var cur_url;
var linklist;
var linki;
var is_bbs;
var plimit = 5;
function getPostRange(t, n) {
  var posts,
    replies,
    s,
    ss,
    ee,
    rev = false;
  posts = [];
  replies = t.getElementsByClassName("reply");
  s = n.split("-");
  ss = parseInt(s[0]);
  ee = ss;
  if (s.length == 2) ee = parseInt(s[1]);
  if (ee < ss) {
    tmp = ss;
    ss = ee;
    ee = tmp;
    rev = true;
  }
  for (j = 0; j < replies.length; j++) {
    num = parseInt(replies[j].dataset.n);
    if (num > ee) break;
    if (num >= ss && num <= ee) {
      if (rev) posts.unshift(replies[j]);
      else posts.push(replies[j]);
    }
  }
  return posts;
}
function findAncestor(el) {
  while (
    (el = el.parentElement) &&
    !el.className.startsWith("thread") &&
    !el.className.startsWith("cont")
  );
  return el;
}
function getPostDivs(e) {
  if (is_bbs) {
    divs = [];
    t = findAncestor(e);
    s = e.getAttribute("href").split("/");
    r = s[s.length - 1];
    rs = r.split(",");
    linki = 0;
    for (i = 0; i < rs.length; i++) {
      divs.push.apply(divs, getPostRange(t, rs[i]));
    }
    return divs;
  } else {
    ele = document.getElementById(
      "reply" + e.getAttribute("href").split("#")[1]
    );
    return [ele];
  }
}
function get_pid(e) {
  return is_bbs ? e.dataset.n : e.id.substr(5);
}
function fill_links(e) {
  var divs = getPostDivs(e);
  if (!divs[0]) return;

  this_id = get_pid(e.parentNode.parentNode);

  for (i = 0; i < divs.length; i++) {
    tid = get_pid(divs[i]);
    if (linklist[tid]) continue;
    if (this_id == tid) continue;
    t = is_bbs ? divs[i].getElementsByTagName("h4")[0] : divs[i];
    bl = document.createElement("a");
    bl.href = cur_url + (is_bbs ? "/" : "#") + this_id;
    bl.textContent = ">>" + this_id;
    bl.addEventListener("mouseover", who_are_you_quoting, false);
    bl.addEventListener("mouseout", remove_quote_preview, false);
    if (!(qb = t.getElementsByClassName("quoted")[0])) {
      qb = document.createElement(is_bbs ? "span" : "div");
      qb.className = "quoted";
      qb.textContent = " Citado por: ";
      if (is_bbs) {
        t.insertBefore(qb, t.getElementsByClassName("del")[0]);
        t.insertBefore(
          document.createTextNode(" "),
          t.getElementsByClassName("del")[0]
        );
      } else {
        p = t.getElementsByTagName("blockquote");
        p[p.length - 1].insertAdjacentHTML("afterend", qb.outerHTML);
      }
      t.getElementsByClassName("quoted")[0].appendChild(bl);
    } else {
      qb.appendChild(document.createTextNode(" "));
      qb.appendChild(bl);
    }
    linklist[tid] = true;
  }
}
function who_are_you_quoting(e) {
  var parent, d, clr, src, cnt, left, top, width, maxWidth;
  e = e.target || window.event.srcElement;
  var divs = getPostDivs(e);
  if (!divs[0]) return;

  maxWidth = 500;
  cnt = document.createElement("div");
  cnt.id = "q-p";
  width = divs[0].offsetWidth;
  if (width > maxWidth) {
    width = maxWidth;
  }

  for (i = 0; i < divs.length && i < plimit; i++) {
    src = divs[i].cloneNode(true);
    cnt.appendChild(src);
  }
  left = 0;
  top = e.offsetHeight + 1;
  parent = e;
  do {
    left += parent.offsetLeft;
    top += parent.offsetTop;
  } while ((parent = parent.offsetParent));
  if ((d = document.body.offsetWidth - left - width) < 0) left += d;
  cnt.setAttribute("style", "left:" + left + "px;top:" + top + "px;");
  document.body.appendChild(cnt);
}
function remove_quote_preview(e) {
  var cnt;
  if ((cnt = document.getElementById("q-p"))) document.body.removeChild(cnt);
}
/*function goTo(e) {
  e.preventDefault();
  var pst = this.textContent.split(/[-,]/)[0];
  pst = "r"+ pst.slice(2);
  pst = document.getElementById(pst);
  if (pst) pst.scrollIntoView(); 
}*/
function quotePreview() {
  if (localStorage.getItem("shobon_on") == "false") {
    return;
  }
  if (
    localStorage.getItem("shobon_preview") == "false" &&
    localStorage.getItem("shobon_backlink") == "false"
  ) {
    return;
  }

  var i, q, replies, quotes;

  if (document.body.className && document.body.className != "res")
    is_bbs = true;
  else is_bbs = false;

  if (is_bbs) replies = document.getElementsByClassName("msg");
  else replies = document.getElementsByTagName("blockquote");

  urls = window.location.pathname.split("/");
  cur_url = urls[0] + "/" + urls[1] + "/" + urls[2] + "/" + urls[3];

  for (x = 0; x < replies.length; x++) {
    quotes = replies[x].getElementsByTagName("a");
    linklist = {};

    for (i = 0; i < quotes.length; i++) {
      q = quotes[i];
      if (q.textContent.length < 3 || !q.textContent.startsWith(">>")) continue;

      if (localStorage.getItem("shobon_preview") != "false") {
        q.addEventListener("mouseover", who_are_you_quoting, false);
        q.addEventListener("mouseout", remove_quote_preview, false);
      }

      if (localStorage.getItem("shobon_backlink") != "false") {
        fill_links(q);
      }
    }
  }
  /*  if (document.body.className === "threadpage") {
    for (x = 0; x < replies.length; x++) {
      var q = replies[x].getElementsByTagName("a");
      for(var j=0;j<q.length;j++) {
        if(q[j].textContent.startsWith(">>")) q[j].addEventListener("click", goTo, false);
      }
    }
  }*/
}
document.addEventListener("DOMContentLoaded", quotePreview, false);