Ercaspay Angular Library

Ercaspay Angular Library provides a simple and customizable way to integrate the Ercaspay checkout button into Angular 14+ standalone applications. It allows developers to initiate payments with ease.

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Table of Contents

• Ercaspay Angular Library
  • Table of Contents
  • 1. Installation
  • 2. Setup and Initialization
    • src/app/app.config.ts
    • Explanation:
  • 3. Usage Example
    • src/app/app.component.ts
    • src/app/app.component.html
    • Explanation:
  • 4. Configuration Options
  • 5. How It Works
  • 6. Styling
  • 7. Event Handling
  • Conclusion

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1. Installation

To use the library, first install it using npm:

npm install @decodeblock/ercaspay-angular

• Why: This command downloads the library into your project, making it available for import and usage.

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2. Setup and Initialization

To use Ercaspay, you need to initialize the service with your public key and secret key. This is done in your appConfig file using Angular's providers.

src/app/app.config.ts

import { ApplicationConfig } from '@angular/core';
import { provideRouter } from '@angular/router';
import { provideErcaspay } from '@decodeblock/ercaspay-angular';
import { provideHttpClient } from '@angular/common/http';

export const appConfig: ApplicationConfig = {
  providers: [
    provideRouter([]), // Provide app routes
    provideErcaspay(   
      'ECRS-TEST-SK-yourSecretKey', // Replace with your Ercaspay Secret Key
      'ECRS-TEST-AK-yourApiKey'     // Replace with your Ercaspay API Key
    ),
    provideHttpClient() // Provide HTTP client to make API requests
  ],
};

Explanation:

1. provideErcaspay(): Initializes the Ercaspay library with your credentials.
2. provideHttpClient(): Required because the library uses HTTP to communicate with the Ercaspay API.
3. Why: Initialization ensures that the Ercaspay service is globally available for use across your app.

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3. Usage Example

You can use the Ercaspay checkout button directly in your component.

src/app/app.component.ts

import { Component, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { ErcaspayCheckoutButtonComponent } from '@decodeblock/ercaspay-angular';

@Component({
  selector: 'app-root',
  standalone: true,
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  imports: [ErcaspayCheckoutButtonComponent],
  templateUrl: './app.component.html',
})
export class AppComponent {
  options = {
    amount: 10000, // Amount in kobo (10000 = 100 NGN)
    customerEmail: 'user@mail.com',
    paymentReference: this.generateUniqueReference(),
    paymentMethods: 'card,bank-transfer,ussd,qrcode',
    customerName: 'John Doe',
    currency: 'NGN',
    redirectUrl: 'http://localhost:4200/',
  };

  onSuccess(event: any) {
    console.log('Payment Success:', event);
  }

  onFailure(event: any) {
    console.log('Payment Failed:', event);
  }

  generateUniqueReference(): string {
    const timestamp = Date.now();
    const randomNum = Math.floor(Math.random() * 1000000);
    return `ref_${timestamp}_${randomNum}`;
  }
}

src/app/app.component.html

<div class="mt-3">
  <lib-ercaspay-checkout-button
    [buttonClass]="'btn btn-primary'"
    [ercaspayOptions]="options"
    (paymentSuccess)="onSuccess($event)"
    (paymentFailure)="onFailure($event)"
  >
    Pay with Ercaspay
  </lib-ercaspay-checkout-button>
</div>

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Explanation:

1. [buttonClass]: Passes custom button classes for styling (e.g., btn btn-primary for Bootstrap).
2. [ercaspayOptions]: Defines the payment options (amount, email, reference, etc.).
3. (paymentSuccess) and (paymentFailure): Handles events emitted after payment success or failure.
4. generateUniqueReference(): Ensures every payment has a unique reference.

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4. Configuration Options

Here are the options you can pass into the Ercaspay button component:

Option	Type	Required	Description
amount	number	Yes	Payment amount in kobo (e.g., 10000 = 100 NGN).
customerEmail	string	Yes	Email address of the customer.
paymentReference	string	Yes	Unique payment reference for tracking.
paymentMethods	string	No	Payment methods (e.g., card,bank-transfer).
customerName	string	No	Name of the customer.
currency	string	Yes	Currency code (e.g., NGN for Naira).
redirectUrl	string	No	URL to redirect the user after payment.

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5. How It Works

1. Initialization:

   • The library is initialized with your API keys using provideErcaspay() in the appConfig.
   • It allows the library to communicate securely with the Ercaspay API.

2. Checkout Button:

   • lib-ercaspay-checkout-button renders a button with customizable styles.
   • On click, the button triggers the Ercaspay checkout process using the provided options.

3. Events:

   • The library emits paymentSuccess or paymentFailure events after the transaction completes.
   • You can listen to these events to handle the response accordingly.

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6. Styling

You can pass any custom class to the button using [buttonClass].

Example using Bootstrap classes:

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: 0.3rem;
  font-size: 1rem;
}

.btn-primary {
  color: white;
  background-color: #0d6efd;
  border-color: #0d6efd;
}

.btn-primary:hover {
  background-color: #0b5ed7;
}

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7. Event Handling

You can listen for these two events:

1. paymentSuccess:

   • Triggered when the payment succeeds.
   • Example:

     onSuccess(event: any) {
       console.log('Payment Success:', event);
     }

2. paymentFailure:

   • Triggered when the payment fails.
   • Example:

     onFailure(event: any) {
       console.log('Payment Failed:', event);
     }

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Conclusion

This library makes it simple to integrate Ercaspay into your Angular standalone application. By following the steps above, you can easily initiate payments, customize the checkout button, and handle payment events.

Note: This library is far from complete, and more functionalities will be added in more recent versions.

For any issues or questions, please contact support or open a GitHub issue.