import { roadService } from "../Service/RoadService";
import { dataService } from "../Service/DataService";
import Constant from "../Constant";
import { mathUtil } from "../Util/MathUtil";
import { elementService } from "../Service/ElementService";
import { coordinate } from "../Coordinate";

export default class MoveRoad {
  constructor() {
    this.startMoving = false;
    this.moveFlag = false;

    //拖拽墙角的时候，墙角的父亲与其他墙角相交
    this.adsorbPointRoads = {};

    //拖拽墙角的时候，该墙角与其他墙面相交
    this.splitRoadId = null;
  }

  setStartMoving(value) {
    this.startMoving = value;
  }

  // 测试要考虑pointId拖拽到包含他的所有墙的另一头
  // 这个函数不会删除/拆分/合并墙或者点
  movePoint(pointId, position, modifyPoint) {
    let point = dataService.getPoint(pointId);
    let linkedPointId = null;
    let linkedRoadId = null;

    if (modifyPoint != null) {
      position = {
        x: modifyPoint.x,
        y: modifyPoint.y,
      };
      linkedPointId = modifyPoint.linkedPointId;
      linkedRoadId = modifyPoint.linkedRoadId;
    }
    this.adsorbPointRoads = {};
    this.splitRoadId = null;
    let flag = this.canMoveForPoint(
      pointId,
      position,
      linkedPointId,
      linkedRoadId
    );

    if (!flag) {
      if (
        this.splitRoadId == null &&
        Object.keys(this.adsorbPointRoads).length > 0
      ) {
        //要吸附一下
        const adsorbPointId = Object.keys(this.adsorbPointRoads)[0];
        const road = dataService.getRoad(this.adsorbPointRoads[adsorbPointId]);

        const otherPointId = road.getOtherPointId(pointId);
        let otherPoint = dataService.getPoint(otherPointId);
        let modifyPoint = dataService.getPoint(adsorbPointId);
        let line = mathUtil.createLine1(otherPoint, modifyPoint);
        position = mathUtil.getJoinLinePoint(position, line);
        point.setPosition(position);
      }
      return false;
    }

    let newPosition = null;
    if (modifyPoint == null) {
      //90°或者180°纠正
      //不考虑当前角度

      //当前点的parent只有一个，考虑邻居点
      let neighPoints = roadService.getNeighPoints(pointId);
      if (neighPoints.length == 1) {
        newPosition = elementService.checkAngle(
          position,
          neighPoints[0].vectorId,
          pointId
        );
      }
      //当前点的parent有两个
      else if (neighPoints.length == 2) {
        newPosition = elementService.checkAngle(
          position,
          neighPoints[0].vectorId,
          pointId
        );
        if (!newPosition) {
          newPosition = elementService.checkAngle(
            position,
            neighPoints[1].vectorId,
            pointId
          );
        }
      }

      if (newPosition) {
        flag = this.canMoveForPoint(
          pointId,
          newPosition,
          linkedPointId,
          linkedRoadId
        );
        if (!flag) {
          return false;
        }
        mathUtil.clonePoint(position, newPosition);
      }

      point.setPosition(position);
    }
    // 与别的墙角重合
    else if (
      modifyPoint.hasOwnProperty("linkedPointId") &&
      modifyPoint.linkedPointId != null
    ) {
      const roadId = roadService.getRoadId(pointId, modifyPoint.linkedPointId);
      // pointId与linkedPointId属于同一堵墙，不允许，所以不移动
      if (roadId != null) {
        return false;
      } else {
        point.setPosition(modifyPoint);
      }
    }
    // 与别的墙面重合
    // 如果墙面的交点与其余墙角的距离过短，那也不允许拖动
    else if (modifyPoint.hasOwnProperty("linkedRoadId")) {
      const road = dataService.getRoad(modifyPoint.linkedRoadId);
      const startPoint = dataService.getPoint(road.startId);
      const endPoint = dataService.getPoint(road.endId);

