function get_favourite_entities(complete){
    return get_ajax({url: '/favourite_entities', async: true, cache: false}, complete)
}

function get_favourite_entity_lists(complete){
    return get_ajax({url: '/favourite_entity_lists', async: true, cache: false}, complete)
}

function get_favourite_entity_maps(complete){
    return get_ajax({url: '/favourite_entity_maps', async: true, cache: false}, complete)
}

//{{{{ FAVOURITE MENUS

function favourite_type_ul(entities){
    var type_ul = $('<ul>').addClass('entities')
    for (var entity in entities){
        var entity_hash = entities[entity];
        var link   = entity_hash["link"];
        var entity_li = $('<li>');
        entity_li.append(link);
        type_ul.append(entity_li);
    }
    return type_ul
}

function favourite_list_type_ul(type, lists){
    var type_ul = $('<ul>').addClass('lists')
    for (var list in lists){
        var list = lists[list];
        var link = list_link(type, list)
        var entity_li = $('<li>');
        entity_li.html(link);
        type_ul.append(entity_li);
    }
    return type_ul
}

function favourite_map_type_ul(type, column, maps){
    var type_ul = $('<ul>').addClass('maps')
    for (var map in maps){
        var map = maps[map];
        var link = map_link(type, column, map)
        var entity_li = $('<li>');
        entity_li.html(link);
        type_ul.append(entity_li);
    }
    return type_ul
}

$.widget("rbbt.favourites", {
    options: {
        entities: {},
        lists: {},
        maps: {}
    },

    _create: function() {
        this.update();
        var tool = this;
        this.element.on('click', 'dt.star', function(){
            tool.toggle()
            return false
        })
        this.element.on('click', 'a.remove_element', function(){
            tool._remove_element($(this).siblings('a.entity, a.entity_list, a.entity_map'))
        })
    },

    _menu: function(){
        return(this.element)
    },

    _sync: function(){
        var tool = this

        get_favourite_entities(function(entities){
            tool.options.entities = entities;
            tool._update_entities()
            tool._update_star()
        })

        get_favourite_entity_lists(function(lists){
            tool.options.lists = lists;
            tool._update_lists()
            tool._update_star()
        })


        get_favourite_entity_maps(function(maps){
            tool.options.maps = maps;
            tool._update_maps()
            tool._update_star()
        })
    },

    //{{{ REMOVE ELEMENT
    //----------

    _remove_element: function(link){
        var item = link.parent('li');
        var ul = item.parent('ul');
        var type = ul.attr('class');
        var dt = ul.parent('dd').prev('dt');
        var element     = link.attr('title');
        var entity_type = dt.attr('entity_type');
        var entity_column = dt.attr('entity_column');
        var url;
        var tool = this;

        switch(type){
            case "entities":
                method = "/remove_favourite_entity/";
            element = link.attr('attr-entity_id')
            url = method + clean_element(entity_type) + "/" + element;
            break;

            case "lists":
                method = "/remove_favourite_entity_list/";
            url = method + clean_element(entity_type) + "/" + clean_element(element);
            break;

            case "maps":
                method = "/remove_favourite_entity_map/";
            url = method + clean_element(entity_type) + "/" + clean_element(entity_column) + "/" + clean_element(element);
            break;
        };

        $.ajax({url: url, type: 'POST', success: function (){ tool.update()}})
    },

    _add_destructors: function(list){
        var icon = $('<i class="general fi-minus">')
        var remove = $('<a class=remove_element></a>').append(icon)
        list.find('li').prepend(remove)
    },


    //{{{ TOGGLE PAGE STAR
    //----------

    _update_star: function(){
        if (this.is_favourite() == true){
            this.element.find('dt.star').addClass('active');
        }else{
            this.element.find('dt.star').removeClass('active');
        }
    },
    _toggle_page: function(){
        this.toggle_page(undefined)
    },

    toggle: function(){
        this._toggle_page();
    },

    //{{{ UPDATE
    //----------

    _update_entities: function(){
        var menu = this._menu()
        menu.find('ul.entities').addClass('remove');

