(function() {
  "use strict";

  if (window.jQuery) {
    init(window.jQuery);
  } else {
    loadJqueryAndInvokeInit();
  }

  function init ($) {
    var contentDeliveryUrl = "https://content-delivery.istex.fr/web-header/"
      ;

    // Mode de debug local
    if (window.WEB_HEADER_LOCAL
        || (window.location.href && window.location.href.match(/web_header_local=true/))
    ) {
      contentDeliveryUrl = window.location.hostname.match(/localhost|127\.0\.0\.1/)
                           && window.location.href.split('?')[0]
                           || contentDeliveryUrl;
    }

    $.ajax({
             url    : contentDeliveryUrl + "public/css/main.min.css",
             success: function(data) {

               $("head").append("<style>" + data + "</style>");

               $.ajax({
                        url    : contentDeliveryUrl + "include/surenteteistex.html",
                        success: function(data) {
                          var prependToTarget = window.location.hostname === "article-type.lod.istex.fr" ? ".navbar.navbar-inverse.navbar-fixed-top" : "body";
                          var $webHeader      =
                                $(jQuery.parseHTML(data))
                                  .filter("#surentete")
                                  .find("img").each(rewriteImgUrl).end()
                                  .prependTo($(prependToTarget))
                                  .wrap("<div id='istex-web-header' class='sandbox'></div>")
                                  .find("[href*='#']").click(preventDefaultEvent).end()
                                  .find("[href*='" + window.location.hostname + "']").addClass('disabled').click(
                                  preventDefaultEvent).end()
                            ;

                          window.location.hostname === "www.istex.fr" && $webHeader.find('.logoistex').remove();
                        }

                      });
             }
           });

    function rewriteImgUrl () {
      $(this).attr("src", function(index, attr) {
        return attr.replace(/^(?!http)(?:\/?([^/#"]+))+$/i, contentDeliveryUrl + "public/img/$1");
      });
    }

  }


  function loadJqueryAndInvokeInit () {
    var script    = document.createElement("script");
    script.src    = "//ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js";
    script.onload = function() {
      init(window.jQuery.noConflict());
      document.head.removeChild(script);
    };
    document.head.appendChild(script);

  }

  function preventDefaultEvent (e) {
    e.preventDefault();
  }

}());