package task

import (
	"encoding/json"
	"errors"
	"fmt"
	"mats/conf"
	"mats/db"
	"mats/log"
	"runtime"
	"sync"
	"time"

	"github.com/RichardKnop/machinery/v2"

	"github.com/RichardKnop/machinery/v2/config"
	"github.com/RichardKnop/machinery/v2/tasks"

	redisbackend "github.com/RichardKnop/machinery/v2/backends/redis"
	amqpbroker "github.com/RichardKnop/machinery/v2/brokers/amqp"
	eagerlock "github.com/RichardKnop/machinery/v2/locks/eager"
)

func StartServer(AppConfig *conf.TaskConfig) (*machinery.Server, error) {
	cnf := &config.Config{
		Broker:       AppConfig.Broker,
		DefaultQueue: AppConfig.DefaultQueue,
		// ResultBackend:   AppConfig.ResultBackend,
		ResultsExpireIn: int(AppConfig.ResultsExpireIn),
		AMQP: &config.AMQPConfig{
			Exchange:      AppConfig.AmqpExchange,
			ExchangeType:  AppConfig.AmqpExchangeType,
			BindingKey:    AppConfig.AmqpBindingKey,
			PrefetchCount: int(AppConfig.AmqpPrefetchCount),
		},
		Redis: &config.RedisConfig{
			MaxIdle:                3,
			IdleTimeout:            240,
			ReadTimeout:            15,
			WriteTimeout:           15,
			ConnectTimeout:         15,
			NormalTasksPollPeriod:  1000,
			DelayedTasksPollPeriod: 500,
		},
	}
	// Create server instance
	broker := amqpbroker.New(cnf)
	backend := redisbackend.NewGR(cnf, []string{conf.AppConfig.Redis.Addr}, conf.AppConfig.Redis.Db)
	lock := eagerlock.New()
	server := machinery.NewServer(cnf, broker, backend, lock)

	return server, nil
}

func RunRenderTask(taskId string, db *db.MongoDB) error {

	defer func() {
		if r := recover(); r != nil {
			fmt.Println("RunRenderTask success.")
			fmt.Println(r)
			buf := make([]byte, 1<<16)
			runtime.Stack(buf, true)
			fmt.Println("buf", string(buf))
			log.Error(string(buf))
		}
	}()
	return nil
	// renderServer := GetOrCreateServer(&conf.AppConfig.TaskRender)
	// if renderServer == nil {
	// 	return errors.New("GetOrCreateServer null")
	// }
	// renderTask := &tasks.Signature{
	// 	Name: "render",
	// 	Args: []tasks.Arg{
	// 		{
	// 			Name:  "taskId",
	// 			Type:  "string",
	// 			Value: taskId,
	// 		},
	// 	},
	// }

	// asyncResult, err := renderServer.SendTaskWithContext(context.Background(), renderTask)
	// go func() {
	// 	results, err := asyncResult.Get(time.Duration(time.Microsecond * 200))
	// 	update := bson.M{}
	// 	if err != nil {
	// 		log.Errorf("Getting task result failed with error: %s", err.Error())
	// 		update["runState"] = model.TaskRunState_Fail
	// 		update["runPercent"] = 0
	// 	} else {

	// 		result := tasks.HumanReadableResults(results)
	// 		log.Infof("render result = %v\n", result)
	// 		update["runState"] = model.TaskRunState_Succ
	// 		update["runPercent"] = 100
	// 		contentLen := len("result:")
	// 		renderRet := result[contentLen:]

	// 		runResult := &model.TaskRunResult{}
	// 		err = json.Unmarshal([]byte(renderRet), runResult)
	// 		if err == nil {
	// 			update["runResult"] = runResult
	// 		}
	// 	}
	// 	_, err = repo.RepoUpdateSetDocProps(&repo.RepoSession{Ctx: context.Background(), Client: db}, repo.CollectionTask, taskId, bson.M{"$set": update})
	// 	if err != nil {
	// 		log.Errorf("render task update error")
	// 	}
	// }()
	// return err
}

// func RunConvmeshTask(meshUrl string, createThumbnail bool) (*model.ConvMeshRunResult, error) {

// 	//先转换fbx
// 	file, err := RunFbxConverterTask(meshUrl)
// 	if err != nil {
// 		return nil, err
// 	}

