Huljo / MowItNow

'use strict';

var os = require('os'),

    EOL = os.EOL,

    Config = require('./config'),

    Position = require('./position'),

    Grid = require('./grid'),

    Mower = require('./mower');

// Expose `App`.

module.exports = App;

/**

 * Set up App with `options`

 * which is responsible for multiple-unit mower's remote control

 *

 * Options:

 *

 *   - `configFile` config file path

 *

 * @param {Object} options

 * @api public

 */

function App(options) {

    this.options = options || {};

    this.config = new Config(this.options.configFile);

    this.logEnabled = this.options.debug || false;

    this.grid = new Grid(this.config.topRightPos);

    this.mowers = this.createMowers(this.config.mowers);

}

/**

 * Start mower's movement.

 *

 * @api protected

 */

App.prototype.run = function() {

    var self = this;

    this.mowers.forEach(function(mower) {

        mower.start().then(function(mower) {

            self.log('Mower '+mower.id+' stopped at position: x:' +

                mower.position.x+' y:'+mower.position.y+' cardinal: '+mower.position.c+EOL)

        });

    });

};

/**

 * Create mowers

 *

 * @param {Array} mowersConf

 * @api protected

 */

App.prototype.createMowers = function(mowersConf) {

    var mowers = [];

    for(var i=0; i<mowersConf.length; i++) {

        var position = new Position(mowersConf[i].pos, mowersConf[i].cardinal);

        mowers.push(new Mower(i, this.grid, position, mowersConf[i].instructions));

    }

    return mowers;

};

/**

 * Stdout filtered by log option

 *

 * @param {String} message

 * @api protected

 */

App.prototype.log = function(message) {

    if(this.logEnabled) {

        process.stdout.write(message);

    }

};