import type { CanvasRenderer } from '@blocksuite/affine-block-surface';
import { ExportManager } from '@blocksuite/affine-block-surface';
import type { SurfaceRefBlockComponent } from '@blocksuite/affine-block-surface-ref';
import type { EditorHost } from '@blocksuite/block-std';
import {
  GfxControllerIdentifier,
  type GfxModel,
} from '@blocksuite/block-std/gfx';
import { BlockSuiteError } from '@blocksuite/global/exceptions';
import { Bound } from '@blocksuite/global/gfx';

export const edgelessToBlob = async (
  host: EditorHost,
  options: {
    surfaceRefBlock: SurfaceRefBlockComponent;
    surfaceRenderer: CanvasRenderer;
    edgelessElement: GfxModel;
  }
): Promise<Blob> => {
  const { edgelessElement } = options;
  const exportManager = host.std.get(ExportManager);
  const bound = Bound.deserialize(edgelessElement.xywh);
  const gfx = host.std.get(GfxControllerIdentifier);

  const canvas = await exportManager.edgelessToCanvas(
    options.surfaceRenderer,
    bound,
    gfx,
    undefined,
    undefined,
    { zoom: options.surfaceRenderer.viewport.zoom }
  );

  if (!canvas) {
    throw new BlockSuiteError(
      BlockSuiteError.ErrorCode.ValueNotExists,
      'Failed to export edgeless to canvas'
    );
  }

  return new Promise((resolve, reject) => {
    canvas.toBlob(blob => (blob ? resolve(blob) : reject(null)), 'image/png');
  });
};

export const writeImageBlobToClipboard = async (blob: Blob) => {
  await navigator.clipboard.write([new ClipboardItem({ [blob.type]: blob })]);
};