// 	taskConf := &tasks.Signature{
// 		Name: "convmesh",
// 		Args: []tasks.Arg{
// 			{
// 				Name:  "meshUrl",
// 				Type:  "string",
// 				Value: meshUrl,
// 			},
// 			{
// 				Name:  "thumbnail",
// 				Type:  "bool",
// 				Value: createThumbnail,
// 			},
// 		},
// 	}
// 	runResult := &model.ConvMeshRunResult{}
// 	err = RunTask(&conf.AppConfig.TaskConvMesh, taskConf, runResult)
// 	if err != nil {
// 		return nil, err
// 	}
// 	runResult.File = file

// 	return runResult, nil
// }

// func RunFbxConverterTask(meshUrl string) (*model.OssType, error) {

// 	renderTask := &tasks.Signature{
// 		Name: "fbxConverter",
// 		Args: []tasks.Arg{
// 			{
// 				Name:  "meshUrl",
// 				Type:  "string",
// 				Value: meshUrl,
// 			},
// 		},
// 	}
// 	runResult := &model.OssType{}

// 	err := RunTask(&conf.AppConfig.TaskFbxConverter, renderTask, runResult)
// 	if err != nil {
// 		return nil, err
// 	}
// 	return runResult, nil
// }

var taskServers map[string]*machinery.Server = map[string]*machinery.Server{}

var lock sync.Mutex

func GetOrCreateServer(config *conf.TaskConfig) *machinery.Server {
	lock.Lock()
	defer lock.Unlock()

	server := taskServers[config.Name]
	if server == nil {
		taskServer, err := StartServer(config)
		if err != nil {
			fmt.Sprintln("GetOrCreateServer failed")
			return nil
		}
		server = taskServer
		taskServers[config.Name] = server
	}
	return server
}

func RunTask(config *conf.TaskConfig, task *tasks.Signature, runResult interface{}) error {

	server := GetOrCreateServer(config)
	if server == nil {
		return errors.New("GetOrCreateServer null")
	}

	defer func() {
		if r := recover(); r != nil {
			fmt.Println(r)
			buf := make([]byte, 1<<16)
			runtime.Stack(buf, true)
			fmt.Println("buf", string(buf))
			log.Error(string(buf))
		}
	}()

	asyncResult, err := server.SendTask(task)
	if err != nil {
		return err
	}
	if runResult == nil {
		return nil
	}

	results, err := asyncResult.Get(time.Duration(time.Microsecond * 200))
	if err != nil {
		log.Errorf("Getting task result failed with error: %s", err.Error())
		fmt.Println(err)
		return err
	}

	msg := tasks.HumanReadableResults(results)
	log.Infof("task result = %v\n", msg)
	contentLen := len("result:")
	renderRet := msg[contentLen:]
	err = json.Unmarshal([]byte(renderRet), runResult)
	if err != nil {
		return errors.New("转换结果解析失败!")
	}

	return nil
}

// func RunShadowTask(meshId string) (*model.OssType, error) {
// 	taskReq := &tasks.Signature{
// 		Name: "shadow",
// 		Args: []tasks.Arg{
// 			{
// 				Name:  "from",
// 				Type:  "string",
// 				Value: "db",
// 			},
// 			{
// 				Name:  "meshId",
// 				Type:  "string",
// 				Value: meshId,
// 			},
// 		},
// 	}
// 	runResult := &model.OssType{}
// 	err := RunTask(&conf.AppConfig.TaskShadow, taskReq, runResult)

// 	return runResult, err
// }

func RunMeshPostProcessTask(meshId string, collection string, itemId string, itemCollection string) error {

	go func() {
		RunMeshShadowTask(meshId, collection)
	}()

	taskReq := &tasks.Signature{
		Name: "uploadmesh",
		Args: []tasks.Arg{
			{
				Name:  "meshId",
				Type:  "string",
				Value: meshId,
			},
			{
				Name:  "collection",
				Type:  "string",
				Value: collection,
			},
			{
				Name:  "itemId",
				Type:  "string",
				Value: itemId,
			},
			{
				Name:  "itemCollection",
				Type:  "string",
				Value: itemCollection,
			},
		},
	}
	fmt.Sprintln(taskReq)
	// runResult := ""
	// return RunTask(&conf.AppConfig.TaskUploadProcess, taskReq, runResult)
	return nil
}

func RunMeshShadowTask(meshId string, collection string) error {
	taskReq := &tasks.Signature{
		Name: "shadow",
		Args: []tasks.Arg{
			{
				Name:  "meshId",
				Type:  "string",
				Value: meshId,
			},
			{
				Name:  "collection",
				Type:  "string",
				Value: collection,
			},
		},
	}
	// runResult := &model.OssType{}
	// return RunTask(&conf.AppConfig.TaskShadow, taskReq, runResult)
	fmt.Sprintln(taskReq)
	return nil
}