		},
		Value: false,
	}

	rpcInfo := &grpc.UnaryServerInfo{Server: nil, FullMethod: "testMethod"}
	ok := PrintAccessInfo(ctx, resp, nil, rpcInfo, 0)
	assert.True(t, ok)
}

func TestAccessLogger_WithMinio(t *testing.T) {
	var Params paramtable.ComponentParam

	Params.Init(paramtable.NewBaseTable(paramtable.SkipRemote(true)))
	testPath := "/tmp/accesstest"
	Params.Save(Params.ProxyCfg.AccessLog.Enable.Key, "true")
	Params.Save(Params.ProxyCfg.AccessLog.Filename.Key, "test_access")
	Params.Save(Params.ProxyCfg.AccessLog.LocalPath.Key, testPath)
	Params.Save(Params.ProxyCfg.AccessLog.MinioEnable.Key, "true")
	Params.Save(Params.ProxyCfg.AccessLog.RemotePath.Key, "access_log/")
	Params.Save(Params.ProxyCfg.AccessLog.MaxSize.Key, "1")
	defer os.RemoveAll(testPath)

	InitAccessLogger(&Params.ProxyCfg.AccessLog, &Params.MinioCfg)

	ctx := peer.NewContext(
		context.Background(),
		&peer.Peer{
			Addr: &net.IPAddr{
				IP:   net.IPv4(0, 0, 0, 0),
				Zone: "test",
			},
		})
	ctx = metadata.AppendToOutgoingContext(ctx, clientRequestIDKey, "test")

	resp := &milvuspb.BoolResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_UnexpectedError,
			Reason:    "",
		},
		Value: false,
	}

	rpcInfo := &grpc.UnaryServerInfo{Server: nil, FullMethod: "testMethod"}
	ok := PrintAccessInfo(ctx, resp, nil, rpcInfo, 0)
	assert.True(t, ok)

	W().Rotate()
	defer W().handler.Clean()

	time.Sleep(time.Duration(1) * time.Second)
	logfiles, err := W().handler.listAll()
	assert.NoError(t, err)
	assert.Equal(t, 1, len(logfiles))
}

func TestAccessLogger_Error(t *testing.T) {
	var Params paramtable.ComponentParam

	Params.Init(paramtable.NewBaseTable(paramtable.SkipRemote(true)))
	testPath := "/tmp/accesstest"
	Params.Save(Params.ProxyCfg.AccessLog.Enable.Key, "true")
	Params.Save(Params.ProxyCfg.AccessLog.Filename.Key, "test_access")
	Params.Save(Params.ProxyCfg.AccessLog.LocalPath.Key, testPath)
	defer os.RemoveAll(testPath)

	InitAccessLogger(&Params.ProxyCfg.AccessLog, &Params.MinioCfg)

	ctx := peer.NewContext(
		context.Background(),
		&peer.Peer{
			Addr: &net.IPAddr{
				IP:   net.IPv4(0, 0, 0, 0),
				Zone: "test",
			},
		})

	rpcInfo := &grpc.UnaryServerInfo{Server: nil, FullMethod: "testMethod"}
	ok := PrintAccessInfo(ctx, nil, nil, rpcInfo, 0)
	assert.False(t, ok)

	ctx = metadata.AppendToOutgoingContext(ctx, clientRequestIDKey, "test")
	ok = PrintAccessInfo(ctx, nil, nil, rpcInfo, 0)
	assert.False(t, ok)
}