// ignore_for_file: deprecated_member_use_from_same_package

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';
import 'package:hoshan/core/gen/assets.gen.dart';
import 'package:hoshan/core/routes/route_generator.dart';
import 'package:hoshan/data/model/ai/bots_model.dart';
import 'package:hoshan/data/model/empty_states_enum.dart';
import 'package:hoshan/data/model/tools_categories_model.dart';
import 'package:hoshan/ui/screens/main/assistant/bloc/global_assistants_bloc.dart';
import 'package:hoshan/ui/screens/main/forum/cubit/category_cubit.dart';
import 'package:hoshan/ui/theme/colors.dart';
import 'package:hoshan/ui/theme/cubit/theme_mode_cubit.dart';
import 'package:hoshan/ui/theme/responsive.dart';
import 'package:hoshan/ui/theme/text.dart';
import 'package:hoshan/ui/widgets/components/bot/bot_grid_card.dart';
import 'package:hoshan/ui/widgets/components/bot/bot_grid_card_placeholder.dart';
import 'package:hoshan/ui/widgets/sections/empty/empty_states.dart';
import 'package:hoshan/ui/widgets/sections/loading/default_placeholder.dart';

class GlobalAssistantsScreen extends StatefulWidget {
  const GlobalAssistantsScreen({super.key});

  @override
  State<GlobalAssistantsScreen> createState() => _GlobalAssistantsScreenState();
}

ValueNotifier<Categories> initiaGlobalCatItem =
    ValueNotifier(Categories(id: -1, name: 'برگزیده‌ها'));

class _GlobalAssistantsScreenState extends State<GlobalAssistantsScreen> {
  void onSelect(BuildContext contxet, Bots bot) {
    context.go(Routes.assistant, extra: bot.id);
  }

  void onMark(bool marked, Bots bot, int index) {
    final newBot = bot;
    // if (initialItem.value.id == -2) {
    //   context.read<GlobalAssistantsBloc>().add(RemoveGlobalAssistantBot(
    //         oldAssistantsIndex: index,
    //         oldBot: newBot,
    //       ));
    //   return;
    // }
    newBot.marked = marked;
    context.read<GlobalAssistantsBloc>().add(ChangeGlobalAssistantBot(
        oldAssistantsIndex: index, oldBot: bot, newBot: newBot));
  }

  final ScrollController scrollController = ScrollController();

