fcs/lib/pages/rates/custom_editor.dart

import 'package:fcs/domain/entities/cargo_type.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/localization/app_translations.dart';
import 'package:fcs/pages/main/util.dart';
import 'package:fcs/pages/widgets/input_text.dart';
import 'package:fcs/pages/widgets/progress.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:provider/provider.dart';

import 'model/shipment_rate_model.dart';

class CustomEditor extends StatefulWidget {
  final CargoType custom;
  CustomEditor({this.custom});

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

class _CustomEditorState extends State<CustomEditor> {
  TextEditingController _productController = new TextEditingController();
  TextEditingController _feeController = new TextEditingController();
  TextEditingController _shipmentRateController = new TextEditingController();

  bool _isLoading = false;
  CargoType _custom = new CargoType();
  bool _isNew = false;

  @override
  void initState() {
    super.initState();
    if (widget.custom != null) {
      _custom = widget.custom;
      _productController.text = _custom.name;
      _feeController.text = _custom.customDutyFee.toStringAsFixed(2);
      _shipmentRateController.text =
          _custom.rate == null ? "" : _custom.rate.toStringAsFixed(2);
    } else {
      _isNew = true;
    }
  }

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

  @override
  Widget build(BuildContext context) {
    final productBox = InputText(
        labelTextKey: 'rate.cutom.product_type',
        iconData: FontAwesomeIcons.weightHanging,
        controller: _productController);
    final feeBox = InputText(
        labelTextKey: 'rate.custom.fee',
        iconData: Icons.attach_money,
        controller: _feeController);

    final shipmentRateBox = InputText(
        labelTextKey: 'rate.custom.shipment_rate',
        iconData: Icons.attach_money,
        controller: _shipmentRateController);
    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
        appBar: AppBar(
          centerTitle: true,
          leading: new IconButton(
            icon: new Icon(
              CupertinoIcons.back,
            ),
            onPressed: () {
              if (isDataChanged()) {
                showConfirmDialog(context, "back.button_confirm", () {
                  Navigator.of(context).pop();
                });
              } else {
                Navigator.of(context).pop();
              }
            },
          ),
          backgroundColor: primaryColor,
          title:
              Text(AppTranslations.of(context).text("rate.custom.form.title")),
          actions: [
            IconButton(
              icon: Icon(Icons.delete),
              onPressed: _delete,
            )
          ],
        ),
        body: Container(
          padding: EdgeInsets.all(18),
          child: Column(
            children: <Widget>[
              Expanded(
                child: ListView(
                  children: <Widget>[
                    productBox,
                    feeBox,
                    shipmentRateBox,
                    SizedBox(height: 30),
                  ],
                ),
              ),
              fcsButton(context, getLocalString(context, "btn.save"),
                  callack: _save),
              SizedBox(height: 10)
            ],
          ),
        ),
      ),
    );
  }

  _save() async {
    setState(() {
      _isLoading = true;
    });
    try {
      var shipmentRateModel =
          Provider.of<ShipmentRateModel>(context, listen: false);
      CargoType _customduty = CargoType(
          name: _productController.text,
          customDutyFee: double.parse(_feeController.text),
          rate: double.parse(_shipmentRateController.text));
      if (_isNew) {
        await shipmentRateModel.addCustomDuty(_customduty);
      } else {
        _customduty.id = widget.custom.id;
        await shipmentRateModel.updateCustomDuty(_customduty);
      }
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  _delete() {
    showConfirmDialog(
        context, "rate.custom.edit.delete.confirm", _deleteCustomDuty);
  }

  _deleteCustomDuty() async {
    setState(() {
      _isLoading = true;
    });
    try {
      var shipmentRateModel =
          Provider.of<ShipmentRateModel>(context, listen: false);
      await shipmentRateModel.deleteCustomDuty(widget.custom.id);
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  isDataChanged() {
    if (_isNew) {
      return _productController.text != "" ||
          _feeController.text != "" ||
          _shipmentRateController.text != "";
    } else {
      CargoType _customduty = CargoType(
          name: _productController.text,
          customDutyFee: double.parse(_feeController.text),
          rate: double.parse(_shipmentRateController.text));
      return widget.custom.isChangedForEditCustomDuty(_customduty);
    }
  }
}