// ==UserScript==
// @name           NicoNicoFilterWordFilter
// @namespace      http://web.zgo.jp/
// @include        http://www.nicovideo.jp/watch/*
// ==/UserScript==

(function(){
var commentXML;
var wrapper;//Wrraper使用してるかhttp://tinyurl.com/6fyyqv
var results = new Array();//投稿者フィルターの配列
var flvp = getFlashMovieObject("flvplayer");
var footer = getFirstElementByXPath('//div[@id="flvplayer_container"]',document);


function getFilter(){
	var player_info = unsafeWindow.document.getElementById('flvplayer').GetVariable('o');;
	/* for flvplayer_wrapper */
	if (player_info == "base"){
		wrapper = true;
		player_info = unsafeWindow.document.getElementById('flvplayer').GetVariable('nico.o');
}
	var user = {responseText : decodeURIComponent(player_info)};

	if(user.responseText){
		return user.responseText;
	}else{setTimeout(function() { getFilter(); }, 300);}
	}

//コメントデータの取得
function getxml(res){
 if(/thread_id=(.+?)&l=(.+?)&.+&ms=(.+?)&/.test(res.responseText)){
  var thread_id = RegExp.$1;
  var l = RegExp.$2;

  var from = -250;
  if (l >= 300) {
    from = -500;
    if (l >= 600) {
    from = -1000;
    }
  }
  var url = decodeURIComponent(RegExp.$3);
  GM_xmlhttpRequest({
   method: 'POST',
   headers: { 'Content-type': 'text/xml' },
   url: url,
   data: '<thread res_from="'+from+'" version="20061206" thread="' + thread_id + '" />',
   onload: xmlParser,
   onerror: function(res){ GM_log(res.status + ':' + res.statusText); }
  });
 }
}

//フィルターワード抽出
function xmlParser(res){
	commentXML = (new DOMParser).parseFromString(res.responseText, "application/xml");
	//GM_log(commentXML);

	if(commentXML){
		//フィルターワードを含む情報の受け取り
		var o = getFilter();
		//GM_log(o);

			if (/ng_up=(.+)&ng/.test(o)) {
            filters = decodeURIComponent(RegExp.$1).split('&');
			}
			//alert(filters);
            for (var j = 0; j < filters.length; j++) {
               		filters[j].match(/(.+)=(.+)/);
					results[j] = RegExp.$1;
					//resultにフィルターにかかるワードが入る。
			}
		}
		//GM_log(results);//フィルターにかかるワード配列
		commentDel(results);
}

function commentDel(filterWords){
	//受け取るのはNGワードの配列
	//GM_log("受け取る配列" + filterWords);
		var chat = commentXML.getElementsByTagName("chat");
		var num = chat.length;//コメントの個数
			//GM_log("コメントの取得総数は" + num);
	    var flag = false;
			//GM_log("フィルタの数は" + filterWords.length);
	for(var i = 0;i < num;i++){

	    flag = false;
		for(var j = 0;j < filterWords.length;j++){
			chatText = chat[i].textContent;
			chatWord = new RegExp(filterWords[j], "g");
				//GM_log("chatWord " + chatWord);
			if(chatWord.test(chatText)){
				flag = true;
				//GM_log("flag"+ i + flag);
				break;
			}
		}

		if(flag){
		//GM_log(wrapper);
    	if(wrapper) {
    	 	flvp.SetVariable('nico.Messages.'+ i +'._deleted',1);
     	} else {
      		flvp.SetVariable('Messages.'+ i +'._deleted',1);
     	}
			//GM_log("ignore "+num+" no "+no+ " mail " +mail);  
    	}
	}
}


//フィルター開始のボタンの関数
function getFirstElementByXPath(xpath, node) {
	var node = node || document;
	var result = document.evaluate(xpath, node, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
	return result.singleNodeValue ? result.singleNodeValue : null;
}
function getFlashMovieObject(movieName){
	if (unsafeWindow.document[movieName]) {
		return unsafeWindow.document[movieName];
 	}
}
function addCheckBox2(elm, chkbox, text){
 chkbox.type = 'checkbox';
 span  = document.createElement('span');
 span.setAttribute('style','background:#CCCCCC');
 span.appendChild(chkbox);
 span.appendChild(document.createTextNode(text));
 elm.parentNode.insertBefore(span ,elm);
}

//ボタンの作成

 var button = document.createElement('input');
 button.type = "submit";
 button.value = "filter";
 button.id = "filter";
 button.addEventListener("click", function(){startFlag();}, false);
 footer.parentNode.insertBefore(button,footer);




//実行の始まり
function startFlag(){
if(/watch\/([^/]+)$/.test(location.href)){
 var video_id = RegExp.$1;
 GM_xmlhttpRequest({
  method: 'GET',
  url: 'http://www.nicovideo.jp/api/getflv/' + video_id,
  onload: getxml,
  onerror: function(res){ GM_log(res.status + ':' + res.statusText); }
 });
}
}
})();