// vim: et:ts=4:sw=4:sts=4:ft=javascript

'use strict';

/*@
Ox.AnnotationFolder <f:Ox.Element> AnnotationFolder Object
    () ->              <f> AnnotationFolder Object
    (options) ->       <f> AnnotationFolder Object
    (options, self) -> <f> AnnotationFolder Object
    options <o> Options object
        editable <b|false> If true, annotations can be added
        id <s> id
        items <a|[]> items
        title <s> title
        type <s|'text'> panel type
        width <n|0>
    self    <o> shared private variable
@*/

Ox.AnnotationFolder = function(options, self) {

    self = self || {};
    var that = Ox.Element({}, self)
        .defaults({
            clickLink: null,
            collapsed: false,
            editable: false,
            highlight: '',
            id: '',
            'in': 0,
            item: '',
            items: [],
            out: 0,
            position: 0,
            range: 'all',
            selected: '',
            showWidget: false,
            sort: 'position',
            title: '',
            type: 'text',
            users: 'all',
            widgetSize: 256,
            width: 0
        })
        .options(options || {});

    self.annotations = getAnnotations();
    self.points = getPoints();
    self.position = self.options.position;
    self.sort = getSort();
    self.widget = self.options.type == 'event' ? 'Calendar'
        : self.options.type == 'place' ? 'Map' : '';

    if (self.widget) {
        self.$defineButton = Ox.Button({
            disabled: !self.options.selected,
            id: 'define',
            style: 'symbol',
            title: 'click',
            tooltip: 'Define ' + Ox.toTitleCase(self.options.type),
            type: 'image'
        })
        .bindEvent({
            click: function() {
                var item = Ox.getObjectById(self.options.items, self.options.selected);
                that.triggerEvent('define', item.place ? {
                    id: item.place.id
                } : {
                    name: item.value
                });
            }
        });
    }

    self.$addButton = Ox.Button({
            id: 'add',
            style: 'symbol',
            title: 'add',
            tooltip: 'Add ' + self.options.item,
            type: 'image'
        })
        .bindEvent({
            click: function() {
                that.triggerEvent('add', {value: ''});
            }
        });    

    self.$infoButton = Ox.Button({
            style: 'symbol',
            title: 'info',
            type: 'image'
        })
        .bindEvent({
            click: function() {
                that.triggerEvent('info');
            }
        });

    self.$panel = Ox.CollapsePanel({
            collapsed: self.options.collapsed,
            extras: Ox.merge(
                self.widget ? [self.$defineButton] : [],
                [self.options.editable ? self.$addButton : self.$infoButton]
            ),
            size: 16,
            title: self.options.title
        })
        .addClass('OxAnnotationFolder')
        .bindEvent({
            toggle: toggleLayer
        });

    that.setElement(self.$panel);
    that.$content = that.$element.$content;

