import 'package:flutter/material.dart';

import '../../app_theme.dart';
import '../../model/latlng.dart';
import '../../model/location.dart';
import '../../service/validators.dart';

class CreateLocationDialog extends StatefulWidget {
  const CreateLocationDialog({super.key, this.initialLocation});
  final Location? initialLocation;

  @override
  State<CreateLocationDialog> createState() => _CreateLocationDialogState();
}

class _CreateLocationDialogState extends State<CreateLocationDialog> {
  final nameController = TextEditingController();
  final addressController = TextEditingController();
  final coordinatesController = TextEditingController();
  final formKey = GlobalKey<FormState>(debugLabel: 'Create Location Form');

  @override
  void initState() {
    if (widget.initialLocation != null) {
      nameController.text = widget.initialLocation!.name;
      addressController.text = widget.initialLocation!.address;
      coordinatesController.text = widget.initialLocation!.coordinates
          .toString();
    }
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      actions: [
        TextButton(onPressed: onCancelPressed, child: Text('Cancel')),
        TextButton(onPressed: onSavePressed, child: Text('Save')),
      ],
      title: Text('Create Location'),
      content: Form(
        key: formKey,
        child: Column(
          spacing: AppTheme.formColumnSpacing,
          mainAxisSize: MainAxisSize.min,
          children: [
            TextFormField(
              autofocus: true,
              textInputAction: TextInputAction.next,
              controller: nameController,
              keyboardType: TextInputType.text,
              decoration: InputDecoration(labelText: 'Name'),
              validator: notEmptyValidator,
            ),
            TextFormField(
              textInputAction: TextInputAction.next,
              controller: addressController,
              keyboardType: TextInputType.streetAddress,
              decoration: InputDecoration(labelText: 'Address (optional)'),
            ),
            TextFormField(
              textInputAction: TextInputAction.done,
              controller: coordinatesController,
              onFieldSubmitted: (_) => onSavePressed(),
              keyboardType: TextInputType.numberWithOptions(),
              decoration: InputDecoration(
                labelText: 'Coordinates',
                hint: Text('25.5892, 50.5051662'),
              ),
              validator: (value) {
                return notEmptyValidator(value) ?? coordinatesValidator(value);
              },
            ),
          ],
        ),
      ),
    );
  }

  void onCancelPressed() => Navigator.of(context).pop();

  void onSavePressed() {
    if (formKey.currentState!.validate()) {
      Navigator.of(context).pop(
        Location(
          name: nameController.text,
          coordinates: LatLng.fromString(coordinatesController.text),
          address: addressController.text,
        ),
      );
    }
  }
}