function setupVideoObject(){
	return {
		target: null, 
		gifUrl: null,
		name: null,
		permalink: null
	};

}

function setLilikLogo(){
	jQuery(" header#top-nav a.logo").css({
						"background-image": "url("+chrome.extension.getURL("assets/logo100.png")+")",
						"background-repeat": "no-repeat",
						"background-size": "30px 30px"

						});
}


//roll out long post in home page:
function setLongPostListener(){
	jQuery("#list-view-2").on( "click", ".badge-evt.post-read-more", function( event ) {
		event.preventDefault();
		
		post = jQuery(event.target);
		
		var sidebar = jQuery("#sidebar-content-mod");
		sidebar.removeClass("closed");
		sidebar.html("<img>");
		
		var image = jQuery("#sidebar-content-mod img");

		jQuery.get( post.attr('href'), function(content) {
			image.attr("src", jQuery(content).find('.badge-item-img').attr("src"));
		});

	});

	jQuery(document).on('scroll', function(){

		var sidebar = jQuery("#sidebar-content-mod");
		if( !sidebar.hasClass('closed') ){
			sidebar.addClass('closed');
		}
	});

}

function setupSidebar(){
	if( !jQuery("#sidebar-content-mod").length ){
		
		jQuery("#container").after("<div id='sidebar-content-mod' class='closed'></div>");
		var menuHeight = jQuery("#top-nav").height();

	}
	var pageHeight = jQuery(window).height();
	jQuery("#sidebar-content-mod").css({"height": pageHeight, top: menuHeight});
	
}

//clean wake up overlay
function cleanWakeUp(){

	//	jQuery('head').append('<script type="text/javascript">GAG.Configs._configs.configs.idlePopupIdleTime = 9007199254740991; clearTimeout(GAG.PageController._idlePopupTimer); </script>');
	// 31556926000 = 1 year in ms.
	var code = ['GAG.Configs._configs.configs.idlePopupIdleTime = 31556926000; clearTimeout(GAG.PageController._idlePopupTimer);'].join('\n');
	var script = document.createElement('script');
	script.textContent = code;
	(document.head||document.documentElement).appendChild(script);
	script.parentNode.removeChild(script);
}

//set a listener to videos right click
function setVideoListener(){

	jQuery(".main-wrap").on('contextmenu', "video", function(e) {
		currentVideo.target = jQuery(event.target);
		currentVideo.gifUrl = currentVideo.target.parent().data("image");
		currentVideo.name = currentVideo.target.parents("article").find("h2").text().trim() + ".gif";
	});

	jQuery(".main-wrap").on('contextmenu', "a", function(e) {
		currentVideo.target = jQuery(event.target);
		var previous = currentVideo.target.parents("article").prev();
		var id = currentVideo.target.parents("article").data("entry-id");

		if (previous.length > 0){
			id = previous.data("entry-id");
		}
		currentVideo.permalink = [location.protocol, '//', location.host, location.pathname].join('') + "?id=" + id;
		
		if (currentVideo.permalink == undefined){
			console.log("Warning: unable to find the permalink for this post")
		}
	});

}

function setOnNewNodeListener(){
	jQuery(".main-wrap").on("DOMNodeInserted", function() {
		NSFWListener();
	});
}
function setOnWindowResizeListener(){
	jQuery(window).on('resize', function(){
		setupSidebar();
	});
}

//download url 
function downloadURI(uri, name){

	var link = document.createElement("a");
	link.download = name;
	link.href = uri;
	link.click();
}

function enableSoftTransitions( element ){

	jQuery(element).addClass("softTransitions");

}

//night mode
function nightMode(){

	if( hasComments())
		setInvertCommentImages();

	if( isNightTime() ){
		toggleNight("on");
	}

}

function isNightTime(){

	var nightHour = 19;
	var morningHour = 7;
	var date = new Date();
	var hours = date.getHours();
	if( hours >= nightHour || hours <= morningHour)
		return true;
	else
		return false;
}	
function hasComments(){
	return jQuery("#gcomment-widget-jsid-comment-sys").length;
}

function toggleNight( command ){

	nightClass = "night";
	var container = jQuery('#container');

	if( hasComments())
		var commentPosts = frames['gcomment-widget-jsid-comment-sys'].document.getElementsByClassName("post-comment")[0];


	if( command ){
		switch( command ){
			case 'on':
				container.addClass( nightClass );
					if( hasComments())
						addClass( commentPosts, nightClass );
			break;
			case 'off':
				container.removeClass( nightClass );
					if( hasComments())
						removeClass( commentPosts, nightClass );

			break;
		}
	}else{

		if( container.hasClass( nightClass ) ){
			toggleNight("off");
		}else{
			toggleNight("on");
		}
	}
}

function setInvertCommentImages(){
	// jQuery( "img", frames['gcomment-widget-jsid-comment-sys'].document ).css({"-webkit-filter" : "invert(100%)"});
	
	var cssLink = document.createElement("link") 
	cssLink.href = chrome.extension.getURL("style.css");
	cssLink.rel = "stylesheet"; 
	cssLink.type = "text/css"; 	
	frames['gcomment-widget-jsid-comment-sys'].document.body.appendChild(cssLink);

}

function showNSFW(){
	jQuery(".badge-nsfw-entry-cover").each(function() {
		jQuery(this).addClass("deobfuscated");

		var imageSource = "http://img-9gag-fun.9cache.com/photo/" + jQuery(this).parents("article").data("entry-id") + "_460s.jpg";
		
		// TODO: isn't enough a string instead of a jquery object?
		jQuery(this).html( jQuery('<img/>', { src: imageSource } ));
	});
}

function NSFWListener(){
	if ( !jQuery("#jsid-upload-menu").not(".deobfuscated").is(":visible") && !updatingDom ){
			updatingDom = true;
			showNSFW();
			updatingDom = false;
	}
}
//init everything

jQuery(document).ready(function() {
	updatingDom = false;
	showNSFW();
	
	setOnNewNodeListener();
	setOnWindowResizeListener();
	setLongPostListener();
	
	cleanWakeUp();
	// TODO: this object is not in the right place:
	currentVideo = setupVideoObject();
	setVideoListener();

	enableSoftTransitions(jQuery("#container"));

	setupSidebar();

	nightMode();
	setLilikLogo();
	
	console.log("9gag Mod Successfully Loaded!");
});

chrome.extension.onMessage.addListener(
	function(request, sender, sendResponse) {
		switch (request.command){
			case "copyGifUrl":
				sendResponse({ url: currentVideo.gifUrl });
				break;
			case "copyPostPermalink":
				sendResponse({ url: currentVideo.permalink });
				break;
			case "downloadGif":
				downloadURI( currentVideo.gifUrl , currentVideo.name);
				break;
		}
	}
);

// javascript utils to manipulate classes:
// necessary to hack the comments css

function hasClass(ele,cls) {
    return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
    if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
    if (hasClass(ele,cls)) {
        var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
        ele.className=ele.className.replace(reg,' ');
    }
}