import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:test_sa/extensions/context_extension.dart';
import 'package:test_sa/extensions/int_extensions.dart';
import 'package:test_sa/extensions/string_extensions.dart';
import 'package:test_sa/extensions/text_extensions.dart';
import 'package:test_sa/extensions/widget_extensions.dart';
import 'package:test_sa/modules/alerts/alerts_list_page.dart';
import 'package:test_sa/modules/asset_tracking/asset_tracking_provider.dart';
import 'package:test_sa/modules/asset_tracking/asset_tracking_search_screen.dart';
import 'package:test_sa/modules/asset_tracking/models/asset_tracking_search_model.dart';
import 'package:test_sa/new_views/app_style/app_color.dart';
import 'package:test_sa/new_views/common_widgets/default_app_bar.dart';
import 'package:test_sa/views/widgets/loaders/app_loading.dart';
import 'package:test_sa/views/widgets/loaders/no_data_found.dart';
import 'asset_tracking_item_view.dart';
import 'map_tracking_page.dart';

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

  @override
  _AssetTrackingPageState createState() {
    return _AssetTrackingPageState();
  }
}

class _AssetTrackingPageState extends State<AssetTrackingPage> with SingleTickerProviderStateMixin {
  int selectedIndex = 1;
  late AnimationController _animationController;
  late AssetTrackingProvider assetTrackingProvider;
  AssetTrackingSearchModel? _searchModel;

  @override
  void initState() {
    super.initState();
    assetTrackingProvider = Provider.of<AssetTrackingProvider>(context, listen: false);
    _animationController = AnimationController(
      duration: const Duration(milliseconds: 1200),
      vsync: this,
    );
    _animationController.forward();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      assetTrackingProvider.reset();
      getAssetsFromPenguin();
    });
  }

  Future<void> getAssetsFromPenguin({bool loadMore = false, AssetTrackingSearchModel? searchModel}) async {
    await assetTrackingProvider.getAssetsFromPenguin(loadMore: loadMore, searchModel: searchModel ?? _searchModel);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: DefaultAppBar(
        title: "Live Asset Tracking",
        actions: [
          if (selectedIndex != 3)
            IconButton(
              icon: Icon(Icons.search, color: AppColor.icon2Color(context)),
              padding: EdgeInsets.zero,
              iconSize: 20,
              visualDensity: VisualDensity.compact,
              tooltip: "Search",
              onPressed: () async {
                final result = await Navigator.push<AssetTrackingSearchModel>(
                  context,
                  CupertinoPageRoute(
                    fullscreenDialog: true,
                    builder: (context) => AssetTrackingSearchScreen(
                      searchModel: _searchModel,
                    ),
                  ),
                );

                if (result != null) {
                  assetTrackingProvider.reset();
                  setState(() {
                    _searchModel = result;
                  });
                  await assetTrackingProvider.getAssetsFromPenguin(
                    searchModel: result,
                  );
                }
              },
            ),
        ],
      ),
      body: Column(
        // crossAxisAlignment: CrossAxisAlignment.center,
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          if (_filterIsNotEmpty()) _buildActiveFiltersChips(),
          SizedBox(
            width: double.infinity,
            child: SegmentedButton<int>(
              multiSelectionEnabled: false,
              emptySelectionAllowed: false,
              expandedInsets: const EdgeInsets.only(left: 16, top: 8, right: 16, bottom: 8),
              style: SegmentedButton.styleFrom(
                side: BorderSide(color: AppColor.borderColor(context)),
                textStyle: AppTextStyles.bodyText,
                backgroundColor: AppColor.background(context),
                foregroundColor: context.isDark ? AppColor.neutral30 : AppColor.black20,
                selectedForegroundColor: AppColor.addItemButtonColor(context),
                selectedBackgroundColor: AppColor.primary10,
              ),
              segments: <ButtonSegment<int>>[
                ButtonSegment<int>(
                  value: 1,
                  label: const Text("List"),
                  icon: Icon(Icons.list_rounded, color: AppColor.icon2Color(context)),
                ),
                ButtonSegment<int>(
                  value: 2,
                  label: const Text("Grid"),
                  icon: Icon(Icons.grid_view_rounded, color: AppColor.icon2Color(context)),
                ),
                ButtonSegment<int>(
                  value: 3,
                  label: const Text("Map"),
                  icon: Icon(Icons.map, color: AppColor.icon2Color(context)),
                ),
                ButtonSegment<int>(
                  value: 4,
                  label: const Text("Alerts"),
                  icon: Icon(Icons.warning_amber_rounded, color: AppColor.icon2Color(context)),
                ),
              ],
              selected: <int>{selectedIndex},
              onSelectionChanged: (Set<int> newSelection) {
                setState(() {
                  selectedIndex = newSelection.first;
                });
              },
            ),
          ),
          SafeArea(
            child: AnimatedSwitcher(
                duration: const Duration(milliseconds: 300),
                child: selectedIndex == 1
                    ? assetsListView()
                    : selectedIndex == 2
                        ? assetsGridView()
                        : selectedIndex == 3
                            ? MapTrackingPage()
                            : AlertsListPage()

