import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:paperless_mobile/core/bloc/label_bloc_provider.dart';
import 'package:paperless_mobile/di_initializer.dart';
import 'package:paperless_mobile/features/documents/bloc/documents_cubit.dart';
import 'package:paperless_mobile/features/documents/model/query_parameters/correspondent_query.dart';
import 'package:paperless_mobile/features/documents/model/query_parameters/document_type_query.dart';
import 'package:paperless_mobile/features/documents/model/query_parameters/storage_path_query.dart';
import 'package:paperless_mobile/features/documents/model/query_parameters/tags_query.dart';
import 'package:paperless_mobile/features/labels/correspondent/bloc/correspondents_cubit.dart';
import 'package:paperless_mobile/features/labels/correspondent/view/pages/edit_correspondent_page.dart';
import 'package:paperless_mobile/features/labels/document_type/bloc/document_type_cubit.dart';
import 'package:paperless_mobile/features/documents/model/document_filter.dart';
import 'package:paperless_mobile/features/home/view/widget/info_drawer.dart';
import 'package:paperless_mobile/features/labels/correspondent/model/correspondent.model.dart';
import 'package:paperless_mobile/features/labels/correspondent/view/pages/add_correspondent_page.dart';
import 'package:paperless_mobile/features/labels/document_type/model/document_type.model.dart';
import 'package:paperless_mobile/features/labels/document_type/view/pages/add_document_type_page.dart';
import 'package:paperless_mobile/features/labels/document_type/view/pages/edit_document_type_page.dart';
import 'package:paperless_mobile/features/labels/model/label.model.dart';
import 'package:paperless_mobile/features/labels/storage_path/bloc/storage_path_cubit.dart';
import 'package:paperless_mobile/features/labels/storage_path/model/storage_path.model.dart';
import 'package:paperless_mobile/features/labels/storage_path/view/pages/add_storage_path_page.dart';
import 'package:paperless_mobile/features/labels/storage_path/view/pages/edit_storage_path_page.dart';
import 'package:paperless_mobile/features/labels/tags/model/tag.model.dart';
import 'package:paperless_mobile/features/labels/tags/view/pages/add_tag_page.dart';
import 'package:paperless_mobile/features/labels/tags/view/pages/edit_tag_page.dart';
import 'package:paperless_mobile/features/labels/view/widgets/label_item.dart';
import 'package:paperless_mobile/features/labels/view/widgets/label_tab_view.dart';
import 'package:paperless_mobile/features/labels/tags/bloc/tags_cubit.dart';
import 'package:paperless_mobile/generated/l10n.dart';

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

  @override
  State<LabelsPage> createState() => _LabelsPageState();
}

class _LabelsPageState extends State<LabelsPage> with SingleTickerProviderStateMixin {
  late final TabController _tabController;
  int _currentIndex = 0;

  @override
  void initState() {
    super.initState();
    BlocProvider.of<CorrespondentCubit>(context).initialize();
    BlocProvider.of<DocumentTypeCubit>(context).initialize();
    BlocProvider.of<TagCubit>(context).initialize();

    _tabController = TabController(length: 4, vsync: this)
      ..addListener(() => setState(() => _currentIndex = _tabController.index));
  }

