fcs/lib/pages/shipment/shipment_box_editor.dart

import 'package:fcs/domain/entities/carton.dart';
import 'package:fcs/domain/entities/cargo_type.dart';
import 'package:fcs/domain/vo/delivery_address.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/pages/carton/cargo_type_editor.dart';
import 'package:fcs/pages/delivery_address/model/delivery_address_model.dart';
import 'package:fcs/pages/rates/model/shipment_rate_model.dart';
import 'package:fcs/pages/widgets/defalut_delivery_address.dart';
import 'package:fcs/pages/widgets/delivery_address_selection.dart';
import 'package:fcs/pages/widgets/display_text.dart';
import 'package:fcs/pages/widgets/length_picker.dart';
import 'package:fcs/pages/widgets/local_button.dart';
import 'package:fcs/pages/widgets/local_text.dart';
import 'package:fcs/pages/widgets/local_title.dart';
import 'package:fcs/pages/widgets/my_data_table.dart';
import 'package:fcs/pages/widgets/progress.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_icons/flutter_icons.dart';
import 'package:provider/provider.dart';

class ShipmentBoxEditor extends StatefulWidget {
  final Carton box;
  ShipmentBoxEditor({this.box});

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

class _ShipmentBoxEditorState extends State<ShipmentBoxEditor> {
  TextEditingController _lengthCtl = new TextEditingController();
  TextEditingController _widthCtl = new TextEditingController();
  TextEditingController _heightCtl = new TextEditingController();

  Carton _box;
  bool _isLoading = false;
  bool _isNew;
  double volumetricRatio = 0;
  double shipmentWeight = 0;

  @override
  void initState() {
    super.initState();

    volumetricRatio = Provider.of<ShipmentRateModel>(context, listen: false)
        .rate
        .volumetricRatio;

    if (widget.box != null) {
      _box = widget.box;
      _isNew = false;
      _lengthCtl.text = _box.length.toString();
      _widthCtl.text = _box.width.toString();
      _heightCtl.text = _box.height.toString();
    } else {
      var shipmentModel =
          Provider.of<DeliveryAddressModel>(context, listen: false);

      _isNew = true;
      _box = Carton(cargoTypes: []);
      _box.deliveryAddress = shipmentModel.defalutAddress;

      _lengthCtl.text = "12";
      _widthCtl.text = "12";
      _heightCtl.text = "12";
    }
    _lengthCtl.addListener(_calShipmentWeight);
    _widthCtl.addListener(_calShipmentWeight);
    _heightCtl.addListener(_calShipmentWeight);
    _calShipmentWeight();
  }

  _calShipmentWeight() {
    double l = double.parse(_lengthCtl.text, (s) => 0);
    double w = double.parse(_widthCtl.text, (s) => 0);
    double h = double.parse(_heightCtl.text, (s) => 0);
    setState(() {
      shipmentWeight = (l * w * h / volumetricRatio).ceilToDouble();
    });
  }

  @override
  Widget build(BuildContext context) {
    final shipmentWeightBox = DisplayText(
      labelTextKey: "shipment.box.shipment.weight",
      text: shipmentWeight == null ? "" : shipmentWeight.toStringAsFixed(0),
      iconData: MaterialCommunityIcons.weight,
    );

