import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_svg/svg.dart';
import 'package:syncrow_web/common/widgets/search_bar.dart';
import 'package:syncrow_web/pages/spaces_management/all_spaces/bloc/space_management_bloc.dart';
import 'package:syncrow_web/pages/spaces_management/all_spaces/bloc/space_management_event.dart';
import 'package:syncrow_web/pages/spaces_management/all_spaces/model/community_model.dart';
import 'package:syncrow_web/pages/spaces_management/all_spaces/model/space_model.dart';
import 'package:syncrow_web/pages/spaces_management/all_spaces/widgets/community_tile.dart';
import 'package:syncrow_web/pages/spaces_management/all_spaces/widgets/space_tile_widget.dart';
import 'package:syncrow_web/pages/spaces_management/structure_selector/bloc/center_body_bloc.dart';
import 'package:syncrow_web/pages/spaces_management/structure_selector/bloc/center_body_event.dart';
import 'package:syncrow_web/utils/color_manager.dart';
import 'package:syncrow_web/utils/constants/assets.dart';
import 'package:syncrow_web/utils/extension/build_context_x.dart';
import 'package:syncrow_web/utils/style.dart';

class SidebarWidget extends StatefulWidget {
  final List<CommunityModel> communities;
  final String? selectedSpaceUuid;

  const SidebarWidget({
    super.key,
    required this.communities,
    this.selectedSpaceUuid,
  });

  @override
  State<SidebarWidget> createState() => _SidebarWidgetState();
}

class _SidebarWidgetState extends State<SidebarWidget> {
  String _searchQuery = '';
  String? _selectedSpaceUuid;
  String? _selectedId;

  @override
  void initState() {
    super.initState();
    _selectedId = widget.selectedSpaceUuid;
  }

  @override
  void didUpdateWidget(covariant SidebarWidget oldWidget) {
    super.didUpdateWidget(oldWidget);
    if (widget.selectedSpaceUuid != oldWidget.selectedSpaceUuid) {
      setState(() {
        _selectedId = widget.selectedSpaceUuid;
      });
    }
  }

  List<CommunityModel> _filterCommunities() {
    if (_searchQuery.isEmpty) {
      _selectedSpaceUuid = null;
      return widget.communities;
    }

    return widget.communities.where((community) {
      final containsQueryInCommunity =
          community.name.toLowerCase().contains(_searchQuery.toLowerCase());
      final containsQueryInSpaces = community.spaces
          .any((space) => _containsQuery(space, _searchQuery.toLowerCase()));

      return containsQueryInCommunity || containsQueryInSpaces;
    }).toList();
  }

  bool _containsQuery(SpaceModel space, String query) {
    final matchesSpace = space.name.toLowerCase().contains(query);
    final matchesChildren = space.children.any(
      (child) => _containsQuery(child, query),
    );

    if (matchesSpace || matchesChildren) {
      _selectedSpaceUuid = space.uuid;
    }

    return matchesSpace || matchesChildren;
  }

  bool _isSpaceOrChildSelected(SpaceModel space) {
    if (_selectedSpaceUuid == space.uuid) {
      return true;
    }

    for (var child in space.children) {
      if (_isSpaceOrChildSelected(child)) {
        return true;
      }
    }

    return false;
  }

  @override
  Widget build(BuildContext context) {
    final filteredCommunities = _filterCommunities();

    return Container(
      width: 300,
      decoration: subSectionContainerDecoration,
      child: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            decoration: subSectionContainerDecoration,
            padding: const EdgeInsets.all(16.0),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Text(
                  'Communities',
                  style: context.textTheme.titleMedium?.copyWith(
                        color: ColorsManager.blackColor,
                      ),
                ),
                GestureDetector(
                  onTap: () => _navigateToBlank(context),
                  child: Container(
                    width: 30,
                    height: 30,
                    decoration: const BoxDecoration(
                      color: ColorsManager.whiteColors,
                      shape: BoxShape.circle,
                    ),
                    child: Center(
                      child: SvgPicture.asset(
                        Assets.roundedAddIcon,
                        width: 24,
                        height: 24,
                      ),
                    ),
                  ),
                ),
              ],
            ),
          ),
          CustomSearchBar(
            onSearchChanged: (query) => setState(() => _searchQuery = query),
          ),
          const SizedBox(height: 16),
          Expanded(
            child: ListView(
              children: filteredCommunities
                  .map((community) => _buildCommunityTile(context, community))
                  .toList(),
            ),
          ),
        ],
      ),
    );
  }

  void _navigateToBlank(BuildContext context) {
    setState(() => _selectedId = '');
    context.read<SpaceManagementBloc>().add(
          NewCommunityEvent(communities: widget.communities),
        );
  }

  Widget _buildCommunityTile(BuildContext context, CommunityModel community) {
    bool hasChildren = community.spaces.isNotEmpty;

    return CommunityTile(
      title: community.name,
      key: ValueKey(community.uuid),
      isSelected: _selectedId == community.uuid,
      isExpanded: false,
      onItemSelected: () {
        setState(() {
          _selectedId = community.uuid;
          _selectedSpaceUuid = null;
        });

        context.read<CenterBodyBloc>().add(CommunitySelectedEvent());

        context.read<SpaceManagementBloc>().add(
              SelectCommunityEvent(selectedCommunity: community),
            );
      },
      onExpansionChanged: (title, expanded) {},
      children: hasChildren
          ? community.spaces
              .where((space) => (space.status != SpaceStatus.deleted ||
                  space.status != SpaceStatus.parentDeleted))
              .map((space) => _buildSpaceTile(space, community))
              .toList()
          : null,
    );
  }

  Widget _buildSpaceTile(SpaceModel space, CommunityModel community,
      {int depth = 1}) {
    bool spaceIsExpanded = _isSpaceOrChildSelected(space);
    return Padding(
      padding: EdgeInsets.only(left: depth * 16.0),
      child: SpaceTile(
        title: space.name,
        key: ValueKey(space.uuid),
        isSelected: _selectedId == space.uuid,
        initiallyExpanded: spaceIsExpanded,
        onExpansionChanged: (expanded) {},
        onItemSelected: () {
          setState(() {
            _selectedId = space.uuid;
            _selectedSpaceUuid = space.uuid;
          });

          context.read<SpaceManagementBloc>().add(
                SelectSpaceEvent(selectedCommunity: community, selectedSpace: space),
              );
        },
        children: space.children.isNotEmpty
            ? space.children
                .map((childSpace) => _buildSpaceTile(childSpace, community))
                .toList()
            : [],
      ),
    );
  }
}