LatinAmericanPaymentGateway - Progress Report¶

Sprint Progress¶

✅ Sprint 1: Foundations - COMPLETED¶

Date: February 18, 2026

Completed: - ✅ Created package directory structure (Clean Architecture) - ✅ Defined core enums: Country, Currency, PaymentMethodType, PaymentStatus - ✅ Created entities: Money, CardToken, PaymentResult, RefundResult, PaymentGatewayConfiguration - ✅ Implemented interface: LatinAmericanPaymentGateway - ✅ Created factory and registry services - ✅ Implemented OnvoPayPaymentGateway (Costa Rica) - ✅ Implemented TilopayPaymentGateway (Costa Rica) - ✅ Static analysis: No errors, only minor infos

Files Created (15):

lib/core/payments/
├── data/gateways/costa_rica/
│   ├── onvo_pay_payment_gateway.dart
│   └── tilopay_payment_gateway.dart
├── domain/
│   ├── entities/ (5 files)
│   ├── enums/ (4 files)
│   └── interfaces/ (1 file)
├── services/
│   ├── payment_gateway_factory.dart
│   └── payment_gateway_registry.dart
└── latam_payments.dart

✅ Sprint 2: Colombia (Wompi) - COMPLETED¶

Date: February 18, 2026

Completed: - ✅ Researched Wompi API documentation - ✅ Found existing Flutter SDK: wompi_payment_colombia v3.0.0 on pub.dev - ✅ Found official GitHub: https://github.com/reyesmfabian/wompi_payment - ✅ Implemented WompiPaymentGateway with: - Credit/Debit Cards - PSE (Pagos Seguros en Línea) - Nequi (Digital wallet) - ✅ Added support for Colombia AND Panama - ✅ Added Acceptance Token flow (required by Wompi) - ✅ Added Integrity Key support - ✅ Added Business Prefix support - ✅ Added getPseBanks() method - ✅ Added verifyWebhookSignature() method

Files Created (1):

lib/core/payments/data/gateways/colombia/
└── wompi_payment_gateway.dart

Key Wompi Features Implemented: 1. Acceptance Token - Required before any payment (Wompi requirement) 2. Integrity Key - For transaction verification 3. Business Prefix - For payment references 4. PSE Flow - Bank transfer with async payment URL 5. Nequi Flow - Digital wallet with phone number 6. Card Payments - Tokenization + payment 7. Webhooks - Signature verification

Research Findings: - Wompi Official Docs: https://docs.wompi.co - Existing SDK: wompi_payment_colombia (unofficial but functional) - Supported Methods: - Colombia: Cards, PSE, Nequi - Panama: Cards, ACH - Currencies: COP, PAB, USD - Key Requirement: Acceptance token must be obtained before payments

✅ Sprint 3: Mexico (OpenPay, Conekta) - COMPLETED¶

Date: February 18, 2026

Completed: - ✅ Researched OpenPay and Conekta APIs - ✅ Found existing Flutter packages: - OpenPay: openpay_bbva, openpay2, kiwi-bop/openpay (GitHub) - Conekta: conekta (server-side), conekta_component (UI), conekta_flutter - ✅ Implemented OpenpayPaymentGateway with: - Credit/Debit Cards (tokenization) - SPEI (bank transfer) - OXXO (cash payments) - ✅ Implemented ConektaPaymentGateway with: - Credit/Debit Cards - SPEI (bank transfer via checkout) - OXXO (cash via checkout) - ✅ Updated PaymentGatewayFactory with new gateways - ✅ Static analysis: No errors, only warnings/infos

Files Created (2):

lib/core/payments/data/gateways/mexico/
├── openpay_payment_gateway.dart
└── conekta_payment_gateway.dart

Key Implementation Details:

OpenPay: - Uses merchant ID from extraConfig - Card tokenization via /tokens endpoint - Direct charge creation via /charges - Supports OXXO and SPEI via payment_method type

Conekta: - Order-based payment flow - Checkout-based for cash/bank transfers - Card tokenization via /tokens endpoint - Versioned API (v2.1.0)

Research Findings: - OpenPay Docs: https://documents.openpay.mx/en/api/ - Conekta Docs: https://developers.conekta/ - Supported Methods: Cards, SPEI, OXXO - Currencies: MXN, USD - Both require private key for server-side operations - Both support 3D Secure for cards

✅ Sprint 4: Brazil (Mercado Pago) - COMPLETED¶

Date: February 18, 2026

Completed: - ✅ Researched Mercado Pago Brazil API - ✅ Found existing Flutter packages: - mercadopago_transparent - Full SDK - mp_integration - SDK module - mercadopago_ducos - Server-side implementation - pix_bb - Banco do Brasil PIX specific - ✅ Implemented MercadoPagoPaymentGateway with: - Credit/Debit Cards - PIX (instant payments, QR code) - Boleto bancário - ✅ Added getPixQrCode() method - ✅ Updated PaymentGatewayFactory with new gateway - ✅ Static analysis: No errors, only minor warnings

