fcs/lib/pages/fcs_shipment/fcs_shipment_editor.dart

import 'package:fcs/domain/entities/fcs_shipment.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/localization/app_translations.dart';
import 'package:fcs/pages/fcs_shipment/model/fcs_shipment_model.dart';
import 'package:fcs/pages/main/model/language_model.dart';
import 'package:fcs/pages/main/model/main_model.dart';
import 'package:fcs/pages/widgets/input_date.dart';
import 'package:fcs/pages/widgets/input_text.dart';
import 'package:fcs/pages/widgets/local_app_bar.dart';
import 'package:fcs/pages/widgets/local_button.dart';
import 'package:fcs/pages/widgets/progress.dart';
import 'package:flutter/material.dart';
import 'package:flutter_vector_icons/flutter_vector_icons.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:intl/intl.dart';
import 'package:provider/provider.dart';

import '../main/util.dart';

class FcsShipmentEditor extends StatefulWidget {
  final FcsShipment? shipment;
  FcsShipmentEditor({this.shipment});

  @override
  _FcsShipmentEditorState createState() => _FcsShipmentEditorState();
}

class _FcsShipmentEditorState extends State<FcsShipmentEditor> {
  var dateFormatter = new DateFormat('dd MMM yyyy');
  TextEditingController _shipmentNumberController = new TextEditingController();
  TextEditingController _cutoffDateController = new TextEditingController();
  TextEditingController _arrivalDateController = new TextEditingController();
  TextEditingController _departureDateControler = new TextEditingController();
  TextEditingController _consigneeController = new TextEditingController();
  TextEditingController _portController = new TextEditingController();
  TextEditingController _destinationController = new TextEditingController();
  TextEditingController _statusController = new TextEditingController();

  FcsShipment _shipment = new FcsShipment();
  bool _isLoading = false;
  String? _currentShipmentType;
  bool _isNew = false;

  @override
  void initState() {
    super.initState();
    _isNew = widget.shipment == null;
    if (widget.shipment != null) {
      _shipment = widget.shipment!;
      _shipmentNumberController.text = _shipment.shipmentNumber ?? "";
      if (_shipment.cutoffDate != null)
        _cutoffDateController.text =
            dateFormatter.format(_shipment.cutoffDate!);
      if (_shipment.arrivalDate != null)
        _arrivalDateController.text =
            dateFormatter.format(_shipment.arrivalDate!);
      if (_shipment.departureDate != null)
        _departureDateControler.text =
            dateFormatter.format(_shipment.departureDate!);
      _statusController.text = _shipment.status ?? "";
      _currentShipmentType = _shipment.shipType;
      _consigneeController.text = _shipment.consignee ?? "";
      _portController.text = _shipment.port ?? "";
      _destinationController.text = _shipment.destination ?? "";
    } else {
      var mainModel = Provider.of<MainModel>(context, listen: false);
      _currentShipmentType = mainModel.setting!.shipmentTypes[0];
    }
  }

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    var languageModel = Provider.of<LanguageModel>(context);
    var mainModel = Provider.of<MainModel>(context);

    final createBtn = Padding(
      padding: const EdgeInsets.symmetric(horizontal: 30),
      child: LocalButton(
        textKey: "FCSshipment.create",
        callBack: _create,
      ),
    );

    final updateBtn = Padding(
      padding: const EdgeInsets.symmetric(horizontal: 30),
      child: LocalButton(
        textKey: "FCSshipment.update",
        callBack: _update,
      ),
    );

