web
This commit is contained in:
sjk
@@ -1,6 +1,7 @@
|
||||
package service
|
||||
|
||||
import (
|
||||
"context"
|
||||
"dianshang/internal/model"
|
||||
"dianshang/internal/repository"
|
||||
"errors"
|
||||
@@ -224,3 +225,338 @@ func (s *CouponService) GetAvailableCouponsForOrder(userID uint, orderAmount flo
|
||||
|
||||
return availableCoupons, nil
|
||||
}
|
||||
|
||||
// ==================== 管理端方法 ====================
|
||||
|
||||
// GetCouponListForAdmin 获取优惠券列表（管理端）
|
||||
func (s *CouponService) GetCouponListForAdmin(page, pageSize int, status, couponType, keyword string) ([]model.Coupon, int64, error) {
|
||||
return s.couponRepo.GetCouponListForAdmin(page, pageSize, status, couponType, keyword)
|
||||
}
|
||||
|
||||
// GetCouponDetailForAdmin 获取优惠券详情（管理端）
|
||||
func (s *CouponService) GetCouponDetailForAdmin(couponID uint) (*model.Coupon, error) {
|
||||
coupon, err := s.couponRepo.GetByID(couponID)
|
||||
if err != nil {
|
||||
return nil, errors.New("优惠券不存在")
|
||||
}
|
||||
|
||||
// 获取优惠券的使用统计（注意：领取数和使用数不在Coupon表中，而是在UserCoupon表中统计）
|
||||
// 这里仅作为查询，不修改coupon对象
|
||||
_, _, _ = s.couponRepo.GetCouponUsageStats(couponID)
|
||||
|
||||
return coupon, nil
|
||||
}
|
||||
|
||||
// CreateCoupon 创建优惠券
|
||||
func (s *CouponService) CreateCoupon(req interface{}, adminID uint) (*model.Coupon, error) {
|
||||
// 类型断言
|
||||
type CreateCouponRequest struct {
|
||||
Name string
|
||||
Type int
|
||||
Value int64
|
||||
MinAmount int64
|
||||
Description string
|
||||
StartTime time.Time
|
||||
EndTime time.Time
|
||||
TotalCount int
|
||||
Status int
|
||||
}
|
||||
|
||||
reqData, ok := req.(*CreateCouponRequest)
|
||||
if !ok {
|
||||
return nil, errors.New("无效的请求参数")
|
||||
}
|
||||
|
||||
// 验证时间
|
||||
if reqData.EndTime.Before(reqData.StartTime) {
|
||||
return nil, errors.New("结束时间不能早于开始时间")
|
||||
}
|
||||
|
||||
// 验证优惠券类型和值
|
||||
switch reqData.Type {
|
||||
case 1: // 满减券，value是金额（分）
|
||||
if reqData.Value <= 0 {
|
||||
return nil, errors.New("满减券优惠金额必须大于0")
|
||||
}
|
||||
case 2: // 折扣券，value是折扣（85表示8.5折）
|
||||
if reqData.Value <= 0 || reqData.Value > 100 {
|
||||
return nil, errors.New("折扣券折扣必须在0-100之间")
|
||||
}
|
||||
case 3: // 免邮券
|
||||
// 免邮券不需要验证value
|
||||
default:
|
||||
return nil, errors.New("不支持的优惠券类型")
|
||||
}
|
||||
|
||||
coupon := &model.Coupon{
|
||||
Name: reqData.Name,
|
||||
Type: uint8(reqData.Type),
|
||||
Value: uint(reqData.Value),
|
||||
MinAmount: uint(reqData.MinAmount),
|
||||
Description: reqData.Description,
|
||||
StartTime: reqData.StartTime,
|
||||
EndTime: reqData.EndTime,
|
||||
TotalCount: uint(reqData.TotalCount),
|
||||
UsedCount: 0,
|
||||
Status: uint8(reqData.Status),
|
||||
CreatedAt: time.Now(),
|
||||
UpdatedAt: time.Now(),
|
||||
}
|
||||
|
||||
err := s.couponRepo.Create(coupon)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("创建优惠券失败: %v", err)
|
||||
}
|
||||
|
||||
return coupon, nil
|
||||
}
|
||||
|
||||
// UpdateCoupon 更新优惠券
|
||||
func (s *CouponService) UpdateCoupon(couponID uint, req interface{}) error {
|
||||
// 检查优惠券是否存在
|
||||
_, err := s.couponRepo.GetByID(couponID)
|
||||
if err != nil {
|
||||
return errors.New("优惠券不存在")
|
||||
}
|
||||
|
||||
// 类型断言
|
||||
type UpdateCouponRequest struct {
|
||||
Name string
|
||||
Type int
|
||||
Value int64
