import { listenLayer } from "../ListenLayer";
import Constant from "../Constant";
// import { mathUtil } from "../MathUtil";
import { dataService } from "../Service/DataService";
import { pointService } from "../Service/PointService";
import { elementService } from "../Service/ElementService";
// import { wallService } from "../Service/WallService";
import { stateService } from "../Service/StateService";
import { symbolService } from "../Service/SymbolService";
import VectorType from "../enum/VectorType";
import { roadService } from "../Service/RoadService";

export default class AddRoad {
  constructor() {
    this.startInfo = {};
    this.endInfo = {};
    this.canAdd = false;
  }

  setPointInfo(dir, pointInfo) {
    if (dir == "start") {
      this.startInfo = {
        position: {
          x: pointInfo.x,
          y: pointInfo.y,
        },
        linkedPointId: pointInfo.linkedPointId,
        linkedRoadId: pointInfo.linkedRoadId,
      };
    } else if (dir == "end") {
      this.endInfo = {
        position: {
          x: pointInfo.x,
          y: pointInfo.y,
        },
        linkedPointId: pointInfo.linkedPointId,
        linkedRoadId: pointInfo.linkedRoadId,
      };
    }
  }

  buildRoad() {
    console.log("添加路段！");
    let joinInfos = this.getJoinsForRoads();
    let splitPointIds = this.splitAllJoins(joinInfos);
    this.creatNewRoads(splitPointIds);
    this.canAdd = false;
    this.updateStart(
      this.endInfo.position,
      splitPointIds[splitPointIds.length - 1]
    );
    listenLayer.clear();
  }

  //开始新建公路，可能是多个
  creatNewRoads(splitPointIds) {
    for (let i = 0; i < splitPointIds.length - 1; ++i) {
      let pointId1 = splitPointIds[i];
      let pointId2 = splitPointIds[i + 1];
      let roadId = roadService.getRoadId(pointId1, pointId2);
      if (!roadId) {
        let road = roadService.create(pointId1, pointId2);
      }
    }
  }

  canAddRoadForEnd(endPt) {
    if (listenLayer.modifyPoint) {
      if (
        mathUtil.getDistance(this.startInfo.position, listenLayer.modifyPoint) <
        Constant.minAdsorb
      ) {
        return false;
      }
    } else {
      if (
        mathUtil.getDistance(this.startInfo.position, endPt) <
        Constant.minAdsorb
      ) {
        return false;
      }
    }
    return true;
  }

  getJoinsForRoads() {
    let result = [];
    const roads = dataService.getRoads();
    let hasComputerPointIds = [];
    let hasExitPointIds = [];

    if (this.startInfo.linkedPointId) {
      hasComputerPointIds.push(this.startInfo.linkedPointId);
      hasExitPointIds.push(this.startInfo.linkedPointId);
      result.push({
        join: { x: this.startInfo.position.x, y: this.startInfo.position.y },
        pointId: this.startInfo.linkedPointId,
      });
    } else if (this.startInfo.linkedRoadId) {
      result.push({
        join: { x: this.startInfo.position.x, y: this.startInfo.position.y },
        roadId: this.startInfo.linkedRoadId,
      });
    } else {
      result.push({
        join: { x: this.startInfo.position.x, y: this.startInfo.position.y },
      });
    }

    if (this.endInfo.linkedPointId) {
      hasComputerPointIds.push(this.endInfo.linkedPointId);
      hasExitPointIds.push(this.endInfo.linkedPointId);
      result.push({
        join: { x: this.endInfo.position.x, y: this.endInfo.position.y },
        pointId: this.endInfo.linkedPointId,
      });
    } else if (this.endInfo.linkedRoadId) {
      result.push({
        join: { x: this.endInfo.position.x, y: this.endInfo.position.y },
        roadId: this.endInfo.linkedRoadId,
      });
    } else {
      result.push({
        join: { x: this.endInfo.position.x, y: this.endInfo.position.y },
      });
    }

    const line = mathUtil.createLine1(
      this.startInfo.position,
      this.endInfo.position
    );
    for (let key in roads) {
      if (this.startInfo.linkedRoadId && this.startInfo.linkedRoadId == key) {
        continue;
      } else if (
        this.endInfo.linkedRoadId &&
        this.endInfo.linkedRoadId == key
      ) {
        continue;
      }

