Air Quality API

This gets the air quality information of a nearest city using the GPS coordinates with iqair API

Setup

This section will guide you through the setup process required to get up and running with the application.

Requirements

• Node/NPM (optional yarn)

• Mysql

• TypeScript (npm install -g typescript || yarn global add typescript)

Get Started

1. Clone the project from the repository

2. Run npm install or yarn install from the root directory of the project

3. Run cp .env.example .env or create a .env file and copy the content of .env.example to it.

Database Setup

1. Create a new database in mysql

2. Fill the .env file created with the mysql database credentials

3. Run npm run migrate to create the tables, You can run npm run migrate:undo to undo the last migration or npm run migrate:undo:all to undo all migrations

Development

To run the application, use the command: npm run start:dev

To run the application tests, use the command: npm run test

It is important to set up environment variables for the system to function properly

Usage

• Register on “iqair” and create your API KEY HERE
• NOTE: the activation of the key can take a few minutes (about 5 minutes).
• On your .env replace <YOUR API KEY> with your generated API Key. AIR_VISUAL_API_KEY=<YOUR API KEY>

Start your node js server and call these endpoints

POSTMAN DOCUMENTATION HERE

• GET AIR QUALITY ENDPOINT /v1/location/nearest-city?longitude=2.352222&latitude=48.856613 [GET]

Expected Success Response (200)

{
    "status": true,
    "message": "Air quality retrieved successfully",
    "data": {
        "Result": {
            "Pollution": {
                "ts": "2022-09-09T06:00:00.000Z",
                "aqius": 51,
                "mainus": "p2",
                "aqicn": 17,
                "maincn": "p2"
            }
        }
    }
}

Network Error (503)

{
    "status": false,
    "error": "bad_request",
    "message": "Location request failed.",
    "data": {
        "gateway_response": "getaddrinfo ENOTFOUND api.airvisual.com"
    }
}

• MOST POLLUTED TIME (PARIS - DEFAULT) ENDPOINT /v1/location/most-polluted-time [GET]

Expected Success Response (200)

{
    "status": true,
    "message": "Most polluted time retrieved successfully",
    "data": {
        "time": "2022-09-08T14:49:01.000Z"
    }
}

• MOST POLLUTED TIME (ANY COODINATE) ENDPOINT /v1/location/most-polluted-time?longitude=2.352222&latitude=48.856613 [GET]

Expected Success Response (200)

{
    "status": true,
    "message": "Most polluted time retrieved successfully",
    "data": {
        "time": "2022-09-08T14:49:01.000Z"
    }
}

To run the cron job, use the command: npm run cron:dev This will execute the cron task that calls the IQAIR API to get “air quality “ for the Paris zone ( latitude: 48.856613 ,longitude: 2.352222) every 1 minute then save them in the database.

Logging

Sometimes, it's necessary to send logs to the stdout or store them, to do this, make use of the exported logger

You can log errors based on their levels:

• error

• warn

• info

• debug

Example: logger.error('This is an error!')

Ensure you avoid using console.log statements anywhere in the code.

Environment

Ensure you have eslint and prettier set up on your development environment. Ensure you follow proper linting rules as well.

Changelog

Please see CHANGELOG for more information what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email abrahamudele@gmail instead of using the issue tracker.

Credits

• Abraham Udele
  Find me on
  Twitter.
  Linkedin.

License

The MIT License (MIT). Please see License File for more information.