// ==UserScript==
// @name        Facebook Ticker Filter
// @namespace   com.facebook.tickerfilter
// @description Add a fild for filtering ticker events
// @include     https://www.facebook.com/*
// @include     http://www.facebook.com/*
// @include     https://*/facebook.com/*
// @include     http://*.facebook.com/*
// @require     http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js
// @version     1
// @grant       none
// ==/UserScript==
//
/*jslint browser:true*/
(function () {
  	var downcount = 0;
    var targetIDs = [
      'cecile.tostivint.9', // target
      'camillebriant',      // target
      'lise.duchatelet',    // target
      'BlandineSdAsterya',  // target
      'perrine.bouveret.9', // target relative (cecile.tostivint.9)
      'peeters7',           // interest
      'c.grusondaniel',     // interest
      'gayane.adourian',    // interest
      'amelie.valentin.75', // relative (cecile.tostivint.9)
      'jessehaug',          // relative (cecile.tostivint.9)
      'sanjarbek.khodjaev', // relative (cecile.tostivint.9)
      'morgane\.parma',     // relative (cecile.tostivint.9)
    ];
    var targetRE = new RegExp('/(' + targetIDs.join('|') + ')');
  	//var targetRE = /\/(cecile\.tostivint\.9)/;
  	var scrollTicker;
  	scrollTicker = function () {
    	var ticker;
    	var evt;
    	var scroll;
    	//ticker = document.getElementById('pagelet_ticker');
    	ticker = document.getElementsByClassName('ticker_container').item(0).children.item(0).children.item(0);
    	console.log(ticker);
    	ticker.style.background = 'red';
    	console.log('begin com.facebook.scrollTicker');
    	downcount += 1;
    	downcount = downcount % 100;
    	scroll = 20;
    	if (downcount === 0) {
      	scroll *= -1;
    	}
    	evt = document.createEvent('UIEvents');
    	// creates a scroll event that bubbles, can be cancelled,
    	// and with its view and detail property initialized to window and 1,
    	// respectively
    	evt.initUIEvent('scroll', true, true, window, scroll);
    	ticker.dispatchEvent(evt);
    	console.log('debug1 com.facebook.scrollTicker');

    		/*
    	evt = document.createEvent('MouseEvents');
    	evt.initMouseEvent('DOMMouseScroll', // in DOMString typeArg,
    	true, // in boolean canBubbleArg,
    	true, // in boolean cancelableArg,
    	window, // in views::AbstractView viewArg,
    	10, // in long detailArg,
    	0, // in long screenXArg,
    	0, // in long screenYArg,
    	0, // in long clientXArg,
    	0, // in long clientYArg,
    	0, // in boolean ctrlKeyArg,
    	0, // in boolean altKeyArg,
    	0, // in boolean shiftKeyArg,
    	0, // in boolean metaKeyArg,
    	0, // in unsigned short buttonArg,
    	null
    	// in EventTarget relatedTargetArg
    	);
    	ticker.dispatchEvent(evt);
    	console.log('debug2 com.facebook.scrollTicker');
    	*/
    		/*
    	evt = document.createEvent('MouseEvents');
    	evt.initEvent('mousewheel', true, true);
    	evt.wheelDelta = scroll;
    	ticker.dispatchEvent(evt);
    	*/
    	console.log('end com.facebook.scrollTicker');
  	};

  	function cleanStory(story, protection) {
    	var hidden = 0;
    	var storyLink;
    	storyLink = story.children.item(0);
    	if (targetRE.test(storyLink.href)) {
      		console.log(storyLink.href);
      		hidden = 1;
    	} else if (story.style.display !== 'none') {
      		// we must decide either to hide or to count
      		if (!protection) {
        		story.style.display = 'none';
      		} else {
        		hidden = 1;
      		}
    	}
    	return hidden;
  	}
  	// magic filtering

  	function cleanTicker() {
    	//var ticker = document.getElementById('pagelet_ticker');
    	var tickerStories;
    	var story_idx;
    	var story;
    	var visibleCount;
    	var tickerLimit;

    	tickerLimit = 11;
    	visibleCount = 0;
    	console.log('begin com.facebook.cleanticker');
    	tickerStories = document.getElementsByClassName('fbFeedTickerStory');
    	for (story_idx = tickerStories.length - 1; story_idx >= 0; story_idx--) {
      		story = tickerStories.item(story_idx); //.children[0];
      		visibleCount += cleanStory(story, (visibleCount >= tickerLimit));
    	}
    	//for (story_idx = 0 ; story_idx < tickerStories.length; story_idx++) {
    	//story = tickerStories.item(story_idx); //.children[0];
    	//
    	//visibleCount += cleanStory(story, (visibleCount >= tickerLimit));
    	//}
    	//console.log('end com.facebook.tickerfilter.cleanTicker');
    	// send scrolldown events to ticker...

    	console.log('end com.facebook.cleanticker');
  	}
  	window.setInterval(cleanTicker, 1000);
  	window.setInterval(scrollTicker, 300);
}());