var express = require("express");
var mysql = require("mysql");
var bodyParser = require("body-parser");
var rest = require("./REST.js");
var app = express();

const port = 3000;

function REST() {
    var self = this;
    self.connectMysql();


};

    REST.prototype.connectMysql = function () {
        var self = this;
        var pool = mysql.createPool({
            connectionLimit: 100,
            host: "127.0.0.1", // or 127.0.0.1
            user: "root",
            password: "",
            database: "world",
            debug: false
        });

        pool.getConnection(function (err, connection) {
            if (err){
                console.error(err);
                self.stop(err);
            }
            else {
                self.configure(connection);
            }
        });
    };

    REST.prototype.configure = function (connection) {
        var self = this;
        app.use(bodyParser.urlencoded({ extended: true}));
        app.use(bodyParser.json());

        var router = express.Router();
        app.use('/api', router);

        var rest_router = new rest(router, connection);
        console.log("PORT " + port);
        self.startServer();
    };

    REST.prototype.startServer = function () {
        app.listen(port, function () {
            console.log('Express app listening at http://localhost: ' + port);
        });
    };

    REST.prototype.stop = function (err) {
        console.log("Database connection issue: " + err  + "\n");
        process.exit()
    };


new REST();