                // selectedIndex == 3 ? MapTrackingPage() : assetsListView(),
                ),
          ).expanded,
        ],
      ),
    );
  }

  Widget assetsListView() {
    return Consumer<AssetTrackingProvider>(builder: (context, provider, _) {
      return (provider.assetsList.isEmpty && !provider.isLoading)
          ? NoDataFound(message: context.translation.noDataFound).center
          : NotificationListener<ScrollNotification>(
              onNotification: (scrollInfo) {
                if (!provider.isNextPageLoading && provider.nextPage && scrollInfo.metrics.pixels == scrollInfo.metrics.maxScrollExtent) {
                  getAssetsFromPenguin(loadMore: true);
                }
                return false;
              },
              child: ListView.separated(
                key: const ValueKey('asset-list_view'),
                padding: const EdgeInsets.all(16),
                itemCount: provider.isLoading ? 6 : provider.assetsList.length + (provider.isNextPageLoading ? 1 : 0),
                separatorBuilder: (listContext, itemIndex) => 12.height,
                itemBuilder: (listContext, itemIndex) {
                  if (provider.isLoading) return const SizedBox().toAssetListShimmer(listContext, provider.isLoading);
                  if (itemIndex >= provider.assetsList.length) {
                    return const Padding(
                      padding: EdgeInsets.symmetric(vertical: 16),
                      child: ALoading(),
                    );
                  }
                  final delay = itemIndex * 0.08;
                  final animation = Tween<double>(begin: 0.0, end: 1.0).animate(
                    CurvedAnimation(
                      parent: _animationController,
                      curve: Interval(
                        delay.clamp(0.0, 0.7),
                        (delay + 0.4).clamp(0.0, 1.0),
                        curve: Curves.easeOut,
                      ),
                    ),
                  );

                  final slideAnimation = Tween<Offset>(
                    begin: const Offset(0.0, 0.15),
                    end: Offset.zero,
                  ).animate(
                    CurvedAnimation(
                      parent: _animationController,
                      curve: Interval(
                        delay.clamp(0.0, 0.7),
                        (delay + 0.4).clamp(0.0, 1.0),
                        curve: Curves.easeOutCubic,
                      ),
                    ),
                  );

                  return FadeTransition(
                    opacity: animation,
                    child: SlideTransition(position: slideAnimation, child: AssetTrackingListItemView(provider.assetsList[itemIndex], false)).onPress(() {
                      Navigator.push(context, MaterialPageRoute(builder: (context) => MapTrackingPage(assetTrackingData: provider.assetsList[itemIndex])));
                    }),
                  );
                },
              ),
            );
    });
  }