    if (self.widget) {
        self.widgetSize = self.options.showWidget * self.options.widgetSize;
        self.$outer = Ox.Element()
            .css({
                display: 'table-cell',
                width: self.options.width + 'px'
            })
            .appendTo(that.$content);
        self.$inner = Ox.Element()
            .css({
                height: self.widgetSize + 'px',
                overflow: 'hidden'
            })
            .appendTo(self.$outer);
        if (options.type == 'event') {
            self.$widget = self.$calendar = Ox.Calendar({
                    events: getEvents(),
                    height: self.widgetSize,
                    showZoombar: true,
                    width: self.options.width,
                    zoomOnlyWhenFocused: true
                })
                .css({
                    width: self.options.width + 'px',
                    height: self.widgetSize + 'px'
                })
                .bindEvent({
                    select: function(data) {
                        if (!data.id && self.options.selected && Ox.getObjectById(self.options.items, self.options.selected).event) {
                            // only deselect annotation if the event deselect was not
                            // caused by switching to an annotation without event
                            self.$annotations.options({selected: ''});
                        } else if (data.annotationIds.indexOf(self.options.selected) == -1) {
                            // only select a new annotation if the currently selected
                            // annotation does not match the selected event
                            self.$annotations.options({selected: data.annotationIds[0]});
                        }
                    }
                })
                .appendTo(self.$inner);
        } else { // place
            self.$widget = self.$map = Ox.Map({
                    places: getPlaces(),
                    showTypes: true,
                    // FIXME: should be showZoombar
                    zoombar: true,
                    zoomOnlyWhenFocused: true
                    // showLabels: true
                })
                .css({
                    width: self.options.width + 'px',
                    height: self.widgetSize + 'px'
                })
                .bindEvent({
                    // FIXME: should be select, not selectplace
                    selectplace: function(data) {
                        if (!data.id && self.options.selected && Ox.getObjectById(self.options.items, self.options.selected).place) {
                            // only deselect annotation if the place deselect was not
                            // caused by switching to an annotation without place
                            self.$annotations.options({selected: ''});
                        } else if (data.annotationIds && data.annotationIds.indexOf(self.options.selected) == -1) {
                            // only select a new annotation if the currently selected
                            // annotation does not match the selected place
                            self.$annotations.options({selected: data.annotationIds[0]});
                        }
                    }
                })
                .appendTo(self.$inner);
        }
        self.$resizebar = Ox.Element({
                tooltip: 'Drag to resize or click to toggle map' // fixme: update as w/ splitpanels
            })
            .addClass('OxResizebar OxHorizontal')
            .css({
                position: 'absolute',
                top: self.widgetSize + 'px',
                cursor: 'ns-resize'
            })
            .append($('<div>').addClass('OxSpace'))
            .append($('<div>').addClass('OxLine'))
            .append($('<div>').addClass('OxSpace'))
            .bindEvent({
                anyclick: toggleWidget,
                dragstart: dragstart,
                drag: drag,
                dragend: dragend
            })
            .appendTo(self.$outer);         
    }

    self.$annotations = Ox.ArrayEditable({
            clickLink: self.options.clickLink,
            editable: self.options.editable,
            highlight: self.options.highlight,
            items: self.annotations,
            placeholder: 'No ' + self.options.title,
            selected: self.options.selected,
            separator: ';',
            sort: self.sort,
            submitOnBlur: false,
            width: self.options.width,
            maxHeight: self.options.type == 'text' ? Infinity : void 0,
            type: self.options.type == 'text' ? 'textarea' : 'input'
        })
        //.css({marginTop: '256px'})
        .bindEvent({
            add: function(data) {
                if (self.editing) {
                    // FIXME: changed value will not be saved!
                }
                that.triggerEvent('add', {value: data.value || ''});                    
            },
            blur: function() {
                // the video editor will, if it has not received focus,
                // call blurItem
                that.triggerEvent('blur');
            },
            change: changeAnnotation,
            'delete': removeAnnotation,
            edit: function() {
                self.editing = true;
                that.triggerEvent('edit');
            },
            select: selectAnnotation,
            submit: submitAnnotation,
            key_space: function() {
                that.triggerEvent('paused');
            }
        })
        .appendTo(
            ['event', 'place'].indexOf(self.options.type) > -1
            ? self.$outer : that.$content
        );

    self.options.selected && setTimeout(function() {
        // need timeout in order to trigger events
        if (self.options.collapsed) {
            self.$panel.options({collapsed: false});
        }
        selectAnnotation({id: self.options.selected});
    }, 0);

    showWarnings();

    function changeAnnotation(data) {
        var item = Ox.getObjectById(self.options.items, data.id);
        item.value = data.value;
        that.triggerEvent('change', item);
    }

    function crossesPoint() {
        var sort = [self.position, self.options.position].sort(),
            positionA = sort[0],
            positionB = sort[1];
        return self.points.some(function(point) {
            return point > positionA && point < positionB;
        });
    }

    function dragstart() {
        if (self.options.showWidget) {
            self.drag = {
                startSize: self.options.widgetSize
            };
        }
    }

    function drag(e) {
        if (self.options.showWidget) {
            self.options.widgetSize = Ox.limit(
                self.drag.startSize + e.clientDY, 128, 384
            );
            if (self.options.widgetSize >= 248 && self.options.widgetSize <= 264) {
                self.options.widgetSize = 256;
            }
            self.$resizebar.css({top: self.options.widgetSize + 'px'});
            self.$inner.css({height: self.options.widgetSize + 'px'});
            self.$widget.options({height: self.options.widgetSize});
        }
    }