      // 与其余墙角的距离过短，不允许拖动
      if (
        mathUtil.getDistance(startPoint, position) < Constant.minRealDis ||
        mathUtil.getDistance(endPoint, position) < Constant.minRealDis
      ) {
        return false;
      }
      point.setPosition(modifyPoint);
    } else {
      if (
        modifyPoint.hasOwnProperty("linkedPointIdX") &&
        modifyPoint.linkedPointIdX
      ) {
        point.setPosition(position);
      }

      if (
        modifyPoint.hasOwnProperty("linkedPointIdY") &&
        modifyPoint.linkedPointIdY
      ) {
        point.setPosition(position);
      }
    }

    return true;
  }

  //拖拽墙角/墙面，被其他墙角吸附
  updateForAbsorbRoadPoints() {
    if (Object.keys(this.adsorbPointRoads).length == 0) {
      return;
    } else if (Object.keys(this.adsorbPointRoads).length == 2) {
      debugger;
    }

    let joins = [];
    let roadId = null;
    for (let key in this.adsorbPointRoads) {
      let point = dataService.getPoint(key);
      joins.push({
        join: point,
        pointId: key,
      });
      roadId = this.adsorbPointRoads[key];
    }

    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);

    function sortNumber(a, b) {
      return (
        mathUtil.getDistance(startPoint, a.join) -
        mathUtil.getDistance(startPoint, b.join)
      );
    }

    joins = joins.sort(sortNumber.bind(this));

    for (let i = 0; i < joins.length; ++i) {
      const info = joins[i];
      const join = info.join;
      const pointId = info.pointId;
      roadService.splitRoad(roadId, pointId, "end");
    }
  }

  getNewPointsForMoveRoad(roadId, dx, dy) {
    dx = dx / coordinate.res;
    dy = -dy / coordinate.res;

    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);
    const endPoint = dataService.getPoint(road.endId);

    const p1 = { x: startPoint.x + dx, y: startPoint.y + dy };
    const p2 = { x: endPoint.x + dx, y: endPoint.y + dy };

    return {
      point1: p1,
      point2: p2,
    };
  }

  getTwoLimitInfos(roadId, newLine) {
    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);
    const endPoint = dataService.getPoint(road.endId);
    let startLimitLine, endLimitLine, info;
    const roadLine = roadService.getMidLine(road);

    const limitInfos = {};
    limitInfos.newStartRoadId = false; // 不需要新建墙
    limitInfos.newEndRoadId = false; // 不需要新建墙

    // 先处理start
    if (Object.keys(startPoint.parent).length == 1) {
      startLimitLine = mathUtil.getVerticalLine(roadLine, startPoint);
      limitInfos.startRoadId = null;
    } else if (Object.keys(startPoint.parent).length == 2) {
      let tempRoad;
      if (Object.keys(startPoint.parent)[0] == roadId) {
        tempRoad = dataService.getRoad(Object.keys(startPoint.parent)[1]);
      } else if (Object.keys(startPoint.parent)[1] == roadId) {
        tempRoad = dataService.getRoad(Object.keys(startPoint.parent)[0]);
      }
      if (!tempRoad) {
        console.error(352);
      }
      const angle = roadService.AngleForRoad(tempRoad.vectorId, roadId);
      startLimitLine = roadService.getMidLine(tempRoad);
      limitInfos.startRoadId = tempRoad.vectorId;
      if (angle > (Constant.maxAngle / 180) * Math.PI) {
        startLimitLine = mathUtil.getVerticalLine(roadLine, startPoint);
        limitInfos.startRoadId = null;
        limitInfos.newStartRoadId = true;
      }
    } else {
      let tempRoad, tempRoadId;
      info = roadService.roadIdForMinAngle(road.startId, roadId);
      const road1 = dataService.getRoad(info.min0.roadId);
      const startPoint1 = dataService.getPoint(road1.startId);
      const endPoint1 = dataService.getPoint(road1.endId);
      const road2 = dataService.getRoad(info.min1.roadId);
      const startPoint2 = dataService.getPoint(road2.startId);
      const endPoint2 = dataService.getPoint(road2.endId);

      const join1 = mathUtil.getIntersectionPoint4(
        startPoint1,
        endPoint1,
        newLine
      );
      const join2 = mathUtil.getIntersectionPoint4(
        startPoint2,
        endPoint2,
        newLine
      );

