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

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

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

// Project imports:
import 'package:invoiceninja_flutter/constants.dart';
import 'package:invoiceninja_flutter/data/models/group_model.dart';
import 'package:invoiceninja_flutter/data/models/models.dart';
import 'package:invoiceninja_flutter/data/web_client.dart';
import 'package:invoiceninja_flutter/main_app.dart';
import 'package:invoiceninja_flutter/redux/app/app_state.dart';
import 'package:invoiceninja_flutter/redux/client/client_actions.dart';
import 'package:invoiceninja_flutter/redux/company/company_actions.dart';
import 'package:invoiceninja_flutter/redux/group/group_actions.dart';
import 'package:invoiceninja_flutter/redux/settings/settings_actions.dart';
import 'package:invoiceninja_flutter/ui/settings/invoice_design.dart';
import 'package:invoiceninja_flutter/utils/completers.dart';
import 'package:invoiceninja_flutter/utils/dialogs.dart';
import 'package:invoiceninja_flutter/utils/localization.dart';

class InvoiceDesignScreen extends StatelessWidget {
  const InvoiceDesignScreen({Key key}) : super(key: key);
  static const String route = '/$kSettings/$kSettingsInvoiceDesign';

  @override
  Widget build(BuildContext context) {
    return StoreConnector<AppState, InvoiceDesignVM>(
      converter: InvoiceDesignVM.fromStore,
      builder: (context, viewModel) {
        return InvoiceDesign(
          viewModel: viewModel,
          key: ValueKey(viewModel.state.settingsUIState.updatedAt),
        );
      },
    );
  }
}

class InvoiceDesignVM {
  InvoiceDesignVM({
    @required this.state,
    @required this.company,
    @required this.onSavePressed,
    @required this.settings,
    @required this.onSettingsChanged,
  });

  static InvoiceDesignVM fromStore(Store<AppState> store) {
    final state = store.state;

    return InvoiceDesignVM(
        state: state,
        settings: state.uiState.settingsUIState.settings,
        company: state.uiState.settingsUIState.company,
        onSettingsChanged: (settings) {
          store.dispatch(UpdateSettings(settings: settings));
        },
        onSavePressed: (context, entityTypes) {
          Debouncer.runOnComplete(() {
            final settingsUIState = store.state.uiState.settingsUIState;
            switch (settingsUIState.entityType) {
              case EntityType.company:
                final completer = snackBarCompleter<Null>(
                    context, AppLocalization.of(context).savedSettings)
                  ..future.then((value) {
                    final webClient = WebClient();
                    final credentials = state.credentials;
                    final url = '${credentials.url}/designs/set/default';
                    final settings = store.state.company.settings;
                    entityTypes.forEach((entityType) {
                      webClient
                          .post(
                        url,
                        credentials.token,
                        data: json.encode({
                          'entity': entityType.snakeCase,
                          'design_id': settings.getDesignId(entityType),
                        }),
                      )
                          .then((dynamic response) {
                        showToast(
                            AppLocalization.of(navigatorKey.currentContext)
                                .savedSettings);
                      }).catchError((dynamic error) {
                        showErrorDialog(
                            context: navigatorKey.currentContext,
                            message: '$error');
                      });
                    });
                  });
                store.dispatch(SaveCompanyRequest(
                    completer: completer, company: settingsUIState.company));
                break;
              case EntityType.group:
                final completer = snackBarCompleter<GroupEntity>(
                    context, AppLocalization.of(context).savedSettings);
                store.dispatch(SaveGroupRequest(
                    completer: completer, group: settingsUIState.group));
                break;
              case EntityType.client:
                final completer = snackBarCompleter<ClientEntity>(
                    context, AppLocalization.of(context).savedSettings);
                store.dispatch(SaveClientRequest(
                    completer: completer, client: settingsUIState.client));
                break;
            }
          });
        });
  }

  final AppState state;
  final SettingsEntity settings;
  final CompanyEntity company;
  final Function(SettingsEntity) onSettingsChanged;
  final Function(BuildContext, List<EntityType>) onSavePressed;
}