var LOGIN_URL, 
    LOGIN_USERNAME, 
    LOGIN_PASSWORD,
    FREE_TO_PLAY_URL,
    FREE_GAMES_URL,
    games;

var casper = require('casper').create({
    viewportSize: {
        width: 1024,
        height: 768
    },
    verbose: true,
    logLevel: 'warning'
});

if (!casper.cli.has('username') && !casper.cli.has('password')) {
     casper.echo('Usage: $ casperjs craw.js --username=USERNAME --password=PASSWORD').exit(-1);
}

LOGIN_USERNAME = casper.cli.get('username');
LOGIN_PASSWORD = casper.cli.get('password');
LOGIN_URL = 'https://auth.api.sonyentertainmentnetwork.com/login.jsp';
FREE_GAMES_URL = 'https://store.sonyentertainmentnetwork.com/#!/en-us/free-games/cid=STORE-MSF77008-PSPLUSFREEGAMES';
FREE_TO_PLAY_URL = 'https://store.sonyentertainmentnetwork.com/#!/en-us/free-to-play/cid=STORE-MSF77008-PS3F2PPS3';

var URLS = [];
URLS.push(FREE_TO_PLAY_URL);
if (casper.cli.has('psn-plus-member')) {
    URLS.push(FREE_GAMES_URL);
}

casper.start(LOGIN_URL, function() {
    'use strict';
    this.echo('Logging in...');
    this.echo(this.getTitle());

    this.fill('#signInForm', {
        'j_username': LOGIN_USERNAME,
        'j_password': LOGIN_PASSWORD
    }, true);
});

casper.waitForUrl(/loginSuccess\.jsp$/, function() {
    this.echo('Login successful!');
}, function() {
    this.echo('Failed to login.', 'ERROR').exit(-1);
});

casper.each(URLS, function(self, url) {  
    self.thenOpen(url, function() {
        'use strict';  
        this.echo(this.getTitle());

        this.waitUntilVisible(".addToCartBtn", function() {
            games = this.evaluate(function(){
                var elements = document.querySelectorAll(".cellGridGameStandard");
                games = [];
                [].forEach.call(elements, function(element, index) {
                    if (!element.classList.contains('ownAlready')) {
                        games.push({ 
                            'id': element.id, 
                            'title': element.querySelector(".cellTitle").innerHTML
                        });
                    }
                });

                return games;
            });

            if (games.length == 0) {
                this.echo("No free donuts for you today, brotha!", 'ERROR').exit(-1);
            }

            this.echo("Found out " + games.length + " left FREE games!");

            games.forEach(function(game, index) {
                casper.echo("Title: " + game.title);
            });

            this.echo('Purchasing title "' + games[0].title + '".');

            
        }, function() {
            this.echo("No free donuts for you today, brotha!", 'ERROR').exit(-1);
        }, 20000);

        this.then(function() {
            if (!games.length) {
                this.exit();
            }

            if (!this.visible('#' + games[0].id + ' .addToCartBtn')) {
                this.echo('This title is already on cart. Please remove it so I can purchase it.', 'error').exit(-1);
            }

            this.click('#' + games[0].id + ' .addToCartBtn');

            this.waitForSelector("#_modal_content .showCartBtn", function(){
                casper.click('#_modal_content .showCartBtn');
            }, function() {
                casper.log("Could not click on link to cart on the modal window after adding game to cart.")
            }, 15000);
        });

        this.waitForSelector('.familyCellGridCart', function() {
            this.click('a.proceedBtn');
        }, function(){
            this.log("Could not proceed with purchase once on cart.");
        }, 15000);

        this.waitForSelector("a.actionBtn", function(){
            if (this.fetchText('.totalPrice') != '$0.00$0.00') {
                this.log("Total Amount: " + this.fetchText('.totalPrice'));
                this.echo("Wow! This order is NOT FREE! Stopping...", 'error').exit(-1);                
            }
            this.echo("On Cart: " + this.fetchText('.firstCell .title'));
            this.click('a.actionBtn');
        });

        this.waitForSelector('.orderSummary .receiptMsg', function() {
            this.echo(this.fetchText('.orderSummary .receiptMsg'));
        }, function(){

        }, 15000);
    });
});

casper.run();