esewa-pay/dist/esm/index.mjs

A TypeScript SDK for integrating eSewa payments (supports both ESM & CJS)

// src/esewa.ts
import axios from "axios";

// src/utils/crypto.ts
import crypto from "crypto";
function generateHmacSha256(data, secret) {
  return crypto.createHmac("sha256", secret).update(data).digest("base64");
}

// src/config.ts
var API_URLS = {
  development: "https://rc-epay.esewa.com.np/api/epay/main/v2/form",
  production: "https://epay.esewa.com.np/api/epay/main/v2/form"
};
var STATUS_URLS = {
  development: "https://rc.esewa.com.np/api/epay/transaction/status/",
  production: "https://epay.esewa.com.np/api/epay/transaction/status/"
};

// src/esewa.ts
var EsewaClient = class {
  constructor(config) {
    this.config = config;
    this.baseUrl = API_URLS[config.env || "development"];
    this.statusUrl = STATUS_URLS[config.env || "development"];
  }
  generateSignature(total_amount, transaction_uuid, product_code) {
    const data = `total_amount=${total_amount},transaction_uuid=${transaction_uuid},product_code=${product_code}`;
    return generateHmacSha256(data, this.config.secretKey);
  }
  async initiatePayment(params) {
    const signature = this.generateSignature(params.total_amount, params.transaction_uuid, this.config.productCode);
    const payload = {
      amount: params.amount,
      tax_amount: params.tax_amount || "0",
      product_service_charge: params.product_service_charge || "0",
      product_delivery_charge: params.product_delivery_charge || "0",
      total_amount: params.total_amount,
      transaction_uuid: params.transaction_uuid,
      product_code: this.config.productCode,
      success_url: this.config.successUrl,
      failure_url: this.config.failureUrl,
      signed_field_names: "total_amount,transaction_uuid,product_code",
      signature
    };
    const paymentConfig = {
      url: this.baseUrl,
      data: payload,
      headers: {
        "Content-Type": "application/x-www-form-urlencoded"
      },
      responseHandler: (response) => response.request?.res?.responseUrl
    };
    const paymentReq = await axios.post(String(paymentConfig.url), paymentConfig.data, {
      headers: paymentConfig.headers
    });
    const paymentUrl = paymentConfig.responseHandler(paymentReq);
    if (!paymentUrl) {
      throw new Error("Failed to get payment URL");
    }
    return paymentUrl;
  }
  async verifyPayment(data) {
    const decodedData = Buffer.from(data, "base64").toString("utf-8");
    const parsed = JSON.parse(decodedData);
    return parsed;
  }
  async getTransactionStatus(transaction_uuid, total_amount) {
    const url = `${this.statusUrl}?product_code=${this.config.productCode}&total_amount=${total_amount}&transaction_uuid=${transaction_uuid}`;
    const { data } = await axios.get(url);
    return data;
  }
};
export {
  EsewaClient
};