package taskcenter

import (
	"bindbox-game/internal/pkg/async"
	"bindbox-game/internal/pkg/logger"
	"bindbox-game/internal/repository/mysql"
	"bindbox-game/internal/repository/mysql/dao"
	tcmodel "bindbox-game/internal/repository/mysql/task_center"
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"time"

	titlesvc "bindbox-game/internal/service/title"
	usersvc "bindbox-game/internal/service/user"

	"github.com/redis/go-redis/v9"
	"go.uber.org/zap"
	"gorm.io/datatypes"
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
)

type Service interface {
	ListTasks(ctx context.Context, in ListTasksInput) (items []TaskItem, total int64, err error)
	CreateTask(ctx context.Context, in CreateTaskInput) (int64, error)
	ModifyTask(ctx context.Context, id int64, in ModifyTaskInput) error
	DeleteTask(ctx context.Context, id int64) error
	ListTaskTiers(ctx context.Context, taskID int64) ([]TaskTierItem, error)
	UpsertTaskTiers(ctx context.Context, taskID int64, tiers []TaskTierInput) error
	ListTaskRewards(ctx context.Context, taskID int64) ([]TaskRewardItem, error)
	UpsertTaskRewards(ctx context.Context, taskID int64, rewards []TaskRewardInput) error
	GetUserProgress(ctx context.Context, userID int64, taskID int64) (*UserProgress, error)
	ClaimTier(ctx context.Context, userID int64, taskID int64, tierID int64) error
	OnOrderPaid(ctx context.Context, userID int64, orderID int64) error
	OnInviteSuccess(ctx context.Context, inviterID int64, inviteeID int64) error
	StartWorker(ctx context.Context)
}

type service struct {
	logger   logger.CustomLogger
	readDB   *dao.Query
	writeDB  *dao.Query
	repo     mysql.Repo
	redis    *redis.Client
	queue    async.TaskQueue
	userSvc  usersvc.Service
	titleSvc titlesvc.Service
}

func New(l logger.CustomLogger, db mysql.Repo, rdb *redis.Client, userSvc usersvc.Service, titleSvc titlesvc.Service) Service {
	var q async.TaskQueue
	if rdb != nil {
		q = async.NewRedisTaskQueue(rdb)
	}
	return &service{
		logger:   l,
		readDB:   dao.Use(db.GetDbR()),
		writeDB:  dao.Use(db.GetDbW()),
		repo:     db,
		redis:    rdb,
		queue:    q,
		userSvc:  userSvc,
		titleSvc: titleSvc,
	}
}

type ListTasksInput struct {
	Page     int
	PageSize int
}

type TaskItem struct {
	ID          int64
	Name        string
	Description string
	Status      int32
	StartTime   int64
	EndTime     int64
	Visibility  int32
	Tiers       []TaskTierItem
	Rewards     []TaskRewardItem
}

type UserProgress struct {
	TaskID       int64
	UserID       int64
	OrderCount   int64
	InviteCount  int64
	FirstOrder   bool
	ClaimedTiers []int64
}

type CreateTaskInput struct {
	Name        string
	Description string
	Status      int32
	StartTime   *time.Time
	EndTime     *time.Time
	Visibility  int32
}

type ModifyTaskInput struct {
	Name        string
	Description string
	Status      int32
	StartTime   *time.Time
	EndTime     *time.Time
	Visibility  int32
}

type TaskTierInput struct {
	Metric      string
	Operator    string
	Threshold   int64
	Window      string
	Repeatable  int32
	Priority    int32
	ExtraParams datatypes.JSON
}

type TaskTierItem struct {
	ID          int64          `json:"id"`
	Metric      string         `json:"metric"`
	Operator    string         `json:"operator"`
	Threshold   int64          `json:"threshold"`
	Window      string         `json:"window"`
	Repeatable  int32          `json:"repeatable"`
	Priority    int32          `json:"priority"`
	ExtraParams datatypes.JSON `json:"extra_params"`
}

type TaskRewardInput struct {
	TierID        int64          `json:"tier_id"`
	RewardType    string         `json:"reward_type"`
	RewardPayload datatypes.JSON `json:"reward_payload"`
	Quantity      int64          `json:"quantity"`
}

