maps-saas/apps/api/dist/billing/providers/binance.provider.js

"use strict";
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var BinanceProvider_1;
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BinanceProvider = void 0;
const common_1 = require("@nestjs/common");
const config_1 = require("@nestjs/config");
const axios_1 = __importDefault(require("axios"));
const crypto = __importStar(require("crypto"));
let BinanceProvider = BinanceProvider_1 = class BinanceProvider {
    configService;
    logger = new common_1.Logger(BinanceProvider_1.name);
    apiUrl = 'https://bpay.binanceapi.com/binancepay/openapi/v2/order';
    constructor(configService) {
        this.configService = configService;
    }
    get apiKey() {
        return this.configService.get('BINANCE_PAY_API_KEY') || '';
    }
    get secretKey() {
        return this.configService.get('BINANCE_PAY_SECRET_KEY') || '';
    }
    generateSignature(timestamp, nonce, body) {
        const payload = timestamp + '\n' + nonce + '\n' + JSON.stringify(body) + '\n';
        return crypto
            .createHmac('sha512', this.secretKey)
            .update(payload)
            .digest('hex')
            .toUpperCase();
    }
    async createOrder(tenantId, amount, plan) {
        this.logger.log(`Creating Binance Pay order for ${tenantId} - ${plan}`);
        if (!this.apiKey || !this.secretKey) {
            this.logger.error('Binance Pay API keys are not configured');
            throw new common_1.InternalServerErrorException('Payment provider is not configured properly');
        }
        const nonce = crypto.randomBytes(16).toString('hex');
        const timestamp = Date.now().toString();
        const merchantTradeNo = `txn_${Date.now()}_${Math.floor(Math.random() * 10000)}`;
        const body = {
            env: {
                terminalType: 'WEB',
            },
            merchantTradeNo: merchantTradeNo,
            orderAmount: amount,
            currency: 'USDT',
            goods: {
                goodsType: '01',
                goodsCategory: 'Z000',
                referenceGoodsId: plan,
                goodsName: `${plan} Plan Subscription`,
                goodsDetail: `Subscription to ${plan} plan for Maps SaaS`,
            },
            passThroughInfo: JSON.stringify({ tenantId, plan }),
            returnUrl: `https://map-dashboard.intaleqapp.com/dashboard.html#billing`,
        };
        const signature = this.generateSignature(timestamp, nonce, body);
        try {
            const response = await axios_1.default.post(this.apiUrl, body, {
                headers: {
                    'Content-Type': 'application/json',
                    'BinancePay-Timestamp': timestamp,
                    'BinancePay-Nonce': nonce,
                    'BinancePay-Certificate-SN': this.apiKey,
                    'BinancePay-Signature': signature,
                },
            });
            if (response.data && response.data.status === 'SUCCESS') {
                return {
                    checkoutUrl: response.data.data.checkoutUrl,
                    orderId: merchantTradeNo,
                    prepayId: response.data.data.prepayId,
                };
            }
            else {
                this.logger.error(`Binance API Error: ${JSON.stringify(response.data)}`);
                throw new common_1.InternalServerErrorException('Failed to create Binance order');
            }
        }
        catch (error) {
            this.logger.error(`Error communicating with Binance API: ${error.message}`);
            throw new common_1.InternalServerErrorException('Failed to communicate with payment provider');
        }
    }
    verifySignature(timestamp, nonce, signature, payloadBody) {
        const payload = timestamp + '\n' + nonce + '\n' + JSON.stringify(payloadBody) + '\n';
        const expectedSignature = crypto
            .createHmac('sha512', this.secretKey)
            .update(payload)
            .digest('hex')
            .toUpperCase();
        try {
            return crypto.timingSafeEqual(Buffer.from(signature || ''), Buffer.from(expectedSignature));
        }
        catch (e) {
            return false;
        }
    }
};
exports.BinanceProvider = BinanceProvider;
exports.BinanceProvider = BinanceProvider = BinanceProvider_1 = __decorate([
    (0, common_1.Injectable)(),
    __metadata("design:paramtypes", [typeof (_a = typeof config_1.ConfigService !== "undefined" && config_1.ConfigService) === "function" ? _a : Object])
], BinanceProvider);
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