|
||||
MinAmount int64
|
||||
Description string
|
||||
StartTime time.Time
|
||||
EndTime time.Time
|
||||
TotalCount int
|
||||
Status int
|
||||
}
|
||||
|
||||
reqData, ok := req.(*UpdateCouponRequest)
|
||||
if !ok {
|
||||
return errors.New("无效的请求参数")
|
||||
}
|
||||
|
||||
// 验证时间
|
||||
if !reqData.EndTime.IsZero() && !reqData.StartTime.IsZero() {
|
||||
if reqData.EndTime.Before(reqData.StartTime) {
|
||||
return errors.New("结束时间不能早于开始时间")
|
||||
}
|
||||
}
|
||||
|
||||
updates := make(map[string]interface{})
|
||||
if reqData.Name != "" {
|
||||
updates["name"] = reqData.Name
|
||||
}
|
||||
if reqData.Type > 0 {
|
||||
updates["type"] = reqData.Type
|
||||
}
|
||||
if reqData.Value > 0 {
|
||||
updates["value"] = reqData.Value
|
||||
}
|
||||
if reqData.MinAmount >= 0 {
|
||||
updates["min_amount"] = reqData.MinAmount
|
||||
}
|
||||
if reqData.Description != "" {
|
||||
updates["description"] = reqData.Description
|
||||
}
|
||||
if !reqData.StartTime.IsZero() {
|
||||
updates["start_time"] = reqData.StartTime
|
||||
}
|
||||
if !reqData.EndTime.IsZero() {
|
||||
updates["end_time"] = reqData.EndTime
|
||||
}
|
||||
if reqData.TotalCount >= 0 {
|
||||
updates["total_count"] = reqData.TotalCount
|
||||
}
|
||||
if reqData.Status >= 0 {
|
||||
updates["status"] = reqData.Status
|
||||
}
|
||||
updates["updated_at"] = time.Now()
|
||||
|
||||
return s.couponRepo.Update(couponID, updates)
|
||||
}
|
||||
|
||||
// DeleteCoupon 删除优惠券
|
||||
func (s *CouponService) DeleteCoupon(couponID uint) error {
|
||||
// 检查是否有用户已领取
|
||||
hasUsers, err := s.couponRepo.CheckCouponHasUsers(couponID)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if hasUsers {
|
||||
return errors.New("该优惠券已被用户领取，无法删除")
|
||||
}
|
||||
|
||||
return s.couponRepo.Delete(couponID)
|
||||
}
|
||||
|
||||
// UpdateCouponStatus 更新优惠券状态
|
||||
func (s *CouponService) UpdateCouponStatus(couponID uint, status int) error {
|
||||
_, err := s.couponRepo.GetByID(couponID)
|
||||
if err != nil {
|
||||
return errors.New("优惠券不存在")
|
||||
}
|
||||
|
||||
updates := map[string]interface{}{
|
||||
"status": status,
|
||||
"updated_at": time.Now(),
|
||||
}
|
||||
|
||||
return s.couponRepo.Update(couponID, updates)
|
||||
}
|
||||
|
||||
// BatchDeleteCoupons 批量删除优惠券
|
||||
func (s *CouponService) BatchDeleteCoupons(couponIDs []uint) error {
|
||||
// 检查每个优惠券是否可以删除
|
||||
for _, id := range couponIDs {
|
||||
hasUsers, err := s.couponRepo.CheckCouponHasUsers(id)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if hasUsers {
|
||||
return fmt.Errorf("优惠券ID %d 已被用户领取，无法删除", id)
|
||||
}
|
||||
}
|
||||
|
||||
return s.couponRepo.BatchDelete(couponIDs)
|
||||
}
|
||||
|
||||
// GetCouponStatistics 获取优惠券统计
|
||||
func (s *CouponService) GetCouponStatistics(startTime, endTime time.Time) (map[string]interface{}, error) {
|
||||
ctx := context.Background()
|
||||
|
||||
// 获取总优惠券数
|
||||
totalCoupons, err := s.couponRepo.CountTotalCoupons(ctx)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 获取启用的优惠券数
|
||||
activeCoupons, err := s.couponRepo.CountActiveCoupons(ctx)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 获取总领取数
|
||||
totalReceived, err := s.couponRepo.CountTotalReceived(ctx, startTime, endTime)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 获取总使用数
