#拡張開発

import match from 'mime-match';
import { Plugin, attachmentFileTypes } from '@nocobase/client';

class MyPlugin extends Plugin {
  load() {
    attachmentFileTypes.add({
      match(file) {
        return match(file.mimetype, 'image/*');
      },
      Previewer({ index, list, onSwitchIndex }) {
        const onDownload = useCallback(
          (e) => {
            e.preventDefault();
            const file = list[index];
            saveAs(file.url, `${file.title}${file.extname}`);
          },
          [index, list],
        );
        return (
          <LightBox
            // discourageDownloads={true}
            mainSrc={list[index]?.url}
            nextSrc={list[(index + 1) % list.length]?.url}
            prevSrc={list[(index + list.length - 1) % list.length]?.url}
            onCloseRequest={() => onSwitchIndex(null)}
            onMovePrevRequest={() => onSwitchIndex((index + list.length - 1) % list.length)}
            onMoveNextRequest={() => onSwitchIndex((index + 1) % list.length)}
            imageTitle={list[index]?.title}
            toolbarButtons={[
              <button
                key={'preview-img'}
                style={{ fontSize: 22, background: 'none', lineHeight: 1 }}
                type="button"
                aria-label="Download"
                title="Download"
                className="ril-zoom-in ril__toolbarItemChild ril__builtinButton"
                onClick={onDownload}
              >
                <DownloadOutlined />
              </button>,
            ]}
          />
        );
      },
    });
  }
}

export interface FileModel {
  id: number;
  filename: string;
  path: string;
  title: string;
  url: string;
  extname: string;
  size: number;
  mimetype: string;
}

export interface PreviewerProps {
  index: number;
  list: FileModel[];
  onSwitchIndex(index): void;
}

export interface AttachmentFileType {
  match(file: any): boolean;
  Previewer?: React.ComponentType<PreviewerProps>;
}

export class AttachmentFileTypes {
  add(type: AttachmentFileType): void;
}

import { attachmentFileTypes } from '@nocobase/client';

onSwitchIndex(null);