        var entities = menu.find('dt.entities').next('dd').find('> dl')
        for(type in this.options.entities){
            var ul = favourite_type_ul(this.options.entities[type]);
            this._add_destructors(ul)
            var dt = entities.find('dt[entity_type=' + clean_attr(type) + ']')

            if (dt.length == 0){
                var dt = $('<dt>').html(type).addClass('next').addClass('type').attr('entity_type', type);
                var dd = $('<dd>').append(ul);
                entities.append(dt).append(dd);
                update_rbbt();
            }else{
                if (dt.next('dd').find('ul.entities').length == 0){
                    dt.next('dd').append(ul);
                }else{
                    dt.next('dd').find('ul.entities').replaceWith(ul);
                }
            }

            menu.find('dt[entity_type=' + clean_attr(type) + ']').next('dd').find('ul.entities').replaceWith(ul);
        }
        menu.find('ul.entities.remove').remove()
    },

    _update_lists: function(){
        var menu = this._menu()
        menu.find('ul.lists').addClass('remove');

        var lists = menu.find('dt.lists').next('dd').find('> dl')
        for(type in this.options.lists){
            var ul = favourite_list_type_ul(type, this.options.lists[type])
            this._add_destructors(ul)
            var dt = lists.find('dt[entity_type=' + clean_attr(type) + ']');

            if (dt.length == 0){
                var dt = $('<dt>').html(type).addClass('next').addClass('type').attr('entity_type', type);
                var dd = $('<dd>').append(ul);
                lists.append(dt).append(dd);
                update_rbbt();
            }else{
                if (dt.next('dd').find('ul.lists').length == 0){
                    dt.next('dd').append(ul);
                }else{
                    dt.next('dd').find('ul.lists').replaceWith(ul);
                }
            }
        }
        menu.find('ul.lists.remove').remove();
    },

    _update_maps: function(){
        var menu = this._menu()
        menu.find('ul.maps').addClass('remove')

        var maps = menu.find('dt.maps').next('dd').find('> dl')
        for(type in this.options.maps){
            for(column in this.options.maps[type]){
                var ul = favourite_map_type_ul(type, column, this.options.maps[type][column]);
                this._add_destructors(ul)
                var dt = maps.find('dt[entity_type=\'' + clean_attr(type) + '\'][entity_column=\'' + clean_attr(column) + '\']');

                if (dt.length == 0){
                    var dt = $('<dt>').html(type + ' - ' + column).addClass('next').addClass('type').attr('entity_type', clean_attr(type)).attr('entity_column', clean_attr(column));
                    var dd = $('<dd>').append(ul);
                    maps.append(dt).append(dd);
                    update_rbbt();
                }else{
                    if (dt.next('dd').find('ul.maps').length == 0){
                        dt.next('dd').append(ul);
                    }else{
                        dt.next('dd').find('ul.maps').replaceWith(ul);
                    }
                }
            }
        }
        menu.find('ul.maps.remove').remove()
    },


    //{{{ SELECTS
    //
    _update_list_select: function(select, type, lists){
        if (select.attr('attr-allow-empty') == 'true'){
            var option = $('<option value="none" class="loaded">none</option>')
            select.append(option);
        }

        var selected = null;

        if (select.attr('attr-selected') != undefined ){
            selected = select.attr('attr-selected');
        }

        $.each(lists, function(name, elems){
            var option = null;
            var name = elems
            if (selected == null || name != selected){
                option = $('<option attr-entity_type="' + type + '" class="automatic_load" value="' + name + '">' + name + '</option>');
            }else{
                option = $('<option attr-entity_type="' + type + '" class="automatic_load" selected=selected value="' + name + '">' + name + '</option>');
            }
            select.append(option);
            return true
        })
    },

    _update_map_select: function(select, type, map_lists){
        if (select.attr('attr-allow-empty') == 'true'){
            var option = $('<option value="none" class="loaded">none</option>');
            select.append(option);
        }

        var selected = null;

        if (select.attr('attr-selected') != undefined ){
            selected = select.attr('attr-selected');
        }

        for (column in map_lists){
            var maps = map_lists[column];
            if (undefined === select.attr('column') || select.attr('column') == column){
                $.each(maps, function(name, elems){
                    var option = null;
                    var name = elems
                    if (selected == null || name != selected){
                        option = $('<option class="automatic_load" attr-entity_type="' + clean_attr(type) + '" attr-column="'+ clean_attr(column) + '" value="' + name + '">' + name + '</option>');
                    }else{
                        option = $('<option class="automatic_load" attr-entity_type="' + clean_attr(type) + '" attr-column="'+ clean_attr(column) + '" selected=selected value="' + name + '">' + name + '</option>');
                    }
                    select.append(option);
                    return true
                })
            }
        }
    },

