feat(appleIAP): 实现苹果应用内购买通知处理逻辑

添加苹果IAP通知处理功能，包括解析和验证JWS签名、处理交易状态变更
新增订单号字段用于关联订单处理
实现交易记录的创建和更新逻辑
处理订阅状态的变更和过期时间计算

internal/logic/notify/appleIAPNotifyLogic.go

@@ -0,0 +1,78 @@
+package notify
+
+import (
+	"context"
+
+	iapmodel "github.com/perfect-panel/server/internal/model/iap/apple"
+	"github.com/perfect-panel/server/internal/svc"
+	iapapple "github.com/perfect-panel/server/pkg/iap/apple"
+	"github.com/perfect-panel/server/pkg/logger"
+	"gorm.io/gorm"
+)
+
+type AppleIAPNotifyLogic struct {
+	logger.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+func NewAppleIAPNotifyLogic(ctx context.Context, svcCtx *svc.ServiceContext) *AppleIAPNotifyLogic {
+	return &AppleIAPNotifyLogic{
+		Logger: logger.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *AppleIAPNotifyLogic) Handle(signedPayload string) error {
+	txPayload, _, err := iapapple.VerifyNotificationSignedPayload(signedPayload)
+	if err != nil {
+		return err
+	}
+	return l.svcCtx.DB.Transaction(func(db *gorm.DB) error {
+		var existing *iapmodel.Transaction
+		existing, _ = iapmodel.NewModel(l.svcCtx.DB, l.svcCtx.Redis).FindByOriginalId(l.ctx, txPayload.OriginalTransactionId)
+		if existing == nil || existing.Id == 0 {
+			rec := &iapmodel.Transaction{
+				UserId:                0,
+				OriginalTransactionId: txPayload.OriginalTransactionId,
+				TransactionId:         txPayload.TransactionId,
+				ProductId:             txPayload.ProductId,
+				PurchaseAt:            txPayload.PurchaseDate,
+				RevocationAt:          txPayload.RevocationDate,
+				JWSHash:               "",
+			}
+			if e := db.Model(&iapmodel.Transaction{}).Create(rec).Error; e != nil {
+				return e
+			}
+		} else {
+			if txPayload.RevocationDate != nil {
+				if e := db.Model(&iapmodel.Transaction{}).
+					Where("original_transaction_id = ?", txPayload.OriginalTransactionId).
+					Update("revocation_at", txPayload.RevocationDate).Error; e != nil {
+					return e
+				}
+			}
+		}
+		pm, _ := iapapple.ParseProductMap(l.svcCtx.Config.Site.CustomData)
+		m := pm.Items[txPayload.ProductId]
+		token := "iap:" + txPayload.OriginalTransactionId
+		sub, e := l.svcCtx.UserModel.FindOneSubscribeByToken(l.ctx, token)
+		if e == nil && sub != nil && sub.Id != 0 {
+			if txPayload.RevocationDate != nil {
+				sub.Status = 3
+				t := *txPayload.RevocationDate
+				sub.FinishedAt = &t
+				sub.ExpireTime = t
+			} else if m.DurationDays > 0 {
+				exp := iapapple.CalcExpire(txPayload.PurchaseDate, m.DurationDays)
+				sub.ExpireTime = exp
+				sub.Status = 1
+			}
+			if e := l.svcCtx.UserModel.UpdateSubscribe(l.ctx, sub, db); e != nil {
+				return e
+			}
+		}
+		return nil
+	})
+}