import * as style from 'ol/style'
import * as geom from 'ol/geom'
import * as extent from "ol/extent";

import MapWarningIconRed from "@/assets/images/web/map-warning-icon-red.svg";
import MapWarningIconYellow from "@/assets/images/web/map-warning-icon-yellow.svg";
import MapWarningIconBlue from "@/assets/images/web/map-warning-icon-blue.svg";
import AIS from './ship-type/AIS.svg'
import AIS_BEIDOU from './ship-type/AIS_BEIDOU.svg'
import AIS_BEIDOU_RADAR from './ship-type/AIS_BEIDOU_RADAR.svg'
import AIS_RADAR from './ship-type/AIS_RADAR.svg'
import BEIDOU from './ship-type/BEIDOU.svg'
import BEIDOU_RADAR from './ship-type/BEIDOU_RADAR.svg'
import OTHER from './ship-type/OTHER.svg'
import RADAR from './ship-type/RADAR.svg'
import FIXED from './ship-type/FIXED.svg'
const shipIcon = {
    AIS, AIS_BEIDOU, AIS_BEIDOU_RADAR, AIS_RADAR, BEIDOU, BEIDOU_RADAR, OTHER, RADAR, FIXED
}

const speedStyle =  (lineRadius, rotation) => {
    return new style.Style({
        image: new style.RegularShape({
            stroke: new style.Stroke({
                color: '#000000',
                width: 1
            }),
            displacement: [0, lineRadius],
            radius: lineRadius,
            rotation,
            points: 2
        })
    })
}
const headingStyle = (lineRadius, headAngle, rotation) => {
    const headRadius = 6
    return new style.Style({
        image: new style.RegularShape({
            stroke: new style.Stroke({
                color: '#ee1919',
                width: 1
            }),
            displacement: [
                headRadius * Math.sin(headAngle / 180 * Math.PI),
                (lineRadius * 2) + headRadius * Math.cos(headAngle / 180 * Math.PI)
            ], //这是偏移量
            radius: headRadius,
            rotation,
            angle: Math.PI / (180 / headAngle), //这是角度计算出的地图上显示的角度
            points: 2
        })
    })
}
const ShipNormalStyle = ({course = 0, speed = 0, head = null, color = '#01f200', mergeType = 'OTHER'}) => {
    const _style: any = []
    const allRotation = Math.PI / (180 / course)
    let lineRadius = 0
    if (speed > 0) {
        if (speed <= 5) {
            lineRadius = 2
        } else if (speed <= 10) {
            lineRadius = 6
        } else if (speed <= 20) {
            lineRadius = 18
        } else if (speed > 20) {
            lineRadius = 30
        }
    }
    // 船速
    _style.push(speedStyle(lineRadius, allRotation))
    if (head) {
        const headAngle = head + (360 - course)
        // 船首向
        _style.push(headingStyle(lineRadius, headAngle, allRotation))
    }
    _style.push(new style.Style({
        image: new style.Icon({
            color: color,
            src: shipIcon[mergeType],
            rotation: allRotation,
            scale: 1
        }),
    }))
    return _style
}
const trackStyle = (feature, resolution, map, color, callback) => {
    const geometry = feature.getGeometry();
    const length = geometry.getLength();//获取线段长度
    const radio = (200 * resolution) / length;
    const dradio = 1;//投影坐标系，如3857等，在EPSG:4326下可以设置dradio=10000
    const _style = [
        new style.Style({
            stroke: new style.Stroke({
                color: color,
                width: 2,
            })
        })
    ];
    const radius = 10
    const longRadius = radius * Math.SQRT2;
    const flag = map.getView().getZoom() < map.getView().getMaxZoom() - 1
    const E = 0.00000001
    const judgeIs = (p1, p2, p3) => {
        const k1 = (ps, pe) => {
            return (pe[1] - ps[1]) / (pe[0] - ps[0])
        }
        const k2 = (ps, pe) => {
            return (pe[0] - ps[0]) / (pe[1] - ps[0])
        }
        const a = (ps, pe) => {
            return Math.abs(k1(p1, ps) - k1(p1, pe)) <= E && Math.abs(k1(p1, ps) - k1(p1, pe)) >= -E
        }
        const d = (ps, pe) => {
            return Math.abs(k2(p1, ps) - k2(p1, pe)) <= E && Math.abs(k2(p1, ps) - k2(p1, pe)) >= -E
        }
        const s = (p) => {
            return p3[0] === p[0] && p3[1] === p[1]
        }
        return s(p1) || s(p2) || a(p2, p3) || d(p2, p3)
    }
    for (let i = 0; i <= 1; i += radio) {
        const arrowLocation = geometry.getCoordinateAt(i);
        if (extent.containsCoordinate(map.getView().calculateExtent(map.getSize()), arrowLocation)) {
