Wallet Service

This project is a wallet service application built with Node.js and PostgreSQL, containerized using Docker.

Run Project using docker compose (solution 1)

Before you begin, ensure you have the following installed on your system:

Follow these steps to get your development environment running:

Clone the repository

git clone https://github.com/rezaamya/example_for_wallet_service.git
cd example_for_wallet_service

Set up environment variables

Create a .env file in the root directory of the project and add the following content:
```
# Application
APP_PORT=4000

# Database
POSTGRES_HOST=wallet-service-db
POSTGRES_PORT=5432
POSTGRES_USER=walletuser
POSTGRES_PASSWORD=walletpassword
POSTGRES_DB=walletdb
```
Feel free to change the values as needed, but ensure that POSTGRES_HOST matches the name of your database service in the Docker Compose file.
Build and run the containers

Use Docker Compose to build and start the containers:
```
docker-compose up --build
```
This command will build the Docker images and start the containers. The --build flag ensures that Docker rebuilds the images if there are any changes.
Accessing the application

Once the containers are up and running, you can access the application at:
```
http://localhost:4000
```
The PostgreSQL database will be accessible on your host machine at localhost:5436.
Stopping the application

To stop the application and remove the containers, use:
```
docker-compose down
```

For development purposes, you can use the following commands:

If you want to run the project without using docker-compose, use following steps:

Before you begin, ensure you have the following installed on your system:

Follow these steps to set up and run the project:

Clone the repository

git clone https://github.com/rezaamya/example_for_wallet_service.git
cd example_for_wallet_service

Set up environment variables

Create a .env file in the root directory of the project and add the following content:
```
# Application
APP_PORT=4000

# Database
POSTGRES_HOST=localhost
POSTGRES_PORT=5436
POSTGRES_USER=walletuser
POSTGRES_PASSWORD=walletpassword
POSTGRES_DB=walletdb
```
Adjust these values if your PostgreSQL container uses different settings.
Install dependencies

Install the required npm packages:
```
npm install
```
Ensure PostgreSQL is running

Make sure your PostgreSQL container is running. If not, start it using:
```
docker run -d --name wallet-postgres -e POSTGRES_USER=walletuser -e POSTGRES_PASSWORD=walletpassword -e POSTGRES_DB=walletdb -p 5436:5432 postgres:12.19-alpine3.20
```
This command starts a PostgreSQL container with the settings specified in your .env file.
Run the application

Start the application in development mode:
```
npm run start:dev
```
For production mode:
```
npm run build
npm run start:prod
```
The application will be accessible at http://localhost:4000.
Running tests

To run the unit tests:
```
npm run test
```
To run end-to-end tests:
```
npm run test:e2e
```
To run tests with coverage:
```
npm run test:cov
```

GET Balance:

curl --location 'localhost:4000/v1/balance?user_id=1'

Add/Subtract Money:

curl --location 'localhost:4000/v1/money'  --header 'Content-Type: application/json'  --data '{ "user_id": 1, "amount": 50 }'

Ensure that the PostgreSQL container is running before starting the application.
The application uses port 4000 by default. Ensure this port is free on your system.
For any changes in the database configuration, update both the .env file and the PostgreSQL container settings.