      // 取角度大的
      if (join1 == null && join2 == null) {
        let angle0 = roadService.AngleForRoad(roadId, info.min0.roadId);
        let angle1 = roadService.AngleForRoad(roadId, info.min1.roadId);
        if (angle0 > Math.PI) {
          angle0 = Math.PI - angle0;
        }
        if (angle1 > Math.PI) {
          angle1 = Math.PI - angle1;
        }
        if (angle0 < angle1) {
          tempRoadId = info.min0.roadId;
        } else {
          tempRoadId = info.min1.roadId;
        }
        limitInfos.newStartRoadId = true;
      }
      // 取角度小的
      else if (join1 != null && join2 != null) {
        if (info.min0.angle < info.min1.angle) {
          tempRoadId = info.min0.roadId;
        } else {
          tempRoadId = info.min1.roadId;
        }
      } else if (join1 == null && join2 != null) {
        tempRoadId = info.min1.roadId;
      } else if (join1 != null && join2 == null) {
        tempRoadId = info.min0.roadId;
      }
      limitInfos.startRoadId = tempRoadId;
      tempRoad = dataService.getRoad(tempRoadId);
      const angle = roadService.AngleForRoad(tempRoadId, roadId);
      startLimitLine = roadService.getMidLine(tempRoad);

      let join = mathUtil.getIntersectionPoint(startLimitLine, newLine);
      const tempStartPoint = dataService.getPoint(tempRoad.startId);
      const tempEndPoint = dataService.getPoint(tempRoad.endId);
      if (
        angle > (Constant.maxAngle / 180) * Math.PI ||
        !mathUtil.isPointOnSegment(join, tempStartPoint, tempEndPoint)
      ) {
        startLimitLine = mathUtil.getVerticalLine(roadLine, startPoint);
        limitInfos.startRoadId = null;
        limitInfos.newStartRoadId = true;
      }
    }

    // 再处理end
    if (Object.keys(endPoint.parent).length == 1) {
      endLimitLine = mathUtil.getVerticalLine(roadLine, endPoint);
      limitInfos.endRoadId = null;
    } else if (Object.keys(endPoint.parent).length == 2) {
      let tempRoad;
      if (Object.keys(endPoint.parent)[0] == roadId) {
        tempRoad = dataService.getRoad(Object.keys(endPoint.parent)[1]);
      } else if (Object.keys(endPoint.parent)[1] == roadId) {
        tempRoad = dataService.getRoad(Object.keys(endPoint.parent)[0]);
      }
      const angle = roadService.AngleForRoad(tempRoad.vectorId, roadId);
      endLimitLine = roadService.getMidLine(tempRoad);
      limitInfos.endRoadId = tempRoad.vectorId;
      if (angle > (Constant.maxAngle / 180) * Math.PI) {
        endLimitLine = mathUtil.getVerticalLine(roadLine, endPoint);
        limitInfos.endRoadId = null;
        limitInfos.newEndRoadId = true;
      }
    } else {
      let tempRoad, tempRoadId;
      info = dataService.roadIdForMinAngle(road.endId, roadId);
      const road1 = dataService.getRoad(info.min0.roadId);
      const startPoint1 = dataService.getPoint(road1.startId);
      const endPoint1 = dataService.getPoint(road1.endId);
      const road2 = dataService.getRoad(info.min1.roadId);
      const startPoint2 = dataService.getPoint(road2.startId);
      const endPoint2 = dataService.getPoint(road2.endId);

      const join1 = mathUtil.getIntersectionPoint4(
        startPoint1,
        endPoint1,
        newLine
      );
      const join2 = mathUtil.getIntersectionPoint4(
        startPoint2,
        endPoint2,
        newLine
      );

      // 取角度大的
      if (join1 == null && join2 == null) {
        let angle0 = roadService.AngleForRoad(roadId, info.min0.roadId);
        let angle1 = roadService.AngleForRoad(roadId, info.min1.roadId);
        if (angle0 > Math.PI) {
          angle0 = Math.PI - angle0;
        }
        if (angle1 > Math.PI) {
          angle1 = Math.PI - angle1;
        }
        if (angle0 < angle1) {
          tempRoadId = info.min0.roadId;
        } else {
          tempRoadId = info.min1.roadId;
        }
        limitInfos.newEndRoadId = true;
      }
      // 取角度小的
      else if (join1 != null && join2 != null) {
        if (info.min0.angle < info.min1.angle) {
          tempRoadId = info.min0.roadId;
        } else {
          tempRoadId = info.min1.roadId;
        }
      } else if (join1 == null && join2 != null) {
        tempRoadId = info.min1.roadId;
      } else if (join1 != null && join2 == null) {
        tempRoadId = info.min0.roadId;
      }
      limitInfos.endRoadId = tempRoadId;
      tempRoad = dataService.getRoad(tempRoadId);
      const angle = roadService.AngleForRoad(tempRoadId, roadId);
      endLimitLine = roadService.getMidLine(tempRoad);
      let join = mathUtil.getIntersectionPoint(endLimitLine, newLine);
      const tempStartPoint = dataService.getPoint(tempRoad.start);
      const tempEndPoint = dataService.getPoint(tempRoad.end);

