/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at

 * http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { getLinearYFromCoordinates } from '../figure/line';

import { type OverlayTemplate } from '../../component/Overlay';

const straightLine: OverlayTemplate = {
  name: 'straightLine',
  totalStep: 3,
  needDefaultPointFigure: true,
  needDefaultXAxisFigure: true,
  needDefaultYAxisFigure: true,
  createPointFigures: ({ coordinates, bounding }) => {
    if (coordinates.length === 2) {
      if (coordinates[0].x === coordinates[1].x) {
        return [
          {
            type: 'line',
            attrs: {
              coordinates: [
                {
                  x: coordinates[0].x,
                  y: 0,
                },
                {
                  x: coordinates[0].x,
                  y: bounding.height,
                },
              ],
            },
          },
        ];
      }
      return [
        {
          type: 'line',
          attrs: {
            coordinates: [
              {
                x: 0,
                y: getLinearYFromCoordinates(coordinates[0], coordinates[1], {
                  x: 0,
                  y: coordinates[0].y,
                }),
              },
              {
                x: bounding.width,
                y: getLinearYFromCoordinates(coordinates[0], coordinates[1], {
                  x: bounding.width,
                  y: coordinates[0].y,
                }),
              },
            ],
          },
        },
      ];
    }
    return [];
  },
};

export default straightLine;