Blizzard
134 lines
4.3 KiB
Go
134 lines
4.3 KiB
Go
package radio
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import (
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"context"
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"errors"
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"sundynix-go/global"
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common "sundynix-go/model/commom/request"
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"sundynix-go/model/radio"
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"sundynix-go/model/radio/request"
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"sundynix-go/model/system"
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"sundynix-go/utils/uniqueid"
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"sundynix-go/utils/wechat"
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"github.com/wechatpay-apiv3/wechatpay-go/core"
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"github.com/wechatpay-apiv3/wechatpay-go/services/payments/jsapi"
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"gorm.io/gorm"
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)
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type SubscriptionService struct{}
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// GetUserSubscription 获取用户订阅列表
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func (s *SubscriptionService) GetUserSubscription(userId string, info common.PageInfo) ([]radio.RadioSubscription, int64, error) {
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var subscriptions []radio.RadioSubscription
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var total int64
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db := global.DB // 替换为你实际的 GORM 变量
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// 2. 统计该用户订阅的总数 (Status=1 表示订阅中)
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err := db.Model(&radio.RadioSubscription{}).
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Where("user_id = ? AND status = 1", userId).
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Count(&total).Error
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if err != nil {
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return nil, 0, err
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}
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// 3. 执行分页关联查询
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err = db.Model(&radio.RadioSubscription{}).
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Where("user_id = ? AND status = 1", userId).
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Limit(info.PageSize).
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Offset((info.Current-1)*info.PageSize).
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Order("created_at DESC").
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// 级联加载频道及其封面
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Preload("Channel").
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// 关键：子查询过滤——只预加载每个频道 ID 最大的那一条节目
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Preload("Channel.Programs", func(db *gorm.DB) *gorm.DB {
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// 子查询：找到每个频道下 ID 最大的节目（通常 ID 越大代表越新，也可以用 CreatedAt）
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subQuery := db.Table("sundynix_radio_program").
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Select("id").
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Where("status = 1"). // 只找上架的
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Where("created_at = (SELECT MAX(created_at) FROM sundynix_radio_program AS rp WHERE rp.channel_id = sundynix_radio_program.channel_id AND rp.status = 1)")
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// 嵌套预加载：节目里的音频和封面也一并带出来
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return db.Where("id IN (?)", subQuery).Preload("Audio")
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}).
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Find(&subscriptions).Error
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if err != nil {
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return nil, total, err
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}
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return subscriptions, total, err
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}
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// UnlockChannel 解锁频道
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func (s *SubscriptionService) UnlockChannel(userId string, req request.UnlockChannel) (resp *jsapi.PrepayWithRequestPaymentResponse, no string, err error) {
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//1.查询频道
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var channel radio.RadioChannel
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err = global.DB.Where("id = ?", req.ChannelId).First(&channel).Error
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if err != nil {
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return nil, "", err
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}
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var user system.User
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err = global.DB.Where("id = ?", userId).First(&user).Error
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if err != nil || user.OpenId == "" {
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return nil, "", err
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}
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//2.创建一个订单 根据eventType 创建不同的订单
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var price int
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var orderName string
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switch req.EventType {
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case "1":
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price = channel.MonthlyPrice //包月
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orderName = channel.Name + " - 月度订阅"
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case "2":
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price = channel.QuarterlyPrice //包季
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orderName = channel.Name + " - 季度订阅"
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case "3":
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price = channel.AnnualPrice //包年
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orderName = channel.Name + " - 年度订阅"
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default:
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return nil, "", errors.New("无效的订阅类型")
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}
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order := radio.Order{
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Type: 1, //很重要 1订阅 2开通vip
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UserId: userId,
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OutTradeNo: uniqueid.GenOrderNo(),
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ChannelId: req.ChannelId,
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SubscriptionType: req.EventType,
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Amount: price,
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Name: orderName,
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}
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err = global.DB.Create(&order).Error
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if err != nil {
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return nil, "", err
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}
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//4.调用微信api 拉起支付
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payClient, err := wechat.GetWxPayClient()
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if err != nil {
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return nil, "", err
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}
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svc := jsapi.JsapiApiService{Client: payClient}
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result, _, err := svc.PrepayWithRequestPayment(context.Background(),
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jsapi.PrepayRequest{
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Appid: core.String(global.Config.MiniProgram.AppId),
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Mchid: core.String(global.Config.WechatPay.MchId),
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Description: core.String(order.Name),
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OutTradeNo: core.String(order.OutTradeNo),
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//TimeExpire: core.Time(time.Now()), //选填
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//Attach: core.String("自定义数据说明"), //选填
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NotifyUrl: core.String(global.Config.WechatPay.NotifyUrl),
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//GoodsTag: core.String("WXG"), //选填
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//SupportFapiao: core.Bool(false), //选填
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Amount: &jsapi.Amount{
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Currency: core.String("CNY"),
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Total: core.Int64(int64(price)),
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},
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Payer: &jsapi.Payer{
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Openid: core.String(user.OpenId),
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},
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})
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if err != nil {
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return nil, "", err
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}
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return result, order.OutTradeNo, nil
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}
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