Simple backend service for managing transactions and user accounts.

Demo link

1. Make sure you have cargo installed.
2. Make sure you have PostgreSQL installed and it is up and running. Try using PostgreSQL 15 or later.
3. You can optionally use psql to connect to the postgresql database.

1. Create a database with the name dodo_payments.

$ psql
user=# create database dodo_payments;

2. Start the application. It starts at port 3030.

$ cargo run

3. Use the APIs listed in the next section via curl or a tool of your choice.

The application provides the following features.

1. User Management

POST /register

{
    "email": "test@email.com",
    "password": "testpass"
}

Response

User Added

POST /login

{
    "email": "test@email.com",
    "password": "testpass"
}

Response

"<authorization token>"

2. Transaction Management

POST /credit

Content-Type: application/json
Authorization: <token>

Request

{
    "amount": 4.32
}

Response

{
    "ttype": "Credit",
    "amt": 4.32
}

POST /debit

Content-Type: application/json
Authorization: <token>

Request

{
    "amount": 1.50
}

Response

{
    "ttype": "Debit",
    "amt": 1.50
}

3. Account Balances GET /transactions

Authorization: <token>

Response

[
    {
        "id": 2,
        "ttype": "Debit",
        "amt": 1.50
    },
    {
        "id": 1,
        "ttype": "Credit",
        "amt": 4.32
    }
]

GET /balance

Authorization: <token>

Response

{
    "amount": 2.82
}