type TaskRewardItem struct {
	ID            int64          `json:"id"`
	TierID        int64          `json:"tier_id"`
	RewardType    string         `json:"reward_type"`
	RewardPayload datatypes.JSON `json:"reward_payload"`
	Quantity      int64          `json:"quantity"`
}

func (s *service) ListTasks(ctx context.Context, in ListTasksInput) (items []TaskItem, total int64, err error) {
	db := s.repo.GetDbR()
	var rows []tcmodel.Task
	q := db.Model(&tcmodel.Task{})
	if in.PageSize <= 0 {
		in.PageSize = 20
	}
	if in.Page <= 0 {
		in.Page = 1
	}
	if err = q.Count(&total).Error; err != nil {
		return nil, 0, err
	}
	if err = q.Preload("Tiers", func(db *gorm.DB) *gorm.DB {
		return db.Order("priority asc, id asc")
	}).Preload("Rewards", func(db *gorm.DB) *gorm.DB {
		return db.Order("id asc")
	}).Offset((in.Page - 1) * in.PageSize).Limit(in.PageSize).Order("id desc").Find(&rows).Error; err != nil {
		return nil, 0, err
	}
	out := make([]TaskItem, len(rows))
	for i, v := range rows {
		var st, et int64
		if v.StartTime != nil {
			st = v.StartTime.Unix()
		}
		if v.EndTime != nil {
			et = v.EndTime.Unix()
		}
		out[i] = TaskItem{ID: v.ID, Name: v.Name, Description: v.Description, Status: v.Status, StartTime: st, EndTime: et, Visibility: v.Visibility}
		// 填充 Tiers
		out[i].Tiers = make([]TaskTierItem, len(v.Tiers))
		for j, t := range v.Tiers {
			out[i].Tiers[j] = TaskTierItem{ID: t.ID, Metric: t.Metric, Operator: t.Operator, Threshold: t.Threshold, Window: t.Window, Repeatable: t.Repeatable, Priority: t.Priority, ExtraParams: t.ExtraParams}
		}
		// 填充 Rewards
		out[i].Rewards = make([]TaskRewardItem, len(v.Rewards))
		for j, r := range v.Rewards {
			out[i].Rewards[j] = TaskRewardItem{ID: r.ID, TierID: r.TierID, RewardType: r.RewardType, RewardPayload: r.RewardPayload, Quantity: r.Quantity}
		}
	}
	return out, total, nil
}

func (s *service) GetUserProgress(ctx context.Context, userID int64, taskID int64) (*UserProgress, error) {
	db := s.repo.GetDbR()
	var row tcmodel.UserTaskProgress
	if err := db.Where("user_id=? AND task_id=?", userID, taskID).First(&row).Error; err != nil {
		return &UserProgress{TaskID: taskID, UserID: userID, ClaimedTiers: []int64{}}, nil
	}
	var claimed []int64
	if len(row.ClaimedTiers) > 0 {
		_ = json.Unmarshal([]byte(row.ClaimedTiers), &claimed)
	}
	return &UserProgress{TaskID: taskID, UserID: userID, OrderCount: row.OrderCount, InviteCount: row.InviteCount, FirstOrder: row.FirstOrder == 1, ClaimedTiers: claimed}, nil
}

func (s *service) ClaimTier(ctx context.Context, userID int64, taskID int64, tierID int64) error {
	return s.repo.GetDbW().Transaction(func(tx *gorm.DB) error {
		var p tcmodel.UserTaskProgress
		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("user_id=? AND task_id=?", userID, taskID).First(&p).Error; err != nil {
			return errors.New("progress_not_found")
		}
		var claimed []int64
		if len(p.ClaimedTiers) > 0 {
			_ = json.Unmarshal([]byte(p.ClaimedTiers), &claimed)
		}
		for _, id := range claimed {
			if id == tierID {
				return nil
			}
		}
		claimed = append(claimed, tierID)
		b, _ := json.Marshal(claimed)
		p.ClaimedTiers = datatypes.JSON(b)
		return tx.Model(&tcmodel.UserTaskProgress{}).Where("id=?", p.ID).Update("claimed_tiers", p.ClaimedTiers).Error
	})
}

