1de1cdb14f
Add promo code models and APIs, persist selected promo codes on top-up orders, and apply bonus quota idempotently when payments complete.
42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
package model
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import "time"
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type PromoCodeUsage struct {
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Id int `json:"id" gorm:"primaryKey;autoIncrement"`
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PromoCodeId int `json:"promo_code_id" gorm:"not null;index:idx_promo_code_user,unique"`
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UserId int `json:"user_id" gorm:"not null;index:idx_promo_code_user,unique"`
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UsedAt time.Time `json:"used_at" gorm:"not null"`
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}
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func (PromoCodeUsage) TableName() string {
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return "promo_code_usages"
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}
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func (u *PromoCodeUsage) Insert() error {
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return DB.Create(u).Error
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}
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func GetPromoCodeUsageByCodeAndUser(promoCodeId int, userId int) (*PromoCodeUsage, error) {
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var usage PromoCodeUsage
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err := DB.Where("promo_code_id = ? AND user_id = ?", promoCodeId, userId).First(&usage).Error
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return &usage, err
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}
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func GetPromoCodeUsages(page int, pageSize int, promoCodeId int) ([]PromoCodeUsage, int64, error) {
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var usages []PromoCodeUsage
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var total int64
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query := DB.Model(&PromoCodeUsage{}).Where("promo_code_id = ?", promoCodeId)
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if err := query.Count(&total).Error; err != nil {
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return nil, 0, err
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}
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if page < 1 {
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page = 1
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}
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if pageSize < 1 {
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pageSize = 20
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}
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err := query.Order("id DESC").Offset((page - 1) * pageSize).Limit(pageSize).Find(&usages).Error
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return usages, total, err
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}
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