/**
 * 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 { type OverlayTemplate } from '../../component/Overlay';
import { isFunction, isValid } from '../../common/utils/typeChecks';
import { LineType } from '../../common/Styles';

const simpleAnnotation: OverlayTemplate = {
  name: 'simpleAnnotation',
  totalStep: 2,
  styles: {
    line: { style: LineType.Dashed },
  },
  createPointFigures: ({ overlay, coordinates }) => {
    let text;
    if (isValid(overlay.extendData)) {
      if (!isFunction(overlay.extendData)) {
        text = overlay.extendData ?? '';
      } else {
        text = overlay.extendData(overlay);
      }
    }
    const startX = coordinates[0].x;
    const startY = coordinates[0].y - 6;
    const lineEndY = startY - 50;
    const arrowEndY = lineEndY - 5;
    return [
      {
        type: 'line',
        attrs: {
          coordinates: [
            { x: startX, y: startY },
            { x: startX, y: lineEndY },
          ],
        },
        ignoreEvent: true,
      },
      {
        type: 'polygon',
        attrs: {
          coordinates: [
            { x: startX, y: lineEndY },
            { x: startX - 4, y: arrowEndY },
            { x: startX + 4, y: arrowEndY },
          ],
        },
        ignoreEvent: true,
      },
      {
        type: 'text',
        attrs: {
          x: startX,
          y: arrowEndY,
          text: text ?? '',
          align: 'center',
          baseline: 'bottom',
        },
        ignoreEvent: true,
      },
    ];
  },
};

export default simpleAnnotation;