import 'dart:async';

import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:flutter/material.dart';
import 'package:syncrow_web/pages/routiens/models/create_scene_and_autoamtion/create_automation_model.dart';
import 'package:syncrow_web/pages/routiens/models/create_scene_and_autoamtion/create_scene_model.dart';
import 'package:syncrow_web/pages/routiens/models/device_functions.dart';
import 'package:syncrow_web/pages/routiens/models/routine_model.dart';
import 'package:syncrow_web/services/routines_api.dart';

part 'routine_event.dart';
part 'routine_state.dart';

const spaceId = '25c96044-fadf-44bb-93c7-3c079e527ce6';

class RoutineBloc extends Bloc<RoutineEvent, RoutineState> {
  // bool isAutomation = false;
  // bool isTabToRun = false;

  RoutineBloc() : super(const RoutineState()) {
    on<AddToIfContainer>(_onAddToIfContainer);
    on<AddToThenContainer>(_onAddToThenContainer);
    on<LoadScenes>(_onLoadScenes);
    on<LoadAutomation>(_onLoadAutomation);
    on<AddFunctionToRoutine>(_onAddFunctionsToRoutine);
    on<SearchRoutines>(_onSearchRoutines);
    on<AddSelectedIcon>(_onAddSelectedIcon);
    on<CreateSceneEvent>(_onCreateScene);
    on<RemoveDragCard>(_onRemoveDragCard);
    on<ChangeAutomationOperator>(_changeOperatorOperator);
    on<EffectiveTimePeriodEvent>(_onEffectiveTimeEvent);
    on<CreateAutomationEvent>(_onCreateAutomation);
    // on<RemoveFunction>(_onRemoveFunction);
    // on<ClearFunctions>(_onClearFunctions);
  }

  void _onAddToIfContainer(AddToIfContainer event, Emitter<RoutineState> emit) {
    final updatedIfItems = List<Map<String, dynamic>>.from(state.ifItems)
      ..add(event.item);
    if (event.isTabToRun) {
      emit(state.copyWith(
          ifItems: updatedIfItems, isTabToRun: true, isAutomation: false));
    } else {
      emit(state.copyWith(
          ifItems: updatedIfItems, isTabToRun: false, isAutomation: true));
    }
  }

  void _onAddToThenContainer(
      AddToThenContainer event, Emitter<RoutineState> emit) {
    final currentItems = List<Map<String, dynamic>>.from(state.thenItems);

    // Find the index of the item in teh current itemsList
    int index = currentItems.indexWhere(
        (map) => map['uniqueCustomId'] == event.item['uniqueCustomId']);
    // Replace the map if the index is valid
    if (index != -1) {
      currentItems[index] = event.item;
    } else {
      currentItems.add(event.item);
    }

    emit(state.copyWith(thenItems: currentItems));
  }

  void _onAddFunctionsToRoutine(
      AddFunctionToRoutine event, Emitter<RoutineState> emit) {
    try {
      if (event.functions.isEmpty) return;

      final currentSelectedFunctions =
          Map<String, List<DeviceFunctionData>>.from(state.selectedFunctions);

      if (currentSelectedFunctions.containsKey(event.uniqueCustomId)) {
        currentSelectedFunctions[event.uniqueCustomId] =
            List.from(currentSelectedFunctions[event.uniqueCustomId]!)
              ..addAll(event.functions);
      } else {
        currentSelectedFunctions[event.uniqueCustomId] =
            List.from(event.functions);
      }

      emit(state.copyWith(selectedFunctions: currentSelectedFunctions));
    } catch (e) {
      debugPrint('Error adding functions: $e');
    }
  }

  Future<void> _onLoadScenes(
      LoadScenes event, Emitter<RoutineState> emit) async {
    emit(state.copyWith(isLoading: true, errorMessage: null));

    try {
      final scenes = await SceneApi.getScenesByUnitId(event.unitId);
      emit(state.copyWith(
        scenes: scenes,
        isLoading: false,
      ));
    } catch (e) {
      emit(state.copyWith(
        isLoading: false,
        loadScenesErrorMessage: 'Failed to load scenes',
        errorMessage: '',
        loadAutomationErrorMessage: '',
      ));
    }
  }

  Future<void> _onLoadAutomation(
      LoadAutomation event, Emitter<RoutineState> emit) async {
    emit(state.copyWith(isLoading: true, errorMessage: null));

    try {
      final automations = await SceneApi.getAutomationByUnitId(event.unitId);
      emit(state.copyWith(
        automations: automations,
        isLoading: false,
      ));
    } catch (e) {
      emit(state.copyWith(
        isLoading: false,
        loadAutomationErrorMessage: 'Failed to load automations',
        errorMessage: '',
        loadScenesErrorMessage: '',
      ));
    }
  }

  FutureOr<void> _onSearchRoutines(
      SearchRoutines event, Emitter<RoutineState> emit) async {
    emit(state.copyWith(isLoading: true, errorMessage: null));
    await Future.delayed(const Duration(seconds: 1));
    emit(state.copyWith(searchText: event.query));
  }

  FutureOr<void> _onAddSelectedIcon(
      AddSelectedIcon event, Emitter<RoutineState> emit) {
    emit(state.copyWith(selectedIcon: event.icon));
  }

  bool _isFirstActionDelay(List<Map<String, dynamic>> actions) {
    if (actions.isEmpty) return false;
    return actions.first['deviceId'] == 'delay';
  }

