import 'package:flutter/material.dart';

import '../../core/theme/tokens.dart';
import 'station_data.dart';
import '../../core/i18n/app_locale.dart';

/// 판매처 제안 — S-S-SUGGEST.
///
/// 제안은 `stationSuggestions` 에 `status: 'pending'` 으로 들어가고 운영이 심사한다.
/// 보안 규칙이 생성 시 status 를 pending 으로 못박고 있으므로(§7), 화면이 다른 값을
/// 보내면 거부당한다. 등록 경로는 6주차에 잇는다.
class StationSuggestScreen extends StatefulWidget {
  const StationSuggestScreen({super.key});

  @override
  State<StationSuggestScreen> createState() => _StationSuggestScreenState();
}

class _StationSuggestScreenState extends State<StationSuggestScreen> {
  final _form = GlobalKey<FormState>();
  final _title = TextEditingController();
  final _url = TextEditingController();
  final _reason = TextEditingController();
  StationCategory _category = StationCategory.shop;

  @override
  void dispose() {
    _title.dispose();
    _url.dispose();
    _reason.dispose();
    super.dispose();
  }

  void _submit() {
    if (!(_form.currentState?.validate() ?? false)) return;
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text(context.l10n.stationSuggestLater)),
    );
  }

  @override
  Widget build(BuildContext context) {
    final t = Theme.of(context).textTheme;
    return Scaffold(
      appBar: AppBar(
        title: Text(context.l10n.stationSuggest),
        actions: [TextButton(onPressed: _submit, child: Text(context.l10n.commonSubmit))],
      ),
      body: Form(
        key: _form,
        child: ListView(
          padding: const EdgeInsets.all(AppSpace.s4),
          children: [
            TextFormField(
              controller: _title,
              decoration: InputDecoration(labelText: context.l10n.commonName),
              maxLength: 40,
              validator: (v) =>
                  (v ?? '').trim().isEmpty ? context.l10n.commonNameRequired : null,
            ),
            const SizedBox(height: AppSpace.s3),
            TextFormField(
              controller: _url,
              decoration: InputDecoration(
                labelText: context.l10n.commonUrl,
                hintText: 'https://',
              ),
              keyboardType: TextInputType.url,
              validator: (v) {
                final raw = (v ?? '').trim();
                if (raw.isEmpty) return context.l10n.commonUrlRequired;
                final uri = Uri.tryParse(raw);
                // http 도 막는다. 검증한 판매처를 평문으로 안내할 이유가 없다.
                if (uri == null || uri.scheme != 'https' || uri.host.isEmpty) {
                  return context.l10n.commonUrlHttps;
                }
                return null;
              },
            ),
            const SizedBox(height: AppSpace.s3),
            DropdownButtonFormField<StationCategory>(
              initialValue: _category,
              decoration: InputDecoration(labelText: context.l10n.commonCategory),
              items: [
                for (final c in StationCategory.values)
                  DropdownMenuItem(value: c, child: Text(c.label)),
              ],
              onChanged: (v) => setState(() => _category = v ?? _category),
            ),
            const SizedBox(height: AppSpace.s3),
            TextFormField(
              controller: _reason,
              decoration: InputDecoration(
                labelText: context.l10n.stationReason,
                alignLabelWithHint: true,
              ),
              maxLines: 5,
              maxLength: 500,
            ),
            const SizedBox(height: AppSpace.s5),
            Text(
              context.l10n.stationSuggestNote,
              style: t.bodySmall,
            ),
          ],
        ),
      ),
    );
  }
}