define(["js/views/baseview", "underscore", "gettext", "js/models/assignment_grade", "js/views/feedback_notification"],
        function(BaseView, _, gettext, AssignmentGrade, NotificationView) {
    var l10nNotGraded = gettext('Not Graded');
    var OverviewAssignmentGrader = BaseView.extend({
        // instantiate w/ { graders : CourseGraderCollection, el : <the gradable-status div> }
        events : {
            "click .menu-toggle" : "showGradeMenu",
            "click .menu li" : "selectGradeType"
        },
        initialize : function() {
            // call template w/ {assignmentType : formatname, graders : CourseGraderCollection instance }
            this.template = _.template(
                    // TODO move to a template file
                    '<h4 class="status-label"><%= assignmentType %></h4>' +
                    '<a data-tooltip="Mark/unmark this subsection as graded" class="menu-toggle" href="#">' +
                        '<% if (!hideSymbol) {%><i class="icon fa fa-check"></i><%};%>' +
                    '</a>' +
                    '<ul class="menu">' +
                        '<% graders.each(function(option) { %>' +
                            '<li><a <% if (option.get("type") == assignmentType) {%>class="is-selected" <%}%> href="#"><%= option.get("type") %></a></li>' +
                        '<% }) %>' +
                        '<li><a class="gradable-status-notgraded" href="#">' +
                        l10nNotGraded +
                        '</a></li>' +
                    '</ul>');
            this.assignmentGrade = new AssignmentGrade({
                locator : this.$el.closest('.id-holder').data('locator'),
                graderType : this.$el.data('initial-status')});
            // TODO throw exception if graders is null
            this.graders = this.options['graders'];
            var cachethis = this;
            // defining here to get closure around this
            this.removeMenu = function(e) {
                e.preventDefault();
                cachethis.$el.removeClass('is-active');
                $(document).off('click', cachethis.removeMenu);
            };
            this.hideSymbol = this.options['hideSymbol'];
            this.render();
        },
        render : function() {
            var graderType = this.assignmentGrade.get('graderType');
            this.$el.html(this.template(
                {
                    assignmentType : (graderType == 'notgraded') ? l10nNotGraded : graderType,
                    graders : this.graders,
                    hideSymbol : this.hideSymbol
                }
            ));
            if (this.assignmentGrade.has('graderType') && this.assignmentGrade.get('graderType') != "notgraded") {
                this.$el.addClass('is-set');
            }
            else {
                this.$el.removeClass('is-set');
            }
        },
        showGradeMenu : function(e) {
            e.preventDefault();
            // I sure hope this doesn't break anything but it's needed to keep the removeMenu from activating
            e.stopPropagation();
            // nasty global event trap :-(
            $(document).on('click', this.removeMenu);
            this.$el.addClass('is-active');
        },
        selectGradeType : function(e) {
              e.preventDefault();

              this.removeMenu(e);

                  var saving = new NotificationView.Mini({
                      title: gettext('Saving') + '&hellip;'
                  });
                  saving.show();

              // TODO I'm not happy with this string fetch via the html for what should be an id. I'd rather use the id attr
              // of the CourseGradingPolicy model or null for notgraded (NOTE, change template's if check for is-selected accordingly)
              this.assignmentGrade.save(
                      'graderType',
                      ($(e.target).hasClass('gradable-status-notgraded')) ? 'notgraded' : $(e.target).text(),
                      {success: function () { saving.hide(); }}
                  );

              this.render();
        }
    });
    return OverviewAssignmentGrader;
});
