import PointModel from "./PointModel";
import { Feature, FeatureCollection, featureCollection, simplify, polygon } from "@turf/turf";

import { AreaStructure } from "../hpaas-core/types";

type Point = [number, number];

/**
 * 区域模型
 */
class AreaModel {
  id = "";
  name = "";
  type?: number;

  /**
   * 区域边缘线string格式
   */
  private _areaPointText = "";

  /**
   * 区域边缘线array格式
   */
  points?: Point[][];

  /**
   * 区域边缘线GeoJSON格式
   */
  features: FeatureCollection = featureCollection([]);
  politicalType = 0;
  postalCode = 0;
  /**
   * 是否是主区域
   */
  isMain = false;

  /**
   * 设置属性
   */
  setData(data: AreaStructure) {
    this.name = data.name;
    this.id = data.uid;
    this.type = data.type;
    this.areaPointText = data.areaPointText;
  }

  /**
   * 获取属性
   */
  getData(): AreaStructure {
    return {
      name: this.name || "",
      uid: this.id || "",
      type: this.type,
      areaPointText: this.areaPointText,
    };
  }

  /**
   * 私有_areaPointText setter
   * 获取areaPointText的两种转换格式：points、features
   */
  set areaPointText(path: string) {
    this._areaPointText = path;

    const allData: Feature[] = [];
    if (path) {
      this.points = path.split("-").map((p) => {
        const coods = p.split(";").map((p) => {
          const lnglats = p.split(",");
          return [parseFloat(lnglats[0]), parseFloat(lnglats[1])] as Point;
        });
        if (coods[0][0] !== coods[coods.length - 1][0]) {
          coods.push(coods[0]);
        }
        allData.push(polygon([coods]));
        return coods;
      });
    }

    this.features = simplify(featureCollection(allData), {
      tolerance: 0.002,
      highQuality: true,
    });
  }

  /**
   * 私有属性_areaPointText getter
   */
  get areaPointText() {
    return this._areaPointText;
  }

  /**
   * 增加点
   */
  public addPoint(p: PointModel) {
    if (this.points) {
      this.points[0].push([p.lng, p.lat]);
    } else {
      this.points = [[[p.lng, p.lat]]];
    }

    const allData: Feature[] = [];
    const coods = this.points[0];
    if (coods[coods.length - 1][0] != coods[0][0]) {
      coods.push(coods[0]);
    }
    if (coods.length > 3) {
      allData.push(polygon([coods]));
      this.features = featureCollection(allData);
    }
  }

  toServerJson(): AreaStructure {
    return {
      name: this.name,
      uid: this.id,
      type: this.type,
      areaPointText: this._areaPointText,
      politicalType: this.politicalType,
    };
  }

  fromServerJson(json: any) {
    this.name = json.name;
    this.id = json.uid;
    this.type = json.type;
    this.politicalType = json.politicalType;
    this.areaPointText = json.areaPointText;
    this.postalCode = json.postalCode;
  }
}

export default AreaModel;