window.BGLinks = (function() {
  var that = {};

  // can be set like BGLinks.parameter
  that.version = "NVT";
  that.clickTooltip = false;
  that.apocrypha = false;
  that.showTooltips = true;
  that.host = "www.biblegateway.com";

  var showTimer = 0;
  var hideTimer = 0;
  var container;
  var addedCSS = false;
  var setupRun = false;
  var delay = 1000;
  var bgHost;
  var toolsHost;
  var cdHost;
  var browser = navigator.appVersion;
  var book_string = "G[eê]nesis|Gen?|Gn|[ÊE]xodo|Exod?|[ÊE]x|Lev[ií]tico|Le?v|N[úu]meros|Nu?m|Nm|Deuteron[ôo]mio|Deut?|Dt|Josu[ée]|Js|Ju[íi]zes|Jz|Rute|Rt|(?:1|i|2|ii) ?Samuel|(?:1|i|2|ii) ?Sm|(?:1|i|2|ii) ?Reis|(?:1|i|2|ii) ?Rs|(?:1|i|2|ii) ?Cr[ôo]nicas|(?:1|i|2|ii) ?Cr|(?:1|i|2|ii) ?Cr|Esdras|Ed||Neemias|Ne|Ester|Et|Jó|Salmos|Sl|Prov[ée]rbios|Proverbios|Pv|Eclesiastes|Ec|C[âa]nticos|Ct|Cnt|Cantares|Isa[íi]as|Is?|Jeremias|J(?:e?)r|Lamentacoes|Lamentações|L(?:a?)m|Ezequiel|Ez(?:e?)|Daniel|Da?n|Da|Oséias|Oseias|Os|Joel|Jl|Am[óo]s|Am|Obadias|Ob(?:ad?)?|Jonas|Jn|Miqu[ée]ias|Mq|Naum|Na|Habacuque|Hab|Hc|Sofonias|Sf|Ag(?:eu?)?|Zacarias|Zc|Malaquias|Ml|Mateus|Mat?|Mt|Mark|Marcos|Mc|Lucas|Lc|Luc?|Jo[ãa]o|Jo[ãa]|Jo|At(?:os?)?|Romanos|Rm|(?:1|i|2|ii) ?Cor[íi]ntios|(?:1|i|2|ii) ?Co|(?:1|i|2|ii) ?Cor|G[áa]latas|G[áa]l?|Gl|Ef[ée]sios|Ef?|Filipenses|Fp|Colossenses|Col|Cl|(?:1|i|2|ii) ?Tessalonicenses|(?:1|i|2|ii) ?T(?:e?)s?|(?:1|i|2|ii) ?Tim[óo]teo|(?:1|i|2|ii) ?T(?:i?)m|Tito|Tt|Filemon|Fm|Hebreus|H(?:e?)b?|Tiago|Tg|Jas|(?:1|i|2|ii) ?Pedro|(?:1|i|2|ii) ?Pe?|(?:1|i|2|ii|3|iii) ?Jo[ãa]o|(?:1|i|2|ii|3|iii) ?Jo|Judas?|Jd|Apocalipse?|Ap|Revela[çc][aã]o?|Rv";

  var apoc_books =
    "|Tobias?|To?b|Judi(?:te?)?|Jdt|(?:1|2) ?Mac(?:abeus)?|(?:1|2) ?Ma?|Sabedor[íi]a|Wi|Wi?s|Eclesi[áa]stico|Sir|Ba(?:ruque?)?|Ba?r";

  that.linkVerses = function() {
    updateURLs();
    insertBiblerefs(document.body);
    if (that.showTooltips === true) {
      addBiblerefListeners();
    }
    setup();
  };

  var updateURLs = function() {
    bgHost = "https://" + that.host;
    toolsHost = bgHost + "/share/tooltips/data";
    cdHost = bgHost + "/public/link-to-us/tooltips";
  };

  var insertBiblerefs = function(node) {
    var new_nodes;
    if (node.nodeType === 3) {
      new_nodes = searchNode(node, 0);
      return new_nodes;
    } else if (
      node.tagName != undefined &&
      node.tagName.match(/^(?:a|h\d|img|pre|input|option)$/i)
    ) {
      return null;
    } else {
      var children = node.childNodes;
      var i = 0;
      while (i < children.length) {
        new_nodes = insertBiblerefs(children[i]);
        i += new_nodes + 1;
      }
    }
    return null;
  };

