🎨 新增讲师包月功能，优化支付回调

service/app/user.go

@@ -374,3 +374,45 @@ func (u *AppUserService) IsFollowTeacher(userId, teacherId uint) (bool, error) {
 	}
 	return count > 0, nil
 }
+
+func (u *AppUserService) GetVipTeacherList(p common.PageInfo, userId uint) (list []vo.TeacherInfo, total int64, err error) {
+	limit := p.PageSize
+	offset := (p.Page - 1) * p.PageSize
+
+	// 1. 获取所有购买了讲师VIP的讲师ID
+	var vipTeacherIds []uint
+	err = global.GVA_DB.Model(&app.UserTeacherVip{}).Where("user_id = ? and is_expire = 1", userId).Select("id").Scan(&vipTeacherIds).Error
+	if err != nil {
+		global.GVA_LOG.Error("获取用户讲师包月信息失败：", zap.Error(err))
+		return nil, 0, err
+	}
+
+	db := global.GVA_DB.Model(&user.User{}).Where("user_type = ? and id in ?", 2, vipTeacherIds)
+
+	if p.Keyword != "" {
+		db = db.Where("nick_name LIKE ?", "%"+p.Keyword+"%")
+	}
+
+	err = db.Count(&total).Error
+	if err != nil {
+		global.GVA_LOG.Error("查询教师总数失败", zap.Error(err))
+		return nil, 0, err
+	}
+	err = db.Limit(limit).Offset(offset).Select("id, nick_name, avatar,des").Find(&list).Error
+	if err != nil {
+		global.GVA_LOG.Error("查询教师列表失败", zap.Error(err))
+		return nil, 0, err
+	}
+
+	// 获取每个教师的粉丝数
+	for i := range list {
+		followCount, err := u.GetTeacherFansCount(list[i].ID)
+		if err != nil {
+			global.GVA_LOG.Error("查询教师粉丝数失败", zap.Error(err))
+			return nil, 0, err
+		}
+		list[i].Follow = followCount
+	}
+
+	return
+}