secret.ts

import * as Dotenv from 'dotenv';
import SecretKeys from '../types/secretkeys';

const secretValues: SecretKeys = {
    ENVIRONMENT: '',
    PORT: 0,
    DB_NAME: 'noname.db'
};

class Secret {    

    /**
     * Gets the secret.
     */
    public static get Secret(): SecretKeys {    
        // Loading environment variables from .env file
        Dotenv.config({ path: `${__dirname}/../../.env` });

        secretValues.ENVIRONMENT = process.env['NODE_ENV'];      
        secretValues.DB_NAME = process.env['DB_NAME'];
        secretValues.PORT = parseInt(process.env['PORT']);

        if (!secretValues.DB_NAME) {
            console.log('No database name provided. Set DB_NAME environment variable.');
            process.exit(1);
        }

        if (!secretValues.PORT) {
            console.log('Server listening port not set.');
            process.exit(1);
        }

        return secretValues;
    }

}

export default Secret.Secret;