  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
      length: 3,
      child: Scaffold(
        drawer: const InfoDrawer(),
        appBar: AppBar(
          title: Text(
            [
              S.of(context).labelsPageCorrespondentsTitleText,
              S.of(context).labelsPageDocumentTypesTitleText,
              S.of(context).labelsPageTagsTitleText,
              S.of(context).labelsPageStoragePathTitleText
            ][_currentIndex],
          ),
          actions: [
            IconButton(
              onPressed: _onAddPressed,
              icon: const Icon(Icons.add),
            )
          ],
          bottom: PreferredSize(
            preferredSize: const Size.fromHeight(kToolbarHeight),
            child: ColoredBox(
              color: Theme.of(context).bottomAppBarColor,
              child: TabBar(
                indicatorColor: Theme.of(context).colorScheme.primary,
                controller: _tabController,
                tabs: [
                  Tab(
                    icon: Icon(
                      Icons.person_outline,
                      color: Theme.of(context).colorScheme.onPrimaryContainer,
                    ),
                  ),
                  Tab(
                    icon: Icon(
                      Icons.description_outlined,
                      color: Theme.of(context).colorScheme.onPrimaryContainer,
                    ),
                  ),
                  Tab(
                    icon: Icon(
                      Icons.label_outline,
                      color: Theme.of(context).colorScheme.onPrimaryContainer,
                    ),
                  ),
                  Tab(
                    icon: Icon(
                      Icons.folder_open,
                      color: Theme.of(context).colorScheme.onPrimaryContainer,
                    ),
                  )
                ],
              ),
            ),
          ),
        ),
        body: TabBarView(
          controller: _tabController,
          children: [
            LabelTabView<Correspondent>(
              cubit: BlocProvider.of<CorrespondentCubit>(context),
              filterBuilder: (label) => DocumentFilter(
                correspondent: CorrespondentQuery.fromId(label.id),
                pageSize: label.documentCount ?? 0,
              ),
              onOpenEditPage: _openEditCorrespondentPage,
            ),
            LabelTabView<DocumentType>(
              cubit: BlocProvider.of<DocumentTypeCubit>(context),
              filterBuilder: (label) => DocumentFilter(
                documentType: DocumentTypeQuery.fromId(label.id),
                pageSize: label.documentCount ?? 0,
              ),
              onOpenEditPage: _openEditDocumentTypePage,
            ),
            LabelTabView<Tag>(
              cubit: BlocProvider.of<TagCubit>(context),
              filterBuilder: (label) => DocumentFilter(
                tags: TagsQuery.fromIds([label.id!]),
                pageSize: label.documentCount ?? 0,
              ),
              onOpenEditPage: _openEditTagPage,
              leadingBuilder: (t) => CircleAvatar(backgroundColor: t.color),
            ),
            LabelTabView<StoragePath>(
              cubit: BlocProvider.of<StoragePathCubit>(context),
              onOpenEditPage: _openEditStoragePathPage,
              filterBuilder: (label) => DocumentFilter(
                storagePath: StoragePathQuery.fromId(label.id),
                pageSize: label.documentCount ?? 0,
              ),
              contentBuilder: (path) => Text(path.path ?? ""),
            ),
          ],
        ),
      ),
    );
  }

  void _openEditCorrespondentPage(Correspondent correspondent) {
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (_) => MultiBlocProvider(
          providers: [
            BlocProvider.value(value: getIt<DocumentsCubit>()),
            BlocProvider.value(value: BlocProvider.of<CorrespondentCubit>(context)),
          ],
          child: EditCorrespondentPage(correspondent: correspondent),
        ),
      ),
    );
  }

  void _openEditDocumentTypePage(DocumentType docType) {
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (_) => MultiBlocProvider(
          providers: [
            BlocProvider.value(value: getIt<DocumentsCubit>()),
            BlocProvider.value(value: BlocProvider.of<DocumentTypeCubit>(context)),
          ],
          child: EditDocumentTypePage(documentType: docType),
        ),
      ),
    );
  }

  void _openEditTagPage(Tag tag) {
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (_) => MultiBlocProvider(
          providers: [
            BlocProvider.value(value: getIt<DocumentsCubit>()),
            BlocProvider.value(value: BlocProvider.of<TagCubit>(context)),
          ],
          child: EditTagPage(tag: tag),
        ),
      ),
    );
  }

  void _openEditStoragePathPage(StoragePath path) {
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (_) => MultiBlocProvider(
          providers: [
            BlocProvider.value(value: getIt<DocumentsCubit>()),
            BlocProvider.value(value: BlocProvider.of<StoragePathCubit>(context)),
          ],
          child: EditStoragePathPage(storagePath: path),
        ),
      ),
    );
  }

  void _onAddPressed() {
    Navigator.push(context, MaterialPageRoute(
      builder: (context) {
        late final Widget page;
        switch (_currentIndex) {
          case 0:
            page = const AddCorrespondentPage();
            break;
          case 1:
            page = const AddDocumentTypePage();
            break;
          case 2:
            page = const AddTagPage();
            break;
          case 3:
            page = const AddStoragePathPage();
        }
        return LabelBlocProvider(child: page);
      },
    ));
  }
}