Release version 1.0.0
This commit is contained in:
279
lib/screens/add_screen.dart
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279
lib/screens/add_screen.dart
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../models/vehicle.dart';
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import '../models/refuel.dart';
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import '../services/session_manager.dart';
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import 'add_service_screen.dart';
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class AddScreen extends StatefulWidget {
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final Refuel? refuel;
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final VoidCallback? onSaved;
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final bool standalone;
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AddScreen({this.refuel, this.onSaved, this.standalone = false});
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@override
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_AddScreenState createState() => _AddScreenState();
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}
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class _AddScreenState extends State<AddScreen> {
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final _formKey = GlobalKey<FormState>();
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String? _selectedVehicleId;
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FuelType? _selectedFuelType;
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final TextEditingController _litersController = TextEditingController();
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final TextEditingController _pricePerLiterController =
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TextEditingController();
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final TextEditingController _totalPriceController = TextEditingController();
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final TextEditingController _mileageController = TextEditingController();
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final TextEditingController _noteController = TextEditingController();
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final FocusNode _litersFocus = FocusNode();
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final FocusNode _pricePerLiterFocus = FocusNode();
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final FocusNode _totalPriceFocus = FocusNode();
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bool _initialized = false;
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bool _isRecalculating = false;
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@override
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void initState() {
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super.initState();
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_litersController.addListener(_recalculate);
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_pricePerLiterController.addListener(_recalculate);
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_totalPriceController.addListener(_recalculate);
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}
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@override
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void didChangeDependencies() {
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super.didChangeDependencies();
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if (_initialized) return;
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final session = Provider.of<SessionManager>(context);
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if (widget.refuel != null) {
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final r = widget.refuel!;
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_selectedVehicleId = r.vehicleId;
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_selectedFuelType = r.fuelType;
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_litersController.text = r.liters.toString();
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_pricePerLiterController.text = r.pricePerLiter.toString();
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_totalPriceController.text = r.totalPrice.toString();
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_mileageController.text = r.mileage.toString();
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if (r.note != null) _noteController.text = r.note!;
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} else {
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_selectedVehicleId = session.defaultVehicle?.id;
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_selectedFuelType = session.defaultVehicle?.fuelType;
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}
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_initialized = true;
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}
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@override
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Widget build(BuildContext context) {
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final session = Provider.of<SessionManager>(context);
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final vehicles = session.vehicles;
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final form = Padding(
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padding: const EdgeInsets.all(16.0),
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child: Form(
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key: _formKey,
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child: SingleChildScrollView(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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DropdownButtonFormField<String>(
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decoration: InputDecoration(labelText: 'Vehicle'),
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value: _selectedVehicleId,
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items: vehicles
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.map(
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(vehicle) => DropdownMenuItem(
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value: vehicle.id,
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child: Text(vehicle.name),
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),
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)
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.toList(),
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onChanged: (value) {
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setState(() {
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_selectedVehicleId = value;
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final vehicle = vehicles.firstWhere((v) => v.id == value);
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_selectedFuelType = vehicle.fuelType;
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});
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},
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validator:
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(value) => value == null ? 'Please select a vehicle' : null,
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),
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SizedBox(height: 16),
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DropdownButtonFormField<FuelType>(
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decoration: InputDecoration(labelText: 'Fuel Type'),
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value: _selectedFuelType,
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items: FuelType.values
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.map((fuel) => DropdownMenuItem(
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value: fuel,
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child: Text(fuel.label),
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))
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.toList(),
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onChanged: (value) => setState(() => _selectedFuelType = value),
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validator:
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(value) => value == null ? 'Please select a fuel type' : null,
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),
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SizedBox(height: 16),
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TextFormField(
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controller: _litersController,
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focusNode: _litersFocus,
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decoration: InputDecoration(labelText: 'Liters'),
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keyboardType: TextInputType.number,
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validator: _numberValidator,
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),
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SizedBox(height: 16),
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TextFormField(
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controller: _pricePerLiterController,
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focusNode: _pricePerLiterFocus,
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decoration: InputDecoration(labelText: 'Price per Liter'),
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keyboardType: TextInputType.number,
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validator: _numberValidator,
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),
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SizedBox(height: 16),
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TextFormField(
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controller: _totalPriceController,
