import 'package:flutter/material.dart';
import 'package:flutter_foreground_task/flutter_foreground_task.dart';
import '../main.dart';
import 'login_screen.dart';

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

  @override
  State<SettingsScreen> createState() => _SettingsScreenState();
}

class _SettingsScreenState extends State<SettingsScreen> {
  @override
  Widget build(BuildContext context) {
    final colors = Theme.of(context).colorScheme;

    return Scaffold(
      appBar: AppBar(title: const Text('设置')),
      body: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Card(
              child: Padding(
                padding: const EdgeInsets.all(16),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text('服务器', style: Theme.of(context).textTheme.titleMedium),
                    const SizedBox(height: 8),
                    Text('地址: ${settings.serverUrl ?? "未设置"}',
                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(color: colors.onSurfaceVariant)),
                    Text('令牌: ${settings.token != null ? "已配置" : "未设置"}',
                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(color: colors.onSurfaceVariant)),
                  ],
                ),
              ),
            ),
            const SizedBox(height: 16),
            Card(
              child: Padding(
                padding: const EdgeInsets.all(16),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text('上传模式', style: Theme.of(context).textTheme.titleMedium),
                    const SizedBox(height: 8),
                    SwitchListTile(
                      title: const Text('自动上传'),
                      subtitle: Text(
                        settings.autoUpload
                            ? '后台服务运行中，自动上传新短信'
                            : '自动上传新收到的短信',
                        style: TextStyle(color: settings.autoUpload ? colors.primary : null),
                      ),
                      value: settings.autoUpload,
                      onChanged: (v) {
                        settings.setAutoUpload(v);
                        if (!v) {
                          FlutterForegroundTask.stopService();
                        }
                        setState(() {});
                      },
                      contentPadding: EdgeInsets.zero,
                    ),
                  ],
                ),
              ),
            ),
            const Spacer(),
            SizedBox(
              width: double.infinity,
              child: OutlinedButton.icon(
                onPressed: () {
                  FlutterForegroundTask.stopService();
                  settings.setToken('');
                  settings.setAutoUpload(false);
                  Navigator.of(context).pushAndRemoveUntil(
                    MaterialPageRoute(builder: (_) => const LoginScreen()),
                    (_) => false,
                  );
                },
                icon: const Icon(Icons.logout),
                label: const Text('断开连接'),
                style: OutlinedButton.styleFrom(foregroundColor: colors.error),
              ),
            ),
          ],
        ),
      ),
    );
  }
}