Files Created (1):

lib/core/payments/data/gateways/brazil/
└── mercado_pago_payment_gateway.dart

Key Implementation Details:

Mercado Pago Brazil: - Order-based payment flow (v1/orders) - PIX via payment_method_id: 'pix' - Boleto via payment_method_id: 'bolbradesco' - X-Idempotency-Key header required - Returns QR code and ticket_url for PIX

Research Findings: - Mercado Pago Docs: https://www.mercadopago.com.br/developers/ - Supported Methods: Cards, PIX, Boleto - Currencies: BRL, USD - PIX: Instant payments, QR code, copy-paste code - Note: Official Flutter SDK deprecated, recommends WebView checkout (Checkout Bricks)

🚧 Sprint 5: Package Release - IN PROGRESS¶

Date: February 18, 2026

Completed: - ✅ Created CHANGELOG.md - ✅ Added unit tests for entities and factory (52 tests passing) - ✅ Tests cover: Country, Currency, PaymentMethodType, PaymentStatus enums - ✅ Tests cover: Money, CardToken, PaymentResult, PaymentGatewayConfiguration entities - ✅ Tests cover: PaymentGatewayFactory create, availableFor, nativeMethodsFor, supportedMethodsFor

Pending: - [ ] Extract to separate repository - [ ] Create example app - [ ] Publish to pub.dev as latam_payments: ^0.1.0 - [ ] Add widget tests for payment forms - [ ] Add integration tests for payment flows - [ ] Add mobile testing with Flutter MCP

📁 Current File Structure¶

lib/core/payments/
├── data/gateways/
│   ├── costa_rica/
│   │   ├── onvo_pay_payment_gateway.dart
│   │   └── tilopay_payment_gateway.dart
│   ├── colombia/
│   │   └── wompi_payment_gateway.dart
│   ├── mexico/
│   │   ├── openpay_payment_gateway.dart
│   │   └── conekta_payment_gateway.dart
│   └── brazil/
│       └── mercado_pago_payment_gateway.dart
├── domain/
│   ├── entities/
│   │   ├── card_token.dart
│   │   ├── money.dart
│   │   ├── payment_gateway_configuration.dart
│   │   ├── payment_result.dart
│   │   └── refund_result.dart
│   ├── enums/
│   │   ├── country.dart
│   │   ├── currency.dart
│   │   ├── payment_method_type.dart
│   │   └── payment_status.dart
│   └── interfaces/
│       └── latin_american_payment_gateway.dart
├── services/
│   ├── payment_gateway_factory.dart
│   └── payment_gateway_registry.dart
└── latam_payments.dart

🔧 Usage Example¶

import 'package:altrupets/core/payments/latam_payments.dart';

// Create gateway
final gateway = PaymentGatewayFactory.create(
  type: PaymentGatewayType.wompi,
  config: PaymentGatewayConfiguration(
    publicKey: 'pub_test_...',
    sandbox: true,
    extraConfig: {
      'integrityKey': 'integ_...',
      'businessPrefix': 'MY-',
    },
  ),
);

// Initialize (fetches acceptance token)
await gateway.initialize(config);

// Tokenize card
final token = await gateway.tokenizeCard(
  cardNumber: '4242424242424242',
  expiryMonth: '12',
  expiryYear: '2025',
  cvv: '123',
  cardHolderName: 'John Doe',
);

// Process payment (card)
final result = await gateway.processPayment(
  amount: 50000, // COP
  currency: Currency.cop,
  method: PaymentMethodType.creditCard,
  description: 'Purchase',
  metadata: {'card_token': token.id},
);

// For PSE - get payment URL and redirect user
if (result.receiptUrl != null) {
  // Redirect to bank
}

📊 Analysis & Tests Results¶

dart analyze lib/core/payments/
✅ 0 errors
⚠️  2 warnings (unused fields - expected, for future use)
ℹ️  Multiple infos (style recommendations)

flutter test test/core/payments/
✅ 52 tests passing
- payments_entities_test.dart: 29 tests
- payment_gateway_factory_test.dart: 23 tests

🌍 Supported Countries & Methods¶

📝 Notes¶

• All gateways use PaymentGateway suffix to avoid naming conflicts
• Package-ready structure for future extraction to pub.dev
• Follows Clean Architecture with domain/data/presentation layers
• PCI-compliant: card tokenization happens on gateway side
• Multi-country support built into core interface

Last Updated: February 18, 2026 Version: 0.1.0 Status: Sprint 5 In Progress (Unit Tests Added)