Wallet-API

Overview

This project was implemented in golang, and simulates an virtual wallet allowing users operate with multiple currencies (USDT, BTC, ARS).

APP structure

This application uses package oriented design as project structure, and also uses gorilla/mux for request router and dispatcher, gorilla/sessions to manage the users session and mysql as database.

The service is composed of two main components:

• user : manage users creations and credentials, here the repository is defined.
• movements: manage the user account transactions like send money to other account, deposits, account history, account balance, etc; here the repository is defined.

Endpoints

• POST /login : APP Login with alias and password.
• POST /logout : APP Logout.
• POST /users : User registration. Users with the same alias nor the same email are not allowed. Every time a new user is registered, all accounts for each currency are also initialized.
• GET /internal/movements/balance : Get the balance for each user currency.
• GET /internal/movements/history : Get the transactions history for each user currency.
• POST /internal/movements/send : Send money to other user.
• POST /internal/movements/deposit : Deposit money deposit in own account.

How To Run This Project

• Make sure you have already installed both Docker Engine and Docker Compose in the last version (Engine: 20.10.13 and Compose: v2.3.3).
• Make sure you have these variables set in your environment export DOCKER_BUILDKIT=0 and export COMPOSE_DOCKER_CLI_BUILD=0.
• Type make build to build the docker compose and then make up to up the compose.

Test

• Type make test to run the unit tests.
• You can find test cases to test the endpoints in the directory cmd/api/internal/testdata .

Improvements

There are several changes and improvements to be made:

• Improve the unit test cases to cover all border cases
• Use a container to test against a real database instead use mock
• Create and use environment variables