"use strict";
const fs = require("fs");
const path = require("path");
const Sequelize = require("sequelize");
const typedefs = require("../typedefs");
const logger = require("../utils/logger")(module);
const basename = path.basename(__filename);
const env = process.env.NODE_ENV || "development";
const config = require(__dirname + "/../config/sequelize.js")[env];
const db = {};

/** @type {typedefs.Sequelize} */
let sequelize;
if (config.use_env_variable) {
	sequelize = new Sequelize(process.env[config.use_env_variable], config, {
		logging: (msg) => logger.debug(msg)
	});
} else {
	sequelize = new Sequelize(config.database, config.username, config.password, config, {
		logging: (msg) => logger.debug(msg)
	});
}

(async () => {
	try {
		await sequelize.authenticate();
		logger.info("Sequelize auth success");
	} catch (error) {
		logger.error("Sequelize auth error", { err });
		throw error;
	}
})();

// Read model definitions from folder
fs
	.readdirSync(__dirname)
	.filter(file => {
		return (file.indexOf(".") !== 0) && (file !== basename) && (file.slice(-3) === ".js");
	})
	.forEach(file => {
		const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);
		db[model.name] = model;
	});

// Setup defined associations
Object.keys(db).forEach(modelName => {
	if (db[modelName].associate) {
		db[modelName].associate(db);
	}
});

db.sequelize = sequelize;
db.Sequelize = Sequelize;

module.exports = db;