first commit: one-api base code + SAAS plan document

model/redemption.go

@@ -0,0 +1,126 @@
+package model
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"gorm.io/gorm"
+
+	"github.com/songquanpeng/one-api/common"
+	"github.com/songquanpeng/one-api/common/helper"
+)
+
+const (
+	RedemptionCodeStatusEnabled  = 1 // don't use 0, 0 is the default value!
+	RedemptionCodeStatusDisabled = 2 // also don't use 0
+	RedemptionCodeStatusUsed     = 3 // also don't use 0
+)
+
+type Redemption struct {
+	Id           int    `json:"id"`
+	UserId       int    `json:"user_id"`
+	Key          string `json:"key" gorm:"type:char(32);uniqueIndex"`
+	Status       int    `json:"status" gorm:"default:1"`
+	Name         string `json:"name" gorm:"index"`
+	Quota        int64  `json:"quota" gorm:"bigint;default:100"`
+	CreatedTime  int64  `json:"created_time" gorm:"bigint"`
+	RedeemedTime int64  `json:"redeemed_time" gorm:"bigint"`
+	Count        int    `json:"count" gorm:"-:all"` // only for api request
+}
+
+func GetAllRedemptions(startIdx int, num int) ([]*Redemption, error) {
+	var redemptions []*Redemption
+	var err error
+	err = DB.Order("id desc").Limit(num).Offset(startIdx).Find(&redemptions).Error
+	return redemptions, err
+}
+
+func SearchRedemptions(keyword string) (redemptions []*Redemption, err error) {
+	err = DB.Where("id = ? or name LIKE ?", keyword, keyword+"%").Find(&redemptions).Error
+	return redemptions, err
+}
+
+func GetRedemptionById(id int) (*Redemption, error) {
+	if id == 0 {
+		return nil, errors.New("id 为空！")
+	}
+	redemption := Redemption{Id: id}
+	var err error = nil
+	err = DB.First(&redemption, "id = ?", id).Error
+	return &redemption, err
+}
+
+func Redeem(ctx context.Context, key string, userId int) (quota int64, err error) {
+	if key == "" {
+		return 0, errors.New("未提供兑换码")
+	}
+	if userId == 0 {
+		return 0, errors.New("无效的 user id")
+	}
+	redemption := &Redemption{}
+
+	keyCol := "`key`"
+	if common.UsingPostgreSQL {
+		keyCol = `"key"`
+	}
+
+	err = DB.Transaction(func(tx *gorm.DB) error {
+		err := tx.Set("gorm:query_option", "FOR UPDATE").Where(keyCol+" = ?", key).First(redemption).Error
+		if err != nil {
+			return errors.New("无效的兑换码")
+		}
+		if redemption.Status != RedemptionCodeStatusEnabled {
+			return errors.New("该兑换码已被使用")
+		}
+		err = tx.Model(&User{}).Where("id = ?", userId).Update("quota", gorm.Expr("quota + ?", redemption.Quota)).Error
+		if err != nil {
+			return err
+		}
+		redemption.RedeemedTime = helper.GetTimestamp()
+		redemption.Status = RedemptionCodeStatusUsed
+		err = tx.Save(redemption).Error
+		return err
+	})
+	if err != nil {
+		return 0, errors.New("兑换失败，" + err.Error())
+	}
+	RecordLog(ctx, userId, LogTypeTopup, fmt.Sprintf("通过兑换码充值 %s", common.LogQuota(redemption.Quota)))
+	return redemption.Quota, nil
+}
+
+func (redemption *Redemption) Insert() error {
+	var err error
+	err = DB.Create(redemption).Error
+	return err
+}
+
+func (redemption *Redemption) SelectUpdate() error {
+	// This can update zero values
+	return DB.Model(redemption).Select("redeemed_time", "status").Updates(redemption).Error
+}
+
+// Update Make sure your token's fields is completed, because this will update non-zero values
+func (redemption *Redemption) Update() error {
+	var err error
+	err = DB.Model(redemption).Select("name", "status", "quota", "redeemed_time").Updates(redemption).Error
+	return err
+}
+
+func (redemption *Redemption) Delete() error {
+	var err error
+	err = DB.Delete(redemption).Error
+	return err
+}
+
+func DeleteRedemptionById(id int) (err error) {
+	if id == 0 {
+		return errors.New("id 为空！")
+	}
+	redemption := Redemption{Id: id}
+	err = DB.Where(redemption).First(&redemption).Error
+	if err != nil {
+		return err
+	}
+	return redemption.Delete()
+}