    final lengthBox = LengthPicker(
      controller: _lengthCtl,
      lableKey: "shipment.box.length",
    );
    final widthBox = LengthPicker(
      controller: _widthCtl,
      lableKey: "shipment.box.width",
    );
    final heightBox = LengthPicker(
      controller: _heightCtl,
      lableKey: "shipment.box.height",
    );
    final dimBox = Row(
      mainAxisAlignment: MainAxisAlignment.start,
      children: [
        Padding(
          padding: const EdgeInsets.only(right: 8.0),
          child: Icon(FontAwesome.arrow_circle_right, color: primaryColor),
        ),
        SizedBox(child: lengthBox, width: 80),
        SizedBox(child: widthBox, width: 80),
        SizedBox(child: heightBox, width: 80),
      ],
    );
    final createBtn = LocalButton(
      textKey: "shipment.box.add",
      callBack: _creatCarton,
    );
    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
        appBar: AppBar(
          centerTitle: true,
          leading: new IconButton(
            icon: new Icon(
              CupertinoIcons.back,
              color: primaryColor,
            ),
            onPressed: () => Navigator.of(context).pop(),
          ),
          shadowColor: Colors.transparent,
          backgroundColor: Colors.white,
          title: LocalText(
            context,
            _isNew ? "boxes.create.title" : "box.edit.title",
            fontSize: 20,
            color: primaryColor,
          ),
        ),
        body: Padding(
          padding: const EdgeInsets.all(8.0),
          child: ListView(
            children: [
              LocalTitle(
                textKey: "shipment.box.cargo.type",
                trailing: IconButton(
                    icon: Icon(
                      Icons.add_circle,
                      color: primaryColor,
                    ),
                    onPressed: () async {
                      CargoType cargo = await Navigator.push<CargoType>(
                          context,
                          CupertinoPageRoute(
                              builder: (context) => CargoTypeEditor()));
                      _addCargo(cargo);
                    }),
              ),
              MyDataTable(
                headingRowHeight: 40,
                columns: [
                  MyDataColumn(
                    label: LocalText(
                      context,
                      "cargo.type",
                      color: Colors.grey,
                    ),
                  ),
                  MyDataColumn(
                    label: LocalText(
                      context,
                      "cargo.weight",
                      color: Colors.grey,
                    ),
                  ),
                ],
                rows: getCargoRows(context),
              ),
              SizedBox(
                height: 30,
              ),
              LocalTitle(textKey: "shipment.box.dimemsion"),
              dimBox,
              shipmentWeightBox,
              LocalTitle(textKey: "shipment.box.delivery"),
              DefaultDeliveryAddress(
                  deliveryAddress: _box.deliveryAddress,
                  labelKey: "shipment.box.delivery",
                  onTap: () async {
                    DeliveryAddress d = await Navigator.push<DeliveryAddress>(
                      context,
                      CupertinoPageRoute(
                          builder: (context) => DeliveryAddressSelection(
                                deliveryAddress: _box.deliveryAddress,
                              )),
                    );
                    if (d == null) return;
                    setState(() {
                      _box.deliveryAddress = d;
                    });
                  }),
              createBtn
            ],
          ),
        ),
      ),
    );
  }

  List<MyDataRow> getCargoRows(BuildContext context) {
    if (_box.cargoTypes == null) {
      return [];
    }
    double total = 0;
    var rows = _box.cargoTypes.map((c) {
      total += c.weight;
      return MyDataRow(
        onSelectChanged: (bool selected) async {
          CargoType cargo = await Navigator.push<CargoType>(
              context,
              CupertinoPageRoute(
                  builder: (context) => CargoTypeEditor(
                        cargo: c,
                      )));
          _addCargo(cargo);
        },
        cells: [
          MyDataCell(new Text(
            c.name == null ? "" : c.name,
            style: textStyle,
          )),
          MyDataCell(
            Row(
              mainAxisAlignment: MainAxisAlignment.end,
              children: [
                Text(c.weight == null ? "0" : c.weight.toString(),
                    style: textStyle),
                IconButton(
                  icon: Icon(
                    Icons.remove_circle,
                    color: primaryColor,
                  ),
                  onPressed: () => {_removeCargo(c)},
                )
              ],
            ),
          ),
        ],
      );
    }).toList();

    var totalRow = MyDataRow(
      onSelectChanged: (bool selected) {},
      cells: [
        MyDataCell(Align(
          alignment: Alignment.centerRight,
          child: LocalText(
            context,
            "shipment.cargo.total",
            color: Colors.black87,
            fontWeight: FontWeight.bold,
          ),
        )),
        MyDataCell(
          Padding(
            padding: const EdgeInsets.only(right: 48.0),
            child: Align(
                alignment: Alignment.centerRight,
                child: Text(total.toString(),
                    style: TextStyle(fontWeight: FontWeight.bold))),
          ),
        ),
      ],
    );
    rows.add(totalRow);
    return rows;
  }

  _addCargo(CargoType cargo) {
    if (cargo == null) return;
    setState(() {
      _box.cargoTypes.remove(cargo);
      _box.cargoTypes.add(cargo);
    });
  }

  _removeCargo(CargoType cargo) {
    setState(() {
      _box.cargoTypes.remove(cargo);
    });
  }

  _creatCarton() {
    double l = double.parse(_lengthCtl.text, (s) => 0);
    double w = double.parse(_widthCtl.text, (s) => 0);
    double h = double.parse(_heightCtl.text, (s) => 0);
    _box.length = l;
    _box.width = w;
    _box.height = h;
    Navigator.pop(context, _box);
  }
}