package action

import (
	"context"
	"joybuywork/internal/app"
	"joybuywork/internal/consts"
	"joybuywork/internal/plugins/printer"
	"joybuywork/internal/repository/dao"
	"joybuywork/internal/repository/model"
	"joybuywork/internal/utils"
	"joybuywork/internal/utils/merr"
	"fmt"
	"time"

	"github.com/rs/xid"
	rl "gits.branchcn.com/backend/microcode/plugins/derivative/lock"
)

const (
	loggerModPrint = "print"
	loggerModDb    = "db"
)

type OnceKey struct {
	exp     time.Duration //锁过期时间
	key     string        //锁key
	release bool          //是否直接完毕释放，（有一些可能需要一直锁着）
}

type SyncProgress struct {
	total int64        //任务总数
	sp    chan int64   //当前已处理的任务数
	tf    func() int64 //计算任务总数的方法
}

type IAction interface {
	Init(ctx context.Context)                              //基于ctx的初始化处理
	Exec() error                                           //执行方法
	OnceKey() *OnceKey                                     //锁，防止多服务器并发操作
	Desc() string                                          //描述，用来做关键字搜索
	Alert() bool                                           //推送消息
	LoggerMod() string                                     //日志模式
	DbExec() (total, successNum, failNum int64, err error) //Db执行方法
}

type Action struct {
	ctx context.Context
	be  *merr.BusinessError
}

func (a *Action) Exec() error {
	return nil
}

func (a *Action) DbExec() (total, successNum, failNum int64, err error) {
	return
}

func (a *Action) BE() *merr.BusinessError {
	return a.be
}

func (a *Action) Alert() bool {
	return false
}

func (a *Action) LoggerMod() string {
	return loggerModPrint
}

func (a *Action) Init(ctx context.Context) {
	a.ctx = ctx
	a.be = merr.NewBE(ctx)
}

type Job struct {
	R IAction
}

func (s *Job) Run() {
	taskId := xid.New().String()
	ctx, cancel := context.WithCancel(context.WithValue(context.Background(), consts.TraceIdKey, taskId))
	defer cancel()

	s.R.Init(ctx)

	switch s.R.LoggerMod() {
	case loggerModPrint:
		s.print(ctx, taskId)
	case loggerModDb:
		s.db(ctx)
	}
}

func (s *Job) db(ctx context.Context) {
	//防止多服务器同时执行，用redis上锁
	if s.R.OnceKey() != nil {
		lock := app.NewRedisLock(ctx, s.R.OnceKey().key, rl.SetExpire(s.R.OnceKey().exp))
		if !lock.SoftLock() {
			return
		}
		if s.R.OnceKey().release {
			defer lock.Release()
		}
	}

	//执行任务
	t := time.Now()
	total, successNum, failNum, err := s.R.DbExec()
	if total == 0 {
		return
	}

	dao.CronLog.WithContext(ctx).Create(&model.CronLog{
		ExecAt:     t.Unix(),
		Desc:       s.R.Desc(),
		Machine:    app.GetLocalIP(),
		Total:      total,
		SuccessNum: successNum,
		FailNum:    failNum,
		ExecStatus: utils.Ternary[int8](err == nil, 1, 2),
		ExecFail:   utils.Ternary[string](err == nil, "", fmt.Sprintf("%v", err)),
		EndAt:      t.Unix(),
	})

}
func (s *Job) print(ctx context.Context, taskId string) {
	mark := s.R.Desc()

	//捕捉运行panic，不用默认的捕捉，因为没有链路追踪
	defer func() {
		if err := recover(); err != nil {
			app.Logger.Error(ctx, fmt.Sprintf("[%s] 执行错误: %v", mark, err))
		}

		if s.R.Alert() {
			app.FeishuNormalSend("task_id: %s, [%s]正常执行", taskId, mark)
		}
	}()

	//防止多服务器同时执行，用redis上锁
	if s.R.OnceKey() != nil {
		lock := app.NewRedisLock(ctx, s.R.OnceKey().key, rl.SetExpire(s.R.OnceKey().exp))
		if !lock.SoftLock() {
			return
		}
		if s.R.OnceKey().release {
			defer lock.Release()
		}
	}

	//打印日志，知道这个定时任务执行了
	printer.Print(ctx, fmt.Sprintf("执行定时任务:%s", mark), nil)

	//执行任务
	t := time.Now()
	err := s.R.Exec()
	if err != nil {
		app.Logger.Error(ctx, fmt.Sprintf("[%s] 执行错误: %v", mark, err))
		return
	}

	//打印日志，知道这个定时任务执行了
	printer.Print(ctx, fmt.Sprintf("[%s]执行完成，执行时长: %12v", mark, time.Since(t)), err)
}

func NewJob(r IAction) *Job {
	return &Job{R: r}
}