// Dart imports:
import 'dart:async';

// Flutter imports:
import 'package:flutter/material.dart';

// Package imports:
import 'package:flutter_redux/flutter_redux.dart';
import 'package:redux/redux.dart';

// Project imports:
import 'package:invoiceninja_flutter/data/models/models.dart';
import 'package:invoiceninja_flutter/redux/app/app_actions.dart';
import 'package:invoiceninja_flutter/redux/app/app_state.dart';
import 'package:invoiceninja_flutter/redux/task/task_actions.dart';
import 'package:invoiceninja_flutter/redux/ui/ui_actions.dart';
import 'package:invoiceninja_flutter/ui/task/edit/task_edit_desktop.dart';
import 'package:invoiceninja_flutter/ui/task/edit/task_edit_details.dart';

class TaskEditDetailsScreen extends StatelessWidget {
  const TaskEditDetailsScreen({Key? key}) : super(key: key);
  static const String route = '/task/edit';

  @override
  Widget build(BuildContext context) {
    return StoreConnector<AppState, TaskEditDetailsVM>(
      converter: (Store<AppState> store) {
        return TaskEditDetailsVM.fromStore(store);
      },
      builder: (context, viewModel) {
        if (viewModel.state.prefState.isEditorFullScreen(EntityType.task)) {
          return TaskEditDesktop(
            viewModel: viewModel,
            //entityViewModel: this.viewModel,
            //key: ValueKey('__task_${viewModel.task.id}__'),
          );
        } else {
          return TaskEditDetails(
            viewModel: viewModel,
          );
        }
      },
    );
  }
}

class TaskEditDetailsVM {
  TaskEditDetailsVM({
    required this.state,
    required this.task,
    required this.taskTimeIndex,
    required this.company,
    required this.onChanged,
    required this.onAddClientPressed,
    required this.onAddProjectPressed,
    required this.onUpdatedTaskTime,
    required this.onRemoveTaskTime,
    required this.isSaving,
    required this.origTask,
    required this.isLoading,
  });

  factory TaskEditDetailsVM.fromStore(Store<AppState> store) {
    final task = store.state.taskUIState.editing!;
    final state = store.state;

    return TaskEditDetailsVM(
      isLoading: state.isLoading,
      isSaving: state.isSaving,
      origTask: state.taskState.map[task.id],
      task: task,
      taskTimeIndex: state.taskUIState.editingTimeIndex,
      state: state,
      company: state.company,
      onChanged: (TaskEntity task) {
        store.dispatch(UpdateTask(task));
      },
      onAddClientPressed: (context, completer) {
        createEntity(
            context: context,
            entity: ClientEntity(),
            force: true,
            completer: completer,
            cancelCompleter: Completer<Null>()
              ..future.then<Null>((_) {
                store.dispatch(UpdateCurrentRoute(TaskEditDetailsScreen.route));
              }));
        completer.future.then((SelectableEntity client) {
          store.dispatch(UpdateCurrentRoute(TaskEditDetailsScreen.route));
        });
      },
      onUpdatedTaskTime: (taskTime, index) {
        if (index == task.getTaskTimes().length) {
          store.dispatch(AddTaskTime(taskTime));
        } else {
          store.dispatch(UpdateTaskTime(taskTime: taskTime, index: index));
        }
      },
      onRemoveTaskTime: (index) {
        store.dispatch(DeleteTaskTime(index));
      },
      onAddProjectPressed: (context, completer) {
        createEntity(
            context: context,
            entity: ProjectEntity()
                .rebuild((b) => b..clientId = task.clientId ?? ''),
            force: true,
            completer: completer,
            cancelCompleter: Completer<Null>()
              ..future.then<Null>((_) {
                store.dispatch(UpdateCurrentRoute(TaskEditDetailsScreen.route));
              }));
        completer.future.then((SelectableEntity client) {
          store.dispatch(UpdateCurrentRoute(TaskEditDetailsScreen.route));
        });
      },
    );
  }

  final TaskEntity task;
  final int? taskTimeIndex;
  final CompanyEntity? company;
  final Function(TaskEntity) onChanged;
  final bool isLoading;
  final bool isSaving;
  final TaskEntity? origTask;
  final AppState state;
  final Function(BuildContext context, Completer<SelectableEntity> completer)
      onAddClientPressed;
  final Function(BuildContext context, Completer<SelectableEntity> completer)
      onAddProjectPressed;
  final Function(TaskTime, int) onUpdatedTaskTime;
  final Function(int) onRemoveTaskTime;
}