[FEAT] Plan subscription - PAYSTACK

[Uzo-Felix]

Payment Functionality Implementation using Paystack

Description

Implement payment functionality using Paystack to allow both individual users and organizations to make payments through our platform. This feature will handle the entire payment process, including initiating and processing payments.

Acceptance Criteria

• The API should be accessible at POST /api/v1/payments/paystack/initiate.
• The endpoint is accessible only to authenticated users.
• Only users with appropriate permissions can initiate payments.
• Sanitize and validate all input data to prevent injection attacks.
• Data is transmitted over HTTPS, and sensitive information is handled securely.
• Write unit and integration tests for the payments logic.
• Provide clear and comprehensive documentation for the endpoint, including request and response formats, error codes, and usage examples.

Request Examples

POST /api/v1/payments/paystack [PROTECTED]

Request Body:

{
   "organization_id": "string",
   "plan_id": "string",
   "full_name": "string",
   "billing_option": "monthly | yearly",
   "redirect_url": "http://boilerplate.com/setting"
}

Response Examples

Success Response

Status Code: 200 OK

{
   "status": 200,
   "message": "Payment initiated successfully",
   "data": {
      "payment_url": "https://example.com/checkout?paymentId=pay_abc123"
   }
}

Failure Responses

1. Validation Error

   • Status Code: 400 Bad Request

   {
     "status": 400,
     "message": "Validation error: amount must be a positive number"
   }

2. Authentication Error

   • Status Code: 401 Unauthorized

   {
     "status": 401,
     "message": "Authentication required"
   }

3. Authorization Error

   • Status Code: 403 Forbidden

   {
     "status": 403,
     "message": "You do not have permission to initiate this payment"
   }

4. Server Error

   • Status Code: 500 Internal Server Error

   {
     "status": 500,
     "message": "An unexpected error occurred. Please try again later."
   }

Data Validation

Input Validation

• Confirm that all fields are provided and valid.
• Example: If user_id is invalid or missing, return a 400 status code with an error message.

{
  "status": 400,
  "message": "Validation error: user_id must be provided"
}

Authentication and Authorization

Authentication

• Verify that the user is authenticated before allowing access to the endpoint.
• Example: Use middleware to check for a valid authentication token.

Authorization

• Ensure that only authorized users can make payments.
• Example: Check user roles or permissions to confirm authorization.

Error Handling

Error Responses

• Define error responses for common failure scenarios.
• Example: If Stripe credentials are invalid, return a 500 status code with an error message.

{
  "status": 500,
  "message": "Payment Initialization Failed: Failed to initialize payment with Stripe: Invalid API key"
}

Documentation

API Documentation

• Ensure that API documentation is updated to include details about the new endpoint, request/response formats, error handling, and authentication requirements.

Testing Requirements

Unit Tests

• Write unit tests to validate input data and payment logic.

Integration Tests

• Ensure that end-to-end functionality is tested with integration tests.