  var searchNode = function(node, inserted_nodes) {
    var newTxtNode;
    var apoc_string = that.apocrypha === true ? apoc_books : "";
    var unicode_space =
      "[\\u0020\\u00a0\\u1680\\u2000-\\u200a\\u2028-\\u202f\\u205f\\u3000]";
    //finds book and chapter for each verse that been separated by &,and,etc...
    var book_chap =
      "((?:(" +
      book_string +
      apoc_string +
      ")(?:.)?" +
      unicode_space +
      "*?)?(?:(\\d*):)?(\\d+(?:(?:ff|f|\\w)|(?:\\s?(?:-|–|—)\\s?\\d+)?)))([^a-z0-9]*)";
    var regex_string =
      "(?:" +
      book_string +
      apoc_string +
      ")(?:.)?" +
      unicode_space +
      "*?\\d+:\\d+(?:ff|f|\\w)?(?:\\s?(?:(?:(?:-|–|—)\\s?(?:(?:" +
      book_string +
      apoc_string +
      ")(?:.)?\\s)?)|(?:(?:,|;|&amp;|&|and|cf\\.|cf)))\\s?(?:(?:(?:vv.|vs.|vss.|v.) ?)?\\d+\\w?)(?::\\d+\\w?)?)*";
    var regex = new RegExp(regex_string, "i");
    var verse_match = node.nodeValue.match(regex);
    if (verse_match == null) {
      return inserted_nodes;
    } else {
      var text = node.nodeValue;
      var before_text = text.substr(0, text.indexOf(verse_match[0]));
      var after_text = text.substr(
        text.indexOf(verse_match[0]) + verse_match[0].length
      );
      if (before_text.length > 0) {
        newTxtNode = document.createTextNode(before_text);
        node.parentNode.insertBefore(newTxtNode, node);
        inserted_nodes++;
      }

      var book_chap_regex = new RegExp(book_chap, "gi");
      var book;
      var chapter;
      var verse;
      var matched;

      while ((matched = book_chap_regex.exec(verse_match[0]))) {
        // break up what may be multiple references into links.
        if (matched[2] != "" && matched[2] != null) {
          book = matched[2];
        }
        if (matched[3] != "" && matched[3] != null) {
          chapter = matched[3];
        }
        verse = matched[4];
        var newLinkNode = document.createElement("a");
        newLinkNode.className = "bibleref";
        newLinkNode.target = "_BLANK";
        var passage = book + " " + chapter + ":" + verse;
        newLinkNode.href =
          bgHost +
          "/passage/?search=" +
          passage +
          "&version=" +
          that.version +
          "&src=tools";
        newLinkNode.innerHTML = matched[1];
        if (that.clickTooltip === true) {
          newLinkNode.onclick = function() {
            return false;
          };
        }
        node.parentNode.insertBefore(newLinkNode, node);
        inserted_nodes++;
        if (matched[6] != "") {
          newTxtNode = document.createTextNode(matched[5]);
          node.parentNode.insertBefore(newTxtNode, node);
          // do we need to update inserted_nodes with this?
        }
      }

      if (after_text.length > 0) {
        newTxtNode = document.createTextNode(after_text);
        node.parentNode.insertBefore(newTxtNode, node);
        node.parentNode.removeChild(node);
        inserted_nodes = searchNode(newTxtNode, inserted_nodes + 1);
      } else {
        node.parentNode.removeChild(node);
      }
    }
    return inserted_nodes;
  };

  var addCSS = function() {
    if (!addedCSS) {
      var css = document.createElement("link");
      css.type = "text/css";
      css.rel = "stylesheet";
      if (browser.search("MSIE 6.0") != -1) {
        browser = "ie6";
        css.href = cdHost + "/theme/bglinks-ie.css";
      } else {
        css.href = cdHost + "/theme/popover.css";
      }
      css.media = "screen";
      var n1 = document.getElementsByTagName("head")[0].childNodes[0];
      n1.parentNode.insertBefore(css, n1);
      addedCSS = true;
    }
  };