  Widget assetsGridView() {
    return Consumer<AssetTrackingProvider>(builder: (context, provider, _) {
      return (provider.assetsList.isEmpty && !provider.isLoading)
          ? NoDataFound(message: context.translation.noDataFound).center
          : NotificationListener<ScrollNotification>(
              onNotification: (scrollInfo) {
                if (!provider.isLoading && !provider.isNextPageLoading && provider.nextPage && scrollInfo.metrics.pixels >= (scrollInfo.metrics.maxScrollExtent - 200)) {
                  getAssetsFromPenguin(loadMore: true);
                }
                return false;
              },
              child: Column(
                children: [
                  Expanded(
                    child: GridView.builder(
                      key: const ValueKey('asset-grid_view'),
                      padding: const EdgeInsets.all(16),
                      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                        crossAxisCount: 2,
                        childAspectRatio: 0.9, // need to fix this it's not flexiable with content..
                        crossAxisSpacing: 12,
                        mainAxisSpacing: 12,
                      ),
                      itemCount: provider.isLoading ? 6 : provider.assetsList.length,
                      itemBuilder: (listContext, itemIndex) {
                        if (provider.isLoading) return const SizedBox().toAssetListShimmer(listContext, provider.isLoading);
                        final delay = itemIndex * 0.08;
                        final animation = Tween<double>(begin: 0.0, end: 1.0).animate(
                          CurvedAnimation(
                            parent: _animationController,
                            curve: Interval(
                              delay.clamp(0.0, 0.7),
                              (delay + 0.4).clamp(0.0, 1.0),
                              curve: Curves.easeOut,
                            ),
                          ),
                        );

                        final slideAnimation = Tween<Offset>(
                          begin: const Offset(0.0, 0.15),
                          end: Offset.zero,
                        ).animate(
                          CurvedAnimation(
                            parent: _animationController,
                            curve: Interval(
                              delay.clamp(0.0, 0.7),
                              (delay + 0.4).clamp(0.0, 1.0),
                              curve: Curves.easeOutCubic,
                            ),
                          ),
                        );

                        return FadeTransition(
                          opacity: animation,
                          child: SlideTransition(position: slideAnimation, child: AssetTrackingListItemView(provider.assetsList[itemIndex], true)).onPress(() {
                            Navigator.push(context, MaterialPageRoute(builder: (context) => MapTrackingPage(assetTrackingData: provider.assetsList[itemIndex])));
                          }),
                        );
                      },
                    ),
                  ),
                  if (provider.isNextPageLoading)
                    const Padding(
                      padding: EdgeInsets.symmetric(vertical: 16),
                      child: ALoading(),
                    ),
                ],
              ),
            );
    });
  }

  Widget _buildActiveFiltersChips() {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
      decoration: BoxDecoration(
        color: AppColor.background(context),
        border: Border(
          bottom: BorderSide(color: AppColor.borderColor(context), width: 1),
        ),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        spacing: 4,
        children: [
          Text(
            'Active Filters',
            style: AppTextStyles.tinyFont2.copyWith(color: AppColor.labelTextStyleColor(context), fontWeight: FontWeight.w600),
          ),
          Row(
            mainAxisSize: MainAxisSize.min,
            mainAxisAlignment: MainAxisAlignment.center,
            spacing: 16,
            children: [
              SizedBox(
                height: 40.toScreenHeight,
                child: ListView.separated(
                  scrollDirection: Axis.horizontal,
                  padding: EdgeInsets.zero,
                  itemBuilder: (cxt, index) => _getActiveFilterChips()[index],
                  separatorBuilder: (cxt, index) => 8.width,
                  itemCount: _getActiveFilterChips().length,
                ),
              ).expanded,
              TextButton(
                onPressed: () {
                  setState(() {
                    _searchModel = AssetTrackingSearchModel();
                    getAssetsFromPenguin();
                  });
                },
                style: TextButton.styleFrom(
                  padding: EdgeInsets.zero,
                  tapTargetSize: MaterialTapTargetSize.shrinkWrap,
                ),
                child: Text(
                  'Clear Filters',
                  style: AppTextStyles.tinyFont.copyWith(color: AppColor.red30),
                ),
              ),
            ],
          )
        ],
      ),
    );
  }

