/**
 * 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 YAxis from '../component/YAxis';

import View from './View';

export default class CandleLastPriceView extends View {
  override drawImp(ctx: CanvasRenderingContext2D): void {
    const widget = this.getWidget();
    const pane = widget.getPane();
    const bounding = widget.getBounding();
    const chartStore = pane.getChart().getChartStore();
    const priceMarkStyles = chartStore.getStyles().candle.priceMark;
    const lastPriceMarkStyles = priceMarkStyles.last;
    const lastPriceMartViewStyles = lastPriceMarkStyles.line;
    if (
      priceMarkStyles.show &&
      lastPriceMarkStyles.show &&
      lastPriceMartViewStyles.show
    ) {
      const yAxis = pane.getAxisComponent() as YAxis;
      const dataList = chartStore.getDataList();
      const data = dataList[dataList.length - 1];
      if (data != null) {
        const { close, open } = data;
        const priceY = yAxis.convertToNicePixel(close);
        let color: string;
        if (close > open) {
          color = lastPriceMarkStyles.upColor;
        } else if (close < open) {
          color = lastPriceMarkStyles.downColor;
        } else {
          color = lastPriceMarkStyles.noChangeColor;
        }
        this.createFigure({
          name: 'line',
          attrs: {
            coordinates: [
              { x: 0, y: priceY },
              { x: bounding.width, y: priceY },
            ],
          },
          styles: {
            style: lastPriceMartViewStyles.style,
            color,
            size: lastPriceMartViewStyles.size,
            dashedValue: lastPriceMartViewStyles.dashedValue,
          },
        })?.draw(ctx);
      }
    }
  }
}