func (s *service) CreateTask(ctx context.Context, in CreateTaskInput) (int64, error) {
	db := s.repo.GetDbW()
	row := &tcmodel.Task{Name: in.Name, Description: in.Description, Status: in.Status, StartTime: in.StartTime, EndTime: in.EndTime, Visibility: in.Visibility}
	if err := db.Create(row).Error; err != nil {
		return 0, err
	}
	return row.ID, s.invalidateCache(ctx)
}

func (s *service) ModifyTask(ctx context.Context, id int64, in ModifyTaskInput) error {
	db := s.repo.GetDbW()
	if err := db.Model(&tcmodel.Task{}).Where("id=?", id).Updates(map[string]any{"name": in.Name, "description": in.Description, "status": in.Status, "start_time": in.StartTime, "end_time": in.EndTime, "visibility": in.Visibility}).Error; err != nil {
		return err
	}
	return s.invalidateCache(ctx)
}

func (s *service) DeleteTask(ctx context.Context, id int64) error {
	db := s.repo.GetDbW()
	if err := db.Where("id=?", id).Delete(&tcmodel.Task{}).Error; err != nil {
		return err
	}
	return s.invalidateCache(ctx)
}

func (s *service) ListTaskTiers(ctx context.Context, taskID int64) ([]TaskTierItem, error) {
	db := s.repo.GetDbR()
	var rows []tcmodel.TaskTier
	if err := db.Where("task_id=?", taskID).Order("priority asc, id asc").Find(&rows).Error; err != nil {
		return nil, err
	}
	out := make([]TaskTierItem, len(rows))
	for i, v := range rows {
		out[i] = TaskTierItem{ID: v.ID, Metric: v.Metric, Operator: v.Operator, Threshold: v.Threshold, Window: v.Window, Repeatable: v.Repeatable, Priority: v.Priority, ExtraParams: v.ExtraParams}
	}
	return out, nil
}

func (s *service) UpsertTaskTiers(ctx context.Context, taskID int64, tiers []TaskTierInput) error {
	db := s.repo.GetDbW()
	if err := db.Where("task_id=?", taskID).Delete(&tcmodel.TaskTier{}).Error; err != nil {
		return err
	}
	for _, t := range tiers {
		row := &tcmodel.TaskTier{TaskID: taskID, Metric: t.Metric, Operator: t.Operator, Threshold: t.Threshold, Window: t.Window, Repeatable: t.Repeatable, Priority: t.Priority, ExtraParams: t.ExtraParams}
		if err := db.Create(row).Error; err != nil {
			return err
		}
	}
	return s.invalidateCache(ctx)
}

func (s *service) ListTaskRewards(ctx context.Context, taskID int64) ([]TaskRewardItem, error) {
	db := s.repo.GetDbR()
	var rows []tcmodel.TaskReward
	if err := db.Where("task_id=?", taskID).Order("id asc").Find(&rows).Error; err != nil {
		return nil, err
	}
	out := make([]TaskRewardItem, len(rows))
	for i, v := range rows {
		out[i] = TaskRewardItem{ID: v.ID, TierID: v.TierID, RewardType: v.RewardType, RewardPayload: v.RewardPayload, Quantity: v.Quantity}
	}
	return out, nil
}

func (s *service) UpsertTaskRewards(ctx context.Context, taskID int64, rewards []TaskRewardInput) error {
	db := s.repo.GetDbW()
	if err := db.Where("task_id=?", taskID).Delete(&tcmodel.TaskReward{}).Error; err != nil {
		return err
	}
	for _, r := range rewards {
		row := &tcmodel.TaskReward{TaskID: taskID, TierID: r.TierID, RewardType: r.RewardType, RewardPayload: r.RewardPayload, Quantity: r.Quantity}
		if err := db.Create(row).Error; err != nil {
			return err
		}
	}
	return s.invalidateCache(ctx)
}

func (s *service) OnOrderPaid(ctx context.Context, userID int64, orderID int64) error {
	if s.queue != nil {
		return s.queue.PublishOrderPaid(ctx, userID, orderID)
	}
	return s.processOrderPaid(ctx, userID, orderID)
}

func (s *service) processOrderPaid(ctx context.Context, userID int64, orderID int64) error {
	// 1. 获取订单金额
	ord, err := s.readDB.Orders.WithContext(ctx).Where(s.readDB.Orders.ID.Eq(orderID)).First()
	if err != nil {
		return err
	}
	amount := ord.ActualAmount