  var addBiblerefListeners = function() {
    var links = document.getElementsByTagName("a");
    for (var i = 0; i < links.length; i++) {
      var link = links[i];

      if (link.className && link.className.indexOf("bibleref") != -1) {
        if (that.clickTooltip !== true) {
          addListener(link, "mouseover", linkMouseover);
          addListener(link, "mouseout", linkMouseout);
        } else {
          addListener(link, "click", toggleTooltip);
        }
      }
    }
  };

  var addListener = function(listen_object, action, callback) {
    if (listen_object.addEventListener) {
      if (action == "mouseover") {
        listen_object.addEventListener("mouseover", callback, false);
      } else if (action == "mouseout") {
        listen_object.addEventListener("mouseout", callback, false);
      } else if (action == "click") {
        listen_object.addEventListener("click", callback, false);
      }
    } else if (listen_object.attachEvent) {
      if (action == "mouseover") {
        listen_object.attachEvent("onmouseover", callback);
      } else if (action == "mouseout") {
        listen_object.attachEvent("onmouseout", callback);
      } else if (action == "click") {
        listen_object.attachEvent("onclick", callback);
      }
    } else {
      if (action == "mouseover") {
        listen_object.onmouseover = callback;
      } else if (action == "mouseout") {
        listen_object.onmouseout = callback;
      } else if (action == "click") {
        listen_object.onclick = callback;
      }
    }
  };

  var toggleTooltip = function(e) {
    if (!e) {
      e = window.event;
    }

    var link = e.target || e.srcElement;
    var reference;
    var bibleref;
    if ((bibleref = link.getAttribute("data-bibleref"))) {
      reference = bibleref;
    } else {
      reference = link.href.match(/search=(.*?)(?:&.*)?$/)[1];
    }

    var id = reference.replace(/%20| /g, "");
    id = reference.replace(/:/g, "_");
    var tooltip = document.getElementById("bg_popup-" + id);
    if (tooltip === null || tooltip.style.display == "none") {
      showTooltip(e);
    } else {
      hideTooltip(e);
    }
  };

  var showTooltip = function(e, link) {
    if (!e) {
      e = window.event;
    }
    if (link == null) {
      link = e.currentTarget || e.target || e.srcElement;
    }
    var reference;
    var bibleref;
    var tooltip_loc;

    if ((bibleref = link.getAttribute("data-bibleref"))) {
      reference = bibleref;
    } else {
      reference = decodeURIComponent(
        link.href.match(/search=(.*?)(?:&.*)?$/)[1]
      );
    }

    var id = reference.replace(/%20| |\+|[^\x00-\x80]/g, "");
    id = id.replace(/:/g, "_");
    id = id.replace(/ /g, "");
    var tooltip = document.getElementById("bg_popup-" + id);
    hideAllTooltips(e);
    if (tooltip === null) {
      tooltip = getTooltip(reference, link);
    } else {
      tooltip_loc = tooltipLocation(link);
      tooltip.style.left = tooltip_loc.offsetX + "px";
      tooltip.style.top = tooltip_loc.offsetY + "px";
      tooltip.style.display = "block";
    }
  };

  var hideTooltip = function(e) {
    if (!e) {
      e = window.event;
    }
    var link = e.target || e.srcElement;
    var reference;
    var bibleref;
    if ((bibleref = link.getAttribute("data-bibleref"))) {
      reference = bibleref;
    } else {
      reference = link.href.match(/search=(.*?)(?:&.*)?$/)[1];
    }

    reference = reference.replace(/%20| /g, "");
    reference = reference.replace(/:/g, "_");

    var tooltip = document.getElementById("bg_popup-" + reference);
    if (tooltip) {
      tooltip.style.display = "none";
    }
  };

  var hideAllTooltips = function() {
    var divs = container.children;
    for (var i = 0; i < divs.length; i++) {
      divs[i].style.display = "none";
    }
  };

  var linkMouseover = function(e) {
    if (!e) {
      e = window.event;
    }
    var target = e.currentTarget || e.target;
    if (target.nodeName.toLowerCase() == "a") {
      window.clearTimeout(showTimer);
      showTimer = window.setTimeout(function() {
        showTooltip(e, target);
      }, delay);
    }
  };

