import React from 'react';
import PropTypes from 'prop-types';
import {pointsDistance, angleBetweenTwoPointsAndOrigin} from '../../utils/geometry';
import Ruler from './ruler';

export default function Line({line, layer, scene, catalog, fontSize}) {

  let vertex0 = layer.vertices.get(line.vertices.get(0));
  let vertex1 = layer.vertices.get(line.vertices.get(1));

  if (vertex0.id === vertex1.id) return null; //avoid 0-length lines
  if (vertex0.x === vertex1.x && vertex0.y === vertex1.y) return null;

  let {x: x1, y: y1} = vertex0;
  let {x: x2, y: y2} = vertex1;

  if (x1 > x2) {
    ({x: x1, y: y1} = vertex1);
    ({x: x2, y: y2} = vertex0);
  }

  let length = pointsDistance(x1, y1, x2, y2);
  let angle = angleBetweenTwoPointsAndOrigin(x1, y1, x2, y2);

  let renderedHoles = line.holes.map(holeID => {
    let hole = layer.holes.get(holeID);
    let startAt = length * hole.offset;
    let renderedHole = catalog.getElement(hole.type).render2D(hole, layer, scene, fontSize);

    return <g
      key={holeID}
      transform={`translate(${startAt}, 0)`}
      data-element-root
      data-prototype={hole.prototype}
      data-id={hole.id}
      data-selected={hole.selected}
      data-layer={layer.id}
    > {renderedHole} </g>;
  });

  let {unit} = scene;

  let renderedLine = catalog.getElement(line.type).render2D(line, layer);
  let renderedRuler = line.selected ? <Ruler unit={unit} length={length} transform="translate(0, 15)"/> : null;

  return (
    <g
      transform={`translate(${x1}, ${y1}) rotate(${angle}, 0, 0)`}
      data-element-root
      data-prototype={line.prototype}
      data-id={line.id}
      data-selected={line.selected}
      data-layer={layer.id}
      style={line.selected ? {cursor: "move"} : {}}
    >
      {/*renderedRuler*/}
      {renderedLine}
      {renderedHoles}
    </g>
  );

}

Line.propTypes = {
  line: PropTypes.object.isRequired,
  layer: PropTypes.object.isRequired,
  scene: PropTypes.object.isRequired,
  catalog: PropTypes.object.isRequired,
};