#!/usr/bin/env node

/**
 * Module dependencies.
 */

const app = require('../app');
const debug = require('debug')('cnc-speed-calculator:server');
const http = require('http');
const sequelize = require("../sequelize");
const init_db = require("../sequelize/init-db")
const logger = require("../config/winston")

/**
 * Get port from environment and store in Express.
 */

const port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

/**
 * Create HTTP server.
 */

const server = http.createServer(app);


/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
    let port = parseInt(val, 10);

    if (isNaN(port)) {
        // named pipe
        return val;
    }

    if (port >= 0) {
        // port number
        return port;
    }

    return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
    if (error.syscall !== 'listen') {
        throw error;
    }

    let bind = typeof port === 'string'
        ? 'Pipe ' + port
        : 'Port ' + port;

    // handle specific listen errors with friendly messages
    switch (error.code) {
        case 'EACCES':
            console.error(bind + ' requires elevated privileges');
            process.exit(1);
            break;
        case 'EADDRINUSE':
            console.error(bind + ' is already in use');
            process.exit(1);
            break;
        default:
            throw error;
    }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
    let addr = server.address();
    let bind = typeof addr === 'string'
        ? 'pipe ' + addr
        : 'port ' + addr.port;
    logger.info('Listening on ' + bind);
}

async function init() {
    logger.info(`Checking database connection...`);
    try {
        await sequelize.authenticate();
        logger.info('Database connection OK!');
        await init_db.check_database()


    } catch (error) {
        logger.error('Unable to connect to the database:');
        logger.error(error);
        process.exit(1);
    }
    /**
     * Listen on provided port, on all network interfaces.
     */
    server.listen(port);
    server.on('error', onError);
    server.on('listening', onListening);
}

init();