package appstore

import (
	"encoding/base64"
	"encoding/json"
	"fmt"
	"strings"
)

type SignedTansactionInfo struct {
	TransactionId         string `json:"transactionId,omitempty"`
	OriginalTransactionId string `json:"originalTransactionId,omitempty"`
	BundleId              string `json:"bundleId,omitempty"`
	ProductId             string `json:"productId,omitempty"`
	PurchaseDate          int    `json:"purchaseDate,omitempty"`
	OriginalPurchaseDate  int    `json:"originalPurchaseDate,omitempty"`
	Quantity              int    `json:"quantity,omitempty"`
	Type                  string `json:"type,omitempty"`
	InAppOwnershipType    string `json:"inAppOwnershipType,omitempty"`
	SignedDate            int    `json:"signedDate,omitempty"`
	RevocationReason      int    `json:"revocationReason,omitempty"`
	RevocationDate        int    `json:"revocationDate,omitempty"`
	Environment           string `json:"environment,omitempty"`
	TransactionReason     string `json:"transactionReason,omitempty"`
	Storefront            string `json:"storefront,omitempty"`
	StorefrontId          string `json:"storefrontId,omitempty"`
}

// 解析苹果返回的receiptInof
func ParseReceiptInfo(signedPayload string) (*SignedTansactionInfo, error) {
	segments := strings.Split(signedPayload, ".")
	payloadBytes, err := base64.RawURLEncoding.DecodeString(segments[1])
	if err != nil {
		return nil, fmt.Errorf("error decoding payload: %w", err)
	}

	var info SignedTansactionInfo
	if err := json.Unmarshal(payloadBytes, &info); err != nil {
		return nil, fmt.Errorf("error unmarshalling payload: %w", err)
	}

	return &info, nil
}