ApiPaymentDetailsProvider class

An API-based implementation of PaymentDetailsProvider that fetches payment details from the CoFee payment API.

This implementation:

• Makes authenticated HTTP requests to the CoFee API
• Handles different environments (sandbox/production)
• Provides comprehensive error handling
• Supports request timeouts
• Parses and validates API responses

Example usage:

final provider = ApiPaymentDetailsProvider(
  clientId: 'your-client-id',
);

try {
  final details = await provider.getPaymentDetails(
    'order-123',
    PaymentEnvironment.sandbox,
  );
  print('Payment URL: ${details.getWebUrl}');
} on PaymentException catch (e) {
  print('Error: ${e.message}');
}