/**
 * * Copyright (c) 2016, Intel Corporation.
 *
 * This program is licensed under the terms and conditions of the
 * Apache License, version 2.0.  The full text of the Apache License is at
 * http://www.apache.org/licenses/LICENSE-2.0
 */

"use strict";

/**
 * This class will instantiate the ORM, load in the models, call the method
 * to create db connections, test the connection, then create the tables and
 * relationships if not present
 */
const fs = require('fs'),
  path = require('path'),
  Sequelize = require('sequelize'),
  config = require('config');

function init() {
  const db = {
    sequelize: new Sequelize(config.get("db.host"), config.get("db.options")),
    Sequelize: Sequelize
  };

  console.log("DB initialization beginning. DB access will block.");

  return db.sequelize.authenticate().then(function () {
    const Photo = db.sequelize.define('photo', {
      path: Sequelize.STRING,
      filename: Sequelize.STRING,
      added: Sequelize.DATE
    });

    console.log("Connection established successfully with DB.");
    return db.sequelize.sync({
      force: false
    }).then(function () {
      console.log("DB relationships successfully mapped. DB access unblocked.");
      return db;
    });
  }).catch(function (error) {
    console.log("ERROR: Failed to authenticate with DB");
    console.log("ERROR: " + JSON.stringify(config.get("db"), null, 2));
    console.log(error);
    return reject(error);
  });
}

module.exports = init();