import { FillLayerBackgroundCommand } from "../commands/FillLayerBackgroundCommand";

export class BackgroundFillManager {
  constructor({ canvas, layers, commandManager, canvasManager }) {
    this.canvas = canvas;
    this.layers = layers;
    this.commandManager = commandManager;
    this.canvasManager = canvasManager;
  }

  /**
   * 填充指定图层背景
   * @param {string} layerId 图层ID
   * @param {string} fillColor 填充颜色
   */
  async fillLayerBackground(layerId, fillColor) {
    const command = new FillLayerBackgroundCommand({
      canvas: this.canvas,
      layers: this.layers,
      layerId,
      fillColor,
      canvasManager: this.canvasManager,
    });
    if (this.commandManager) {
      await this.commandManager.execute(command);
    } else {
      await command.execute();
    }
  }
}