console.log("%c¡Es calidad BaI!", "font-size: 50px; font-weight: bold;");

function set_stylesheet(styletitle) {
  opcs.style = styletitle;
  parse();
	var links=document.getElementsByTagName("link");
	var found=false;
	for(var i=0;i<links.length;i++) {
		var rel=links[i].getAttribute("rel");
		var title=links[i].getAttribute("title");
		if(rel.indexOf("style")!=-1&&title) {
			links[i].disabled=true; // IE needs this to work. IE needs to die.
			if(styletitle==title) { links[i].disabled=false; found=true; }
		}
	}
}

function get_active_stylesheet() {
	var links=document.getElementsByTagName("link");
	for(var i=0;i<links.length;i++) {
		var rel=links[i].getAttribute("rel");
		var title=links[i].getAttribute("title");
		if(rel.indexOf("style")!=-1&&title&&!links[i].disabled) return title;
	}
	return null;
}

function check_news() {
  var last_t = opcs.last;
  var items = document.getElementsByClassName('ni');
  var dates = document.getElementsByClassName('ni-d');
  for(var i=0; i<items.length; i++) if(parseInt(items[i].dataset.t) > last_t) {
    items[i].className += ' urgent';
    dates[i].innerHTML = '<img src="/new.gif" style="width:18px;height:7px;"><br />' + dates[i].innerHTML;
  }
  opcs.last = Date.now() / 1000 | 0;
  parse();
}

var lastTime = 0;
var refreshInterval;
var refreshMaxTime = 30;
var refreshTime;
var unread = {};
var last_threads = 0;
var last_serverTime = 0;
var http_request = new XMLHttpRequest();

function loadJSON() {
  stopCounter("...");
  var data_file = "/cgi/api/lastage?time=" + lastTime + "&limit=" + document.getElementById("limit").value;
  http_request.open("GET", data_file, true);
  http_request.send();
}

function setRead(threadId) {
  if (threadId in unread) {
    unread[threadId] = false;
    updatePostList(last_threads, last_serverTime);
  }
}

function updatePostList(threads, serverTime) {
  if (refreshMaxTime <= 120) refreshMaxTime += 5;
  var arrayLength = threads.length;
  if (!arrayLength) return;

  html = "";
  last_threads = threads;
  last_serverTime = serverTime;

  var newposts = 0;
  var newTitle = "Bienvenido a Internet BBS/IB";
  var new_unread = false;
  var news = [];

  for (var i = 0; i < arrayLength; i++) {
    thread = threads[i];
    if (thread.bumped >= lastTime) {
      unread[thread.id] = true;
      news.push('- ' + thread.board_fulln + ': ' + thread.content);
      new_unread = true;
    }
    if (unread[thread.id]) html += '<span class="new">';
    html += '<a href="' + thread.url + '" class="thread" data-brd="' + thread.board_fulln + '" data-unix="' + thread.timestamp + '" data-last="' + thread.bumped + '" data-img="' + thread.thumb + '"><span class="brd">[' + thread.board_name + ']</span> <span class="cont">' + thread.content + '</span> <span class="rep">(' + thread.length + ')</span></a>';
    if (unread[thread.id]) {
      html += '</span>';
      newposts++;
    }
  }
  if (newposts) newTitle = '(' + newposts + ') ' + newTitle;
  if (new_unread) {
    document.getElementById("newposts").style = "color:red";
    notif('Bienvenido a Internet BBS/IB', 'Hay nuevos mensajes:\n' + news.join('\n'));
    refreshMaxTime = 10;
    if (document.getElementById('autosound').checked) {
      document.getElementById("machina").volume = 0.6;
      document.getElementById("machina").play();
    }
  }
  window.parent.document.title = newTitle;
  document.title = newTitle;
  document.getElementById("postlist").innerHTML = html;
}

function notif(title, msg) {
  var n = new Notification(title, { body: msg });
  setTimeout(n.close.bind(n), 10000);
}

function counter() {
  if (refreshTime < 1) loadJSON();
  else {
    refreshTime--;
    document.getElementById("counter").innerHTML = "– " + (refreshTime + 1);
  }
}

function startCounter() {
  refreshTime = refreshMaxTime;
  counter();
  refreshInterval = setInterval(counter, 1000);
}

function stopCounter(str) {
  clearInterval(refreshInterval);
  document.getElementById("counter").innerHTML = str;
}

function autoRefresh(e) {
  if (chk.checked) {
    if (chk_snd) chk_snd.disabled = false;
    Notification.requestPermission();
    lastTime = Math.floor(Date.now() / 1000);
    refreshTime = refreshMaxTime;
    startCounter();
  } else {
    if (chk_snd) chk_snd.disabled = true;
    stopCounter("");
  }
}

http_request.onreadystatechange = function() {
  if (http_request.readyState == 4) {
    var jsonObj = JSON.parse(http_request.responseText);
    if (jsonObj.state == "success") {
      updatePostList(jsonObj.threads, jsonObj.time);
      lastTime = jsonObj.time;
      if (chk.checked) startCounter();
    }
  }
}

function parse() { localStorage.setItem("home", JSON.stringify(opcs)); }

document.addEventListener("DOMContentLoaded", function() {
  window.parent.document.title = document.getElementsByTagName("title")[0].textContent;

  if (localStorage.hasOwnProperty("home")) opcs=JSON.parse(localStorage.getItem("home"));
  else { opcs={"style":"IB","auto":false,"sound":false,"last":0}; parse(); }
  set_stylesheet(opcs.style);
  
  var css = document.getElementById("change_style").getElementsByTagName("a");
  for(var j=0;j<css.length;j++) {
    css[j].addEventListener("click", function(e) { e.preventDefault(); set_stylesheet(this.textContent); });
  }
  document.getElementById("autorefresh").addEventListener("click", function(e) { opcs.auto=!opcs.auto; autoRefresh(); parse(); });
  document.getElementById("autosound").addEventListener("click", function(e) { opcs.sound=!opcs.sound; parse(); });
  check_news();

  chk=document.getElementById("autorefresh");
  chk_snd=document.getElementById("autosound");
  if (opcs.auto) { chk.checked=true; autoRefresh(); } else chk.checked=false;
  if (opcs.sound) chk_snd.checked=true; else chk_snd.checked=false;
});