// ==UserScript==
// @name           Images for TF2R Chat - Error Edition
// @description    Attempts to embed link as image by Shift-clicking on it. Shift-clicking again would hide it.
// @version        1.6
// @include        http://tf2r.com/chat.html
// @include        http://tf2r.com/k*.html
// ==/UserScript==

(function() {
    function wrapper () {
        (function(){
            var tryToEmbedLink = function(a) {
                a = $(a);
                var href = a.attr('href');
                if (href === undefined) return false;

                if ( // domains and file extension
                        (/^[^?#]*?(?:\.png|\.jpg|\.bmp|\.jpeg|\.gif|\.ico|\.apng)(?:[?#].*?)*?$/i).test(href)
                        || (/^http(?:|s):\/\/[^\.]+?\.steampowered\.com\/.*?$/i).test(href)
                        || (/^http(?:|s):\/\/[^\.]+?\.steamcommunity\.com\/.*?$/i).test(href)
                        || (/^http(?:|s):\/\/(?:www\.|)puu.sh\/.*?$/i).test(href)
                        || (/^http(?:|s):\/\/(?:www\.|)ompldr\.org\/.*?$/i).test(href)
                ) {
                    $("<img>", {
                        load: function () {
                            $(this).attr('style', 'max-width: 560px; max-height: 400px;');
                            var embedContainer = $(
                                '<div class="iws-embedded-image-container">\
                                    <div style="clear:both;float:none;"></div>\
                                    <div style="clear:both;float:none;"></div>\
                                </div>'
                            );
                            var imageWrap = a.clone();
                            imageWrap.html(this).insertAfter(embedContainer.find('div:first'));
                            embedContainer.data('originalTag', a);
                            a.replaceWith(embedContainer);
                        },
                        error: function() {
                            $(this).remove();
                        },
                        src: a.attr('href')
                    });
                }
            };
            $('.userfeed, #chat').delegate('.userfeedpost .ufmes a', 'click', function(e) {
                if (e.shiftKey) {
                    var $embed = $(this).closest('.iws-embedded-image-container');
                    if ($embed.length > 0) {
                        $embed.replaceWith($embed.data('originalTag'));
                    } else {
                        tryToEmbedLink(this);
                    }
                    e.preventDefault();
                    return false;
                }
            });
        })();
    };

    var script = document.createElement('script');
    script.appendChild(document.createTextNode('('+ wrapper +')();'));
    (document.head || document.body || document.documentElement).appendChild(script);

})();