import { createSelector } from 'reselect';
import Global from './Common';
import { latLngDegreesToDecimal } from './Utils'



    function _getCircles(airspaceInfos, setStyle, currentAirspaceIndex) {
        let circles = [];
        if (!Array.isArray(airspaceInfos)) {
            return { circles };
        }
        //通过该方法获取样式
        let circleStyle = setStyle('circle');
        for (let i = 0; i < airspaceInfos.length; i++) {
            let tmpCircle = airspaceInfos[i]
            if (tmpCircle.airspaceType == Global.airspaceType.circle && currentAirspaceIndex != i) {
                let coordinate = {};
                coordinate.latitude = latLngDegreesToDecimal(tmpCircle.lat);
                coordinate.longitude = latLngDegreesToDecimal(tmpCircle.lng);
                let radius = tmpCircle.radius;
                let circle = {
                    lineWidth: circleStyle.lineWidth ? circleStyle.lineWidth : Global.amapLineWidth,
                    strokeColor: circleStyle.strokeColor ? circleStyle.strokeColor : Global.amapStrokeColor,
                    fillColor: circleStyle.fillColor ? circleStyle.fillColor : Global.amapFillColor,
                    radius,
                    coordinate
                }
                circles.push(circle);
            }
        }

        return { circles }
    }

    function _getCircleSelector(airspaceInfos, setStyle, currentAirspaceIndex) {
        return createSelector(
            airspaceInfos,
            () => setStyle,
            currentAirspaceIndex,
            _getCircles
        );
    }

    function _isObject(arg) {
        return typeof arg === 'object' && arg !== null;
    }


    function _hasLine(obj) {
        return (isObject(obj)
            && isSafeString(obj.addr)
            && isSafeString(obj.lat)
            && isSafeString(obj.lng));
    }

    function _hasPoint(obj) {
        return (isObject(obj)
            && isSafeString(obj.lat)
            && isSafeString(obj.lng));
    }


    function _drawLineConfig(lat, lng) {
        let coordinate = {};
        coordinate.latitude = latLngDegreesToDecimal(lat);
        coordinate.longitude = latLngDegreesToDecimal(lng);
        return coordinate;
    }

    function _addOvalPointConfig(lat, lng, imageName) {
        let coordinate = {};
        coordinate.latitude = latLngDegreesToDecimal(lat);
        coordinate.longitude = latLngDegreesToDecimal(lng);

        let annotationConfig = {};
        annotationConfig.coordinate = coordinate;
        annotationConfig.imageName = imageName;

        return annotationConfig
    }


    function _getAirwayLine(airway, pointBefore, pointAfter, lineAndMarkerStyle) {
        let found = 0
        let points = []

        for (let point of airway.points) {
            if (pointBefore.point_id == point.point_id || pointAfter.point_id == point.point_id) {
                found++
                points.push(Object.assign({}, point))
                continue
            }

            if (found == 1) {
                points.push(Object.assign({}, point))
            }
        }

        if (!(points.length > 0 && found == 2)) {
            // 如果两个点不全在航线上面，那么画全部航线
            points = airway.points
        }

        let line = {
            lineWidth: lineAndMarkerStyle.lineWidth ? lineAndMarkerStyle.lineWidth : Global.amapLineWidth,
            strokeColor: lineAndMarkerStyle.strokeColor ? lineAndMarkerStyle.strokeColor : Global.amapStrokeColor,
            coordinates: points
        }
        return { line };
    }



    function _getLinesRouter(lineProps, lineAndMarkerStyle) {
        let coordinates = new Array();
        let markers = new Array();
        let lines = []

        if (_hasLine(lineProps.dep)) {
            coordinates.push(_drawLineConfig(lineProps.dep.lat, lineProps.dep.lng));
            markers.push(_addOvalPointConfig(lineProps.dep.lat, lineProps.dep.lng, lineAndMarkerStyle.imageName ? lineAndMarkerStyle.imageName : 'BA_oval'));
        }

        if (Array.isArray(lineProps.passPoints)) {
            for (let i = 0; i < lineProps.passPoints.length; i++) {
                let obj = lineProps.passPoints[i]
                if (_isObject(obj)) {
                    continue;
                }

                if (obj.pointType == Global.pointTypes.point
                    || obj.pointType == Global.pointTypes.nav) {
                    coordinates.push(_drawLineConfig(obj.lat, obj.lng));
                    markers.push(_addOvalPointConfig(obj.lat, obj.lng, lineAndMarkerStyle.imageName ? lineAndMarkerStyle.imageName : 'BA_oval'));
                } else {
                    // 遇到一个航线，不需要和前前面的点连起来
                    if (coordinates.length > 1) {
                        lines.push({
                            lineWidth: lineAndMarkerStyle.lineWidth ? lineAndMarkerStyle.lineWidth : Global.amapLineWidth,
                            strokeColor: lineAndMarkerStyle.strokeColor ? lineAndMarkerStyle.strokeColor : Global.amapStrokeColor,
                            coordinates: coordinates
                        })
                    }

                    coordinates = []

                    const pointBefore = i == 0 ? lineProps.dep : lineProps.passPoints[i - 1]
                    const pointAfter = i == lineProps.passPoints.length - 1 ? lineProps.arrive : lineProps.passPoints[i + 1]

                    lines.push(_getAirwayLine(obj, pointBefore, pointAfter, lineAndMarkerStyle))
                }
            }
        }

        if (_hasLine(lineProps.arrive)) {
            coordinates.push(_drawLineConfig(lineProps.arrive.lat, lineProps.arrive.lng));
            markers.push(_addOvalPointConfig(lineProps.arrive.lat, lineProps.arrive.lng, lineAndMarkerStyle.imageName ? lineAndMarkerStyle.imageName : 'BA_oval'));
        }

        if (coordinates.length > 1) {
            lines.push({
                lineWidth: lineAndMarkerStyle.lineWidth ? lineAndMarkerStyle.lineWidth : Global.amapLineWidth,
                strokeColor: lineAndMarkerStyle.strokeColor ? lineAndMarkerStyle.strokeColor : Global.amapStrokeColor,
                coordinates: coordinates
            });
        }

        return { lines, markers };

