package iap

import (
	"encoding/json"
	"errors"
	"io/ioutil"
	"net/http"
	"strings"
)

type GalaxyStoreIAPVerifier struct {
	ItemId             string `json:"itemId"`
	PaymentId          string `json:"paymentId"`
	OrderId            string `json:"orderId"`
	PackageName        string `json:"packageName"`
	ItemName           string `json:"itemName"`
	ItemDesc           string `json:"itemDesc"`
	PurchaseDate       string `json:"purchaseDate"`
	PaymentAmount      string `json:"paymentAmount"`
	Status             string `json:"status"`
	PaymentMethod      string `json:"paymentMethod"`
	Mode               string `json:"mode"`
	ConsumeYN          string `json:"consumeYN"`
	ConsumeDate        string `json:"consumeDate"`
	ConsumeDeviceModel string `json:"consumeDeviceModel"`
	PassThroughParam   string `json:"passThroughParam"`
	CurrencyCode       string `json:"currencyCode"`
	CurrencyUnit       string `json:"currencyUnit"`
	VerificationLog    string
}

func (verifer *GalaxyStoreIAPVerifier) Verify(purchaseId string, paymentId string, developerPayload string, itemId string, packageName string) (bool, error) {

	client := &http.Client{}
	req, err := http.NewRequest("GET", "https://iap.samsungapps.com/iap/v6/receipt?purchaseID="+purchaseId, nil)
	if err != nil {
		return false, err
	}
	req.Header.Add("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		return false, err
	}

	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return false, err
	}

	json.Unmarshal(body, verifer)

	verifer.VerificationLog = string(body)

	if verifer.Status != "success" {
		return false, errors.New("Status is wrong:" + verifer.Status)
	}

	if verifer.ItemId != itemId {
		return false, errors.New("itemId is different")
	}

	if verifer.PackageName != packageName {
		return false, errors.New("packageName is different")
	}

	if !strings.EqualFold(verifer.PassThroughParam, developerPayload) {
		return false, errors.New("developerPayload is different : " + verifer.PassThroughParam + "/" + developerPayload)
	}

	if verifer.PaymentId != paymentId {
		return false, errors.New("paymentId is different")
	}

	return true, nil
}

//  Owned Item - mItemId: kd_currency_gold_75
//  Owned Item - mItemName: Gold x75
//  Owned Item - mItemPrice: 1300.000000
//  Owned Item - mItemPriceString: ￦1,300
//  Owned Item - mCurrencyUnit: ￦
//  Owned Item - mCurrencyCode: KRW
//  Owned Item - mItemDesc: 75 Gold
//  Owned Item - mPaymentId: TPMTID20240208KR32371566
//  Owned Item - mPurchaseId: 34c50c9677e8e837e7b7a6eaac37a385fb7e4b36437820825bc7d824647c6aa7
//  Owned Item - mPurchaseDate: -2147483648
//  Owned Item - mPassThroughParam: testpayload

// {
//     "itemId": "kd_currency_gold_75",
//     "paymentId": "TPMTID20240208KR32367386",
//     "orderId": "P20240208KR32367386",
//     "packageName": "com.yjmgames.kingdom.gal",
//     "itemName": "Gold x75",
//     "itemDesc": "75 Gold",
//     "purchaseDate": "2024-02-08 02:33:24",
//     "paymentAmount": "1300.0",
//     "status": "success",
//     "paymentMethod": "Credit Card",
//     "mode": "TEST",
//     "consumeYN": "Y",
//     "consumeDate": "2024-02-08 02:52:10",
//     "consumeDeviceModel": "SM-S918N",
//     "passThroughParam": "testpayload",
//     "currencyCode": "KRW",
//     "currencyUnit": "￦"
// }