|
||||
totalUsed, err := s.couponRepo.CountTotalUsed(ctx, startTime, endTime)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 获取各类型优惠券统计
|
||||
typeStats, err := s.couponRepo.GetCouponTypeStats(ctx)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 获取热门优惠券
|
||||
topCoupons, err := s.couponRepo.GetTopCoupons(ctx, 10)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 计算使用率
|
||||
useRate := 0.0
|
||||
if totalReceived > 0 {
|
||||
useRate = float64(totalUsed) / float64(totalReceived) * 100
|
||||
}
|
||||
|
||||
stats := map[string]interface{}{
|
||||
"total_coupons": totalCoupons,
|
||||
"active_coupons": activeCoupons,
|
||||
"total_received": totalReceived,
|
||||
"total_used": totalUsed,
|
||||
"use_rate": fmt.Sprintf("%.2f%%", useRate),
|
||||
"type_stats": typeStats,
|
||||
"top_coupons": topCoupons,
|
||||
}
|
||||
|
||||
return stats, nil
|
||||
}
|
||||
|
||||
// GetUserCouponListForAdmin 获取用户优惠券列表（管理端）
|
||||
func (s *CouponService) GetUserCouponListForAdmin(userID uint, page, pageSize int) ([]model.UserCoupon, int64, error) {
|
||||
return s.couponRepo.GetUserCouponListForAdmin(userID, page, pageSize)
|
||||
}
|
||||
|
||||
// DistributeCoupon 发放优惠券
|
||||
func (s *CouponService) DistributeCoupon(couponID uint, userIDs []uint, distributeAll bool, quantity int, adminID uint) (map[string]interface{}, error) {
|
||||
ctx := context.Background()
|
||||
|
||||
// 验证优惠券是否存在
|
||||
coupon, err := s.couponRepo.GetByID(couponID)
|
||||
if err != nil {
|
||||
return nil, errors.New("优惠券不存在")
|
||||
}
|
||||
|
||||
// 检查优惠券状态
|
||||
if coupon.Status != 1 {
|
||||
return nil, errors.New("优惠券已禁用，无法发放")
|
||||
}
|
||||
|
||||
// 如果是全员发放，获取所有用户ID
|
||||
var targetUserIDs []uint
|
||||
distributeType := "single"
|
||||
if distributeAll {
|
||||
distributeType = "all"
|
||||
// TODO: 从用户表获取所有用户ID
|
||||
// targetUserIDs, err = s.userRepo.GetAllUserIDs()
|
||||
// 暂时返回错误，需要注入 userRepo
|
||||
return nil, errors.New("全员发放功能暂未实现")
|
||||
} else {
|
||||
targetUserIDs = userIDs
|
||||
if len(targetUserIDs) > 1 {
|
||||
distributeType = "batch"
|
||||
}
|
||||
}
|
||||
|
||||
// 记录发放结果
|
||||
successCount := 0
|
||||
failCount := 0
|
||||
|
||||
// 给每个用户发放优惠券
|
||||
for _, userID := range targetUserIDs {
|
||||
for i := 0; i < quantity; i++ {
|
||||
userCoupon := &model.UserCoupon{
|
||||
UserID: userID,
|
||||
CouponID: couponID,
|
||||
Status: 0, // 未使用
|
||||
CreatedAt: time.Now(),
|
||||
UpdatedAt: time.Now(),
|
||||
}
|
||||
|
||||
err := s.couponRepo.CreateUserCoupon(userCoupon)
|
||||
if err != nil {
|
||||
failCount++
|
||||
} else {
|
||||
successCount++
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: 记录发放历史到数据库
|
||||
// 需要创建 coupon_distribute_history 表
|
||||
_ = ctx
|
||||
_ = adminID
|
||||
|
||||
result := map[string]interface{}{
|
||||
"total_count": len(targetUserIDs) * quantity,
|
||||
"success_count": successCount,
|
||||
"fail_count": failCount,
|
||||
"distribute_type": distributeType,
|
||||
}
|
||||
|
||||
return result, nil
|
||||
}
|
||||
|
||||
// GetDistributeHistory 获取发放历史
|
||||
func (s *CouponService) GetDistributeHistory(page, pageSize int) ([]map[string]interface{}, int64, error) {
|
||||
return s.couponRepo.GetDistributeHistory(page, pageSize)
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user