      if (
        angle > (Constant.maxAngle / 180) * Math.PI ||
        !mathUtil.isPointOnSegment(join, tempStartPoint, tempEndPoint)
      ) {
        endLimitLine = mathUtil.getVerticalLine(roadLine, endPoint);
        limitInfos.endRoadId = null;
        limitInfos.newEndRoadId = true;
      }
    }
    limitInfos.startLimitLine = startLimitLine;
    limitInfos.endLimitLine = endLimitLine;
    return limitInfos;
  }

  // 是否可以移动point
  // 两个判断：拖拽的墙（可能是多个），一方面不能与其他墙相交，另一方面这些墙之间或者与别的墙之间的角度必须大于Constant.minAngle
  canMoveForPoint(pointId, position, linkedPointId, linkedRoadId) {
    const point = dataService.getPoint(pointId);
    // 先判断第二点(这些墙之间或者与别的墙之间的角度必须大于MinAngle)
    let flag = this.isOKForMinAngleRoad(pointId, position);
    // 开始考虑第一点
    if (flag) {
      // 不仅仅角度，还有相交
      flag = this.isOKForCross(
        pointId,
        position,
        point.parent,
        linkedPointId,
        linkedRoadId
      );
    }
    return flag;
  }

  isOKForMinAngleRoad(pointId, position) {
    const point = dataService.getPoint(pointId);
    const parent = point.parent;

    const angle = this.getMinAngle(pointId, position);
    if (Math.abs(angle) < (Constant.minAngle / 180) * Math.PI) {
      return false;
    }

    // 判断邻居点
    for (const key in parent) {
      const road = dataService.getRoad(key);
      const otherPointId = road.getOtherPointId(pointId);
      const info = this.getNeighMinAngle(otherPointId, key, position);
      if (info && Math.abs(info.angle) < (Constant.minAngle / 180) * Math.PI) {
        return false;
      } else {
        const otherPoint = dataService.getPoint(otherPointId);
        if (mathUtil.getDistance(position, otherPoint) < Constant.minRealDis) {
          return false;
        }
      }
    }

    return true;
  }

  //点pointId移动到position后，求出最小角度
  getMinAngle(pointId, position) {
    const point = dataService.getPoint(pointId);
    const parent = point.parent;
    let angle = null;
    if (Object.keys(parent).length == 1) {
      return 2 * Math.PI;
    } else if (Object.keys(parent).length == 2) {
      const road1 = dataService.getRoad(Object.keys(parent)[0]);
      const road2 = dataService.getRoad(Object.keys(parent)[1]);

      const otherPointId1 = road1.getOtherPointId(pointId);
      const otherPoint1 = dataService.getPoint(otherPointId1);
      const otherPointId2 = road2.getOtherPointId(pointId);
      const otherPoint2 = dataService.getPoint(otherPointId2);

      angle = mathUtil.Angle(position, otherPoint1, otherPoint2);
      return angle;
    } else {
      const _position = {
        x: position.x + 1,
        y: position.y,
      };
      let angles = [];
      for (const key in parent) {
        const road = dataService.getRoad(key);
        const otherPointId = road.getOtherPointId(pointId);
        const otherPoint = dataService.getPoint(otherPointId);
        if (mathUtil.equalPoint(_position, otherPoint)) {
          angles.push(0);
          continue;
        } else {
          let angle = mathUtil.Angle(position, _position, otherPoint);
          // 统一按照逆时针顺序
          if (otherPoint.y < position.y) {
            angle = 2 * Math.PI - angle;
          }
          angles.push(angle);
        }
      }

      angles = angles.sort(sortNumber);

      let minAngle = 2 * Math.PI;
      for (let i = 0; i < angles.length - 1; ++i) {
        for (let j = i + 1; j < angles.length; ++j) {
          const _angle = angles[j] - angles[i];
          if (_angle < minAngle) {
            minAngle = _angle;
          }
        }
      }

