'use strict';


class MapLibreRectangle {
    constructor(options = {}) {
        this.id = options.id || 'rectangle-' + Ox.uid();
        this.bounds = options.bounds;
        this.draggable = options.draggable || false;
        this.onclick = options.onclick || null
    }

    _createRectangle() {
        const coords = this._getPolygonCoordinates();

        const rectangleGeoJSON = {
            type: 'Feature',
            geometry: {
                type: 'Polygon',
                coordinates: [coords]
            },
            properties: {
                id: this.id
            }
        };
        var sourceId = `${this.id}-rectangles`
        this.source = this.map.getSource(sourceId)
        if (!this.source) {
            this.map.addSource(sourceId, {
                type: 'geojson',
                data: {
                    type: 'FeatureCollection',
                    features: []
                }
            });
            this.source = this.map.getSource(sourceId)

            // Add fill layer
            var layerId = `${this.id}-fill`
            if (!this.map.getLayer(layerId)) {
                this.map.addLayer({
                    id: layerId,
                    type: 'fill',
                    source: sourceId,
                    paint: {
                        'fill-color': '#088',
                        'fill-opacity': 0.3
                    }
                });
            }

            // Add outline layer
            var layerId = `${this.id}-outline`
            if (!this.map.getLayer(layerId)) {
                this.map.addLayer({
                    id: layerId,
                    type: 'line',
                    source: sourceId,
                    paint: {
                        'line-color': '#000',
                        'line-width': 2
                    }
                });
            }
        }
        /*
        this.source._data.features.push(rectangleGeoJSON)
        this.source.setData(this.source._data)
        */
    }

    _getPolygonCoordinates() {
        const sw = this.bounds._sw;
        const ne = this.bounds._ne;

        return [
            [sw.lng, ne.lat], // NW
            [ne.lng, ne.lat], // NE
            [ne.lng, sw.lat], // SE
            [sw.lng, sw.lat], // SW
            [sw.lng, ne.lat]  // Close polygon
        ];
    }

    setBounds(bounds) {
        this.bounds = bounds;
        const coords = this._getPolygonCoordinates();
        const updatedData = {
            type: 'Feature',
            geometry: {
                type: 'Polygon',
                coordinates: [coords]
            },
            properties: {
                id: this.id
            }
        };
        var updated = false;
        this.source._data.features.forEach(feature => {
            if (feature.properties.id == this.id) {
                feature.geometry = updatedData.geometry
                updated = true
            }
        })
        if (!updated) {
            this.source._data.features.push(updatedData)
        }
        this.source.setData(this.source._data)
    }

    getBounds() {
        return this.bounds;
    }

    _enableDragging() {
        let isDragging = false;
        let startPos;

        this.map.on('mousedown', `${this.id}-fill`, (e) => {
            e.preventDefault();
            isDragging = true;
            startPos = e.lngLat;
            this.map.getCanvas().style.cursor = 'grabbing';
        });

        this.map.on('mousemove', (e) => {
            if (!isDragging) return;

            const dx = e.lngLat.lng - startPos.lng;
            const dy = e.lngLat.lat - startPos.lat;

            const sw = [this.bounds[0][0] + dx, this.bounds[0][1] + dy];
            const ne = [this.bounds[1][0] + dx, this.bounds[1][1] + dy];

            this.setBounds([sw, ne]);
            startPos = e.lngLat;
        });

        this.map.on('mouseup', () => {
            if (isDragging) {
                isDragging = false;
                this.map.getCanvas().style.cursor = '';
            }
        });
    }
    _enableClicking() {
        this.map.on('click', `${this.id}-fill`, e => {
            console.log('click', e)
            if (this.onclick) {
                e.preventDefault()
                //e.stopPropagation()
                this.onclick(e)
            }
        })
    }

    remove() {
        this.source._data.features = this.source._data.features.filter(feature => {
            return feature.properties.id != this.id
        })
        this.source.setData(this.source._data)
    }

    add() {
        this.setBounds(this.bounds)
    }

    addTo(map) {
        this.map = map;
        this._createRectangle();
        if (this.draggable) this._enableDragging();
        this._enableClicking();
    }
}


/*@
Ox.MapRectangle <f> MapRectangle Object
    (options) -> <o> MapRectangle Object
    options <o> Options object
        map <o|null> map
        place <o|null> place
@*/

Ox.MapRectangle = function(options) {

    options = Ox.extend({
        map: null,
        place: null
    }, options);

    var that = this,
        themeData = Ox.Theme.getThemeData();

    Ox.forEach(options, function(val, key) {
        that[key] = val;
    });

    /*@
    rectangle <f> google.maps.Rectangle
    @*/
    /*
    that.rectangle = new google.maps.Rectangle({
        clickable: true,
        bounds: that.place.bounds
    });
    */
    that.rectangle = new MapLibreRectangle({
        bounds: that.place.bounds,
    });
    that.rectangle.addTo(that.map.map);
    that.rectangle.onclick = click

    /*@
    markers <a> array of markers (only corners for rectangle resizing)
    @*/
    var cornerPositions = ['ne', 'nw', 'se', 'sw'];
    that.markers = cornerPositions.map(function(position) {
        return new Ox.MapRectangleMarker({
            map: that.map,
            place: that.place,
            position: position
        });
    });

    setOptions();

    function click(e) {
        if (
            that.map.options('editable')
            && that.place.editable
            && !that.place.editing
        ) {
            that.place.edit();
        } else if (that.map.getKey() == 'meta') {
            that.place.submit();
        } else if (that.map.getKey() == 'shift') {
            that.map.zoomToPlace();
        } else {
            that.map.panToPlace();
        }
    }

    function setOptions() {
        var color = '#' + Ox.toHex(themeData[
            that.place.editing
            ? 'mapPlaceEditingBorder'
            : 'mapPlaceSelectedBorder'
        ]);
        /*
        that.rectangle.setOptions({
            bounds: that.place.bounds,
            fillColor: color,
            fillOpacity: that.place.editing ? 0.1 : 0,
            strokeColor: color,
            strokeOpacity: that.place.id[0] == '_' ? 0.5 : 1,
            strokeWeight: 2
        });
        */
        /*
        console.log("fixme", {
            bounds: that.place.bounds,
            fillColor: color,
            fillOpacity: that.place.editing ? 0.1 : 0,
            strokeColor: color,
            strokeOpacity: that.place.id[0] == '_' ? 0.5 : 1,
            strokeWeight: 2
        });
        */
    }

    /*@
    add <f> add
    @*/
    that.add = function() {
        that.rectangle.add()
        return that;
    };

    /*@
    deselect <f> deselect
    @*/
    that.deselect = function() {
        setOptions();
        Ox.Log('Map', 'MARKERS', that.markers)
        Ox.forEach(that.markers, function(marker) {
            marker.remove();
        });
        return that;
    };

    /*@
    remove <f> remove
    @*/
    that.remove = function() {
        that.rectangle.remove();
        return that;
    }

    /*@
    select <f> select
    @*/
    that.select = function() {
        setOptions();
        Ox.forEach(that.markers, function(marker) {
            marker.add();
        });
        return that;
    };

    /*@
    update <f> udpate
    @*/
    that.update = function() {
        Ox.Log('Map', 'UPDATE...')
        setOptions();
        // Update the visual rectangle bounds
        that.rectangle.setBounds(that.place.bounds);
        Ox.forEach(that.markers, function(marker) {
            marker.update();
        });
        return that;
    }

    return that;

};