import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:syncrow_web/pages/access_management/bloc/access_event.dart';
import 'package:syncrow_web/pages/access_management/bloc/access_state.dart';
import 'package:syncrow_web/pages/access_management/model/password_model.dart';
import 'package:syncrow_web/services/access_mang_api.dart';
import 'package:syncrow_web/utils/color_manager.dart';
import 'package:syncrow_web/utils/snack_bar.dart';

class AccessBloc extends Bloc<AccessEvent, AccessState> {
  AccessBloc() : super((AccessInitial())) {
    on<FetchTableData>(_onFetchTableData);
    on<TabChangedEvent>(selectFilterTap);
    on<SelectTime>(selectTime);
    on<FilterDataEvent>(_filterData);
    on<ResetSearch>(resetSearch);
  }
  String startTime = 'Start Time';
  String endTime = 'End Time';

  int? effectiveTimeTimeStamp;
  int? expirationTimeTimeStamp;
  TextEditingController passwordName= TextEditingController();
  List<PasswordModel> filteredData = []; // To store filtered data
  List<PasswordModel> data=[];

  Future<void> _onFetchTableData(
      FetchTableData event, Emitter<AccessState> emit) async {
    try {
      emit(AccessLoaded());
      data =  await AccessMangApi().fetchVisitorPassword();
       emit(TableLoaded(data));
    } catch (e) {
      emit(FailedState(e.toString()));
    }
  }

  int selectedIndex = 0;

  final List<String> tabs = [
    'All',
    'To Be Effective (0)',
    'Effective (0)',
    'Expired'
  ];


  Future selectFilterTap(TabChangedEvent event, Emitter<AccessState> emit) async {
    try {
      emit(AccessLoaded());
      selectedIndex= event.selectedIndex;
       emit(AccessInitial());
      emit(TableLoaded(data));

    } catch (e) {
      emit(FailedState( e.toString()));
      return;
    }
  }


  Future<void> selectTime(SelectTime event, Emitter<AccessState> emit) async {
    final DateTime? picked = await showDatePicker(
      context: event.context,
      initialDate: DateTime.now(),
      firstDate: DateTime(2015, 8),
      lastDate: DateTime(2101),
    );
    if (picked != null) {
      final TimeOfDay? timePicked = await showTimePicker(
        context: event.context,
        initialTime: TimeOfDay.now(),

        builder: (context, child) {
          return Theme(
            data: ThemeData.light().copyWith(
              colorScheme: const ColorScheme.light(
                primary: ColorsManager.primaryColor,
                onSurface: Colors.black,
              ),
              buttonTheme: const ButtonThemeData(
                colorScheme: ColorScheme.light(
                  primary: Colors.green,
                ),
              ),
            ),
            child: child!,
          );
        },
      );
      if (timePicked != null) {
        final selectedDateTime = DateTime(
          picked.year,
          picked.month,
          picked.day,
          timePicked.hour,
          timePicked.minute,
        );
        final selectedTimestamp = DateTime(
          selectedDateTime.year,
          selectedDateTime.month,
          selectedDateTime.day,
          selectedDateTime.hour,
          selectedDateTime.minute,
        ).millisecondsSinceEpoch ~/ 1000; // Divide by 1000 to remove milliseconds
        if (event.isStart) {
          if (expirationTimeTimeStamp != null && selectedTimestamp > expirationTimeTimeStamp!) {
            CustomSnackBar.displaySnackBar('Effective Time cannot be later than Expiration Time.');
          } else {
            startTime = selectedDateTime.toString().split('.').first; // Remove seconds and milliseconds
            effectiveTimeTimeStamp = selectedTimestamp;
          }
        } else {
          if (effectiveTimeTimeStamp != null && selectedTimestamp < effectiveTimeTimeStamp!) {
            CustomSnackBar.displaySnackBar('Expiration Time cannot be earlier than Effective Time.');
          } else {
            endTime = selectedDateTime.toString().split('.').first; // Remove seconds and milliseconds
            expirationTimeTimeStamp = selectedTimestamp;
          }
        }
      }
    }
    emit(AccessInitial());
    emit(TableLoaded(data));
  }

  Future<void> _filterData(FilterDataEvent event, Emitter<AccessState> emit) async {
    emit(AccessLoaded());
    try {
      // Filter the data based on the provided criteria
      filteredData = data.where((item) {
        bool matchesCriteria = true;
        // Check if the password name should be used for filtering
        if (event.passwordName != null && event.passwordName!.isNotEmpty) {
          final bool matchesName = item.passwodName != null &&
              item.passwodName.contains(event.passwordName!);
          if (!matchesName) {
            matchesCriteria = false;
          }
        }
        // Check if the time range should be used for filtering
        if (event.startTime != null && event.endTime != null) {
          // Ensure effectiveTime and invalidTime are treated as integers
          final int? effectiveTime = int.tryParse(item.effectiveTime.toString());
          final int? invalidTime = int.tryParse(item.invalidTime.toString());
          if (effectiveTime == null || invalidTime == null) {
            matchesCriteria = false;
          } else {
            final bool matchesStartTime = effectiveTime >= event.startTime!;
            final bool matchesEndTime = invalidTime <= event.endTime!;
            if (!matchesStartTime || !matchesEndTime) {
              matchesCriteria = false;
            }
          }
        }
        return matchesCriteria;
      }).toList();
      print('Filtered data: $filteredData');  // Print to debug filtered data
      emit(TableLoaded(filteredData));
    } catch (e) {
      print('Error occurred during filtering: $e');
    }
  }
  // ResetSearch
  resetSearch(ResetSearch event, Emitter<AccessState> emit) async{
    emit(AccessLoaded());
     startTime = 'Start Time';
     endTime = 'End Time';
     passwordName.clear();
    add(FetchTableData());

  }

  String timestampToDate(dynamic timestamp) {
    DateTime dateTime = DateTime.fromMillisecondsSinceEpoch(int.parse(timestamp) * 1000);
    return "${dateTime.year}/${dateTime.month.toString().padLeft(2, '0')}/${dateTime.day.toString().padLeft(2, '0')}";
  }


}