	// 2. 更新邀请人累计金额并检查是否触发有效邀请
	var inviterID int64
	var oldAmount int64
	var newAmount int64

	// 使用事务更新 UserInvites
	err = s.writeDB.Transaction(func(tx *dao.Query) error {
		uInv, err := tx.UserInvites.WithContext(ctx).Clauses(clause.Locking{Strength: "UPDATE"}).Where(tx.UserInvites.InviteeID.Eq(userID)).First()
		if err != nil {
			if errors.Is(err, gorm.ErrRecordNotFound) {
				return nil
			}
			return err
		}
		inviterID = uInv.InviterID
		oldAmount = uInv.AccumulatedAmount
		newAmount = oldAmount + amount

		updates := map[string]any{
			"accumulated_amount": newAmount,
		}
		_, err = tx.UserInvites.WithContext(ctx).Where(tx.UserInvites.ID.Eq(uInv.ID)).Updates(updates)
		return err
	})
	if err != nil {
		return err
	}

	// 3. 处理普通任务
	tasks, err := s.getActiveTasks(ctx)
	if err != nil {
		return err
	}
	for _, t := range tasks {
		// Filter tasks: Only process if it has order related metrics
		hasOrderMetric := false
		for _, tier := range t.Tiers {
			if tier.Metric == MetricFirstOrder || tier.Metric == MetricOrderCount {
				hasOrderMetric = true
				break
			}
		}
		if !hasOrderMetric {
			continue
		}

		var p tcmodel.UserTaskProgress
		err := s.repo.GetDbW().Transaction(func(tx *gorm.DB) error {
			if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("user_id=? AND task_id=?", userID, t.ID).First(&p).Error; err != nil {
				if errors.Is(err, gorm.ErrRecordNotFound) {
					p = tcmodel.UserTaskProgress{UserID: userID, TaskID: t.ID, OrderCount: 1, FirstOrder: 1}
					return tx.Create(&p).Error
				}
				return err
			}
			if err := s.checkAndResetDailyProgress(ctx, tx, &t, &p); err != nil {
				return err
			}
			p.OrderCount++
			if p.OrderCount == 1 {
				p.FirstOrder = 1
			}
			return tx.Save(&p).Error
		})
		if err != nil {
			s.logger.Error("failed to update progress", zap.Error(err))
			continue
		}
		if err := s.matchAndGrant(ctx, &t, &p, "order", orderID, fmt.Sprintf("ord:%d", orderID)); err != nil {
			s.logger.Error("failed to grant reward", zap.Error(err))
		}
	}

	// 4. 处理邀请人任务 (有效邀请)
	if inviterID > 0 {
		for _, t := range tasks {
			tiers := t.Tiers
			// 检查该任务是否有 effective_invite_count 类型的 Tier，且是否刚好跨越阈值
			triggered := false
			for _, tier := range tiers {
				if tier.Metric == MetricEffectiveInviteCount {
					var extra struct {
						AmountThreshold int64 `json:"amount_threshold"`
					}
					if len(tier.ExtraParams) > 0 {
						_ = json.Unmarshal([]byte(tier.ExtraParams), &extra)
					}
					threshold := extra.AmountThreshold
					if threshold <= 0 {
						threshold = 1 // 默认任意金额
					}

					// 如果之前的累计金额未达到阈值，而现在的累计金额达到了阈值，则触发
					if oldAmount < threshold && newAmount >= threshold {
						triggered = true
						break // 该任务触发一次即可
					}
				}
			}

			if triggered {
				var pInv tcmodel.UserTaskProgress
				err := s.repo.GetDbW().Transaction(func(tx *gorm.DB) error {
					if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("user_id=? AND task_id=?", inviterID, t.ID).First(&pInv).Error; err != nil {
						if errors.Is(err, gorm.ErrRecordNotFound) {
							pInv = tcmodel.UserTaskProgress{UserID: inviterID, TaskID: t.ID, EffectiveInviteCount: 1}
							return tx.Create(&pInv).Error
						}
						return err
					}
					// 有效邀请通常不重置（除非是每日任务？一般是长期任务）
					if err := s.checkAndResetDailyProgress(ctx, tx, &t, &pInv); err != nil {
						return err
					}
					pInv.EffectiveInviteCount++
					return tx.Save(&pInv).Error
				})
				if err == nil {
					// 尝试发放奖励
					// sourceID 使用 userID (被邀请人ID)，eventID 使用特殊前缀防止混淆
					_ = s.matchAndGrant(ctx, &t, &pInv, SourceTypeEffectiveInvite, userID, fmt.Sprintf("eff_inv:%d:%d", userID, t.ID))
				} else {
					s.logger.Error("failed to update inviter progress", zap.Error(err))
				}
			}
		}
	}
	return nil
}