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focusNode: _totalPriceFocus,
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decoration: InputDecoration(labelText: 'Total Price'),
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keyboardType: TextInputType.number,
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validator: _numberValidator,
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),
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SizedBox(height: 16),
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TextFormField(
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controller: _mileageController,
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decoration: InputDecoration(labelText: 'Mileage'),
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keyboardType: TextInputType.number,
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validator: _numberValidator,
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),
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SizedBox(height: 16),
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TextFormField(
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controller: _noteController,
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decoration: InputDecoration(labelText: 'Note'),
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keyboardType: TextInputType.text,
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),
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SizedBox(height: 24),
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ElevatedButton(
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onPressed: _submitForm,
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.green,
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),
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child: Text(widget.refuel == null
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? 'Create Fuel Record'
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: 'Update Fuel Record'),
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),
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if (!widget.standalone) ...[
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SizedBox(height: 16),
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ElevatedButton.icon(
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onPressed: () {
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => AddServiceScreen(standalone: true),
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),
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);
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},
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icon: Icon(Icons.build),
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label: Text('Add Service Record'),
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),
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],
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],
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),
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),
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),
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);
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if (widget.standalone) {
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return Scaffold(
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appBar: AppBar(
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title: Text(widget.refuel == null
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? 'Add Refuel Record'
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: 'Edit Refuel Record'),
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),
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body: form,
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);
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}
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return form;
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}
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String? _numberValidator(String? value) {
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if (value == null || value.isEmpty) return 'This field cannot be empty';
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if (double.tryParse(value) == null) return 'Enter a valid number';
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return null;
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}
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void _recalculate() {
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if (_isRecalculating) return;
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final liters = double.tryParse(_litersController.text);
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final price = double.tryParse(_pricePerLiterController.text);
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final total = double.tryParse(_totalPriceController.text);
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_isRecalculating = true;
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if (!_totalPriceFocus.hasFocus && liters != null && price != null) {
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_totalPriceController.text = (liters * price).toStringAsFixed(2);
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} else if (!_pricePerLiterFocus.hasFocus && liters != null && total != null) {
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_pricePerLiterController.text = (total / liters).toStringAsFixed(2);
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} else if (!_litersFocus.hasFocus && price != null && total != null) {
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_litersController.text = (total / price).toStringAsFixed(2);
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}
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_isRecalculating = false;
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}
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void _submitForm() async {
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if (!(_formKey.currentState?.validate() ?? false)) return;
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final session = Provider.of<SessionManager>(context, listen: false);
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final refuel = Refuel(
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id: widget.refuel?.id,
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vehicleId: _selectedVehicleId!,
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fuelType: _selectedFuelType!,
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liters: double.parse(_litersController.text),
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pricePerLiter: double.parse(_pricePerLiterController.text),
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totalPrice: double.parse(_totalPriceController.text),
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mileage: int.parse(_mileageController.text),
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note: _noteController.text.isEmpty ? null : _noteController.text,
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);
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if (widget.refuel == null) {
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await session.addRefuel(refuel);
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} else if (widget.refuel!.id != null) {
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await session.updateRefuel(widget.refuel!.id!, refuel);
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}
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('Fuel record saved successfully!')),
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);
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_formKey.currentState?.reset();
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setState(() {
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_selectedVehicleId = session.defaultVehicle?.id;
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_selectedFuelType = session.defaultVehicle?.fuelType;
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});
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_litersController.clear();
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_pricePerLiterController.clear();
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_totalPriceController.clear();
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_mileageController.clear();
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_noteController.clear();
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if (Navigator.canPop(context)) {
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Navigator.pop(context);
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} else {
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widget.onSaved?.call();
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}
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}
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@override
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void dispose() {
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_litersController.dispose();
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_pricePerLiterController.dispose();
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_totalPriceController.dispose();
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_mileageController.dispose();
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_noteController.dispose();
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_litersFocus.dispose();
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_pricePerLiterFocus.dispose();
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_totalPriceFocus.dispose();
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super.dispose();
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}
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}
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