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

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

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

class _SettingsScreenState extends State<SettingsScreen> {
  final _formKey = GlobalKey<FormState>();
  final _leetcodeController = TextEditingController();
  final _giteaController = TextEditingController();
  final _kodboxController = TextEditingController();

  @override
  void initState() {
    super.initState();
    _loadSettings();
  }

  @override
  void dispose() {
    _leetcodeController.dispose();
    _giteaController.dispose();
    _kodboxController.dispose();
    super.dispose();
  }

  Future<void> _loadSettings() async {
    final authService = Provider.of<AuthService>(context, listen: false);
    await authService.loadCredentials();

    setState(() {
      _leetcodeController.text = authService.credentials['leetcode'] ?? '';
      _giteaController.text = authService.credentials['gitea'] ?? '';
      _kodboxController.text = authService.credentials['kodbox'] ?? '';
    });
  }

  Future<void> _saveSettings() async {
    if (_formKey.currentState!.validate()) {
      final authService = Provider.of<AuthService>(context, listen: false);

      if (_leetcodeController.text.isNotEmpty) {
        await authService.saveCredentials('leetcode', _leetcodeController.text);
      }
      if (_giteaController.text.isNotEmpty) {
        await authService.saveCredentials('gitea', _giteaController.text);
      }
      if (_kodboxController.text.isNotEmpty) {
        await authService.saveCredentials('kodbox', _kodboxController.text);
      }

      if (mounted) {
        ScaffoldMessenger.of(
          context,
        ).showSnackBar(const SnackBar(content: Text('设置已保存')));
        Navigator.pop(context);
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('设置')),
      body: Form(
        key: _formKey,
        child: ListView(
          padding: const EdgeInsets.all(16.0),
          children: [
            _buildPlatformSettings(
              title: 'LeetCode 设置',
              icon: Icons.code,
              controller: _leetcodeController,
              hintText: '请输入 LeetCode Cookie',
            ),
            const SizedBox(height: 16),
            _buildPlatformSettings(
              title: 'Gitea 设置',
              icon: Icons.storage,
              controller: _giteaController,
              hintText: '请输入 Gitea API Token',
            ),
            const SizedBox(height: 16),
            _buildPlatformSettings(
              title: 'KodBox 设置',
              icon: Icons.folder,
              controller: _kodboxController,
              hintText: '请输入 KodBox API Token',
            ),
            const SizedBox(height: 24),
            ElevatedButton(onPressed: _saveSettings, child: const Text('保存设置')),
          ],
        ),
      ),
    );
  }

  Widget _buildPlatformSettings({
    required String title,
    required IconData icon,
    required TextEditingController controller,
    required String hintText,
  }) {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                Icon(icon),
                const SizedBox(width: 8),
                Text(
                  title,
                  style: const TextStyle(
                    fontSize: 18,
                    fontWeight: FontWeight.bold,
                  ),
                ),
              ],
            ),
            const SizedBox(height: 16),
            TextFormField(
              controller: controller,
              decoration: InputDecoration(
                labelText: '认证信息',
                hintText: hintText,
                border: const OutlineInputBorder(),
              ),
              obscureText: true,
            ),
          ],
        ),
      ),
    );
  }
}