func (s *service) OnInviteSuccess(ctx context.Context, inviterID int64, inviteeID int64) error {
	if s.queue != nil {
		return s.queue.PublishInviteSuccess(ctx, inviterID, inviteeID)
	}
	return s.processInviteSuccess(ctx, inviterID, inviteeID)
}

func (s *service) processInviteSuccess(ctx context.Context, inviterID int64, inviteeID int64) error {
	tasks, err := s.getActiveTasks(ctx)
	if err != nil {
		return err
	}
	for _, t := range tasks {
		hasInviteMetric := false
		for _, tier := range t.Tiers {
			if tier.Metric == MetricInviteCount {
				hasInviteMetric = true
				break
			}
		}
		if !hasInviteMetric {
			continue
		}

		var p tcmodel.UserTaskProgress
		err := s.repo.GetDbW().Transaction(func(tx *gorm.DB) error {
			if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("user_id=? AND task_id=?", inviterID, t.ID).First(&p).Error; err != nil {
				if errors.Is(err, gorm.ErrRecordNotFound) {
					p = tcmodel.UserTaskProgress{UserID: inviterID, TaskID: t.ID, InviteCount: 1}
					return tx.Create(&p).Error
				}
				return err
			}
			if err := s.checkAndResetDailyProgress(ctx, tx, &t, &p); err != nil {
				return err
			}
			p.InviteCount++
			return tx.Save(&p).Error
		})
		if err != nil {
			return err
		}
		if err := s.matchAndGrant(ctx, &t, &p, SourceTypeInvite, inviteeID, fmt.Sprintf("inv:%d", inviteeID)); err != nil {
			return err
		}
	}
	return nil
}

func (s *service) checkAndResetDailyProgress(ctx context.Context, tx *gorm.DB, t *tcmodel.Task, p *tcmodel.UserTaskProgress) error {
	isDaily := false
	if len(t.Tiers) > 0 {
		for _, tier := range t.Tiers {
			if tier.Window == WindowDaily {
				isDaily = true
				break
			}
		}
	} else {
		var count int64
		if err := tx.Model(&tcmodel.TaskTier{}).Where("task_id = ? AND window = ?", t.ID, WindowDaily).Count(&count).Error; err != nil {
			return err
		}
		isDaily = count > 0
	}

	if !isDaily {
		return nil
	}
	now := time.Now()
	if p.UpdatedAt.IsZero() {
		return nil
	}
	y1, m1, d1 := p.UpdatedAt.Date()
	y2, m2, d2 := now.Date()
	if y1 == y2 && m1 == m2 && d1 == d2 {
		return nil
	}
	p.OrderCount = 0
	p.InviteCount = 0
	p.FirstOrder = 0
	p.ClaimedTiers = datatypes.JSON("[]")
	return nil
}

func (s *service) matchAndGrant(ctx context.Context, t *tcmodel.Task, p *tcmodel.UserTaskProgress, sourceType string, sourceID int64, eventID string) error {
	tiers := t.Tiers
	if len(tiers) == 0 {
		if err := s.repo.GetDbR().Where("task_id=?", t.ID).Order("priority asc").Find(&tiers).Error; err != nil {
			return err
		}
	}
	var claimed []int64
	if len(p.ClaimedTiers) > 0 {
		_ = json.Unmarshal([]byte(p.ClaimedTiers), &claimed)
	}
	claimedSet := map[int64]struct{}{}
	for _, id := range claimed {
		claimedSet[id] = struct{}{}
	}
	for _, tier := range tiers {
		if _, ok := claimedSet[tier.ID]; ok {
			continue
		}
		hit := false
		switch tier.Metric {
		case MetricFirstOrder:
			hit = p.FirstOrder == 1
		case MetricOrderCount:
			if tier.Operator == OperatorGTE {
				hit = p.OrderCount >= tier.Threshold
			} else {
				hit = p.OrderCount == tier.Threshold
			}
		case MetricInviteCount:
			if tier.Operator == OperatorGTE {
				hit = p.InviteCount >= tier.Threshold
			} else {
				hit = p.InviteCount == tier.Threshold
			}
		case MetricEffectiveInviteCount:
			if tier.Operator == OperatorGTE {
				hit = p.EffectiveInviteCount >= tier.Threshold
			} else {
				hit = p.EffectiveInviteCount == tier.Threshold
			}
		}
		if !hit {
			continue
		}
		if err := s.grantTierRewards(ctx, t.ID, tier.ID, p.UserID, sourceType, sourceID, eventID); err != nil {
			return err
		}

