(function () {

  var newReportModal = null;
  var newReportModalBody = null;
  var newReportCreateButton = null;

  var deleteReportsModal = null;
  var deleteReportsInput = null;

  var newReportButton = null;
  var editReportButton = null;
  var deleteReportsButton = null;
  var checkAll = null;
  var allChecks = null;
  var allRows = null;

  var checkedReports = [];

  /**
   * Initialize the new report modal.
   */
  function initNewReportModal() {
    // TEMPORARY DISABLED
    /**
    // Remove modal content when modal window is closed.
    newReportModal.on("hidden.bs.modal", function () {
      newReportModalBody.html("");
    });

    // Populate modal content when AJAX call is complete
    newReportButton
    .on("ajax:before", function () {
      newReportModal.modal('show');
    })
    .on("ajax:success", function (e, data) {
      newReportModalBody.html(data.html);
    });

    // Before redirecting, pass parameters
    newReportCreateButton.click(function(event){
      var url = $(this).closest("form").attr("action");

      event.preventDefault();

      // Copy the GET params
      var val = newReportModalBody.find(".btn-primary.active > input[type='radio']").attr("value");
      url += "/" + val;

      $(location).attr("href", url);
      return false;
    });
    */
  }

  /**
   * Initialize interaction between checkboxes, editing and deleting.
   */
  function initCheckboxesAndEditing() {
    checkAll.click(function() {
      allChecks.prop("checked", this.checked);
      checkedReports = [];
      if (this.checked) {
        _.each(allRows, function(row) {
          checkedReports.push($(row).data("id"));
        });
      }

      updateButtons();
    });
    allChecks.click(function() {
      checkAll.prop("checked", false);
      var id = $(this).closest(".report-row").data("id");
      if (this.checked) {
        if (_.indexOf(checkedReports, id) === -1) {
          checkedReports.push(id);
        }
      } else {
        var idx = _.indexOf(checkedReports, id);
        if (idx !== -1) {
          checkedReports.splice(idx, 1);
        }
      }

      updateButtons();
    });
  }

  /**
   * Update edit & delete buttons depending on checking of reports.
   */
  function updateButtons() {
    if (checkedReports.length === 0) {
      editReportButton.addClass("disabled");
      deleteReportsButton.addClass("disabled");
    } else if (checkedReports.length === 1) {
      editReportButton.removeClass("disabled");
      deleteReportsButton.removeClass("disabled");
    } else {
      editReportButton.addClass("disabled");
      deleteReportsButton.removeClass("disabled");
    }
  }

  /**
   * Initialize the edit report functionality.
   */
  function initEditReport() {
    editReportButton.click(function(e) {
      animateLoading();
      if (checkedReports.length === 1) {
        var id = checkedReports[0];
        var row = $(".report-row[data-id='" + id + "']");
        var url = row.data("edit-link");

        $(location).attr("href", url);
      }

      return false;
    });
  }

  /**
   * Initialize the deleting of reports.
   */
  function initDeleteReports() {
    deleteReportsButton.click(function(e) {
      if (checkedReports.length > 0) {
        // Copy the checked IDs into the hidden input
        deleteReportsInput.attr("value", "[" + checkedReports + "]");

        // Show modal
        deleteReportsModal.modal("show");
      }
    });

    $("#confirm-delete-reports-btn").click(function(e) {
      animateLoading();
    });
  }

  /* Initilize first-time tutorial if needed */
  function initTutorial() {
    var currentStep = Cookies.get('current_tutorial_step');
    if (showTutorial() && (currentStep > 14 && currentStep < 18)) {
      var reportsTutorial =$("#content").attr("data-reports-step-text");
      var reportsClickNewReportTutorial = $("#content").attr("data-reports-click-new-report-step-text");
      introJs()
        .setOptions({
          steps: [
            {
              intro: reportsTutorial
            },
            {
              element: document.getElementById("new-report-btn"),
              intro: reportsClickNewReportTutorial,
              tooltipClass: "custom next-page-link"
            }
          ],
          overlayOpacity: '0.1',
          nextLabel: 'Next',
          doneLabel: 'End tutorial',
          skipLabel: 'End tutorial',
          showBullets: false,
          showStepNumbers: false,
          exitOnOverlayClick: false,
          exitOnEsc: false,
          tooltipClass: 'custom'
        })
        .onafterchange(function (tarEl) {
          Cookies.set('current_tutorial_step', this._currentStep + 16);

          if (this._currentStep == 1) {
            setTimeout(function() {
              $('.next-page-link a.introjs-nextbutton')
                .removeClass('introjs-disabled')
                .attr('href', tarEl.href);
            }, 500);
          }
        })
        .goToStep(currentStep == 17 ? 2 : 1)
        .start();

      // Destroy first-time tutorial cookies when skip tutorial
      // or end tutorial is clicked
      $(".introjs-skipbutton").each(function (){
        $(this).click(function (){
          Cookies.remove('tutorial_data');
          Cookies.remove('current_tutorial_step');
        });
      });
    }
  }

  function showTutorial() {
    var tutorialData;
    if (Cookies.get('tutorial_data'))
      tutorialData = JSON.parse(Cookies.get('tutorial_data'));
    else
      return false;
    var tutorialProjectId = tutorialData[0].project;
    var currentProjectId = $(".report-table").attr("data-project-id");
    return tutorialProjectId == currentProjectId;
  }

  $(document).ready(function() {
    // Initialize selectors
    newReportModal = $("#new-report-modal");
    newReportModalBody = newReportModal.find(".modal-body");
    newReportCreateButton = $("#create-new-report-btn");
    deleteReportsModal = $("#delete-reports-modal");
    deleteReportsInput = $("#report-ids");
    newReportButton = $("#new-report-btn");
    editReportButton = $("#edit-report-btn");
    deleteReportsButton = $("#delete-reports-btn");
    checkAll = $(".check-all-reports");
    allChecks = $(".check-report");
    allRows = $(".report-row");

    initNewReportModal();
    initCheckboxesAndEditing();
    updateButtons();
    initEditReport();
    initDeleteReports();
    initTutorial();
  });

}());