  var linkMouseout = function(e) {
    if (!e) {
      e = window.event;
    }
    if (e.target.nodeName.toLowerCase() == "a" && showTimer) {
      window.clearTimeout(showTimer);
      window.clearTimeout(hideTimer);
      hideTimer = window.setTimeout(function() {
        hideTooltip(e);
      }, delay);
    }
  };

  var tooltipMouseover = function(e) {
    if (!e) {
      e = window.event;
    }
    var relNode = e.relatedTarget || e.fromElement;
    while (
      relNode &&
      relNode != null &&
      (!relNode.className ||
        relNode.className.indexOf("bg_popup-outer") == -1) &&
      relNode.nodeName.toLowerCase() != "body"
    ) {
      relNode = relNode.parentNode;
    }
    if (
      relNode &&
      relNode.className &&
      relNode.className.indexOf("bg_popup-outer") != -1
    )
      return;
    window.clearTimeout(showTimer);
    window.clearTimeout(hideTimer);
  };

  var tooltipMouseout = function(e) {
    if (!e) {
      e = window.event;
    }
    var relNode = e.relatedTarget || e.toElement;
    while (
      relNode &&
      relNode != null &&
      (!relNode.className ||
        relNode.className.indexOf("bg_popup-outer") == -1) &&
      relNode.nodeName.toLowerCase() != "body"
    ) {
      relNode = relNode.parentNode;
    }
    if (
      relNode &&
      relNode.className &&
      relNode.className.indexOf("bg_popup-outer") != -1
    )
      return;
    window.clearTimeout(hideTimer);
    hideTimer = window.setTimeout(function() {
      hideAllTooltips(e);
    }, delay);
  };

  var createContainer = function() {
    container = document.createElement("div");
    container.id = "bg_popup-container";
    document.body.appendChild(container);
  };

  var getTooltip = function(reference, link) {
    var tooltip = document.createElement("div");
    tooltip.style.display = "none";
    tooltip.className = "bg_popup bg_popup-outer";
    var tooltip_loc = tooltipLocation(link);
    tooltip.style.top = tooltip_loc.offsetY + "px";
    tooltip.style.left = tooltip_loc.offsetX + "px";
    var id = "bg_popup-" + reference.replace(/(?:%20)|\+|[^\x00-\x80]/g, "");

    id = id.replace(/:/g, "_");
    id = id.replace(/ /g, "");
    tooltip.id = id;
    tooltip.innerHTML =
      '<div class="bg_popup-header"><div class="bg_popup-header_title"><strong>' +
      reference.replace(/%20/g, " ") +
      '</strong></div></div><div class="bg_popup-content"><div class="bg_popup-spinner"><img alt="loading" src="' +
      cdHost +
      '/theme/images/tools/spinner.gif"/></div></div><div class="bg_popup-footer"><a class="bg_popup-bglogo" href="' +
      bgHost +
      '/" target="_blank"></a></div>';
    tooltip.style.display = "block";
    addCloseButton(tooltip);

    tooltip = container.appendChild(tooltip);
    if (that.clickTooltip !== true) {
      addListener(tooltip, "mouseover", tooltipMouseover);
      addListener(tooltip, "mouseout", tooltipMouseout);
    }

    var remote_passage = document.createElement("script");
    remote_passage.type = "text/javascript";
    remote_passage.src =
      toolsHost +
      "/?search=" +
      reference +
      "&version=" +
      that.version +
      "&callback=BGLinks.updateTooltip";
    remote_passage.id =
      "bg_remote_passage_script-" +
      reference.replace(/(?:%20)|\+|[^\x00-\x80]/g, "");
    remote_passage.id = remote_passage.id.replace(/:/g, "_");
    remote_passage.id = remote_passage.id.replace(/ /g, "");
    var hook = document.getElementsByTagName("script")[0];
    hook.parentNode.insertBefore(remote_passage, hook);

    return tooltip;
  };

  that.updateTooltip = function(tooltip_content) {
    var id;
    id = "bg_popup-" + tooltip_content.reference.replace(/:/g, "_");
    id = id.replace(/ |\+|[^\x00-\x80]/g, "");

    var tooltip = document.getElementById(id);

