package redis

import (
	"context"
	"fmt"
	"fwh-toolbox-server/cache"
	"fwh-toolbox-server/domain"
	"strconv"
	"time"

	"go.uber.org/zap"
)

var (
	bachDownloadCtx       = context.Background()
	bachDownloadKeyPrefix = "fwhtoolbox:batchDownload:"

	callFileKeyPrefix = bachDownloadKeyPrefix + "callFile:"
)

func CreateCallFileTaskList(id string, list map[string]domain.BatchDownloadFileTaskInfo) error {
	// 保存数据
	var keyList []string
	for key, val := range list {
		rdsKey := callFileKeyPrefix + id + ":" + key
		exp := time.Now().Add(7 * 24 * time.Hour)
		fields := map[string]interface{}{
			"sn":          val.Sn,
			"date":        val.Date,
			"fileType":    val.FileType,
			"fileSubType": val.FileSupType,
			"reason":      val.Reason,
		}
		if err := cache.HSet(bachDownloadCtx, rdsKey, fields); err != nil {
			return err
		}
		_, err := cache.ExpireAt(bachDownloadCtx, rdsKey, exp)
		if err != nil {
			return err
		}
		keyList = append(keyList, key)
	}

	// 保存key list到standby列表
	rdsStandbyKey := callFileKeyPrefix + id + ":standby"
	members := make([]interface{}, len(keyList))
	for i, v := range keyList {
		members[i] = v
	}
	if err := cache.SAdd(bachDownloadCtx, rdsStandbyKey, members); err != nil {
		return err
	}

	return nil
}

func getCallFileTaskList(rdsKey string, listName string) (map[string]domain.BatchDownloadFileTaskInfo, error) {
	// 提取key list
	subKeySet, err := cache.SMembers(bachDownloadCtx, rdsKey+":"+listName)
	if err != nil {
		return nil, err
	}

	// 提取数据
	dataList := map[string]domain.BatchDownloadFileTaskInfo{}
	for _, key := range subKeySet {
		subRdsKey := rdsKey + ":" + key
		res, err := cache.HGetAll(bachDownloadCtx, subRdsKey)
		if err != nil {
			return nil, err
		}
		if len(res) == 0 {
			return nil, fmt.Errorf("key:%s - No Data", subRdsKey)
		}
		devTypeStr := res["devType"]
		var devType int
		if devTypeStr != "" {
			devType, err = strconv.Atoi(devTypeStr)
			if err != nil {
				return nil, err
			}
		}
		sn := res["sn"]
		date := res["date"]
		fileType := res["fileType"]
		fileSubType := res["fileSubType"]
		resultStr := res["result"]
		reason := res["reason"]
		var result int
		if resultStr != "" {
			result, err = strconv.Atoi(resultStr)
			if err != nil {
				return nil, err
			}
		}
		dataList[key] = domain.BatchDownloadFileTaskInfo{
			DevType:     devType,
			Sn:          sn,
			Date:        date,
			FileType:    fileType,
			FileSupType: fileSubType,
			Result:      result,
			Reason:      reason,
		}
	}

	return dataList, nil
}

func GetCallFileTaskStandbyList(id string) (map[string]domain.BatchDownloadFileTaskInfo, error) {
	// 提取key list
	rdsKey := callFileKeyPrefix + id
	return getCallFileTaskList(rdsKey, "standby")
}

func GetCallFileTaskFailedList(id string) (map[string]domain.BatchDownloadFileTaskInfo, error) {
	// 提取key list
	rdsKey := callFileKeyPrefix + id
	return getCallFileTaskList(rdsKey, "failed")
}

func DeleteCallFileTaskList(id string) {
	// 提取failed key list
	rdsKey := callFileKeyPrefix + id + ":failed"
	subKeySet, err := cache.SMembers(bachDownloadCtx, rdsKey)
	if err != nil {
		zap.L().Error("[DeleteBatchDownloadTaskList]回去key list失败", zap.String("key", rdsKey), zap.String("err", err.Error()))
		return
	}

	for _, key := range subKeySet {
		if err := cache.Delete(bachDownloadCtx, key); err != nil {
			zap.L().Error("DeleteBatchDownloadTaskList失败", zap.String("key", key), zap.String("err", err.Error()))
		}
	}

	cache.Delete(bachDownloadCtx, rdsKey)
}

// result 1-成功 -1-失败
func UpdateCallFileResult(id string, taskId string, result int, reason string) error {
	rdsKey := callFileKeyPrefix + id
	subRdsKey := rdsKey + ":" + taskId
	rdsStandbyKey := rdsKey + ":standby"
	rdsFailedKey := rdsKey + ":failed"
	exists, err := cache.SIsMember(bachDownloadCtx, rdsStandbyKey, taskId)
	if err != nil {
		return err
	}
	if !exists {
		return fmt.Errorf("[UpdateBatchDownloadResult]%s中不存在%s", rdsStandbyKey, taskId)
	}

	// 如果成功，则删除list， 否则转移至failed list
	if result == 1 {
		if err := cache.Delete(bachDownloadCtx, subRdsKey); err != nil {
			zap.L().Error("[UpdateCallFileResult] 删除成功list失败", zap.String("key", subRdsKey), zap.String("err", err.Error()))
			return err
		}
	} else {
		// 添加到Failed key
		if err := cache.SAdd(bachDownloadCtx, rdsFailedKey, taskId); err != nil {
			zap.L().Error("[UpdateCallFileResult] 添加failed key失败", zap.String("key", rdsFailedKey), zap.String("err", err.Error()))
			return err
		}

		if err := cache.HSet(bachDownloadCtx, subRdsKey,
			"result", result,
			"reason", reason,
		); err != nil {
			return err
		}
	}

	// 删除Standby key
	if err := cache.SRem(bachDownloadCtx, rdsStandbyKey, taskId); err != nil {
		zap.L().Error("[UpdateCallFileResult] 删除成功key失败", zap.String("key", rdsKey), zap.String("err", err.Error()))
		return err
	}

	return nil
}