modulejs.define('ext/info', ['_', '$', 'modernizr', 'core/event', 'core/format', 'core/resource', 'core/settings', 'core/store'], function (_, $, modernizr, event, format, resource, allsettings, store) {

    var settings = _.extend({
            enabled: false,
            show: false,
            qrcode: true,
            qrColor: '#999'
        }, allsettings.info);
    var template =
            '<div id="info">' +
                '<div class="icon"><img/></div>' +
                '<div class="block">' +
                    '<div class="label"/>' +
                    '<div class="time"/>' +
                    '<div class="size"/>' +
                    '<div class="content">' +
                        '<span class="folders"/> <span class="l10n-folders"/>, ' +
                        '<span class="files"/> <span class="l10n-files"/>' +
                    '</div>' +
                '</div>' +
                '<div class="qrcode"/>' +
            '</div>';
    var settingsTemplate =
            '<div class="block">' +
                '<h1 class="l10n-info">Info</h1>' +
                '<div id="view-info" class="button view">' +
                    '<img src="' + resource.image('info-toggle') + '" alt="view-info"/>' +
                '</div>' +
            '</div>';
    var storekey = 'ext/info';
    var $img;
    var $label;
    var $time;
    var $size;
    var $content;
    var $folders;
    var $files;
    var $qrcode;
    var currentFolder;


    function updateSettings() {

        if (store.get(storekey)) {
            $('#view-info').addClass('active');
            $('#info').show();
        } else {
            $('#view-info').removeClass('active');
            $('#info').hide();
        }
    }

    function update(item) {

        var src = item.thumbRational || item.icon;
        var isThumb = Boolean(item.thumbRational);

        if (item.isCurrentFolder() || !src) {
            src = resource.icon('folder');
        }

        $img.attr('src', src);
        if (isThumb) {
            $img.addClass('thumb');
        } else {
            $img.removeClass('thumb');
        }

        $label.text(item.label);
        if (_.isNumber(item.time)) {
            $time.text(format.formatDate(item.time));
        } else {
            $time.text('.');
        }

        if (_.isNumber(item.size)) {
            $size.text(format.formatSize(item.size));
            $size.show();
        } else {
            $size.hide();
        }

        if (item.isContentFetched) {
            var stats = item.getStats();
            $folders.text(stats.folders);
            $files.text(stats.files);
            $content.show();
        } else {
            $content.hide();
        }

        if (settings.qrcode) {
            $qrcode.empty().qrcode({
                render: modernizr.canvas ? 'canvas' : 'div',
                size: 200,
                fill: settings.qrColor,
                background: null,
                text: window.location.protocol + '//' + window.location.host + item.absHref
            });
        }
    }

    function onMouseenter(item) {

        update(item);
    }

    function onMouseleave() {

        update(currentFolder);
    }

    function onLocationChanged(item) {

        currentFolder = item;
        update(currentFolder);
    }

    function init() {

        if (!settings.enabled) {
            return;
        }

        var $info = $(template).appendTo('#mainrow');
        $img = $info.find('.icon img');
        $label = $info.find('.label');
        $time = $info.find('.time');
        $size = $info.find('.size');
        $content = $info.find('.content');
        $folders = $info.find('.folders');
        $files = $info.find('.files');
        $qrcode = $info.find('.qrcode');

        if (!settings.qrcode) {
            $qrcode.remove();
        }

        $(settingsTemplate)
            .appendTo('#sidebar')
            .find('#view-info')
            .on('click', function (ev) {

                store.put(storekey, !store.get(storekey));
                updateSettings();
                ev.preventDefault();
            });

        // ensure stored value is boolean, otherwise set default
        if (typeof (store.get(storekey)) !== 'boolean') {
            store.put(storekey, settings.show);
        }
        updateSettings();

        event.sub('location.changed', onLocationChanged);
        event.sub('item.mouseenter', onMouseenter);
        event.sub('item.mouseleave', onMouseleave);
    }


    init();
});