    var reference_display = tooltip_content.reference_display.replace(
      /%20/g,
      " "
    );
    if (tooltip_content.text == undefined) {
      if (tooltip.text == undefined) {
        tooltip_content.text = "Obtendo passagem...";
      } else {
        tooltip_content.text = tooltip.text;
        reference_display = tooltip.reference_display;
      }
    }

    tooltip.innerHTML =
      '<div class="bg_popup-header"><div class="bg_popup-header_title"><strong>' +
      reference_display +
      " " +
      tooltip_content.version +
      '</strong></div></div><div class="bg_popup-content"><div class="bg_popup-content-bible"><p>' +
      tooltip_content.text +
      ' <a class="bg_popup-copyright" href="' +
      bgHost +
      tooltip_content.version_url +
      '" target="_blank">(' +
      tooltip_content.version +
      ')</a> <a class="bg_popup-more" href="' +
      bgHost +
      "/passage/?search=" +
      tooltip_content.reference +
      "&version=" +
      tooltip_content.version +
      '&src=tools" target="_blank">Ver mais...</a></p></div></div><div class="bg_popup-footer"><a class="bg_popup-bglogo" href="' +
      bgHost +
      '/" rel="nofollow" target="_blank"></a></div>';
    addCloseButton(tooltip);
  };

  var addCloseButton = function(tooltip) {
    var divs = tooltip.getElementsByTagName("div");
    for (var i = 0; i < divs.length; i++) {
      if (divs[i].className == "bg_popup-header_right") {
        addListener(divs[i], "click", hideAllTooltips);
      }
    }
  };

  var tooltipLocation = function(link) {
    var width, height;

    var tooltip_height = 234;
    var tooltip_width = 362;

    if (typeof window.innerWidth == "number") {
      width = window.innerWidth;
      height = window.innerHeight;
    } else if (
      document.documentElement &&
      (document.documentElement.clientWidth ||
        document.documentElement.clientHeight)
    ) {
      width = document.documentElement.clientWidth;
      height = document.documentElement.clientHeight;
    } else if (
      document.body &&
      (document.body.clientWidth || document.body.clientHeight)
    ) {
      width = document.body.clientWidth;
      height = document.body.clientHeight;
    }

    var display_loc = {};

    var offsetPos = getOffsetPos(link);
    var leftPos = offsetPos.leftPos;
    var topPos = offsetPos.topPos;

    if (link.offsetWidth / link.parentNode.offsetWidth > 0.5) {
      leftPos = getOffsetPos(link.parentNode);
      leftPos = leftPos.leftPos;
    }
    if (leftPos + tooltip_width + 5 > width) {
      leftPos -= tooltip_width;
      if (leftPos + tooltip_width + link.offsetWidth <= width)
        leftPos += link.offsetWidth;
      if (leftPos + tooltip_width + 25 <= width) leftPos += 25;
      if (leftPos - link.offsetWidth / 2 >= 0) leftPos -= link.offsetWidth / 2;
    } else {
      if (
        leftPos + link.offsetWidth / 2 <= width &&
        link.offsetWidth / link.parentNode.offsetWidth <= 0.5
      )
        leftPos += link.offsetWidth / 2;
      if (leftPos - 35 >= 0) {
        leftPos -= 35;
      }
    }

    var scrollY = window.pageYOffset || document.documentElement.scrollTop || 0;
    if (
      topPos + link.offsetHeight + tooltip_height + 15 <= height + scrollY ||
      topPos - tooltip_height + 5 < 0
    ) {
      topPos += link.offsetHeight + 10;
    } else {
      topPos -= tooltip_height + 10;
    }

    display_loc.offsetY = topPos;
    display_loc.offsetX = leftPos;

    return display_loc;
  };

  var getOffsetPos = function(linkObj) {
    var topPos, leftPos;
    topPos = leftPos = 0;
    do {
      topPos += linkObj.offsetTop;
      leftPos += linkObj.offsetLeft;
      if (document.all) {
        topPos += linkObj.clientTop;
        leftPos += linkObj.clientLeft;
      }
    } while ((linkObj = linkObj.offsetParent) != null);
    return { topPos: topPos, leftPos: leftPos };
  };

  var setup = function() {
    if (!setupRun) {
      if (that.showTooltips === true) {
        addCSS();
        addListener(document, "click", hideAllTooltips);
      }
      createContainer();
      setupRun = true;
    }
  };

  return that;
})();