    function dragend(e) {
        if (self.options.showWidget) {
            self.options.type == 'event'
                ? self.$calendar.resizeCalendar()
                : self.$map.resizeMap();
            that.triggerEvent('resizewidget', {size: self.options.widgetSize});
        }
    }

    function getAnnotations() {
        return self.options.items.filter(function(item) {
            return self.editing && item.id == self.options.selected || (
                (
                    self.options.range == 'all' || (
                        self.options.range == 'selection'
                        && item['in'] < self.options.out
                        && item.out > self.options['in']
                    ) || (
                        self.options.range == 'position'
                        && item['in'] <= self.options.position
                        && item.out >= self.options.position
                    )
                ) && (
                    self.options.users == 'all'
                    || self.options.users.indexOf(item.user) > -1
                )
            );
        });
    }

    function getPoints() {
        return Ox.unique(Ox.flatten(
            self.options.items.map(function(item) {
                return [item['in'], item.out];
            })
        ));
    }

    function getEvents() {
        var events = [];
        self.annotations.filter(function(item) {
            return !!item.event;
        }).forEach(function(item) {
            var index = Ox.getIndexById(events, item.event.id);
            if (index == -1) {
                events.push(Ox.extend({
                    annotationIds: [item.id]
                }, item.event))
            } else {
                events[index].annotationIds.push(item.id);
            }
        });
        return events;
    }

    function getPlaces() {
        var places = [];
        self.annotations.filter(function(item) {
            return !!item.place;
        }).forEach(function(item) {
            var index = Ox.getIndexById(places, item.place.id);
            if (index == -1) {
                places.push(Ox.extend({
                    annotationIds: [item.id]
                }, item.place));
            } else {
                places[index].annotationIds.push(item.id);
            }
        });
        return places;
    }

    function getSort() {
        return ({
            duration: ['-duration', '+in', '+value'],
            position: ['+in', '-duration', '+value'],
            text: ['+value', '+in', '-duration']
        })[self.options.sort];
    }

    function removeAnnotation(data) {
        var item;
        self.editing = false;
        if (self.widget) {
            item = Ox.getObjectById(self.options.items, data.id);
            if (item[self.options.type]) {
                if (self.options.type == 'event') {
                    self.$calendar.removeEvent(data.id);
                } else {
                    self.$map.removePlace(data.id)
                        .options({selected: ''}) // deselect resultPlace
                        .triggerEvent('key_escape'); // remove resultPlace
                }
            }
        }
        that.triggerEvent('remove', {id: data.id});
    }

    function selectAnnotation(data) {
        var item = Ox.getObjectById(self.options.items, data.id);
        self.options.selected = item ? data.id : '';
        if (self.widget) {
            if (self.options.type == 'event') {
                self.$calendar.options({
                        selected: item && item.event ? item.event.id : ''
                    })
                    .panToEvent();
            } else {
                self.$map.options({
                        selected: item && item.place ? item.place.id : ''
                    })
                    .panToPlace();
            }
        }
        that.triggerEvent('select', Ox.extend(data, item ? {
            'in': item['in'],
            out: item.out,
            layer: self.options.id
        } : {}));
    }

    function showWarnings() {
        if (self.widget && self.options.items.length) {
            self.$annotations.find('.OxEditableElement').each(function() {
                var $element = $(this);
                // We don't want to catch an eventual placeholder,
                // which is an EditableElement without .data('id')
                if (
                    $element.data('id')
                    && !Ox.getObjectById(
                        self.options.items, $element.data('id')
                    )[self.options.type]
                ) {
                    $element.addClass('OxWarning');
                }
            });
        }
    }

    function submitAnnotation(data) {
        var item = Ox.getObjectById(self.options.items, data.id);
        item.value = data.value;
        self.editing = false;
        //self.$annotations.options({items: self.options.items});
        self.options.sort == 'text' && self.$annotations.reloadItems();
        that.triggerEvent('submit', item);
    }