  @override
  Widget build(BuildContext context) {
    return RefreshIndicator(
      backgroundColor: Theme.of(context).colorScheme.surface,
      color: Theme.of(context).colorScheme.primary,
      onRefresh: () async {
        context
            .read<GlobalAssistantsBloc>()
            .add(GetGlobalAssistants(category: initiaGlobalCatItem.value.id));
        scrollController.jumpTo(0);
      },
      child: Column(
        children: [
          BlocBuilder<CategoryCubit, CategoryState>(
            builder: (context, state) {
              if (state is CategoryLoading) {
                return SizedBox(
                  height: 36,
                  child: ListView.builder(
                    padding:
                        const EdgeInsetsDirectional.symmetric(horizontal: 16),
                    itemCount: 10,
                    physics: const NeverScrollableScrollPhysics(),
                    scrollDirection: Axis.horizontal,
                    itemBuilder: (context, index) {
                      return categoryPlaceholder();
                    },
                  ),
                );
              }
              if (state is CategorySuccess) {
                final categories = [
                  Categories(id: -1, name: 'برگزیده‌ها'),
                  Categories(id: -2, name: 'علاقه‌مندی‌ها'),
                  ...state.categories
                ];
                return Padding(
                  padding: const EdgeInsets.symmetric(vertical: 12),
                  child: Directionality(
                    textDirection: TextDirection.rtl,
                    child: SizedBox(
                        height: 36,
                        width: MediaQuery.sizeOf(context).width,
                        child: ListView.builder(
                          padding: const EdgeInsetsDirectional.symmetric(
                              horizontal: 16),
                          scrollDirection: Axis.horizontal,
                          physics: const BouncingScrollPhysics(),
                          itemCount: categories.length,
                          itemBuilder: (context, index) {
                            final cat = categories[index];
                            return GestureDetector(
                                onTap: () {
                                  if (context.read<GlobalAssistantsBloc>().state
                                      is GlobalAssistantsLoading) {
                                    return;
                                  }
                                  if (initiaGlobalCatItem.value.id == cat.id) {
                                    return;
                                  }
                                  context.read<GlobalAssistantsBloc>().add(
                                      GetGlobalAssistants(category: cat.id));
                                  initiaGlobalCatItem.value = cat;
                                },
                                child: categoryContainer(cat));
                          },
                        )),
                  ),
                );
              }
              return const SizedBox.shrink();
            },
          ),
          Expanded(
            child: BlocBuilder<GlobalAssistantsBloc, GlobalAssistantsState>(
              builder: (context, state) {
                if (state is GlobalAssistantsFail) {
                  return EmptyStates.getEmptyState(
                      status: EmptyStatesEnum.server, scale: 0.8);
                }
                if (state is GlobalAssistantsSuccess) {
                  final assistants = state.assistants;
                  if (assistants.isEmpty) {
                    if (initiaGlobalCatItem.value.id == -2) {
                      return Center(
                          child: Column(
                        children: [
                          const SizedBox(
                            height: 32,
                          ),
                          Assets.icon.gif.emptyBookmarks.image(),
                          Padding(
                            padding:
                                const EdgeInsets.symmetric(horizontal: 16.0),
                            child: Text(
                              'اینجا دستیارهای نشان‌دار شده شما نمایش داده می‌شوند. هنوز موردی اضافه نکرده‌اید. برای دسترسی سریع‌تر، دستیارهای دلخواهتان را بوکمارک کنید!',
                              style: AppTextStyles.body4.copyWith(
                                  color:
                                      Theme.of(context).colorScheme.onSurface),
                              textDirection: TextDirection.rtl,
                              textAlign: TextAlign.center,
                            ),
                          )
                        ],
                      ));
                    }

                    return EmptyStates.getEmptyState(
                      status: EmptyStatesEnum.assistant,
                      title: 'دستیاری وجود ندارد',
                      height: MediaQuery.sizeOf(context).height * 0.4,
                    );
                  }
                  return Directionality(
                    textDirection: TextDirection.rtl,
                    child: ListView.builder(
                      itemCount: assistants.length,
                      shrinkWrap: true,
                      padding: EdgeInsets.only(bottom: 90),
                      physics: const BouncingScrollPhysics(),
                      itemBuilder: (context, index) {
                        final assistant = assistants[index];
                        return state.category == null ||
                                state.category == -1 ||
                                state.category == -2
                            ? Column(
                                crossAxisAlignment: CrossAxisAlignment.start,
                                children: [
                                  Builder(builder: (context) {
                                    return ListTile(
                                      title: Text(
                                        assistant.categoryName ?? '',
                                        style: AppTextStyles.body4.copyWith(
                                            color: Theme.of(context)
                                                .colorScheme
                                                .onSurface),
                                      ),
                                    );
                                  }),
                                  rowsList(assistant.bots!)
                                ],
                              )
                            : gridsList(assistant.bots!);
                      },
                    ),
                  );
                }
                return Directionality(
                  textDirection: TextDirection.rtl,
                  child: ListView.builder(
                    itemCount: 10,
                    shrinkWrap: true,
                    physics: const NeverScrollableScrollPhysics(),
                    itemBuilder: (context, index) {
                      return Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Padding(
                            padding: const EdgeInsets.symmetric(
                                horizontal: 16, vertical: 8),
                            child: DefaultPlaceHolder(
                              child: Container(
                                decoration: BoxDecoration(
                                    color: Colors.white,
                                    borderRadius: BorderRadius.circular(16)),
                                child: Text(
                                  'عمومی',
                                  style: AppTextStyles.body4
                                      .copyWith(color: AppColors.black[900]),
                                ),
                              ),
                            ),
                          ),
                          rowsListPlaceHolder()
                        ],
                      );
                    },
                  ),
                );
              },
            ),
          ),
        ],
      ),
    );
  }