    }

    function _getLinesAndMarkers(airspaceInfos, setStyle, currentAirspaceIndex) {
        let retLines = [];
        let retMarkers = [];
        if (!Array.isArray(airspaceInfos)) {
            return { lines: retLines, markers: retMarkers };
        }
        let lineStyle = setStyle('line');
        for (let i = 0; i < airspaceInfos.length; i++) {
            let tmpLine = airspaceInfos[i]
            if (tmpLine.airspaceType == Global.airspaceType.line && currentAirspaceIndex != i) {
                let { lines, markers } = _getLinesRouter(tmpLine, lineStyle);
                retMarkers.push(...markers);
                retLines.push(...lines);
            }
        }

        return { lines: retLines, markers: retMarkers };
    }


    function _getLineAndMarkerSelector(airspaceInfos, setStyle, currentAirspaceIndex) {
        return createSelector(
            airspaceInfos,
            () => setStyle,
            currentAirspaceIndex,
            _getLinesAndMarkers
        );
    }

    function _getPolygon(polygonProps, polygonAndMarkerStyle) {
        let coordinates = new Array();
        let markers = new Array();

        if (Array.isArray(polygonProps.polygonPoints)) {
            for (let obj of polygonProps.polygonPoints) {
                if (!_hasPoint(obj)) {
                    continue;
                }
                coordinates.push(_drawLineConfig(obj.lat, obj.lng));
                markers.push(_addOvalPointConfig(obj.lat, obj.lng, polygonAndMarkerStyle.imageName ? polygonAndMarkerStyle.imageName : 'BA_oval'));
            }
        }

        if (coordinates.length > 0) {
            let polygon = {
                lineWidth: polygonAndMarkerStyle.lineWidth ? polygonAndMarkerStyle.lineWidth : Global.amapLineWidth,
                strokeColor: polygonAndMarkerStyle.strokeColor ? polygonAndMarkerStyle.strokeColor : Global.amapStrokeColor,
                fillColor: polygonAndMarkerStyle.fillColor ? polygonAndMarkerStyle.fillColor : Global.amapFillColor,
                coordinates: coordinates
            };

            return { markers, polygon };
        }
    }


    function _getPolygonsAndMarkers(airspaceInfos, setStyle, currentAirspaceIndex) {
        let markers = [];
        let polygons = [];
        if (!Array.isArray(airspaceInfos)) {
            return { markers, polygons };
        }
        let polygonAndMarkerStyle = setStyle('polygon');
        for (let i = 0; i < airspaceInfos.length; i++) {
            let polygon = airspaceInfos[i]
            if (polygon.airspaceType == Global.flyingTypes.polygon && currentAirspaceIndex != i) {
                let retObj = _getPolygon(polygon)
                markers.push(...retObj.markers);
                polygons.push(retObj.polygon);
            }
        }
        return { markers, polygons };

    }

    function _getPolygonAndMarkerSelector(airspaceInfos, setStyle, currentAirspaceIndex) {
        return createSelector(
            airspaceInfos,
            () => setStyle,
            currentAirspaceIndex,
            _getPolygonsAndMarkers
        );
    }

    function _getMarkers(polygonAndMarkers,lineAndMarkers){
        let markers = [];
        if (polygonAndMarkers) {
            markers = [...polygonAndMarkers.markers]
        }
        if (lineAndMarkers) {
            markers = [...markers, ...lineAndMarkers.markers]
        }
        return markers
    }

    function _getMarkerSelector(polygonAndMarkers,lineAndMarkers) {
        return createSelector(
            polygonAndMarkers,
            lineAndMarkers,
            _getMarkers
        )
    }


    export function getShapesSelect(airspaceInfos, setStyle, currentAirspaceIndex) {
        currentAirspaceIndex = currentAirspaceIndex ? currentAirspaceIndex : () => -1;
        let circles = _getCircleSelector(airspaceInfos, setStyle, currentAirspaceIndex);
        let lineAndMarkers = _getLineAndMarkerSelector(airspaceInfos, setStyle, currentAirspaceIndex);
        let polygonAndMarkers = _getPolygonAndMarkerSelector(airspaceInfos, setStyle, currentAirspaceIndex);
        let markers = _getMarkerSelector(polygonAndMarkers,lineAndMarkers);
        return {
            markers,
            circles,
            lineAndMarkers,
            polygonAndMarkers
        }
    }

    export function getShapes(airspaceInfos, setStyle, currentAirspaceIndex) {
        currentAirspaceIndex = currentAirspaceIndex ? currentAirspaceIndex : () => -1;
        let circles = _getCircles(airspaceInfos, setStyle, currentAirspaceIndex);
        let lineAndMarkers = _getLinesAndMarkers(airspaceInfos, setStyle, currentAirspaceIndex);
        let polygonAndMarkers = _getPolygonsAndMarkers(airspaceInfos, setStyle, currentAirspaceIndex);
        let markers = _getMarkers(polygonAndMarkers,lineAndMarkers);
        return {
            markers,
            circles,
            lineAndMarkers,
            polygonAndMarkers
        }
    }