Node.js Client

Code example for Node.js

const crypto = require('crypto');

class PaymentEngineClient {
  constructor(apiKey, secretKey, baseUrl = 'https://api.2settle.io') {
    this.apiKey = apiKey;
    this.secretKey = secretKey;
    this.baseUrl = baseUrl;
  }

  sign(method, path, body = {}) {
    const timestamp = Date.now().toString();
    const bodyStr = JSON.stringify(body);
    const bodyHash = crypto.createHash('sha256').update(bodyStr).digest('hex');
    const payload = `${timestamp}|${method}|${path}|${bodyHash}`;
    const hmacKey = crypto.createHash('sha256').update(this.secretKey).digest('hex');
    const signature = crypto.createHmac('sha256', hmacKey).update(payload).digest('hex');
    return { timestamp, signature, bodyStr };
  }

  async request(method, path, body) {
    const { timestamp, signature, bodyStr } = this.sign(method, path, body);

    const response = await fetch(`${this.baseUrl}${path}`, {
      method,
      headers: {
        'Content-Type': 'application/json',
        'X-API-Key': this.apiKey,
        'X-Timestamp': timestamp,
        'X-Signature': signature,
      },
      body: method !== 'GET' ? bodyStr : undefined,
    });

    return response.json();
  }

  // Create any payment type
  async createPayment(options) {
    return this.request('POST', '/v1/payments', options);
  }

  // Get payment by reference
  async getPayment(reference) {
    return this.request('GET', `/v1/payments/${reference}`, {});
  }

  // Claim a gift
  async claimGift(reference, receiver) {
    return this.request('POST', `/v1/payments/gifts/${reference}/claim/confirm`, { receiver });
  }

  // Fulfill a request
  async fulfillRequest(reference, options) {
    return this.request('POST', `/v1/payments/requests/${reference}/fulfill`, options);
  }
}

// Usage
const client = new PaymentEngineClient('pk_xxx', 'sk_xxx');

// Create a transfer
const transfer = await client.createPayment({
  type: 'transfer',
  fiatAmount: 10000,
  fiatCurrency: 'NGN',
  crypto: 'USDT',
  network: 'trc20',
  payer: { chatId: '7389201648' },
  receiver: {
    bankCode: '090405',
    accountNumber: '8012345678',
  },
});

console.log(`Deposit ${transfer.payment.cryptoAmount} USDT to:`);
console.log(transfer.payment.depositAddress);