      const angle1 = angles[0];
      const angle2 = angles[angles.length - 1];
      if (angle1 < Math.PI && angle2 > Math.PI) {
        const dAngle = 2 * Math.PI + angle1 - angle2;
        if (dAngle < minAngle) {
          minAngle = dAngle;
        }
      }
      return minAngle;
    }

    function sortNumber(a, b) {
      return a - b;
    }
  }

  // 用于邻居点
  // pointId是顶点
  // position是roadId相对于pointId另一头的点的坐标，一般发生改变的时候使用这个函数
  getNeighMinAngle(otherPointId, roadId, position) {
    const point1 = dataService.getPoint(otherPointId);
    const point2 = {
      x: position.x,
      y: position.y,
    };
    let pointId3 = null;
    let point3 = null;
    let minAngle = null;
    let result = null;

    for (const key in point1.parent) {
      if (key == roadId) {
        continue;
      }

      const road = dataService.getRoad(key);
      pointId3 = road.getOtherPointId(otherPointId);
      point3 = dataService.getPoint(pointId3);

      const angle = mathUtil.Angle(point1, point2, point3);
      if (minAngle == null || minAngle > angle) {
        minAngle = angle;
        result = {
          angle: minAngle,
          pointId: pointId3,
        };
      }
    }
    return result;
  }

  // linkedPointId,linkedRoadId表示吸附
  // roadIds是pointId的parent
  isOKForCross(pointId, position, roadIds, linkedPointId, linkedRoadId) {
    const roads = dataService.getRoads();
    for (const key in roads) {
      if (roadIds.hasOwnProperty(key)) {
        continue;
      } else if (linkedRoadId == key) {
        continue;
      }

      for (const _key in roadIds) {
        //相连就不用考虑了
        if (roadService.isRoadLink(key, _key)) {
          continue;
        }
        const _road = dataService.getRoad(_key);
        const otherPointId = _road.getOtherPointId(pointId);
        const otherPoint = dataService.getPoint(otherPointId);

        const flag = this.isOKForCrossTwoRoad(
          position,
          otherPoint,
          key,
          linkedPointId,
          linkedRoadId,
          _road.vectorId
        );
        // 交叉
        if (!flag) {
          this.adsorbPointRoads = {};
          return false;
        }
      }
    }
    //需要吸附了。
    if (Object.keys(this.adsorbPointRoads).length > 0) {
      return false;
    } else if (this.splitRoadId != null) {
      return false;
    }
    // 不交叉
    return true;
  }

  // position1表示拖拽的点的坐标（修复过了的）
  // position2对应墙的另一头坐标
  // roadId表示其余的墙（与position1无关的墙）
  isOKForCrossTwoRoad(
    position1,
    position2,
    roadId,
    linkedPointId,
    linkedRoadId,
    dragRoadId
  ) {
    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);
    const endPoint = dataService.getPoint(road.endId);
    const join = mathUtil.getIntersectionPoint3(
      position1,
      position2,
      startPoint,
      endPoint
    );
    if (join && road.startId != linkedPointId && road.endId != linkedPointId) {
      // 交叉了
      this.splitRoadId = roadId;
      return true;
    } else {
      if (mathUtil.equalPoint(position1, position2)) {
        return true;
      }
      let line = mathUtil.createLine1(position1, position2);
      let join1 = mathUtil.getJoinLinePoint(startPoint, line);
      let join2 = mathUtil.getJoinLinePoint(endPoint, line);

      if (
        mathUtil.getDistance(join1, startPoint) < Constant.minRealDis &&
        mathUtil.PointInSegment(join1, position1, position2)
      ) {
        if (road.startId != linkedPointId) {
          // 交叉了
          this.adsorbPointRoads[startPoint.vectorId] = dragRoadId;
          //为了找到全部的吸附点，暂时返回true,在外面一层再做判断
          return true;
        }
      } else if (
        mathUtil.getDistance(join2, endPoint) < Constant.minRealDis &&
        mathUtil.PointInSegment(join2, position1, position2)
      ) {
        if (road.endId != linkedPointId) {
          // 交叉了
          this.adsorbPointRoads[endPoint.vectorId] = dragRoadId;
          //为了找到全部的吸附点，暂时返回true,在外面一层再做判断
          return true;
        }
      }

