env.service.js

"use strict";
const dotenv = require("dotenv");
const fs = require("fs");
const path = require("path");
const Logger = require("./logger.service");
module.exports = {
    load: function(path) {
        const result = dotenv.config({
            path: path
        });
        createGCPFile();
        return result;
    },
    isDevelopment: function() {
        return process.env.NODE_ENV.trim() === "development";
    },
    isProduction: function() {
        return process.env.NODE_ENV === "deployment";
    },
    isTest: function() {
        return process.env.NODE_ENV === "test";
    }
};

function createGCPFile() {
    const creds = {
        type: process.env.TYPE,
        project_id: process.env.PROJECT_ID,
        private_key_id: process.env.PRIVATE_KEY_ID,
        private_key: process.env.PRIVATE_KEY,
        client_email: process.env.CLIENT_EMAIL,
        client_id: process.env.CLIENT_ID,
        auth_uri: process.env.AUTH_URI,
        token_uri: process.env.TOKEN_URI,
        auth_provider_x509_cert_url: process.env.AUTH_PROVIDER_X509_CERT_URL,
        client_x509_cert_url: process.env.CLIENT_X509_CERT_URL
    };
    for (var property in creds) {
        if (creds.hasOwnProperty(property)) {
            if (typeof property === "undefined") {
                Logger.error(`GCP credential ${property} was undefined.`);
            }
        }
    }
    const stringified = JSON.stringify(creds);
    const unEscaped = stringified.replace(/\\\\n/g, "\\n");
    const fileLocation = path.join(__dirname, "../gcp_creds.json");
    fs.writeFileSync(fileLocation, unEscaped);
    process.env.GOOGLE_APPLICATION_CREDENTIALS = fileLocation;
}