///////////////////////////////////////////////////////////////////////////////
// https://github.com/ded/domready
///////////////////////////////////////////////////////////////////////////////

var domReady = (function() {

  var fns = [], fn, f = false
    , doc = document
    , testEl = doc.documentElement
    , hack = testEl.doScroll
    , domContentLoaded = 'DOMContentLoaded'
    , addEventListener = 'addEventListener'
    , onreadystatechange = 'onreadystatechange'
    , loaded = /^loade|c/.test(doc.readyState)
    , ready

  function flush(f) {
    loaded = 1
    while (f = fns.shift()) f()
  }

  doc[addEventListener] && doc[addEventListener](domContentLoaded, fn = function () {
    doc.removeEventListener(domContentLoaded, fn, f)
    flush()
  }, f)


  hack && doc.attachEvent(onreadystatechange, (fn = function () {
    if (/^c/.test(doc.readyState)) {
      doc.detachEvent(onreadystatechange, fn)
      flush()
    }
  }))

  return (ready = hack ?
    function (fn) {
      self != top ?
        loaded ? fn() : fns.push(fn) :
        function () {
          try {
            testEl.doScroll('left')
          } catch (e) {
            return setTimeout(function() { ready(fn) }, 50)
          }
          fn()
        }()
    } :
    function (fn) {
      loaded ? fn() : fns.push(fn)
    });
})();

///////////////////////////////////////////////////////////////////////////////
// Tender
///////////////////////////////////////////////////////////////////////////////

(function(){

  function queryValueFor(url, name) {
    var name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]"),
        regexS = "[\\?&]"+name+"=([^&#]*)",
        regex = new RegExp(regexS),
        results = regex.exec(url)

    if(results == null) return "";
    return results[1];
  }

  var getHost = function(){
    var scripts = document.getElementsByTagName("script");
    for(var i=0; i<scripts.length; i++){
      var script = scripts[i].src;
      if(script.match(/tender_widget\.js(\?.*)?$/)){
        var host = script.substring(0, script.indexOf("tender_widget.js"));
      }
    }
    return host;
  }

  var getOptions = function() {
    var query = {}
    var scripts = document.getElementsByTagName("script");
    for(var i=0; i<scripts.length; i++){
      var script = scripts[i].src;
      if(script.match(/tender_widget\.js(\?.*)?$/)){
        query['location'] = queryValueFor(script, 'location')
        query['category'] = queryValueFor(script, 'category_id')
      }
    }
    return query;
  }

  var visible = false;
  var initialized = false;
  var host = getHost();
  var options = getOptions()
  if (!host || host == "") host = "http://help.tenderapp.com/";


  var showWidget = function(){
    if (!initialized) initialize();
    else show();
  }

  var show = function(){
    document.getElementById('tender_window').style.display = '';
    document.getElementById('tender_toggler').style.display = 'none';
    visible = true;
  }

  var hide = function(){
    document.getElementById('tender_window').style.display = 'none';
    if (typeof(Tender) == "undefined" || !Tender.hideToggle) document.getElementById('tender_toggler').style.display = '';
    visible = false;
  }

  var initialize = function(){
    var element = document.createElement('div');
    var url     = host + 'widget/discussion/new?r=' + Math.random();
    if (typeof(Tender) != "undefined") {
      if (Tender.home == 'kb' || Tender.hide_discussion)
                                        url = host + 'widget/faqs?'
      if (Tender.sso)                   url += "&sso=" + encodeURIComponent(Tender.sso)
      if (Tender.widgetEmail)           url += '&email=' + encodeURIComponent(Tender.widgetEmail)
      if (Tender.forcePrivate === true) url += '&private=1'
      if (Tender.hide_kb)               url += "&hide_kb=1"
      if (Tender.hide_discussion)       url += "&hide_discussion=1"
      if (Tender.category)              url += "&category=" + encodeURIComponent(Tender.category)
    }

    var wrapper = '<div id="tender_window"><a href="#" id="tender_closer">Close</a><div id="tender_frame"><iframe src="' + url + '" scrolling="no" frameborder="0" width="100%" height="100%"></iframe></div></div>';
    element.innerHTML = wrapper;
    var iframe = element.getElementsByTagName('iframe')[0];
    document.body.appendChild(element);
    var close_link = document.getElementById('tender_closer');
    close_link.onclick = function(){
      hide();
      return false;
    }

    initialized = true;
    show();
  }

  var styles = "#tender_window{ position:absolute; top:20px; left:50%; margin-left:-340px; width:680px; height:615px; padding:3px; background:url(" + host + "images/widget/overlay_back.png); z-index:9999; }";
  styles +=    "#tender_window iframe{ border:none; width:100%; height:100%; } ";
  styles +=    "#tender_window #tender_frame{ width:100%; height:100%; background:url(" + host + "images/widget/loader.gif) 50% 50% no-repeat #fff; } ";
  styles +=    "#tender_closer{ position:absolute; top:18px; right:18px; color:#fff; font-family:Helvetica, Arial, sans-serif; font-size:12px; font-weight:bold; text-decoration:none; border:none; } ";
  styles +=    "#tender_closer{ color: #80B3CC }";
  styles +=    "#tender_toggler{ position:absolute; top:100px; right:0px; width:33px; height:105px; padding:3px 0 3px 3px; background:url(" + host + "images/widget/overlay_back.png); } ";
  styles +=    "#tender_toggler_link{ display:block; width:100%; height:100%; text-decoration:none; border:none; text-indent:-9999px; background: #006699 url(" + host + "images/widget/tab_text_" + options['location'] + ".gif) !important; } "


  if(options['location'] == 'left') {
    styles += "#tender_toggler{ top:100px; left:0px; width:33px; height:105px; padding:3px 3px 3px 0;  } ";
  } else if(options['location'] == 'top') {
    styles += "#tender_toggler{ top:0; left:100px; width:105px; height:33px; padding:0 3px 3px 3px;";
  } else if(options['location'] == 'bottom') {
    styles += "#tender_toggler{ bottom:0; top:inherit; left:100px; width:105px; height:33px; padding:3px 3px 0 3px;";
  }

  domReady(function() {
    var toggler = document.createElement('div');
    toggler.innerHTML = '<div id="tender_toggler"><a href="#" id="tender_toggler_link">Help &amp; Support</a></div>';
    document.body.appendChild(toggler);
    document.getElementById('tender_toggler_link').onclick = function(){
      showWidget();
      return false;
    }

    if (typeof(Tender) != "undefined" && Tender.widgetToggles){
      for(var i=0; i<Tender.widgetToggles.length; i++){
        var toggle = Tender.widgetToggles[i];
        if (toggle == null) continue;
        toggle.onclick = function(){
          showWidget();
          return false;
        }
      }
    }

    if (typeof(Tender) != "undefined" && Tender.hideToggle){
      var t = document.getElementById('tender_toggler');
      t.style.display = 'none';
    }

    var style = document.createElement('style');
    style.setAttribute("type", "text/css");
    style.setAttribute("charset", "utf-8");
    try{ // For safari's sake
      style.appendChild(document.createTextNode(styles));
      document.getElementsByTagName("head").item(0).appendChild(style);
    }catch(e){ }

    // For IE
    if(document.createStyleSheet) {
      document.createStyleSheet(host + 'tender_widget_styles.css');
    }
  });

})();