// ignore_for_file: use_build_context_synchronously

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:animations/animations.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter_split_view/flutter_split_view.dart';
import 'package:provider/provider.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';

import 'package:adguard_home_manager/screens/clients/client/client_screen_functions.dart';
import 'package:adguard_home_manager/screens/clients/client/added_client_tile.dart';
import 'package:adguard_home_manager/screens/clients/client/remove_client_modal.dart';
import 'package:adguard_home_manager/screens/clients/fab.dart';
import 'package:adguard_home_manager/screens/clients/options_modal.dart';
import 'package:adguard_home_manager/widgets/tab_content_list.dart';

import 'package:adguard_home_manager/functions/snackbar.dart';
import 'package:adguard_home_manager/providers/status_provider.dart';
import 'package:adguard_home_manager/providers/clients_provider.dart';
import 'package:adguard_home_manager/constants/enums.dart';
import 'package:adguard_home_manager/classes/process_modal.dart';
import 'package:adguard_home_manager/models/clients.dart';
import 'package:adguard_home_manager/providers/app_config_provider.dart';

class AddedList extends StatefulWidget {
  final ScrollController scrollController;
  final List<Client> data;
  final void Function(Client) onClientSelected;
  final Client? selectedClient;
  final bool splitView;

  const AddedList({
    Key? key,
    required this.scrollController,
    required this.data,
    required this.onClientSelected,
    this.selectedClient,
    required this.splitView
  }) : super(key: key);

  @override
  State<AddedList> createState() => _AddedListState();
}

class _AddedListState extends State<AddedList> {
  late bool isVisible;

  @override
  initState(){
    super.initState();

    isVisible = true;
    widget.scrollController.addListener(() {
      if (widget.scrollController.position.userScrollDirection == ScrollDirection.reverse) {
        if (mounted && isVisible == true) {
          setState(() => isVisible = false);
        }
      } 
      else {
        if (widget.scrollController.position.userScrollDirection == ScrollDirection.forward) {
          if (mounted && isVisible == false) {
            setState(() => isVisible = true);
          }
        }
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    final statusProvider = Provider.of<StatusProvider>(context);
    final clientsProvider = Provider.of<ClientsProvider>(context);
    final appConfigProvider = Provider.of<AppConfigProvider>(context);

    final width = MediaQuery.of(context).size.width;

    void confirmEditClient(Client client) async {
      ProcessModal processModal = ProcessModal(context: context);
      processModal.open(AppLocalizations.of(context)!.addingClient);
      
      final result = await clientsProvider.editClient(client);

      processModal.close();

      if (result == true) {
        showSnacbkar(
          appConfigProvider: appConfigProvider,
          label: AppLocalizations.of(context)!.clientUpdatedSuccessfully, 
          color: Colors.green
        );
      }
      else {
        showSnacbkar(
          appConfigProvider: appConfigProvider,
          label: AppLocalizations.of(context)!.clientNotUpdated, 
          color: Colors.red
        );
      }
    }

    void deleteClient(Client client) async {
      ProcessModal processModal = ProcessModal(context: context);
      processModal.open(AppLocalizations.of(context)!.removingClient);
      
      final result = await clientsProvider.deleteClient(client);
    
      processModal.close();

      if (result == true) {
        if (widget.splitView == true) {
          SplitView.of(context).popUntil(0);
        }
        showSnacbkar(
          appConfigProvider: appConfigProvider,
          label: AppLocalizations.of(context)!.clientDeletedSuccessfully, 
          color: Colors.green
        );
      }
      else {
        showSnacbkar(
          appConfigProvider: appConfigProvider,
          label: AppLocalizations.of(context)!.clientNotDeleted, 
          color: Colors.red
        );
      }
    }  

    void openClientModal(Client client) {
      openClientFormModal(
        context: context, 
        width: width, 
        onConfirm: confirmEditClient,
        onDelete: deleteClient
      );
    }

    void openDeleteModal(Client client) {
      showModal(
        context: context, 
        builder: (ctx) => RemoveClientModal(
          onConfirm: () => deleteClient(client)
        )
      );
    }

    void openOptionsModal(Client client) {
      showModal(
        context: context, 
        builder: (ctx) => OptionsModal(
          onDelete: () => openDeleteModal(client),
          onEdit: () => openClientModal(client),
        )
      );
    }

    return CustomTabContentList(
      noSliver: !(Platform.isAndroid || Platform.isIOS),
      listPadding: widget.splitView == true 
        ? const EdgeInsets.only(top: 8)
        : null,
      loadingGenerator: () => SizedBox(
        width: double.maxFinite,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            const CircularProgressIndicator(),
            const SizedBox(height: 30),
            Text(
              AppLocalizations.of(context)!.loadingStatus,
              textAlign: TextAlign.center,
              style: TextStyle(
                fontSize: 22,
                color: Theme.of(context).colorScheme.onSurfaceVariant,
              ),
            )
          ],
        ),
      ), 
      itemsCount: widget.data.length,
      contentWidget: (index) => AddedClientTile(
        selectedClient: widget.selectedClient,
        client: widget.data[index], 
        onTap: widget.onClientSelected,
        onLongPress: openOptionsModal,
        onEdit: statusProvider.serverStatus != null
          ? (c) => openClientModal(c)
          : null,
        onDelete: openDeleteModal,
        splitView: widget.splitView,
        serverVersion: statusProvider.serverStatus!.serverVersion,
      ),
      noData: SizedBox(
        width: double.maxFinite,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16),
              child: Text(
                AppLocalizations.of(context)!.noClientsList,
                textAlign: TextAlign.center,
                style: TextStyle(
                  fontSize: 24,
                  color: Theme.of(context).colorScheme.onSurfaceVariant,
                ),
              ),
            ),
            const SizedBox(height: 30),
            TextButton.icon(
              onPressed: () => clientsProvider.fetchClients(updateLoading: true),
              icon: const Icon(Icons.refresh_rounded), 
              label: Text(AppLocalizations.of(context)!.refresh),
            )
          ],
        ),
      ), 
      errorGenerator: () => SizedBox(
        width: double.maxFinite,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            const Icon(
              Icons.error,
              color: Colors.red,
              size: 50,
            ),
            const SizedBox(height: 30),
            Text(
              AppLocalizations.of(context)!.errorLoadServerStatus,
              textAlign: TextAlign.center,
              style: TextStyle(
                fontSize: 22,
                color: Theme.of(context).colorScheme.onSurfaceVariant,
              ),
            )
          ],
        ),
      ), 
      loadStatus: statusProvider.loadStatus == LoadStatus.loading || clientsProvider.loadStatus == LoadStatus.loading
        ? LoadStatus.loading
        : clientsProvider.loadStatus, 
      onRefresh: () => clientsProvider.fetchClients(updateLoading: false),
      fab: const ClientsFab(),
      fabVisible: isVisible,
    );
  }
}