import 'package:finamp/services/jellyfin_api_helper.dart';
import 'package:finamp/l10n/app_localizations.dart';
import 'package:flutter/material.dart';
import 'package:get_it/get_it.dart';

import '../../models/finamp_models.dart';
import '../../services/downloads_helper.dart';
import '../../models/jellyfin_models.dart';
import '../album_image.dart';
import '../confirmation_prompt_dialog.dart';
import 'item_media_source_info.dart';
import 'album_file_size.dart';

class DownloadedAlbumsList extends StatefulWidget {
  const DownloadedAlbumsList({Key? key}) : super(key: key);

  @override
  State<DownloadedAlbumsList> createState() => _DownloadedAlbumsListState();
}

class _DownloadedAlbumsListState extends State<DownloadedAlbumsList> {
  final DownloadsHelper downloadsHelper = GetIt.instance<DownloadsHelper>();

  final JellyfinApiHelper jellyfinApiHelper = JellyfinApiHelper();

  Future<void> deleteAlbum(
      BuildContext context, DownloadedParent downloadedParent) async {
    List<String> itemIds = [];
    for (BaseItemDto item in downloadedParent.downloadedChildren.values) {
      itemIds.add(item.id);
    }
    await downloadsHelper.deleteParentAndChildDownloads(
        jellyfinItemIds: itemIds, deletedFor: downloadedParent.item.id);
  }

  @override
  Widget build(BuildContext context) {
    final Iterable<DownloadedParent> downloadedParents =
        downloadsHelper.downloadedParents;

    return SliverList(
      delegate: SliverChildBuilderDelegate(
        (context, index) {
          DownloadedParent album = downloadedParents.elementAt(index);
          return ExpansionTile(
            key: PageStorageKey(album.item.id),
            leading: AlbumImage(item: album.item),
            title: Text(album.item.name ?? "Unknown Name"),
            trailing: IconButton(
                icon: const Icon(Icons.delete),
                onPressed: () => showDialog(
                  context: context,
                  builder: (context) => ConfirmationPromptDialog(
                    promptText: AppLocalizations.of(context)!
                        .deleteDownloadsPrompt(
                            album.item.name ?? "",
                            album.item.type == "Playlist"
                                ? "playlist"
                                : "album"),
                    confirmButtonText: AppLocalizations.of(context)!
                        .deleteDownloadsConfirmButtonText,
                    abortButtonText: AppLocalizations.of(context)!
                        .deleteDownloadsAbortButtonText,
                    onConfirmed: () async {
                      await deleteAlbum(context, album);
                      setState(() {});
                    },
                    onAborted: () {},
                  ),
                ),
            ),
            subtitle: AlbumFileSize(
              downloadedParent: album,
            ),
            children: [
              DownloadedSongsInAlbumList(
                children: album.downloadedChildren.values,
                parent: album,
              )
            ],
          );
        },
        childCount: downloadedParents.length,
      ),
    );
  }
}

class DownloadedSongsInAlbumList extends StatefulWidget {
  const DownloadedSongsInAlbumList(
      {Key? key, required this.children, required this.parent})
      : super(key: key);

  final Iterable<BaseItemDto> children;
  final DownloadedParent parent;

  @override
  State<DownloadedSongsInAlbumList> createState() =>
      _DownloadedSongsInAlbumListState();
}

class _DownloadedSongsInAlbumListState
    extends State<DownloadedSongsInAlbumList> {
  final DownloadsHelper downloadsHelper = GetIt.instance<DownloadsHelper>();

  @override
  Widget build(BuildContext context) {
    return Column(children: [
      //TODO use a list builder here
      for (final song in widget.children)
        ListTile(
          title: Text(song.name ?? "Unknown Name"),
          leading: AlbumImage(item: song),
          trailing: IconButton(
              icon: const Icon(Icons.delete),
              onPressed: () => showDialog(
                context: context,
                builder: (context) => ConfirmationPromptDialog(
                  promptText: AppLocalizations.of(context)!
                      .deleteDownloadsPrompt(
                          song.name ?? "",
                          "track"),
                  confirmButtonText: AppLocalizations.of(context)!
                      .deleteDownloadsConfirmButtonText,
                  abortButtonText: AppLocalizations.of(context)!
                      .deleteDownloadsAbortButtonText,
                  onConfirmed: () async {
                    await deleteSong(context, song);
                    setState(() {});
                  },
                  onAborted: () {},
                ),
              ),
          ),
          subtitle: ItemMediaSourceInfo(
            songId: song.id,
          ),
        )
    ]);
  }

  Future<void> deleteSong(BuildContext context, BaseItemDto itemDto) async {
    widget.parent.downloadedChildren
        .removeWhere((key, value) => value == itemDto);
    await downloadsHelper.deleteSong(jellyfinItemId: itemDto.id);
  }
}