    function toggleLayer() {
        self.options.collapsed = !self.options.collapsed;
        if (
            !self.options.collapsed
            && self.options.type == 'place'
            && self.options.showWidget
        ) {
            self.$map.resizeMap();
        }
        if (self.options.collapsed) {
            self.editing && that.blurItem();
            self.$annotations.loseFocus();
        }
        that.triggerEvent('togglelayer', {collapsed: self.options.collapsed});
    }

    function toggleWidget() {
        self.options.showWidget = !self.options.showWidget;
        self.widgetSize = self.options.showWidget * self.options.widgetSize;
        self.$resizebar.animate({top: self.widgetSize + 'px'}, 250);
        self.$inner.animate({height: self.widgetSize + 'px'}, 250);
        self.$widget.animate({height: self.widgetSize + 'px'}, 250, function() {
            self.$widget.options({height: self.widgetSize});
        });
        that.triggerEvent('togglewidget', {collapsed: !self.options.showWidget});
    }

    function updateAnnotations() {
        self.annotations = getAnnotations();
        self.$annotations.options({items: self.annotations});
        showWarnings();
        if (self.widget) {
            self.options.type == 'event'
                ? self.$calendar.options({events: getEvents()})
                : self.$map.options({places: getPlaces()});
        }
    }

    self.setOption = function(key, value) {
        if (key == 'highlight') {
            self.$annotations.options({highlight: value});
        }
        if (['in', 'out'].indexOf(key) > -1 && self.editing) {
            var item = Ox.getObjectById(self.options.items, self.options.selected);
            item[key] = value;
            item.duration = self.options.out - self.options['in'];
            self.points = getPoints();
        }
        if (key == 'in') {
            //fixme: array editable should support item updates while editing
            self.options.range == 'selection' && updateAnnotations();
        } else if (key == 'out') {
            self.options.range == 'selection' && updateAnnotations();
        } else if (key == 'position') {
            if (self.options.range == 'position') {
                crossesPoint() && updateAnnotations();
                self.position = self.options.position;
            }
        } else if (key == 'range') {
            updateAnnotations();
        } else if (key == 'selected') {
            if (value === '') {
                self.editing = false;
            }
            if (value && self.options.collapsed) {
                self.$panel.options({collapsed: false});
            }
            self.$annotations.options({selected: value});
        } else if (key == 'sort') {
            self.sort = getSort();
            self.$annotations.options({sort: self.sort});
            showWarnings();
        } else if (key == 'users') {
            updateAnnotations();
        } else if (key == 'width') {
            Ox.print('RESIZE!!!!')
            if (self.widget) {
                self.$outer.options({width: self.options.width});
                self.$inner.options({width: self.options.width});
                self.$widget.options({width: self.options.width});
            }
            self.$annotations.options({
                width: self.options.type == 'text' ? self.options.width + 8 : self.options.width
            });
        }
    };

    /*@
    addItem <f> addItem
    @*/
    that.addItem = function(item) {
        Ox.Log('AF', 'FOLDER ADD ITEM', item)
        var pos = 0;
        self.options.items.splice(pos, 0, item);
        self.$panel.options({collapsed: false});
        self.$annotations
            .addItem(pos, item)
            .options({selected: item.id})
            .editItem();
        showWarnings();
        //selectAnnotation(item);
        //that.triggerEvent('edit');
        return that;
    };

    that.blurItem = function() {
        self.editing = false;
        self.$annotations.blurItem();
        return that;
    };

    that.editItem = function() {
        self.editing = true;
        self.$panel.options({collapsed: false});
        self.$annotations.editItem();
        return that;
    };

    /*@
    removeItems <f> removeItems
    @*/
    /*
    that.removeItem = function(id) {
        var pos = Ox.getIndexById(self.options.items, id);
        self.options.items.splice(pos, 1);
        self.$annotations.removeItems && self.$annotations.removeItems([id]);
    };
    */

    that.updateItem = function(id, data) {
        var item = Ox.getObjectById(self.options.items, id);
        Ox.forEach(data, function(value, key) {
            item[key] = value;
        });
        self.options.selected = item.id;
        self.$annotations.options({selected: self.options.selected});
        if (self.widget && item[self.options.type]) {
            // if updating has made the item match
            // an event or place, then select it
            self.$widget.options({selected: item[self.options.type].id});
        }
        return that;
    };

    return that;

};