import 'package:flutter/material.dart';
import 'package:uuid/uuid.dart';
import 'house_note_model.dart';
import 'house_note_api.dart';

class HouseNoteForm extends StatefulWidget {
  final House? house; // 若傳入則為編輯
  const HouseNoteForm({this.house, super.key});

  @override
  State<HouseNoteForm> createState() => _HouseNoteFormState();
}

class _HouseNoteFormState extends State<HouseNoteForm> {
  final _formKey = GlobalKey<FormState>();
  final _api = HouseNoteApiService();

  late String _title;
  String? _address;
  double? _totalPrice;
  double? _totalPing;
  String? _propertyType = '電梯大樓';

  void _submit() async {
    if (_formKey.currentState!.validate()) {
      _formKey.currentState!.save();

      final newHouse = House(
        id: widget.house?.id ?? const Uuid().v4(), // 自動取得 UUID
        title: _title,
        address: _address,
        totalPrice: _totalPrice,
        totalPing: _totalPing,
        propertyType: _propertyType,
      );

      await _api.createHouse(newHouse);
      if (mounted) Navigator.pop(context, true);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text(widget.house == null ? '新增看屋筆記' : '編輯物件')),
      body: Form(
        key: _formKey,
        child: ListView(
          padding: const EdgeInsets.all(20),
          children: [
            TextFormField(
              initialValue: widget.house?.title,
              decoration: const InputDecoration(labelText: '物件名稱 *', hintText: '例：桃園藝文特區三房'),
              validator: (v) => v!.isEmpty ? '請輸入名稱' : null,
              onSaved: (v) => _title = v!,
            ),
            const SizedBox(height: 16),
            TextFormField(
              initialValue: widget.house?.address,
              decoration: const InputDecoration(labelText: '地址', suffixIcon: Icon(Icons.my_location)),
              onSaved: (v) => _address = v,
            ),
            const SizedBox(height: 16),
            Row(
              children: [
                Expanded(
                  child: TextFormField(
                    initialValue: widget.house?.totalPrice?.toString(),
                    decoration: const InputDecoration(labelText: '開價 (萬)', prefixIcon: Icon(Icons.monetization_on_outlined)),
                    keyboardType: TextInputType.number,
                    onSaved: (v) => _totalPrice = double.tryParse(v ?? ''),
                  ),
                ),
                const SizedBox(width: 16),
                Expanded(
                  child: TextFormField(
                    initialValue: widget.house?.totalPing?.toString(),
                    decoration: const InputDecoration(labelText: '坪數', prefixIcon: Icon(Icons.square_foot)),
                    keyboardType: TextInputType.number,
                    onSaved: (v) => _totalPing = double.tryParse(v ?? ''),
                  ),
                ),
              ],
            ),
            const SizedBox(height: 16),
            DropdownButtonFormField<String>(
              value: _propertyType,
              items: ['電梯大樓', '公寓', '華廈', '透天'].map((e) => DropdownMenuItem(value: e, child: Text(e))).toList(),
              onChanged: (v) => setState(() => _propertyType = v),
              decoration: const InputDecoration(labelText: '建物型態'),
            ),
            const SizedBox(height: 40),
            ElevatedButton(
              onPressed: _submit,
              style: ElevatedButton.styleFrom(minimumSize: const Size(double.infinity, 54), shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10))),
              child: const Text('儲存筆記', style: TextStyle(fontSize: 18)),
            ),
          ],
        ),
      ),
    );
  }
}