Here’s a basic template for your README.md file to document how to use your Chapa.co payment SDK with Nest.js:

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Chapa Payment SDK for Nest.js

Overview

This SDK provides a set of services for integrating Chapa payment gateway into your Nest.js application. It includes functionality for initializing and verifying payments using the Chapa API.

Installation

To install the SDK, add it to your project via npm or yarn:

npm install @your-scope/chapa-payment-sdk
# or
yarn add @your-scope/chapa-payment-sdk
Configuration
Environment Variables: You need to set the following environment variables in your .env file:

env
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CHAPA_API_KEY=your_chapa_api_key
CHAPA_ENVIRONMENT=sandbox
CHAPA_API_KEY: Your Chapa API key.
CHAPA_ENVIRONMENT: Environment to use, either sandbox or production.
Module Setup: Import the ChapaModule in your Nest.js application module:

typescript
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import { Module } from '@nestjs/common';
import { ChapaModule } from '@your-scope/chapa-payment-sdk';

@Module({
  imports: [ChapaModule],
  // other modules, controllers, and providers
})
export class AppModule {}
Usage
Payment Initialization
To initialize a payment, use the ChapaService provided by the SDK:

typescript
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import { Injectable } from '@nestjs/common';
import { ChapaService } from '@your-scope/chapa-payment-sdk';

@Injectable()
export class PaymentService {
  constructor(private readonly chapaService: ChapaService) {}

  async createPayment(paymentData: any) {
    return this.chapaService.initializePayment(paymentData);
  }
}
Payment Verification
To verify a payment, use the ChapaService:

typescript
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import { Injectable } from '@nestjs/common';
import { ChapaService } from '@your-scope/chapa-payment-sdk';

@Injectable()
export class PaymentService {
  constructor(private readonly chapaService: ChapaService) {}

  async verifyPayment(transactionId: string) {
    return this.chapaService.verifyPayment(transactionId);
  }
}
Utility Functions
The SDK also provides utility functions via ChapaUtilsService:

typescript
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import { Injectable } from '@nestjs/common';
import { ChapaUtilsService } from '@your-scope/chapa-payment-sdk';

@Injectable()
export class UtilityService {
  constructor(private readonly chapaUtilsService: ChapaUtilsService) {}

  generateTransactionReference() {
    return this.chapaUtilsService.generateTxRef();
  }

  validateEmail(email: string) {
    return this.chapaUtilsService.validateEmail(email);
  }
}
Controllers
Use the provided controller methods to handle payment-related routes:

typescript
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import { Controller, Post, Body } from '@nestjs/common';
import { ChapaService } from '@your-scope/chapa-payment-sdk';

@Controller('payments')
export class PaymentsController {
  constructor(private readonly chapaService: ChapaService) {}

  @Post('initialize')
  async initializePayment(@Body() paymentData: any) {
    return this.chapaService.initializePayment(paymentData);
  }

  @Post('verify')
  async verifyPayment(@Body('transactionId') transactionId: string) {
    return this.chapaService.verifyPayment(transactionId);
  }
}
License
This project is licensed under the MIT License. See the LICENSE file for details.

Contributing
Feel free to open issues or submit pull requests. Please ensure your contributions adhere to the project's coding standards.

Contact
For any questions or support, please contact [your email].

arduino
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This template includes installation instructions, configuration setup, usage examples, and