  Future<void> _onCreateScene(
      CreateSceneEvent event, Emitter<RoutineState> emit) async {
    try {
      // Check if first action is delay
      if (_isFirstActionDelay(state.thenItems)) {
        emit(state.copyWith(
          errorMessage: 'Cannot have delay as the first action',
          isLoading: false,
        ));
        return;
      }

      emit(state.copyWith(isLoading: true));

      final actions = state.thenItems
          .map((item) {
            final functions =
                state.selectedFunctions[item['uniqueCustomId']] ?? [];
            if (functions.isEmpty) return null;

            final function = functions.first;
            if (item['deviceId'] == 'delay') {
              return CreateSceneAction(
                entityId: function.entityId,
                actionExecutor: 'delay',
                executorProperty: CreateSceneExecutorProperty(
                  functionCode: '',
                  functionValue: '',
                  delaySeconds: function.value,
                ),
              );
            }

            return CreateSceneAction(
              entityId: function.entityId,
              actionExecutor: 'device_issue',
              executorProperty: CreateSceneExecutorProperty(
                functionCode: function.functionCode.toString(),
                functionValue: function.value,
                delaySeconds: 0,
              ),
            );
          })
          .whereType<CreateSceneAction>()
          .toList();

      final createSceneModel = CreateSceneModel(
        spaceUuid: spaceId,
        iconId: state.selectedIcon ?? '',
        showInDevice: true,
        sceneName: state.routineName ?? '',
        decisionExpr: 'and',
        actions: actions,
      );

      final result = await SceneApi.createScene(createSceneModel);
      if (result['success']) {
        emit(const RoutineState());
      } else {
        emit(state.copyWith(
          isLoading: false,
          errorMessage: result['message'],
        ));
      }
    } catch (e) {
      emit(state.copyWith(
        isLoading: false,
        errorMessage: e.toString(),
      ));
    }
  }

  Future<void> _onCreateAutomation(
      CreateAutomationEvent event, Emitter<RoutineState> emit) async {
    try {
      if (state.routineName == null || state.routineName!.isEmpty) {
        emit(state.copyWith(
          errorMessage: 'Automation name is required',
        ));
        return;
      }

      emit(state.copyWith(isLoading: true));

      final conditions = state.ifItems
          .map((item) {
            final functions =
                state.selectedFunctions[item['uniqueCustomId']] ?? [];
            if (functions.isEmpty) return null;

            final function = functions.first;
            return CreateCondition(
              code: state.ifItems.indexOf(item) + 1,
              entityId: function.entityId,
              entityType: 'device_report',
              expr: ConditionExpr(
                statusCode: function.functionCode,
                comparator: function.condition ?? '==',
                statusValue: function.value,
              ),
            );
          })
          .whereType<CreateCondition>()
          .toList();

      if (conditions.isEmpty) {
        emit(state.copyWith(
          isLoading: false,
          errorMessage: 'At least one condition is required',
        ));
        return;
      }

      final createAutomationModel = CreateAutomationModel(
        unitUuid: spaceId,
        automationName: state.routineName!,
        decisionExpr: state.selectedAutomationOperator,
        effectiveTime: state.effectiveTime ??
            EffectiveTime(
              start: '00:00',
              end: '23:59',
              loops: '1111111',
            ),
        conditions: conditions,
        actions: state.thenItems
            .map((item) {
              final functions =
                  state.selectedFunctions[item['uniqueCustomId']] ?? [];
              if (functions.isEmpty) return null;

              final function = functions.first;
              if (function.functionCode == 'automation') {
                return CreateSceneAction(
                  entityId: function.entityId,
                  actionExecutor: function.value,
                  executorProperty: null,
                );
              }

              if (item['deviceId'] == 'delay') {
                return CreateSceneAction(
                  entityId: function.entityId,
                  actionExecutor: 'delay',
                  executorProperty: CreateSceneExecutorProperty(
                    functionCode: '',
                    functionValue: '',
                    delaySeconds: function.value,
                  ),
                );
              }

              return CreateSceneAction(
                entityId: function.entityId,
                actionExecutor: 'device_issue',
                executorProperty: CreateSceneExecutorProperty(
                  functionCode: function.functionCode,
                  functionValue: function.value,
                  delaySeconds: 0,
                ),
              );
            })
            .whereType<CreateSceneAction>()
            .toList(),
      );

      final result = await SceneApi.createAutomation(createAutomationModel);
      if (result['success']) {
        emit(const RoutineState());
      } else {
        emit(state.copyWith(
          isLoading: false,
          errorMessage: result['message'],
        ));
      }
    } catch (e) {
      emit(state.copyWith(
        isLoading: false,
        errorMessage: e.toString(),
      ));
    }
  }

  FutureOr<void> _onRemoveDragCard(
      RemoveDragCard event, Emitter<RoutineState> emit) {
    if (event.isFromThen) {
      final thenItems = List<Map<String, dynamic>>.from(state.thenItems);
      thenItems.removeAt(event.index);
      emit(state.copyWith(thenItems: thenItems));
    } else {
      final ifItems = List<Map<String, dynamic>>.from(state.ifItems);
      ifItems.removeAt(event.index);
      emit(state.copyWith(ifItems: ifItems));
    }
  }

  FutureOr<void> _changeOperatorOperator(
      ChangeAutomationOperator event, Emitter<RoutineState> emit) {
    emit(state.copyWith(
      selectedAutomationOperator: event.operator,
    ));
  }

  FutureOr<void> _onEffectiveTimeEvent(
      EffectiveTimePeriodEvent event, Emitter<RoutineState> emit) {
    emit(state.copyWith(effectiveTime: event.effectiveTime));
  }
}