(function(Icinga) {

    var Bp = function(module) {
        /**
         * YES, we need Icinga
         */
        this.module = module;

        this.idCache = {};

        this.initialize();

        this.module.icinga.logger.debug('BP module loaded');
    };

    Bp.prototype = {

        initialize: function()
        {
            /**
             * Tell Icinga about our event handlers
             */
            this.module.on('mouseenter', 'table.businessprocess th.bptitle', this.titleMouseOver);
            this.module.on('mouseleave', 'table.businessprocess th.bptitle', this.titleMouseOut);
            this.module.on('click', 'table.businessprocess th', this.titleClicked);
            this.module.on('rendered', this.fixOpenedBps);

            this.module.icinga.logger.debug('BP module loaded');
        },

        /**
         * Add 'hovered' class to hovered title elements
         *
         * TODO: Skip on tablets
         */
        titleMouseOver: function (event) {
            event.stopPropagation();
            var el = $(event.currentTarget);
            el.addClass('hovered');
        },

        /**
         * Remove 'hovered' class from hovered title elements
         *
         * TODO: Skip on tablets
         */
        titleMouseOut: function (event) {
            event.stopPropagation();
            var el = $(event.currentTarget);
            el.removeClass('hovered');
        },

        /**
         * Handle clicks on operator or title element
         *
         * Title shows subelement, operator unfolds all subelements
         */
        titleClicked: function (event) {
            var self = this;
            event.stopPropagation();
            event.preventDefault();
            var $el = $(event.currentTarget),
                affected = []
                $container = $el.closest('.container');
            if ($el.hasClass('operator')) {
                $affected = $el.closest('table').children('tbody')
                    .children('tr.children').children('td').children('table');

                // Only if there are child BPs
                if ($affected.find('th.operator').length < 1) {
                    $affected = $el.closest('table');
                }
            } else {
                $affected = $el.closest('table');
            }
            $affected.each(function (key, el) {
                var $bptable = $(el).closest('table');
                $bptable.toggleClass('collapsed');
                if ($bptable.hasClass('collapsed')) {
                    $bptable.find('table').addClass('collapsed');
                }
            });

            /*$container.data('refreshParams', {
                opened: self.listOpenedBps($container)
            });*/
        },

        fixOpenedBps: function(event) {
            var $container = $(event.currentTarget);
            var container_id = $container.attr('id');

            if (typeof this.idCache[container_id] === 'undefined') {
                return;
            }
            var $procs = $('table.process', $container);
            $.each(this.idCache[$container.attr('id')], function(idx, id) {
                var $el = $('#' + id);
                $procs = $procs.not($el);

                $el.parents('table.process').each(function (idx, el) {
                    $procs = $procs.not($(el));

                });
            });

            $procs.addClass('collapsed');
        },

        /**
         * Get a list of all currently opened BPs.
         *
         * Only get the deepest nodes to keep requests as small as possible
         */
        listOpenedBps: function ($container) {
            var ids = [];
            
            $('.businessprocess', $container).add('.businessprocess table', $container)
            .not('.collapsed').each(function (key, el) {
                var $el = $(el);
                if ($el.find('table').not('.collapsed').length === 0) {
                    var search = true,
                       this_id = $el.attr('id'),
                       cnt     = 0,
                       current = el,
                       parent;
                    while (search && cnt < 40) {
                        cnt++;
                        parent = $(current).parent().closest('table')[0];
                        if (!parent || $(parent).hasClass('bps')) {
                            search = false;
                        } else {
                            current = parent;
                            this_id = parent.id + '_' + this_id;
                        }
                    }

                    if (this_id) {
                        ids.push(this_id);
                    }
                }
            });

            return ids;
        }
    };

    Icinga.availableModules.bpapp = Bp;

}(Icinga));