fluffychat/lib/utils/file_selector.dart

import 'package:flutter/widgets.dart';

import 'package:file_picker/file_picker.dart';
import 'package:file_selector/file_selector.dart';

import 'package:fluffychat/utils/platform_infos.dart';
import 'package:fluffychat/widgets/app_lock.dart';
import 'package:fluffychat/widgets/future_loading_dialog.dart';

Future<List<XFile>> selectFiles(
  BuildContext context, {
  String? title,
  FileSelectorType type = FileSelectorType.any,
  bool allowMultiple = false,
}) async {
  if (!PlatformInfos.isLinux) {
    final result = await AppLock.of(context).pauseWhile(
      showFutureLoadingDialog(
        context: context,
        future: () => FilePicker.platform.pickFiles(
          compressionQuality: 0,
          allowMultiple: allowMultiple,
          type: type.filePickerType,
          allowedExtensions: type.extensions,
        ),
      ),
    );
    return result.result?.xFiles ?? [];
  }

  if (allowMultiple) {
    return await AppLock.of(context).pauseWhile(
      openFiles(
        confirmButtonText: title,
        acceptedTypeGroups: type.groups,
      ),
    );
  }
  final file = await AppLock.of(context).pauseWhile(
    openFile(
      confirmButtonText: title,
      acceptedTypeGroups: type.groups,
    ),
  );
  if (file == null) return [];
  return [file];
}

enum FileSelectorType {
  any([], FileType.any, null),
  images(
    [
      XTypeGroup(
        label: 'JPG',
        extensions: <String>['jpg', 'JPG', 'jpeg', 'JPEG'],
      ),
      XTypeGroup(
        label: 'PNGs',
        extensions: <String>['png', 'PNG'],
      ),
      XTypeGroup(
        label: 'WEBP',
        extensions: <String>['WebP', 'WEBP'],
      ),
      XTypeGroup(
        label: 'GIF',
        extensions: <String>['gif', 'GIF'],
      ),
      XTypeGroup(
        label: 'BMP',
        extensions: <String>['bmp', 'BMP'],
      ),
      XTypeGroup(
        label: 'TIFF',
        extensions: <String>['tiff', 'TIFF', 'tif', 'TIF'],
      ),
      XTypeGroup(
        label: 'HEIC',
        extensions: <String>['heic', 'HEIC'],
      ),
      XTypeGroup(
        label: 'SVG',
        extensions: <String>['svg', 'SVG'],
      ),
    ],
    FileType.image,
    null,
  ),
  videos(
    [
      XTypeGroup(
        label: 'MP4',
        extensions: <String>['mp4', 'MP4'],
      ),
      XTypeGroup(
        label: 'AVI',
        extensions: <String>['avi', 'AVI'],
      ),
      XTypeGroup(
        label: 'MOV',
        extensions: <String>['mov', 'MOV'],
      ),
      XTypeGroup(
        label: 'MKV',
        extensions: <String>['mkv', 'MKV'],
      ),
      XTypeGroup(
        label: 'WMV',
        extensions: <String>['wmv', 'WMV'],
      ),
      XTypeGroup(
        label: 'FLV',
        extensions: <String>['flv', 'FLV'],
      ),
      XTypeGroup(
        label: 'MPEG',
        extensions: <String>['mpeg', 'MPEG'],
      ),
      XTypeGroup(
        label: '3GP',
        extensions: <String>['3gp', '3GP'],
      ),
      XTypeGroup(
        label: 'OGG',
        extensions: <String>['ogg', 'OGG'],
      ),
    ],
    FileType.video,
    null,
  ),
  zip(
    [
      XTypeGroup(
        label: 'ZIP',
        extensions: <String>['zip', 'ZIP'],
      ),
    ],
    FileType.custom,
    ['zip', 'ZIP'],
  );

  const FileSelectorType(this.groups, this.filePickerType, this.extensions);
  final List<XTypeGroup> groups;
  final FileType filePickerType;
  final List<String>? extensions;
}