//-------------------------------------------------
// youtube playlist jquery plugin
// Created by dan@geckonm.com
// www.geckonewmedia.com
//
// v1.1 - updated to allow fullscreen
// - thanks Ashraf for the request
// v1.2 - updated to allow for mixed yt/image galleries
// - for Markus Thyberg
//-------------------------------------------------

String.prototype.startsWith = function(str){
    return (this.indexOf(str) === 0);
}


jQuery.fn.ytplaylist = function(options) {
 
  // default settings
  var options = jQuery.extend( {
    holderId: 'ytvideo',
playerHeight: 300,
playerWidth: 450,
addThumbs: false,
thumbSize: 'small',
showInline: false,
autoPlay: false,
showRelated: false,
allowFullScreen: false
  },options);
 
  return this.each(function() {

    var $el = $(this);

var autoPlay = "";
var showRelated = "&rel=0";
var fullScreen = "";
if(options.autoPlay) autoPlay = "&autoplay=1";
if(options.showRelated) showRelated = "&rel=1";
if(options.allowFullScreen) fullScreen = "&fs=1";

//throw a youtube player in
function playOld(id) {
var html = '';

html += '<object height="'+options.playerHeight+'" width="'+options.playerWidth+'">';
html += '<param name="movie" value="http://www.youtube.com/v/'+id+autoPlay+showRelated+fullScreen+'"> </param>';
html += '<param name="wmode" value="transparent"> </param>';
if(options.allowFullScreen) {
html += '<param name="allowfullscreen" value="true"> </param>';
}
html += '<embed src="http://www.youtube.com/v/'+id+autoPlay+showRelated+fullScreen+'"';
if(options.allowFullScreen) {
html += ' allowfullscreen="true" ';
}
html += 'type="application/x-shockwave-flash" wmode="transparent" height="'+options.playerHeight+'" width="'+options.playerWidth+'"></embed>';
html += '</object>';

return html;
};


function playNew (id) {
var html = '';
html += '<iframe width="'+ options.playerWidth +'" height="'+ options.playerHeight +'"';
html += ' src="http://www.youtube.com/embed/'+ id +'" frameborder="0"';
hml += ' allowfullscreen></iframe>';
}


//grab a youtube id from a (clean, no querystring) url (thanks to http://jquery-howto.blogspot.com/2009/05/jyoutube-jquery-youtube-thumbnail.html)
function youtubeid(url) {
var ytid = url.match("[\\?&]v=([^&#]*)");
ytid = ytid[1];
return ytid;
};



//
$el.children('li').each(function() {
            $(this).find('a').each(function() {
                var thisHref = $(this).attr('href');
                
                //old-style youtube links
                if (thisHref.startsWith('http://www.youtube.com')) {
                    $(this).addClass('yt-vid');
                    $(this).data('yt-id', youtubeid(thisHref) );
                }
                //new style youtu.be links
                else if (thisHref.startsWith('http://youtu.be')) {
                    $(this).addClass('yt-vid');
                    var id = thisHref.substr(thisHref.lastIndexOf("/") + 1);
                    $(this).data('yt-id', id );
                }
                else {
                    //must be an image link (naive)
                    $(this).addClass('img-link');
                }
                
               // alert(thisHref);
            });
});


//load video on request
$el.children("li").children("a.yt-vid").click(function() {

if(options.showInline) {
$("li.currentvideo").removeClass("currentvideo");
$(this).parent("li").addClass("currentvideo").html(playOld($(this).data("yt-id")));
}
else {
$("#"+options.holderId+"").html(playOld($(this).data("yt-id")));
$(this).parent().parent("ul").find("li.currentvideo").removeClass("currentvideo");
$(this).parent("li").addClass("currentvideo");
}
return false;
});

$el.find("a.img-link").click(function() {
var $img = $('<img/>');
$img.attr({
src:$(this).attr('href') })
.css({
display: 'none',
position: 'absolute',
left: '0px',
top: '50%'});

if(options.showInline) {
$("li.currentvideo").removeClass("currentvideo");
$(this).parent("li").addClass("currentvideo").html($img);
}
else {

$("#"+options.holderId+"").html($img);
$(this).closest("ul").find("li.currentvideo").removeClass("currentvideo");
$(this).parent("li").addClass("currentvideo");

}
            //wait for image to load (webkit!), then set width or height
            //based on dimensions of the image
            setTimeout(function() {
                if ( $img.height() < $img.width() ) {
                    $img.width(options.playerWidth).css('margin-top',parseInt($img.height()/-2, 10)).css({
                        height: 'auto'
                    });
                }
                else {
                    $img.css({
                        height: options.playerHeight,
                        width: 'auto',
                        top: '0px',
                        position: 'relative'
                    });
                }
                $img.fadeIn();
            }, 100);
            
            
return false;
});


//do we want thumns with that?
if(options.addThumbs) {

$el.children().each(function(i){

//replace first link
var $link = $(this).find('a:first');
var replacedText = $(this).text();

if ($link.hasClass('yt-vid')) {

if(options.thumbSize == 'small') {
     var thumbUrl = "http://img.youtube.com/vi/"+$link.data("yt-id")+"/2.jpg";
     }
     else {
     var thumbUrl = "http://img.youtube.com/vi/"+$link.data("yt-id")+"/0.jpg";
     }

     var thumbHtml = "<img src='"+thumbUrl+"' alt='"+replacedText+"' />";
     $link.empty().html(thumbHtml+replacedText).attr("title", replacedText);

}
else {
//is an image link
var $img = $('<img/>').attr('src',$link.attr('href'));
$link.empty().html($img).attr("title", replacedText);
}

});

}

//load inital video
var firstVid = $el.children("li:first-child").addClass("currentvideo").children("a").click();
        


   
  });
 
};