const mongoose = require('mongoose');

exports.initialize = function () {
	return new Promise(function (resolve, reject) {
		console.log("initialize mongoDB...");

		const option = {
			useMongoClient: true,
			config: {
				autoIndex: true
			},
			reconnectTries: Number.MAX_VALUE,
			reconnectInterval: 1000,
			poolSize: 300,
			connectTimeoutMS: 10000, // Give up initial connection after 10 seconds
			socketTimeoutMS: 20000, // Close sockets after 45 seconds of inactivity
		};

		mongoose.connect('mongodb://localhost:27017/shop', option, function (error) {
			if (error) {
				logger.info("please make sure mongodb is running", dbConfig.mongoURL);
				reject(new Error(error));

				process.exit(1);
				return;
			}

			logger.info("connected to mongoDB", dbConfig.mongoURL);
			resolve();
		});
	});
};