    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
        appBar: LocalAppBar(
            labelKey: _isNew ? "FCSshipment.add" : "FCSshipment.form.title",
            backgroundColor: Colors.white,
            labelColor: primaryColor,
            arrowColor: primaryColor,
            onBack: () {
              if (isDataChanged()) {
                showConfirmDialog(context, "back.button_confirm", () {
                  Navigator.of(context).pop();
                });
              } else {
                Navigator.of(context).pop();
              }
            }),
        body: ListView(
            padding: const EdgeInsets.only(left: 10, right: 10),
            children: <Widget>[
              InputText(
                labelTextKey: "FCSshipment.number",
                iconData: Ionicons.ios_airplane,
                controller: _shipmentNumberController,
              ),
              InputDate(
                labelTextKey: "FCSshipment.cutoff_date",
                iconData: Icons.date_range,
                controller: _cutoffDateController,
              ),
              InputDate(
                labelTextKey: "FCSshipment.ETA",
                iconData: Icons.date_range,
                controller: _arrivalDateController,
              ),
              DropdownButtonFormField(
                value: _currentShipmentType == "" ? null : _currentShipmentType,
                decoration: InputDecoration(
                    enabledBorder: UnderlineInputBorder(
                        borderSide: BorderSide(color: primaryColor)),
                    focusedBorder: UnderlineInputBorder(
                        borderSide: BorderSide(color: primaryColor)),
                    fillColor: Colors.white,
                    labelStyle: languageModel.isEng
                        ? newLabelStyle(color: Colors.black54, fontSize: 20)
                        : newLabelStyleMM(color: Colors.black54, fontSize: 20),
                    labelText: AppTranslations.of(context)!
                        .text('FCSshipment.shipment_type'),
                    icon: Icon(Ionicons.ios_airplane, color: primaryColor)),
                items: mainModel.setting!.shipmentTypes
                    .map((e) => DropdownMenuItem(child: Text(e), value: e))
                    .toList(),
                onChanged: (String? selected) => {
                  setState(() {
                    _currentShipmentType = selected;
                  })
                },
              ),
              InputText(
                  labelTextKey: 'FCSshipment.consignee',
                  iconData: Icons.work,
                  controller: _consigneeController),
              InputText(
                  labelTextKey: 'FCSshipment.port_of_loading',
                  iconData: FontAwesomeIcons.ship,
                  controller: _portController),
              InputText(
                  labelTextKey: 'FCSshipment.final_destination',
                  iconData: MaterialCommunityIcons.location_enter,
                  controller: _destinationController),
              SizedBox(height: 20),
              _isNew ? createBtn : updateBtn,
              SizedBox(height: 15)
            ]),
      ),
    );
  }

  FcsShipment _getPayload() {
    FcsShipment fcsShipment = FcsShipment();
    fcsShipment.id = _shipment.id;
    fcsShipment.shipmentNumber = _shipmentNumberController.text;
    fcsShipment.shipType = _currentShipmentType!;
    fcsShipment.consignee = _consigneeController.text;
    fcsShipment.port = _portController.text;
    fcsShipment.destination = _destinationController.text;
    try {
      var cutoffDate = _cutoffDateController.text;
      var arrivalDate = _arrivalDateController.text;
      fcsShipment.cutoffDate =
          (cutoffDate == "" ? null : dateFormatter.parse(cutoffDate))!;
      fcsShipment.arrivalDate =
          (arrivalDate == "" ? null : dateFormatter.parse(arrivalDate))!;
    } catch (e) {
      // showMsgDialog(context, "Error", e.toString()); // shold never happen
    }
    return fcsShipment;
  }

  Future<bool> _validate(FcsShipment fcsShipment) async {
    if (fcsShipment.shipmentNumber == "") {
      await showMsgDialog(context, "Error", "Invalid shipment number!");
      return false;
    }
    if (fcsShipment.shipType == null) {
      await showMsgDialog(context, "Error", "Invalid shipment type!");
      return false;
    }
    if (fcsShipment.cutoffDate == null) {
      await showMsgDialog(context, "Error", "Invalid cutoff date!");
      return false;
    }
    if (fcsShipment.arrivalDate == null) {
      await showMsgDialog(context, "Error", "Invalid ETA date!");
      return false;
    }
    return true;
  }

  Future<void> _create() async {
    FcsShipment fcsShipment = _getPayload();
    bool valid = await _validate(fcsShipment);
    if (!valid) {
      return;
    }
    setState(() {
      _isLoading = true;
    });
    var shipmentModel = Provider.of<FcsShipmentModel>(context, listen: false);
    try {
      await shipmentModel.create(fcsShipment);
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  Future<void> _update() async {
    FcsShipment fcsShipment = _getPayload();
    bool valid = await _validate(fcsShipment);
    if (!valid) {
      return;
    }
    setState(() {
      _isLoading = true;
    });
    var shipmentModel = Provider.of<FcsShipmentModel>(context, listen: false);
    try {
      await shipmentModel.update(fcsShipment);
      Navigator.pop(context, true);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  isDataChanged() {
    if (_isNew) {
      var mainModel = Provider.of<MainModel>(context, listen: false);
      return _shipmentNumberController.text != "" ||
          _cutoffDateController.text != "" ||
          _arrivalDateController.text != "" ||
          _consigneeController.text != "" ||
          _portController.text != "" ||
          _destinationController.text != "" ||
          _currentShipmentType != mainModel.setting!.shipmentTypes[0];
    } else {
      FcsShipment fcsShipment = _getPayload();
      return widget.shipment!.isChangedForEdit(fcsShipment);
    }
  }
}