  Widget gridsList(List<Bots> bots) {
    return GridView.builder(
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: Responsive(context).isMobile()
              ? 2
              : Responsive(context).isTablet()
                  ? 3
                  : 5,
          crossAxisSpacing: 16,
          mainAxisSpacing: 16,
          mainAxisExtent: 150),
      itemCount: bots.length,
      physics: const NeverScrollableScrollPhysics(),
      shrinkWrap: true,
      itemBuilder: (context, index) {
        return GestureDetector(
          onTap: () => onSelect(context, bots[index]),
          child: BotGridCard(
            onMark: (marked) => onMark(marked, bots[index], index),
            bot: bots[index],
          ),
        );
      },
    );
  }

  Widget rowsList(List<Bots> bots) {
    return SizedBox(
      height: 170,
      child: ListView.builder(
        shrinkWrap: true,
        scrollDirection: Axis.horizontal,
        physics: const BouncingScrollPhysics(),
        padding: const EdgeInsets.symmetric(horizontal: 8),
        itemCount: bots.length,
        itemBuilder: (context, index) {
          return SizedBox(
              width: 180,
              child: Padding(
                padding:
                    const EdgeInsets.symmetric(horizontal: 8.0, vertical: 8),
                child: GestureDetector(
                  onTap: () => onSelect(context, bots[index]),
                  child: BotGridCard(
                    onMark: (marked) => onMark(marked, bots[index], index),
                    bot: bots[index],
                  ),
                ),
              ));
        },
      ),
    );
  }

  Widget rowsListPlaceHolder() {
    return SizedBox(
      height: 170,
      child: ListView.builder(
        shrinkWrap: true,
        scrollDirection: Axis.horizontal,
        physics: const NeverScrollableScrollPhysics(),
        padding: const EdgeInsets.symmetric(horizontal: 16),
        itemCount: 10,
        itemBuilder: (context, index) {
          return SizedBox(
              width: 180,
              child: Padding(
                padding:
                    const EdgeInsets.symmetric(horizontal: 8.0, vertical: 8),
                child: BotGridCardPlaceholder(
                  index: index,
                ),
              ));
        },
      ),
    );
  }

  Widget categoryContainer(Categories cat) {
    return ValueListenableBuilder(
        valueListenable: initiaGlobalCatItem,
        builder: (context, item, child) {
          final active = item.id == cat.id;
          return Container(
            padding: const EdgeInsets.all(0),
            margin: const EdgeInsets.symmetric(horizontal: 4),
            constraints: const BoxConstraints(minWidth: 100),
            alignment: Alignment.center,
            decoration: BoxDecoration(
                color: active
                    ? AppColors.primaryColor[
                        context.read<ThemeModeCubit>().isDark() ? 500 : 50]
                    : AppColors.gray[
                        context.read<ThemeModeCubit>().isDark() ? 900 : 400],
                borderRadius: BorderRadius.circular(360)),
            child: Text(
              cat.name ?? '',
              style: AppTextStyles.body4.copyWith(
                  color: context.read<ThemeModeCubit>().isDark()
                      ? Colors.white
                      : active
                          ? AppColors.primaryColor.defaultShade
                          : AppColors.black[300]),
            ),
          );
        });
  }

  Widget categoryPlaceholder() {
    return DefaultPlaceHolder(
      child: Container(
        padding: const EdgeInsets.all(8),
        margin: const EdgeInsets.symmetric(horizontal: 4),
        constraints: const BoxConstraints(minWidth: 100),
        alignment: Alignment.center,
        decoration: BoxDecoration(
            color: Colors.white, borderRadius: BorderRadius.circular(360)),
        child: Text(
          'for placeholder',
          style: AppTextStyles.body4,
        ),
      ),
    );
  }
}