      let road = roads[key];
      if (
        hasExitPointIds.indexOf(road.startId) > -1 ||
        hasExitPointIds.indexOf(road.endId) > -1
      ) {
        continue;
      }

      let startPoint = dataService.getPoint(road.startId);
      let endPoint = dataService.getPoint(road.endId);
      let flag = false;

      if (hasComputerPointIds.indexOf(road.startId) < 0) {
        hasComputerPointIds.push(road.startId);
        const startJoin = mathUtil.getJoinLinePoint(startPoint, line);
        if (
          mathUtil.PointInSegment(
            startJoin,
            this.startInfo.position,
            this.endInfo.position,
            Constant.minAdsorb
          ) &&
          mathUtil.getDistance(startPoint, startJoin) < Constant.minAdsorb
        ) {
          result.push({
            join: { x: startJoin.x, y: startJoin.y },
            pointId: road.startId,
          });
          flag = true;

          hasExitPointIds.push(road.startId);
        }
      }

      if (hasComputerPointIds.indexOf(road.endId) < 0) {
        hasComputerPointIds.push(road.endId);
        const endJoin = mathUtil.getJoinLinePoint(endPoint, line);
        if (
          mathUtil.PointInSegment(
            endJoin,
            this.startInfo.position,
            this.endInfo.position,
            Constant.minAdsorb
          ) &&
          mathUtil.getDistance(endPoint, endJoin) < Constant.minAdsorb
        ) {
          result.push({
            join: { x: endJoin.x, y: endJoin.y },
            pointId: road.endId,
          });
          flag = true;

          hasExitPointIds.push(road.endId);
        }
      }

      if (!flag) {
        //不与墙key的端点相交
        if (
          hasExitPointIds.indexOf(road.startId) < 0 &&
          hasExitPointIds.indexOf(road.endId) < 0
        ) {
          let join = mathUtil.getIntersectionPoint3(
            startPoint,
            endPoint,
            this.startInfo.position,
            this.endInfo.position
          );
          if (join) {
            result.push({ join: { x: join.x, y: join.y }, roadId: key });
          }
        }
      }
    }
    return result;
  }

  splitAllJoins(joinInfos) {
    // 对joinInfos要进行排序
    joinInfos = joinInfos.sort(sortNumber.bind(this));
    function sortNumber(a, b) {
      return (
        mathUtil.getDistance(this.startInfo.position, a.join) -
        mathUtil.getDistance(this.startInfo.position, b.join)
      );
    }

    const splitPointIds = [];
    for (let i = 0; i < joinInfos.length; ++i) {
      const info = joinInfos[i];
      const join = info.join;
      const roadId = info.roadId;
      const pointId = info.pointId;

      if (pointId) {
        splitPointIds.push(pointId);
      } else if (roadId) {
        // 拆分roadId
        const splitPoint = pointService.create(join);
        const splitPointId = splitPoint.vectorId;
        //可能joinInfos的两个点都在roadId上
        let newRoadId = null;
        if (
          joinInfos[i + 1] &&
          joinInfos[i].roadId == joinInfos[i + 1].roadId
        ) {
          let road = dataService.getRoad(roadId);
          let startPoint = dataService.getPoint(road.startId);
          if (
            mathUtil.getDistance(startPoint, joinInfos[i].join) <
            mathUtil.getDistance(startPoint, joinInfos[i + 1].join)
          ) {
            newRoadId = roadService.splitRoad(roadId, splitPointId, "end");
          } else {
            newRoadId = roadService.splitRoad(roadId, splitPointId, "start");
          }
        } else {
          newRoadId = roadService.splitRoad(roadId, splitPointId, "start");
        }

        if (newRoadId == null) {
          dataService.deletePoint(splitPointId);
          continue;
        }
        splitPointIds.push(splitPointId);
      }
      //首尾没有吸附的情况
      else {
        const splitPoint = pointService.create(join);
        splitPointIds.push(splitPoint.vectorId);
      }
    }
    return splitPointIds;
  }

  updateStart(position, linkedPointId) {
    mathUtil.clonePoint(this.startInfo.position, position);
    this.startInfo.linkedPointId = linkedPointId;
    //elementService.setNewWallStartPosition(this.startInfo.position);
  }

  clear() {
    this.startInfo = {};
    this.endInfo = {};
    this.canAdd = false;
    //elementService.hideNewWall();
    //elementService.hideStartAddWall();
  }
}

const addRoad = new AddRoad();
export { addRoad };