Project idea

This is a part of a private bigger application. Sharing this specific part posed no issue as it doesn’t reveal any sensitive data. The model in which this source code will be implemented is asynchronous. This is a foundational project; the transactions will be managed in the application of the primary project where it will be incorporated. And this one will be responsible for converting the payment from the user to the currency that the user wants to receive the payment.

It will also handle the checkout of the payment, as well as the payment itself. I chose aiohttp for the flexibility it offers in configuration.

This project is divided into 2 parts:

• Checkout:
  • Crypto Checkout (LIGHTNING NETWORK, TRON)
  • Fiat Checkout (PIX | MercadoPago | Brazil Only)
• Coin Conversor (BRL, SATOSHI | REAL/USD)

Checklist

• [] Completed
  • [] Crypto Checkout
    • [] Lightning Network
    • [] Tron
  • [] Fiat Checkout
    • [] PIX
  • Coin Conversor
    • BRL
    • SATOSHI
    • BTC

Code Style

• Modular
• PEP8
• Conversor: Monolithic Structure
• Checkout: Microservices Structure
• POO
• ⚠️conversorpricefetcher have a direct dependence (SOLI[D] violation):
  • 1 its intentional
  • 2 a layer of abstraction would be overkill for this project
  • 3 python does not have native interfaces, so it would be verboselly unnecessary to create one for this project

0. Create a virtual environment

- python -m venv 00_venv_brain (python3 -m venv 00_venv_brain)
- 00_venv_brain\Scripts\activate (00_venv_brain/bin/activate)

1. Install dependencies if necessary

pip install -r requirements.txt

2. Run the project

python main.py

Directory Structure:

- checkout
    - crypto_checkout
        - lightning_network
        - tron
    - pix
- coin_conversor
- core
    - src.py(API base url)
    - .env (api keys)
    - connections
        - lightning_network (nodeless.io: https://nodeless.io/api-docs)
        - tron (tron: https://developers.tron.network/reference/select-network)
        - pix (mercado pago: https://www.mercadopago.com.br/developers/en/reference)