		// 安全更新状态
		err := s.repo.GetDbW().Transaction(func(tx *gorm.DB) error {
			var latestP tcmodel.UserTaskProgress
			if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("id=?", p.ID).First(&latestP).Error; err != nil {
				return err
			}
			var latestClaimed []int64
			if len(latestP.ClaimedTiers) > 0 {
				_ = json.Unmarshal([]byte(latestP.ClaimedTiers), &latestClaimed)
			}
			for _, id := range latestClaimed {
				if id == tier.ID {
					return nil
				}
			}
			latestClaimed = append(latestClaimed, tier.ID)
			b, _ := json.Marshal(latestClaimed)
			latestP.ClaimedTiers = datatypes.JSON(b)
			return tx.Model(&latestP).Update("claimed_tiers", latestP.ClaimedTiers).Error
		})
		if err != nil {
			return err
		}
	}
	return nil
}

func (s *service) grantTierRewards(ctx context.Context, taskID int64, tierID int64, userID int64, sourceType string, sourceID int64, eventID string) error {
	var rewards []tcmodel.TaskReward
	if err := s.repo.GetDbR().Where("task_id=? AND tier_id=?", taskID, tierID).Find(&rewards).Error; err != nil {
		return err
	}
	idk := fmt.Sprintf("%d:%d:%d:%s:%d", userID, taskID, tierID, sourceType, sourceID)
	var exists tcmodel.TaskEventLog
	if err := s.repo.GetDbR().Where("idempotency_key=?", idk).First(&exists).Error; err == nil && exists.ID > 0 {
		return nil
	}
	tx := s.repo.GetDbW().Begin()
	for _, r := range rewards {
		var err error
		switch r.RewardType {
		case "points":
			var pl struct{ Points int64 }
			_ = json.Unmarshal([]byte(r.RewardPayload), &pl)
			if pl.Points != 0 {
				err = s.userSvc.AddPoints(ctx, userID, pl.Points, "", "task_center", nil, nil)
			}
		case "coupon":
			var pl struct {
				CouponID int64
				Quantity int
			}
			_ = json.Unmarshal([]byte(r.RewardPayload), &pl)
			if pl.CouponID > 0 {
				qty := 1
				if pl.Quantity > 0 {
					qty = pl.Quantity
				}
				for i := 0; i < qty; i++ {
					if err = s.userSvc.AddCoupon(ctx, userID, pl.CouponID); err != nil {
						break
					}
				}
			}
		case "item_card":
			var pl struct {
				CardID   int64
				Quantity int
			}
			_ = json.Unmarshal([]byte(r.RewardPayload), &pl)
			if pl.CardID > 0 {
				if pl.Quantity <= 0 {
					pl.Quantity = 1
				}
				err = s.userSvc.AddItemCard(ctx, userID, pl.CardID, pl.Quantity)
			}
		case "title":
			var pl struct{ TitleID int64 }
			_ = json.Unmarshal([]byte(r.RewardPayload), &pl)
			if pl.TitleID > 0 {
				err = s.titleSvc.AssignUserTitle(ctx, userID, pl.TitleID, nil, "task_center")
			}
		}
		if err != nil {
			tx.Rollback()
			return err
		}
	}
	if err := tx.Create(&tcmodel.TaskEventLog{EventID: eventID, SourceType: sourceType, SourceID: sourceID, UserID: userID, TaskID: taskID, TierID: tierID, IdempotencyKey: idk, Status: "granted"}).Error; err != nil {
		tx.Rollback()
		return err
	}
	return tx.Commit().Error
}