core_purchase.go

// Copyright 2018 The Nakama Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package server

import (
	"bytes"
	"context"
	"database/sql"
	"encoding/base64"
	"encoding/gob"
	"errors"
	"fmt"
	"net/http"
	"strconv"
	"strings"
	"time"

	"github.com/gofrs/uuid"
	"github.com/heroiclabs/nakama-common/api"
	"github.com/heroiclabs/nakama/v3/iap"
	"github.com/jackc/pgtype"
	"go.uber.org/zap"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
	"google.golang.org/protobuf/types/known/timestamppb"
)

var ErrPurchasesListInvalidCursor = errors.New("purchases list cursor invalid")

var httpc = &http.Client{Timeout: 5 * time.Second}

func ValidatePurchasesApple(ctx context.Context, logger *zap.Logger, db *sql.DB, userID uuid.UUID, password, receipt string, persist bool) (*api.ValidatePurchaseResponse, error) {
	validation, raw, err := iap.ValidateReceiptApple(ctx, httpc, receipt, password)
	if err != nil {
		if err != context.Canceled {
			var vErr *iap.ValidationError
			if errors.As(err, &vErr) {
				logger.Error("Error validating Apple receipt", zap.Error(vErr.Err), zap.Int("status_code", vErr.StatusCode), zap.String("payload", vErr.Payload))
				return nil, vErr
			} else {
				logger.Error("Error validating Apple receipt", zap.Error(err))
			}
		}
		return nil, err
	}

	if validation.Status != iap.AppleReceiptIsValid {
		if validation.IsRetryable == true {
			return nil, status.Error(codes.Unavailable, "Apple IAP verification is currently unavailable. Try again later.")
		}
		return nil, status.Error(codes.FailedPrecondition, fmt.Sprintf("Invalid Receipt. Status: %d", validation.Status))
	}

	env := api.StoreEnvironment_PRODUCTION
	if validation.Environment == iap.AppleSandboxEnvironment {
		env = api.StoreEnvironment_SANDBOX
	}