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 _leetcodeUserSlugController = TextEditingController();
  final _giteaController = TextEditingController();
  final _giteaUsernameController = TextEditingController();
  final _kodboxController = TextEditingController();
  final _githubUsernameController = TextEditingController();
  final _githubTokenController = TextEditingController();

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

  @override
  void dispose() {
    _leetcodeController.dispose();
    _leetcodeUserSlugController.dispose();
    _giteaController.dispose();
    _giteaUsernameController.dispose();
    _kodboxController.dispose();
    _githubUsernameController.dispose();
    _githubTokenController.dispose();
    super.dispose();
  }

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

    setState(() {
      _leetcodeController.text =
          authService.credentials['leetcode_cookie'] ?? '';
      _leetcodeUserSlugController.text =
          authService.credentials['leetcode_user_slug'] ?? '';
      _giteaController.text = authService.credentials['gitea_token'] ?? '';
      _giteaUsernameController.text =
          authService.credentials['gitea_username'] ?? '';
      _kodboxController.text = authService.credentials['kodbox_token'] ?? '';
      _githubUsernameController.text =
          authService.credentials['github_username'] ?? '';
      _githubTokenController.text =
          authService.credentials['github_token'] ?? '';
    });
  }

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

      if (_leetcodeController.text.isNotEmpty) {
        await authService.saveConfigs(
          'leetcode_cookie',
          _leetcodeController.text,
        );
      }
      if (_leetcodeUserSlugController.text.isNotEmpty) {
        await authService.saveConfigs(
          'leetcode_user_slug',
          _leetcodeUserSlugController.text,
        );
      }
      if (_giteaController.text.isNotEmpty) {
        await authService.saveConfigs('gitea_token', _giteaController.text);
      }
      if (_giteaUsernameController.text.isNotEmpty) {
        await authService.saveConfigs(
          'gitea_username',
          _giteaUsernameController.text,
        );
      }
      if (_kodboxController.text.isNotEmpty) {
        await authService.saveConfigs('kodbox_token', _kodboxController.text);
      }
      if (_githubUsernameController.text.isNotEmpty) {
        await authService.saveConfigs(
          'github_username',
          _githubUsernameController.text,
        );
      }
      if (_githubTokenController.text.isNotEmpty) {
        await authService.saveConfigs(
          'github_token',
          _githubTokenController.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,
              children: [
                TextFormField(
                  controller: _leetcodeController,
                  decoration: const InputDecoration(
                    labelText: 'Cookie',
                    hintText: '请输入 LeetCode Cookie',
                    border: OutlineInputBorder(),
                  ),
                  obscureText: true,
                ),
                const SizedBox(height: 16),
                TextFormField(
                  controller: _leetcodeUserSlugController,
                  decoration: const InputDecoration(
                    labelText: 'User Slug',
                    hintText: '请输入 LeetCode User Slug',
                    border: OutlineInputBorder(),
                  ),
                ),
              ],
            ),
            const SizedBox(height: 16),
            _buildPlatformSettings(
              title: 'Gitea 设置',
              icon: Icons.storage,
              children: [
                TextFormField(
                  controller: _giteaUsernameController,
                  decoration: const InputDecoration(
                    labelText: '用户名',
                    hintText: '请输入 Gitea 用户名',
                    border: OutlineInputBorder(),
                  ),
                ),
                const SizedBox(height: 16),
                TextFormField(
                  controller: _giteaController,
                  decoration: const InputDecoration(
                    labelText: 'API Token',
                    hintText: '请输入 Gitea API Token',
                    border: OutlineInputBorder(),
                  ),
                  obscureText: true,
                ),
              ],
            ),
            const SizedBox(height: 16),
            _buildPlatformSettings(
              title: 'KodBox 设置',
              icon: Icons.folder,
              children: [
                TextFormField(
                  controller: _kodboxController,
                  decoration: const InputDecoration(
                    labelText: 'API Token',
                    hintText: '请输入 KodBox API Token',
                    border: OutlineInputBorder(),
                  ),
                  obscureText: true,
                ),
              ],
            ),
            const SizedBox(height: 16),
            _buildPlatformSettings(
              title: 'GitHub 设置',
              icon: Icons.code,
              children: [
                TextFormField(
                  controller: _githubUsernameController,
                  decoration: const InputDecoration(
                    labelText: '用户名',
                    hintText: '请输入 GitHub 用户名',
                    border: OutlineInputBorder(),
                  ),
                ),
                const SizedBox(height: 16),
                TextFormField(
                  controller: _githubTokenController,
                  decoration: const InputDecoration(
                    labelText: 'Personal Access Token',
                    hintText: '请输入 GitHub Personal Access Token',
                    border: OutlineInputBorder(),
                  ),
                  obscureText: true,
                ),
              ],
            ),
            const SizedBox(height: 24),
            ElevatedButton(onPressed: _saveSettings, child: const Text('保存设置')),
          ],
        ),
      ),
    );
  }

  Widget _buildPlatformSettings({
    required String title,
    required IconData icon,
    required List<Widget> children,
  }) {
    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),
            ...children,
          ],
        ),
      ),
    );
  }
}