import Point from "../Geometry/Point.js";
import Line from "../Geometry/Line.js";
import { dataService } from "./DataService.js";
import VectorCategory from "../enum/VectorCategory.js";
import { mathUtil } from "../Util/MathUtil.js";

export default class LineService {
  constructor() {}

  create(startPoint, endPoint, category, vectorId) {
    if (!startPoint || !endPoint || mathUtil.equalPoint(startPoint, endPoint)) {
      return null;
    }
    let start = new Point(startPoint);
    let end = new Point(endPoint);
    let line = new Line(start.vectorId, end.vectorId, vectorId);
    if (category) {
      line.setCategory(category);
    }
    start.setPointParent(line.vectorId, "start");
    end.setPointParent(line.vectorId, "end");
    dataService.addPoint(start);
    dataService.addPoint(end);
    dataService.addLine(line);
    return line;
  }

  createByPointId(startId, endId, category, vectorId) {
    let line = new Line(startId, endId, vectorId);
    if (category) {
      line.setCategory(category);
    }
    let start = dataService.getPoint(startId);
    let end = dataService.getPoint(endId);
    start.setPointParent(line.vectorId, "start");
    end.setPointParent(line.vectorId, "end");
    dataService.addLine(line);
    return line;
  }
}

const lineService = new LineService();
export { lineService };