      line = mathUtil.createLine1(startPoint, endPoint);
      join1 = mathUtil.getJoinLinePoint(position1, line);
      join2 = mathUtil.getJoinLinePoint(position2, line);
      if (
        mathUtil.getDistance(join1, position1) < Constant.minRealDis &&
        mathUtil.PointInSegment(join1, startPoint, endPoint)
      ) {
        if (
          road.startId != linkedPointId &&
          road.endId != linkedPointId &&
          roadId != linkedRoadId
        ) {
          // 交叉了
          //return false
          return true;
        }
      } else if (
        mathUtil.getDistance(join2, position2) < Constant.minRealDis &&
        mathUtil.PointInSegment(join2, startPoint, endPoint)
      ) {
        if (
          road.startId != linkedPointId &&
          road.endId != linkedPointId &&
          roadId != linkedRoadId
        ) {
          // 交叉了
          //return false
          return true;
        }
      }
    }

    return true;
  }

  isOKForCrossTwoRoad2(position1, position2, roadId) {
    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);
    const endPoint = dataService.getPoint(road.endId);
    let flag = mathUtil.crossTwoLines(
      position1,
      position2,
      startPoint,
      endPoint,
      0.01
    );
    if (flag) {
      // 交叉了
      return false;
    } else {
      if (mathUtil.equalPoint(position1, position2)) {
        return true;
      }
      flag = this.isCoincide(position1, position2, roadId);
      if (!flag) {
        return false;
      }
    }

    return true;
  }

  isOKForCrossTwoRoad3(position1, position2, roadId) {
    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);
    const endPoint = dataService.getPoint(road.endId);
    const flag = mathUtil.crossTwoLines(
      position1,
      position2,
      startPoint,
      endPoint,
      0.01
    );
    if (flag) {
      // 交叉了
      return false;
    } else {
      if (mathUtil.equalPoint(position1, position2)) {
        return true;
      }
      let line = mathUtil.createLine1(position1, position2);
      let join1 = mathUtil.getJoinLinePoint(startPoint, line);
      const join2 = mathUtil.getJoinLinePoint(endPoint, line);

      if (
        mathUtil.getDistance(join1, startPoint) < Constant.minRealDis &&
        mathUtil.isPointOnSegment(join1, position1, position2)
      ) {
        // 交叉了
        return false;
      } else if (
        mathUtil.getDistance(join2, endPoint) < Constant.minRealDis &&
        mathUtil.isPointOnSegment(join2, position1, position2)
      ) {
        // 交叉了
        return false;
      }

      line = mathUtil.createLine1(startPoint, endPoint);
      join1 = mathUtil.getJoinLinePoint(position1, line);
      if (
        mathUtil.getDistance(join1, position1) < Constant.minRealDis &&
        roadService.isContain(road, join1)
      ) {
        // 交叉了
        return false;
      }
    }

    return true;
  }

  isCoincide(position1, position2, roadId) {
    const road = dataService.getRoad(roadId);
    const startPoint = dataService.getPoint(road.startId);
    const endPoint = dataService.getPoint(road.endId);
    let line = mathUtil.createLine1(position1, position2);
    let join1 = mathUtil.getJoinLinePoint(startPoint, line);
    let join2 = mathUtil.getJoinLinePoint(endPoint, line);
    if (
      mathUtil.getDistance(join1, startPoint) < Constant.minRealDis &&
      mathUtil.PointInSegment(join1, position1, position2)
    ) {
      // 交叉了
      return false;
    } else if (
      mathUtil.getDistance(join2, endPoint) < Constant.minRealDis &&
      mathUtil.PointInSegment(join2, position1, position2)
    ) {
      // 交叉了
      return false;
    }

    line = mathUtil.createLine1(startPoint, endPoint);
    join1 = mathUtil.getJoinLinePoint(position1, line);
    join2 = mathUtil.getJoinLinePoint(position2, line);

    if (
      mathUtil.getDistance(join1, position1) < Constant.minRealDis &&
      roadService.isContain(road, join1)
    ) {
      // 交叉了
      return false;
    } else if (
      mathUtil.getDistance(join2, position2) < Constant.minRealDis &&
      roadService.isContain(road, join2)
    ) {
      // 交叉了
      return false;
    }
    return true;
  }