  Widget _buildFilterChip({required String label, required VoidCallback onDelete}) {
    return Theme(
      data: Theme.of(context).copyWith(splashColor: Colors.transparent, highlightColor: Colors.transparent),
      child: Chip(
        backgroundColor: AppColor.backgroundTabBarColor(context),
        side: BorderSide(color: AppColor.border2Color(context)),
        visualDensity: VisualDensity.compact,
        label: Text(label),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(30.0),
        ),
        labelStyle: AppTextStyles.tinyFont2.copyWith(
          color: AppColor.labelTextStyleColor(context),
        ),
        deleteIconColor: AppColor.icon2Color(context),
        materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
        onDeleted: onDelete,
      ),
    );
  }

  List<Widget> _getActiveFilterChips() {
    final chips = <Widget>[];

    // Search
    if (_searchModel?.search?.isNotEmpty ?? false) {
      chips.add(
        _buildFilterChip(
          label: 'Search: ${_searchModel?.search}',
          onDelete: () {
            setState(() {
              _searchModel?.search = null;
              getAssetsFromPenguin(searchModel: _searchModel);
            });
          },
        ),
      );
    }
    if (_searchModel?.types?.isNotEmpty ?? false) {
      for (final type in _searchModel?.types ?? []) {
        chips.add(
          _buildFilterChip(
            label: 'Type: ${type.name}',
            onDelete: () {
              setState(() {
                _searchModel?.types!.remove(type);
                getAssetsFromPenguin(searchModel: _searchModel);
              });
            },
          ),
        );
      }
    }
    if (_searchModel?.status?.isNotEmpty ?? false) {
      for (final status in _searchModel?.status ?? []) {
        chips.add(
          _buildFilterChip(
            label: 'Status: ${status.name}',
            onDelete: () {
              setState(() {
                _searchModel?.status!.remove(status);
                getAssetsFromPenguin(searchModel: _searchModel);
              });
            },
          ),
        );
      }
    }

    if (_searchModel?.departments?.isNotEmpty ?? false) {
      for (final department in _searchModel?.departments ?? []) {
        chips.add(
          _buildFilterChip(
            label: 'Department: ${department.name}',
            onDelete: () {
              setState(() {
                _searchModel?.departments?.remove(department);
                getAssetsFromPenguin(searchModel: _searchModel);
              });
            },
          ),
        );
      }
    }

    // Start Date
    if (_searchModel?.startDate?.isNotEmpty ?? false) {
      chips.add(
        _buildFilterChip(
          label: 'From: ${_searchModel?.startDate?.toAssetDetailsFormat}',
          onDelete: () {
            setState(() {
              _searchModel?.startDate = null;
              getAssetsFromPenguin(searchModel: _searchModel);
            });
          },
        ),
      );
    }

    // End Date
    if (_searchModel?.endDate?.isNotEmpty ?? false) {
      chips.add(
        _buildFilterChip(
          label: 'To: ${_searchModel?.endDate?.toAssetDetailsFormat}',
          onDelete: () {
            setState(() {
              _searchModel?.endDate = null;
              getAssetsFromPenguin(searchModel: _searchModel);
            });
          },
        ),
      );
    }

    return chips;
  }

  bool _filterIsNotEmpty() {
    return (_searchModel?.search?.isNotEmpty ?? false) ||
        (_searchModel?.types != null && _searchModel!.types!.isNotEmpty) ||
        (_searchModel?.status != null && _searchModel!.status!.isNotEmpty) ||
        (_searchModel?.departments != null && _searchModel!.departments!.isNotEmpty) ||
        (_searchModel?.startDate != null && _searchModel!.startDate!.isNotEmpty) ||
        (_searchModel?.endDate != null && _searchModel!.endDate!.isNotEmpty);
  }
}