(function () {
'use strict';

var showOnlyFailures = false;
var template =
        '<div id="mocha-bar">' +
            '<a class="title" href="?">' + document.title + '</a>' +
            '<div class="stats"/>' +
            '<div class="progress"/>' +
        '</div>';
var $mochaBar = $(template);
var $mochaStats = $mochaBar.find('.stats');
var $mochaProgress = $mochaBar.find('.progress');


function toggleFailureFilter(ev) {

    ev.stopImmediatePropagation();

    showOnlyFailures = !showOnlyFailures;
    if (showOnlyFailures) {
        $('.suite, .test').hide();
        $('.suite.fail, .test.fail').show();
    } else {
        $('.suite, .test').show();
    }
}

function addSuiteStats() {
    /*jshint validthis: true */

    var $suite = $(this);

    var tests = $suite.find('.test').length;
    var passed = $suite.find('.test.pass').length;
    var failed = tests - passed;

    var $header = $suite.find('> h1 a');
    var $count = $('<span class="count"><span class="passed">' + passed + '</span><span class="failed">' + failed + '</span></span>');

    if (!failed) {
        $count.find('.failed').remove();
    }

    $suite.addClass(tests === passed ? 'pass' : 'fail');
    $header.append($count);
}

function fixCodeFormatting() {
    /*jshint validthis: true */

    var $code = $(this);
    $code.text($code.text().trim().replace(/;\n\s*/g, ';\n'));
}


function onEnd() {
    /*jshint validthis: true */

    var runner = this;
    var failed = runner.stats.failures > 0;
    var stats = (runner.stats.duration / 1000.0).toFixed(3) + 's';

    if (failed) {
        $mochaStats.on('click', toggleFailureFilter);
    }

    $mochaBar.addClass(failed ? 'fail' : 'pass');
    $mochaProgress.hide();
    $mochaStats.text(stats);
    $('#mocha-report .suite').each(addSuiteStats);
    $('#mocha-report code').each(fixCodeFormatting);
}

function onTest() {
    /*jshint validthis: true */

    var runner = this;
    var percent = 100.0 * runner.stats.tests / runner.total;
    var stats = ((new Date().getTime() - runner.stats.start) / 1000.0).toFixed(3) + 's';

    if (runner.stats.failures) {
        $mochaBar.addClass('fail');
    }
    $mochaProgress.css('width', (100 - percent) + '%');
    $mochaStats.text(stats);
}

function setupMocha() {

    window.assert = chai.assert;
    mocha.setup('bdd');
    $(function () { $mochaBar.appendTo('#mocha'); });
}

function runMocha() {

    mocha.run().on('test', onTest).on('end', onEnd);
}

window.util = window.util || {};
window.util.setupMocha = setupMocha;
window.util.runMocha = runMocha;

}());