  // 更新virtualPosition（一般是吸附）
  updateVirtualPosition(pointId, virtualPosition, limitRoadId, needNew) {
    const limitRoad = dataService.getRoad(limitRoadId);
    const point = dataService.getPoint(pointId);
    let otherPointId, otherPoint;
    let adsorb = false;
    // 不需要新建墙
    if (!needNew) {
      if (limitRoad != null) {
        otherPointId = limitRoad.getOtherPointId(pointId);
        otherPoint = dataService.getPoint(otherPointId);
        // 会吸附另一头
        if (
          mathUtil.getDistance(virtualPosition, otherPoint) <
            Constant.minRealDis ||
          (!roadService.isContain(limitRoad, virtualPosition) &&
            mathUtil.getDistance(virtualPosition, otherPoint) <
              mathUtil.getDistance(virtualPosition, point))
        ) {
          mathUtil.clonePoint(virtualPosition, otherPoint);
          adsorb = true;
        }
      }
    }
    // 需要新建墙
    else {
      // 新建的墙太短，不允许
      if (mathUtil.getDistance(point, virtualPosition) < Constant.minRealDis) {
        return null;
      }
    }
    return {
      adsorb: adsorb,
      adsorbPointId: adsorb ? otherPointId : null,
      virtualPosition: virtualPosition,
    };
  }

  // 两条线段的夹角，这两条线段分别有一个端点挨的很近
  isOKForTwoSegmentsAngle(pointId, pointId1, pointId2) {
    const point = dataService.getPoint(pointId);
    const point1 = dataService.getPoint(pointId1);
    const point2 = dataService.getPoint(pointId2);
    const dx = point.x - point1.x;
    const dy = point.y - point1.y;

    const newPoint2 = {
      x: dx + point2.x,
      y: dy + point2.y,
    };

    for (const key in point.parent) {
      const road = dataService.getRoad(key);
      const otherPointId = road.getOtherPointId(pointId);
      const otherPoint = dataService.getPoint(otherPointId);
      const angle = mathUtil.Angle(point, otherPoint, newPoint2);
      if (Math.abs(angle) < (Constant.minAngle / 180) * Math.PI) {
        return false;
      }
    }
    return true;
  }

  // 一头吸附后，是否会重合
  // pointId属于roadId，当pointId吸附到adsorbPointId时
  isCoincideForAdsorbOne(pointId, adsorbPointId, roadId) {
    if (pointId && adsorbPointId) {
      const road = dataService.getRoad(roadId);
      const otherPointId = road.getOtherPointId(pointId);
      const _roadId = roadService.getRoadId(otherPointId, adsorbPointId);
      if (_roadId != null) {
        return true;
      }
    }
    return false;
  }

  isCoincideForAdsorbOne2(roadId, adsorbPointId1, adsorbPointId2) {
    if (adsorbPointId1 && adsorbPointId2) {
      const _roadId = roadService.getRoadId(adsorbPointId1, adsorbPointId2);
      if (_roadId != null) {
        return true;
      }
      // 可能吸附的是两堵墙，但是这两堵墙呈180°
      else {
        let adsorbPoint = dataService.getPoint(adsorbPointId1);
        let parent = adsorbPoint.parent;
        for (const key in parent) {
          const angle = roadService.AngleForRoad3(roadId, key);
          if (Math.abs(angle) < (Constant.minAngle / 180) * Math.PI) {
            return true;
          }
        }

        adsorbPoint = dataService.getPoint(adsorbPointId2);
        parent = adsorbPoint.parent;
        for (const key in parent) {
          const angle = roadService.AngleForRoad3(roadId, key);
          if (Math.abs(angle) < (Constant.minAngle / 180) * Math.PI) {
            return true;
          }
        }
      }
    }
    return false;
  }

  // position1和position2表示road的两个端点坐标（下一步的）
  // position3和position4表示road的start一边的线段（startPoint——virtualStartPoint）
  // position5和position6表示road的end一边的线段（endPoint——virtualEndPoint）
  // adsorbPointId1对应start那一头的吸附点
  // adsorbPointId2对应end那一头的吸附点
  isOKForCrossForMoveRoad(
    position1,
    position2,
    roadId,
    startPointId,
    endPointId,
    adsorbPointId1,
    adsorbPointId2
  ) {
    const startPoint = dataService.getPoint(startPointId);
    const endPoint = dataService.getPoint(endPointId);
    let flag = true;
    const roads = dataService.getRoads();
    for (const key in roads) {
      if (key == roadId) {
        continue;
      }

      let flag1 = true;
      let flag2 = true;

      const _road = dataService.getRoad(key);
      if (
        adsorbPointId1 &&
        (adsorbPointId1 == _road.startId || adsorbPointId1 == _road.endId)
      ) {
        flag1 = false;
      }
      if (
        adsorbPointId2 &&
        (adsorbPointId2 == _road.startId || adsorbPointId2 == _road.endId)
      ) {
        flag2 = false;
      }

      if (_road.startId == startPointId || _road.endId == startPointId) {
        flag1 = false;
      }

      if (_road.startId == endPointId || _road.endId == endPointId) {
        flag2 = false;
      }

