LendsQR API

Welcome to the LendsQR API, you can view the live API here. The entire application is contained within the index.tsx file which is in the src directory.

The application is in a docker container with node version node:16.16.0-alpine which is the LTS at the writing of this API.

Installation

Make sure you have docker and node installed on your pc, then run

npm i

to install the package dependencies. Also provide the .env file in the root directory as stated in .env.example file.

Run the app

Make sure docker has started before running any of the commands below.

To start the development environment run

docker-compose -f docker-compose.yaml -f docker-compose.dev.yaml up -d --build

To stop the development environment run

docker-compose -f docker-compose.yaml -f docker-compose.dev.yaml down

To start a previously stopped environment run

docker-compose -f docker-compose.yaml -f docker-compose.dev.yaml up -d

To build the docker images for production run

docker-compose -f docker-compose.yaml -f docker-compose.prod.yaml build

To view lendsQR logs run

docker logs -f lendsqr-api

To interact with lendsQR CLI run

docker exec -it lendsqr-api /bin/sh

The application is behind an nginx proxy server which is listening on port 80. After you've started the application, visit the endpoint below to make sure its running properly

http://localhost

You should get the message below

{
    "message": "Welcome to LendsQR api 🔥🔥🔥"
}

Run migration

To create an up migrations

npm run knex:migrate

To create a down migration

npm run knex:rollback

Run the tests

The test uses an in memory database for sqlite3, hence making the tests extremely fast.

npm run test

All tests are written in the src/__test__ directory.

REST API

The REST API to the lendsqr app is described below. The base URL is

http://localhost/api/v1

The base URL for the live version is

https://ifeoluwa-lendsqr-api.herokuapp.com/api/v1

Register a User

Request

POST /auth/register

{
    "email": "[email protected]",
    "fullName": "Janet Doe",
    "password": "password"
}

Response

{
    "message": "success",
    "data": {
        "id": 17,
        "fullName": "Janet Doe",
        "email": "[email protected]"
    }
}

Login a user

Request

POST /auth/signin

{
    "email": "[email protected]",
    "password": "password"
}

Response

{
    "message": "success",
    "data": {
        "id": 17,
        "fullName": "Janet Doe",
        "email": "[email protected]",
        "createdAt": "2022-08-16T03:51:18.000Z",
        "updatedAt": "2022-08-16T03:51:18.000Z"
    }
}

Logout a user

Request

GET /auth/signout

{}

Response

{
    "message": "success",
    "data": {
        "message": "Logged out successfully"
    }
}

Get the current user

Request

GET auth/current-user

{}

Response

{
    "message": "success",
    "currentUser": {
        "id": 17,
        "email": "[email protected]",
        "iat": 1660638949
    }
}

Create an account

• accountType can either be Savings or Current
• currency can either be USD or NGN
• passcode must be of length 4

Request

POST /account

{
    "accountType": "Savings",
    "currency": "USD",
    "passcode": 1234
}

Response

{
    "message": "success",
    "data": {
        "id": 9,
        "accountNumber": "2444594569",
        "balance": "0",
        "type": "Savings",
        "currency": "USD",
        "createdAt": "2022-08-16T08:37:10.000Z",
        "updatedAt": "2022-08-16T08:37:10.000Z",
        "userID": 17
    }
}

Fund an account

Request

POST /account/fund

{
    "amount": "500"
}

Response

{
    "message": "success",
    "data": {
        "message": "Account has been funded"
    }
}

Get a user's account

Request

GET /account

{}

Response

{
    "message": "success",
    "data": {
        "id": 9,
        "accountNumber": "2444594569",
        "balance": "5000",
        "type": "Savings",
        "currency": "USD",
        "createdAt": "2022-08-16T08:37:10.000Z",
        "updatedAt": "2022-08-16T08:37:10.000Z",
        "userID": 17
    }
}

Transfer fund

Transfer uses transaction to ensure that the entire transfer workflow is seen through till the end. Hence, all changes are reverted if an error occurred at any point during the transfer process.

Request

POST /account/transfer

{
    "amount": "100",
    "recipientAccount": "5317717302",
    "passcode": "1234"
}

Response

{
    "message": "success",
    "data": {
        "transfer": "Completed"
    }
}

Withdraw fund

Request

POST /account/withdraw

{
    "amount": 2000,
    "passcode": 1234
}

Response

{
    "message": "success",
    "data": {
        "withdrawal": "Completed"
    }
}

Custom errors are thrown for each endpoint depending on the validation that has failed