var Backbone = require('backbone');
var $ = require('jquery');
var StatusModel = require('../System/StatusModel');

//This module will automatically route all relative links through backbone router rather than
//causing links to reload pages.

var routeBinder = {

    bind : function() {
        var self = this;
        $(document).on('click', 'a[href]', function(event) {
            self._handleClick(event);
        });
    },

    _handleClick : function(event) {
        var $target = $(event.target);

        //check if tab nav
        if ($target.parents('.nav-tabs').length) {
            return;
        }

        if ($target.hasClass('no-router')) {
            return;
        }

        var href = event.target.getAttribute('href');

        if (!href && $target.closest('a') && $target.closest('a')[0]) {

            var linkElement = $target.closest('a')[0];

            if ($(linkElement).hasClass('no-router')) {
                return;
            }

            href = linkElement.getAttribute('href');
        }

        event.preventDefault();

        if (!href) {
            throw 'couldn\'t find route target';
        }

        if (!href.startsWith('http')) {
            if (event.ctrlKey) {
                window.open(href, '_blank');
            }

            else {
                var relativeHref = href.replace(StatusModel.get('urlBase'), '');

                Backbone.history.navigate(relativeHref, { trigger : true });
            }
        } else if (href.contains('#')) {
            //Open in new tab without dereferer (since it doesn't support fragments)
            window.open(href, '_blank');
        } else {
            //Open in new tab
            window.open('http://www.dereferer.org/?' + encodeURI(href), '_blank');
        }
    }
};

module.exports = routeBinder;