package export_task

import (
	"91porn-server/common"
	"91porn-server/common/log"
	"91porn-server/models/l/playlgmod"
	"91porn-server/models/v/export_task_mod"
	"91porn-server/models/v/usermod"
	"encoding/json"
	"errors"
	"fmt"
	"go.mongodb.org/mongo-driver/bson"
	"sync"
)

// ExecExportUserTask 执行用户导出任务
func ExecExportUserTask(task *export_task_mod.ExportTask) (total int64, err error) {
	type userListReq struct {
		usermod.UserListSelector
		common.StandQuery
		IsPretendAcc *int `form:"isPretendAcc" json:"isPretendAcc"` //是否马甲账号
	}
	var arg userListReq
	err = json.Unmarshal([]byte(task.Param), &arg)
	if err != nil {
		return
	}
	if arg.StartTime == nil || arg.EndTime == nil {
		return 0, errors.New("没有选择时间")
	}
	cond, _ := common.StandQueryMap(arg.StandQuery, arg.UserListSelector)
	//马甲账户
	if arg.IsPretendAcc != nil && *arg.IsPretendAcc == 1 {
		cond["devID"] = bson.M{"$regex": usermod.SystemDevIDPrex, "$options": "i"}
	}
	var skip int64
	var size int64 = 500
	records := []usermod.ExportUser{}

	zipName := fmt.Sprintf("%v_%v_用户列表_%v.zip", task.Admin, GetProName(), task.CreatedAt.Format("2006-01-02_15:04:05"))
	index := 1

	path := fmt.Sprintf("./temp/%v%v", "用户列表-", task.ID.Hex())
	excelList := []string{}
	// 最后一条记录的时间
	for {
		userList, err := usermod.ExportFindMany(cond, skip, size)
		if err != nil {
			log.Error("ExecExportUserTask fail", log.E(err))
			return total, err
		}
		videoCntMap := make(map[uint64]int)
		unDealVideoCntMap := make(map[uint64]int)
		// 针对91PORN做的优化，不然数据太多，导出数据文本太大，速度慢
		//if arg.IsPretendAcc != nil && *arg.IsPretendAcc == 1 {
		//	videoCntMap, unDealVideoCntMap, _ = vidmod.GetVideosByUIDs(getUIDs(userList))
		//}
		eUsers := encodeUsers(userList, videoCntMap, unDealVideoCntMap)

		records = append(records, eUsers...)
		var fileName = fmt.Sprintf("用户列表_%v.xlsx", index)
		// 最多容纳5000条
		if len(records) >= maxDataNum {
			// 直接写入excel
			filePath, err := SaveExcel(records, path, fileName)
			if err != nil {
				log.Error("ExecExportVideoTask SaveExcel fail", log.E(err))
				return total, err
			}
			// 重置
			records = []usermod.ExportUser{}
			index = index + 1
			excelList = append(excelList, filePath)
			total = total + int64(len(records))
		} else if len(userList) < int(size) {
			if len(records) > 0 {
				// 直接写入excel
				filePath, err := SaveExcel(records, path, fileName)
				if err != nil {
					log.Error("ExecExportVideoTask SaveExcel fail", log.E(err))
					return total, err
				}
				excelList = append(excelList, filePath)
				total = total + int64(len(records))
			}
			// 已经没有更多数据了，直接返回
			break
		}

		skip = skip + size
	}
	// 发送到tg
	err = SendTg(task.Admin, excelList, zipName)
	if err != nil {
		log.Error("ExecExportUserTask SendTg fail", log.E(err))
		return
	}
	return total, nil
}

func encodeUsers(users []*usermod.User, videoCntMap map[uint64]int, unDealVideoCntMap map[uint64]int) []usermod.ExportUser {
	usersLen := len(users)
	uids := make([]uint64, 0, usersLen)
	uInfos := make([]usermod.ExportUser, 0, usersLen)
	for _, u := range users {
		if u != nil {
			user := usermod.ExportUser{
				UID: u.UID,
				//DevID:          u.DevID,
				DevType:    u.DevType,
				RegisterIP: u.RegisterIP,
				Mobile:     u.Mobile,
				//Gender:         u.Gender,
				Channel: u.DistrictCode,
				//Name:           u.Name,
				PromotionCode: u.PromCode,
				//Summary:        u.Summary,
				//Region:         u.Region,
				//Birthday:       u.Birthday,
				//VipLevel:       u.VipLevel,
				VipExpireDate: u.VipExpireDate,
				CreatedAt:     u.CreatedAt,
				//MobileBindAt:   u.MobileBindAt,
				//HasLocked:      u.HasLocked,
				//HasBanned:      u.HasBanned,
				//TotalVideoCnt:  videoCntMap[u.UID],
				//UndealVideoCnt: unDealVideoCntMap[u.UID],
				LastVisitAt: u.LastVisitAt,
			}
			uInfos = append(uInfos, user)
			uids = append(uids, u.UID)
		}
	}
	wCnt := setArray2Map(calWatchedVideoCnt(uids))
	for i, u := range uInfos {
		uInfos[i].WatchCount = wCnt[u.UID]
	}
	return uInfos
}

func getUIDs(users []*usermod.User) []uint64 {
	uids := make([]uint64, 0, len(users))
	for _, v := range users {
		if v == nil {
			continue
		}
		uids = append(uids, v.UID)
	}
	return uids
}

func setArray2Map(datas []playlgmod.UIDCount) map[uint64]int {
	m := make(map[uint64]int)
	for _, d := range datas {
		m[d.UID] = d.Count
	}
	return m
}

func calWatchedVideoCnt(uids []uint64) []playlgmod.UIDCount {
	le := len(uids)
	if le < 1000 {
		datas, _ := playlgmod.HasWatchedVideoCnt(uids)
		return datas
	}
	//创建多个协程去拉取
	const goRoutineCnt = 10
	var wg sync.WaitGroup
	var mData [goRoutineCnt][]playlgmod.UIDCount
	size := le / goRoutineCnt
	wg.Add(goRoutineCnt)
	for i := 0; i < goRoutineCnt-1; i++ {
		common.GoParam(i, func(i int) {
			defer wg.Done()
			begin := i * size
			end := begin + size - 1
			mData[i], _ = playlgmod.HasWatchedVideoCnt(uids[begin:end])
		})
	}
	common.Go(func() {
		defer wg.Done()
		begin := (goRoutineCnt - 1) * size
		end := le - 1
		mData[goRoutineCnt-1], _ = playlgmod.HasWatchedVideoCnt(uids[begin:end])
	})
	wg.Wait()
	datas := []playlgmod.UIDCount{}
	for i := 0; i < goRoutineCnt; i++ {
		datas = append(datas, mData[i]...)
	}
	return datas
}