            geometry.forEachSegment((start, end) => {
                if (!judgeIs(start, end, arrowLocation)) {
                    return
                }
                let rotation = 0;
                const dx = end[0] - start[0];
                const dy = end[1] - start[1];
                rotation = Math.atan2(dy, dx);
                const pushStyle = (position) => {
                    _style.push(new style.Style({
                        geometry: new geom.Point(position),
                        image: new style.RegularShape({
                            stroke: new style.Stroke({
                                color,
                                width: 2,
                                lineDash: [
                                    longRadius - (4 * (radius / 10)),
                                    longRadius + (5.5 * (radius / 10)),
                                    longRadius,
                                    0
                                ]
                            }),
                            radius: radius / Math.SQRT2,
                            rotation: -rotation,
                            angle: Math.PI / (180 / 90),
                            points: 4
                        })
                    }));
                }
                if (flag) {
                    const dx1 = end[0] - arrowLocation[0];
                    const dy1 = end[1] - arrowLocation[1];
                    const dx2 = arrowLocation[0] - start[0];
                    const dy2 = arrowLocation[1] - start[1];
                    if (dx1 != dx2 && dy1 != dy2) {
                        if (Math.abs(dradio * dx1 * dy2 - dradio * dx2 * dy1) < 0.001) {
                            pushStyle(arrowLocation)
                        }
                    }
                } else {
                    if (Math.sqrt(Math.pow(start[0] - end[0], 2) + Math.pow(start[1] - end[1], 2)) > resolution * 100) {
                        pushStyle([(start[0] + end[0]) / 2, (start[1] + end[1]) / 2])
                    }
                }
            });
        }
    }
    const trackPointList = feature.get('trackPointList')
    const pList: any = []
    let trackPointListIndex = 0
    let lC = 0
    pList.push(trackPointList[0])
    if (flag) {
        geometry.forEachSegment((start, end) => {
            trackPointListIndex++
            const l = new geom.LineString([start,end])
            lC += l.getLength()
            if (extent.containsCoordinate(map.getView().calculateExtent(map.getSize()), end) && lC > 200 * resolution) {
                pList.push(trackPointList[trackPointListIndex])
                lC = 0
            }
        });
    } else {
        geometry.forEachSegment((start, end) => {
            trackPointListIndex++
            const l = new geom.LineString([start,end])
            if (extent.containsCoordinate(map.getView().calculateExtent(map.getSize()), end)) {
                pList.push(trackPointList[trackPointListIndex])
            }
        });
    }
    const arr: any = []
    const num = 100
    const step = Math.ceil(_style.length / num)
    for (let i = 0; i < _style.length; i += step) {
        arr.push(_style[i])
    }
    return callback([..._style, ...arr], pList)
}
const trackPointNormalStyle = (color) => {
    const _style: any = []
    _style.push(new style.Style({
        image: new style.Circle({
            radius: 3,
            fill: new style.Fill({
                color: color,
            }),
            stroke: new style.Stroke({
                color: '#ffffff',
                width: 1,
            }),
        })
    }))
    return _style
}

const warningStyle = (level) => {
    let icon = MapWarningIconBlue;
    switch (warningStyle) {
        case 1: {icon = MapWarningIconRed}
            break;
        case 2: {icon = MapWarningIconYellow}
            break;
        case 3: {icon = MapWarningIconBlue}
            break;
    }
    return new style.Style({
        image: new style.Icon({
            src: icon,
            scale: 2,
            anchor: [0.5, 0],
            anchorOrigin: 'bottom-left',
            anchorXUnits: 'fraction', // 定位点的单位
            anchorYUnits: 'fraction',
        }),
    })
}
export default {
    ShipNormalStyle,
    trackStyle,
    trackPointNormalStyle,
    warningStyle,
}