import 'package:logging/logging.dart';
import 'package:nc_photos/account.dart';
import 'package:nc_photos/entity/album.dart';
import 'package:nc_photos/entity/album/item.dart';
import 'package:nc_photos/entity/album/provider.dart';
import 'package:nc_photos/entity/file.dart';
import 'package:nc_photos/entity/share.dart';
import 'package:nc_photos/use_case/list_share.dart';
import 'package:nc_photos/use_case/remove.dart';
import 'package:nc_photos/use_case/remove_share.dart';
import 'package:nc_photos/use_case/unshare_file_from_album.dart';

class RemoveAlbum {
  const RemoveAlbum(this.fileRepo, this.albumRepo, this.shareRepo);

  /// Remove an album
  Future<void> call(Account account, Album album) async {
    _log.info("[call] Remove album: $album");
    final files = <File>[];
    if (album.provider is AlbumStaticProvider) {
      files.addAll(AlbumStaticProvider.of(album)
          .items
          .whereType<AlbumFileItem>()
          .map((e) => e.file));
    }
    final albumShares = (await ListShare(shareRepo)(account, album.albumFile!))
        .where((element) => element.shareType == ShareType.user)
        .toList();
    final albumShareWith = albumShares.map((e) => e.shareWith!).toList();
    // remove file shares if necessary
    if (files.isNotEmpty && albumShareWith.isNotEmpty) {
      try {
        await UnshareFileFromAlbum(shareRepo, fileRepo, albumRepo)(
            account, album, files, albumShareWith);
      } catch (e, stackTrace) {
        _log.severe("[call] Failed while UnshareFileFromAlbum", e, stackTrace);
      }
    }
    // then remove the album file
    // Nextcloud currently will restore also the shares after restoring from
    // trash, but we aren't handling it for the files, so
    for (final s in albumShares) {
      try {
        await RemoveShare(shareRepo)(account, s);
      } catch (e, stackTrace) {
        _log.severe("[call] Failed while RemoveShare: $s", e, stackTrace);
      }
    }
    // you can't add an album to another album, so passing null here can save
    // a few queries
    await Remove(fileRepo, null)(account, album.albumFile!);
  }

  final FileRepo fileRepo;
  final AlbumRepo albumRepo;
  final ShareRepo shareRepo;

  static final _log = Logger("use_case.remove_album.RemoveAlbum");
}