import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';

import '../labels.dart';
import '../services/auth_controller.dart';
import '../ui/feedback.dart';

class AddDealerScreen extends StatefulWidget {
  const AddDealerScreen({super.key});

  @override
  State<AddDealerScreen> createState() => _AddDealerScreenState();
}

class _AddDealerScreenState extends State<AddDealerScreen> {
  final _name = TextEditingController();
  final _code = TextEditingController();
  final _address = TextEditingController();
  final _phone = TextEditingController();
  String? _district;
  bool _saving = false;

  @override
  void dispose() {
    _name.dispose();
    _code.dispose();
    _address.dispose();
    _phone.dispose();
    super.dispose();
  }

  Future<void> _save() async {
    setState(() => _saving = true);
    try {
      await context.read<AuthController>().api.createDealer({
        'name': _name.text.trim(),
        'code': _code.text.trim(),
        'district': _district ?? '',
        'address': _address.text.trim(),
        'phone': _phone.text.trim(),
      });
      if (!mounted) return;
      showNotice(context, 'Dealer and login created');
      Navigator.pop(context, true);
    } catch (error) {
      if (mounted) showError(context, error);
    } finally {
      if (mounted) setState(() => _saving = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Add dealer')),
      body: ListView(
        padding: const EdgeInsets.all(16),
        children: [
          TextField(controller: _name, decoration: const InputDecoration(labelText: 'Name')),
          const SizedBox(height: 12),
          TextField(controller: _code, decoration: const InputDecoration(labelText: 'Code')),
          const SizedBox(height: 12),
          DropdownButtonFormField<String>(
            initialValue: _district,
            isExpanded: true,
            decoration: const InputDecoration(labelText: 'District'),
            items: [
              for (final district in sriLankaDistricts)
                DropdownMenuItem(value: district, child: Text(district)),
            ],
            onChanged: (value) => setState(() => _district = value),
          ),
          const SizedBox(height: 12),
          TextField(controller: _address, decoration: const InputDecoration(labelText: 'Address')),
          const SizedBox(height: 12),
          TextField(
            controller: _phone,
            keyboardType: TextInputType.phone,
            inputFormatters: [FilteringTextInputFormatter.digitsOnly],
            decoration: const InputDecoration(
              labelText: 'Contact phone',
              hintText: '0715127342',
              helperText: 'This number becomes the dealer login',
            ),
          ),
          const SizedBox(height: 16),
          FilledButton(
            onPressed: _saving ? null : _save,
            child: Text(_saving ? 'Saving' : 'Create dealer'),
          ),
        ],
      ),
    );
  }
}