fcs/lib/pages/discount/discount_editor.dart

import 'package:fcs/domain/entities/discount.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/pages/discount/model/discount_model.dart';
import 'package:fcs/pages/main/util.dart';
import 'package:fcs/pages/user_search/user_search.dart';
import 'package:fcs/pages/widgets/display_text.dart';
import 'package:fcs/pages/widgets/input_text.dart';
import 'package:fcs/pages/widgets/local_app_bar.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:provider/provider.dart';

class DiscountEditor extends StatefulWidget {
  final Discount? discount;

  const DiscountEditor({Key? key, this.discount}) : super(key: key);
  @override
  _DiscountEditorState createState() => _DiscountEditorState();
}

class _DiscountEditorState extends State<DiscountEditor> {
  bool _isLoading = false;
  Discount _discount = new Discount();
  TextEditingController _codeController = new TextEditingController();
  TextEditingController _amountController = new TextEditingController();
  TextEditingController _statusController = new TextEditingController();

  bool _isNew = false;
  String customerName = '';
  String customerId = '';
  final _discountFormKey = GlobalKey<FormState>();

  @override
  void initState() {
    super.initState();
    if (widget.discount != null) {
      _discount = widget.discount!;
      _codeController.text = _discount.code ?? "";
      _amountController.text = _discount.amount.toStringAsFixed(2);
      _statusController.text = _discount.status ?? '';
      customerName = _discount.customerName ?? "";
      customerId = _discount.customerId ?? "";
    } else {
      _isNew = true;
    }
  }

  @override
  Widget build(BuildContext context) {
    final codeBox = InputText(
      labelTextKey: 'discount.code',
      iconData: FontAwesomeIcons.algolia,
      controller: _codeController,
      autovalidateMode: AutovalidateMode.onUserInteraction,
      validator: (value) {
        if (value == null || value.isEmpty) {
          return "Please insert code";
        }
        return null;
      },
    );

    final amountBox = InputText(
      labelTextKey: 'discount.amount',
      iconData: FontAwesomeIcons.moneyBill,
      controller: _amountController,
      autovalidateMode: AutovalidateMode.onUserInteraction,
      validator: (value) {
        if (value == null || value.isEmpty) {
          return "Please insert amount";
        }
        return null;
      },
    );

    final statusBox = DisplayText(
      text: _statusController.text,
      labelTextKey: "discount.status",
      iconData: Icons.av_timer,
    );

    final customerBox = Row(
      children: <Widget>[
        Expanded(
            child: DisplayText(
          text: customerName,
          labelTextKey: "discount.name",
          iconData: Feather.user,
        )),
        IconButton(
            icon: Icon(Icons.search, color: primaryColor),
            onPressed: () => searchUser(context, onUserSelect: (u) {
                  setState(() {
                    customerId = u.id ?? "";
                    customerName = u.name ?? "";
                  });
                }, popPage: true)),
      ],
    );

    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
          backgroundColor: Colors.white,
          appBar: LocalAppBar(
            labelKey: "discount.form",
            backgroundColor: Colors.white,
            arrowColor: primaryColor,
            labelColor: primaryColor,
            actions: [
              _isNew
                  ? const SizedBox()
                  : IconButton(
                      icon: Icon(Icons.delete, color: primaryColor),
                      onPressed: _delete)
            ],
          ),
          body: Form(
            key: _discountFormKey,
            child: Padding(
              padding: const EdgeInsets.all(8.0),
              child: Column(
                children: <Widget>[
                  Expanded(
                    child: ListView(
                      children: <Widget>[
                        codeBox,
                        amountBox,
                        SizedBox(height: 7),
                        customerBox,
                        SizedBox(height: 7),
                        widget.discount == null
                            ? Container()
                            : Container(
                                padding: EdgeInsets.only(top: 5),
                                child: statusBox,
                              ),
                      ],
                    ),
                  ),
                  fcsButton(context, getLocalString(context, "btn.save"),
                      callack: _save),
                  SizedBox(
                    height: 30,
                  )
                ],
              ),
            ),
          )),
    );
  }

  _save() async {
    if (!_discountFormKey.currentState!.validate()) {
      return null;
    }
    setState(() {
      _isLoading = true;
    });
    try {
      DiscountModel discountModel =
          Provider.of<DiscountModel>(context, listen: false);
      Discount _discount = Discount(
          code: _codeController.text,
          customerName: customerName,
          customerId: customerId,
          amount: double.parse(_amountController.text));
      if (_isNew) {
        await discountModel.addDiscount(_discount);
      } else {
        _discount.id = this._discount.id;
        await discountModel.updateDiscount(_discount);
      }
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  _delete() {
    showConfirmDialog(
        context, "discount.edit.delete.confirm", _deleteCargoType);
  }

  _deleteCargoType() async {
    setState(() {
      _isLoading = true;
    });
    try {
      var discountModel = Provider.of<DiscountModel>(context, listen: false);
      await discountModel.deleteDiscount(_discount);
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  isDataChanged() {
    if (_isNew) {
      return _codeController.text != "" ||
          _amountController.text != "" ||
          customerName != "";
    } else {
      Discount _discount = Discount(
          code: _codeController.text,
          customerName: customerName,
          customerId: customerId,
          amount: double.parse(_amountController.text));
      return widget.discount!.isChangedForEdit(_discount);
    }
  }
}