    //{{{ UPDATES
    //
    update_list_selects: function(){
        var tool = this;
        $('select.favourite_lists').find('option.automatic_load').remove()

        $.each(this.options.lists, function(type, lists){
            $('select.favourite_lists[type=' + type + ']').each(function(){
                var select = $(this);
                tool._update_list_select(select, type, lists);
            })
            $('select.favourite_lists[type=All]').each(function(){
                var select = $(this);
                select.append($('<option class="automatic_load" disabled>'+ type +'</option>'));
                tool._update_list_select(select, type, lists);
            })
        });
    },

    update_map_selects: function(){
        var tool = this;
        $('select.favourite_maps').find('option.automatic_load').remove()

        $.each(this.options.maps, function(type, maps){
            $('select.favourite_maps[type=' + type + ']').each(function(){
                var select = $(this);
                tool._update_map_select(select, type, maps);
            })
            $('select.favourite_maps[type=All]').each(function(){
                var select = $(this);
                select.append($('<option class="automatic_load" disabled>'+ type +'</option>'));
                tool._update_map_select(select, type, maps);
            })
        });
    },

    close: function(){
        this.element.find('.show').removeClass('show')
    },

    is_favourite: function(path){
        var type = page_type(path);

        switch(type){

            case "entity":
                var entity      = page_entity(path);
            var entity_type = page_entity_base_type(path);
            return this.options.entities[entity_type] !== undefined && this.options.entities[entity_type][entity] !== undefined

            case "entity_list":
                var list = page_entity_list(path);
            var entity_type = page_entity_base_type(path);
            return this.options.lists[entity_type] !== undefined && _.indexOf(this.options.lists[entity_type], list) !== -1

            case "entity_map":
                var map      = page_entity_map(path);
            var entity_type = page_entity_base_type(path);
            var entity_column = page_entity_map_column(path);
            return this.options.maps[entity_type] !== undefined && this.options.maps[entity_type][entity_column] !== undefined && _.indexOf(this.options.maps[entity_type][entity_column], map) !== -1
        }

        return false
    },

    toggle_page: function(path){
        var type = page_type(path);
        var tool = this
        switch(type){

            case "entity":
                var entity      = page_entity(path);
            var entity_type = page_entity_type(path);
            var entity_info = page_entity_info(path);

            if (this.is_favourite(path)){
                method = "/remove_favourite_entity/";
            }else{
                method = "/add_favourite_entity/";
            }
            var url = method + clean_element(entity_type) + "/" + entity;
            $.ajax({url: url, type: 'POST', data: entity_info, success: function (){ tool.update()}})
            break;

            case "entity_list":
                var list = page_entity_list(path);
            var entity_type = page_entity_type(path);
            if (this.is_favourite(path)){
                method = "/remove_favourite_entity_list/";
            }else{
                method = "/add_favourite_entity_list/";
            }
            var url = method + clean_element(entity_type) + "/" + clean_element(list);
            $.ajax({url: url, type: 'POST', success: function (){ tool.update() }})
            break;

            case "entity_map":
                var map      = page_entity_map(path);
            var entity_type = page_entity_type(path);
            var entity_column = page_entity_map_column(path);
            if (this.is_favourite(path)){
                method = "/remove_favourite_entity_map/";
            }else{
                method = "/add_favourite_entity_map/";
            }
            var url = method + clean_element(entity_type) + "/" + clean_element(entity_column) + "/" + clean_element(map);
            $.ajax({url: url, type: 'POST', success: function (){ tool.update()}})
            break;
        }
    },


    update: function(){
        this._sync()
        //this._update_entities()
        //this._update_lists()
        //this._update_maps()
        //this._update_star()
        //this._add_destructors()
        $('#modal.url.entity').modal('update_star')
    }

})