      // 两头不连
      if (flag1 && flag2) {
        flag = this.isOKForCrossTwoRoad2(position1, position2, key);
      }

      if (!flag) {
        return false;
      }
      if (
        flag1 &&
        _road.startId != startPointId &&
        _road.endId != startPointId
      ) {
        flag = this.isOKForCrossTwoRoad3(position1, startPoint, key);
      }

      if (!flag) {
        return false;
      }

      if (flag2 && _road.startId != endPointId && _road.endId != endPointId) {
        flag = this.isOKForCrossTwoRoad3(position2, endPoint, key);
      }

      if (!flag) {
        return false;
      }
    }
    return flag;
  }

  // 更新pointId的坐标
  updatePointForMoveRoad(roadId, pointId, virtualInfo, limitRoadId, needNew) {
    const point = dataService.getPoint(pointId);
    const road = dataService.getRoad(roadId);
    // 如果没有约束墙，只有两种情况：一种是不新建墙，另一种是需要新建墙
    if (limitRoadId == null) {
      // 不需要新建墙，这种情况一般是pointId的parent只有一个
      if (!needNew) {
        point.setPosition(virtualInfo.virtualPosition);
      }
      // 新建墙
      else {
        this.createRoadForMoveRoad(
          pointId,
          roadId,
          virtualInfo.virtualPosition
        );
      }
    } else {
      /*
        不新建墙：
        1. 更新坐标（一种是当pointId的parent是2个，另一种是三个，但是roadId对应的两堵墙接近180°）
        2. 拆分墙
        3. 吸附邻居墙的另一个端点
        新建墙：
        */
      // 不新建墙
      if (!needNew) {
        if (!virtualInfo.adsorb) {
          // 只更新坐标
          if (Object.keys(point.parent).length == 2) {
            point.setPosition(virtualInfo.virtualPosition);
          } else {
            const info = roadService.roadIdForMinAngle(pointId, roadId);
            const angle = roadService.AngleForRoad(
              info.min0.roadId,
              info.min1.roadId
            );
            // 只更新坐标
            if (
              Object.keys(point.parent).length == 3 &&
              angle > (Constant.maxAngle / 180) * Math.PI
            ) {
              point.setPosition(virtualInfo.virtualPosition);
            }
            // 拆分墙
            else {
              const dir = roadService.getDirction(pointId, roadId);
              // 先断开链接
              roadService.subtraRoadFromIntersect(pointId, roadId);
              const newPointId = road.getPointId(dir);
              const newPoint = dataService.getPoint(newPointId);
              // 更新新坐标
              newPoint.setPosition(virtualInfo.virtualPosition);
              // 拆分
              roadService.splitRoad(limitRoadId, newPointId, dir);
            }
          }
        }
        // 吸附邻居墙的另一个端点。
        else {
          roadService.moveTo(pointId, virtualInfo.adsorbPointId);
        }
      }
      // 新建墙
      else {
        this.createRoadForMoveRoad(
          pointId,
          roadId,
          virtualInfo.virtualPosition
        );
      }
    }
  }

  //
  createRoadForMoveRoad(pointId, roadId, newPosition) {
    const road = dataService.getRoad(roadId);
    const dir = roadService.getDirction(pointId, roadId);

    // 第一步是断开连接
    roadService.subtraRoadFromIntersect(pointId, roadId);
    // 第二步更新端点坐标
    const newPointId = road.getPointId(dir);
    const newPoint = dataService.getPoint(newPointId);
    newPoint.setPosition(newPosition);
    // 第三步先新建墙
    roadService.create(pointId, newPointId);
    // 还缺少road和newRoad相交，这需要等另一头的point完成后最后处理
  }

  deleteRoadForLinked(roadId) {
    const road = dataService.getRoad(roadId);
    roadService.subtraRoadFromIntersect(road.startId, roadId);
    roadService.subtraRoadFromIntersect(road.endId, roadId);
    dataService.deleteRoad(roadId);
  }
}

const moveRoad = new MoveRoad();
export { moveRoad };