import 'dart:convert';

import 'package:fl_lib/fl_lib.dart';
import 'package:server_box/data/model/opencode/models.dart';

/// Opencode 会话存储
class OpencodeSessionStore {
  static const _boxName = 'opencode_sessions';
  late final Box<String> _box;

  static final OpencodeSessionStore _instance = OpencodeSessionStore._internal();
  factory OpencodeSessionStore() => _instance;
  OpencodeSessionStore._internal();

  Future<void> init() async {
    _box = await Hive.openBox<String>(_boxName);
  }

  Future<void> saveSession(OpencodeSession session) async {
    final key = 'session_${session.id}';
    await _box.put(key, jsonEncode(session.toJson()));
    await _updateSessionList(session.id, add: true);
  }

  OpencodeSession? getSession(String sessionId) {
    final key = 'session_$sessionId';
    final data = _box.get(key);
    if (data == null) return null;
    
    try {
      final json = jsonDecode(data) as Map<String, dynamic>;
      return OpencodeSession.fromJson(json);
    } catch (e) {
      return null;
    }
  }

  Future<void> deleteSession(String sessionId) async {
    final key = 'session_$sessionId';
    await _box.delete(key);
    await _updateSessionList(sessionId, add: false);
  }

  List<OpencodeSession> getAllSessions() {
    final sessionIds = _box.get('session_list')?.split(',') ?? [];
    final sessions = <OpencodeSession>[];
    
    for (final id in sessionIds) {
      if (id.isEmpty) continue;
      final session = getSession(id);
      if (session != null) {
        sessions.add(session);
      }
    }
    
    sessions.sort((a, b) => b.updatedAt.compareTo(a.updatedAt));
    return sessions;
  }

  List<OpencodeSession> getSessionsByServer(String serverId) {
    return getAllSessions()
        .where((s) => s.serverId == serverId)
        .toList();
  }

  Future<void> _updateSessionList(String sessionId, {required bool add}) async {
    final listStr = _box.get('session_list') ?? '';
    final list = listStr.split(',').where((s) => s.isNotEmpty).toList();
    
    if (add) {
      if (!list.contains(sessionId)) {
        list.add(sessionId);
      }
    } else {
      list.remove(sessionId);
    }
    
    await _box.put('session_list', list.join(','));
  }

  Future<void> updateSessionMessages(OpencodeSession session) async {
    await saveSession(session);
  }

  Future<void> clearAllSessions() async {
    await _box.clear();
  }
}

/// Opencode 服务器配置存储
class OpencodeConfigStore {
  static const _boxName = 'opencode_configs';
  late final Box<String> _box;

  static final OpencodeConfigStore _instance = OpencodeConfigStore._internal();
  factory OpencodeConfigStore() => _instance;
  OpencodeConfigStore._internal();

  Future<void> init() async {
    _box = await Hive.openBox<String>(_boxName);
  }

  Future<void> saveConfig(OpencodeServerConfig config) async {
    final key = 'config_${config.serverId}';
    await _box.put(key, jsonEncode(config.toJson()));
  }

  OpencodeServerConfig getConfig(String serverId) {
    final key = 'config_$serverId';
    final data = _box.get(key);
    
    if (data == null) {
      return OpencodeServerConfig(serverId: serverId);
    }
    
    try {
      final json = jsonDecode(data) as Map<String, dynamic>;
      return OpencodeServerConfig.fromJson(json);
    } catch (e) {
      return OpencodeServerConfig(serverId: serverId);
    }
  }

  Future<void> deleteConfig(String serverId) async {
    final key = 'config_$serverId';
    await _box.delete(key);
  }
}

/// Opencode API 密钥存储
class OpencodeKeyStore {
  static const _boxName = 'opencode_keys';
  late final Box<String> _box;

  static final OpencodeKeyStore _instance = OpencodeKeyStore._internal();
  factory OpencodeKeyStore() => _instance;
  OpencodeKeyStore._internal();

  Future<void> init() async {
    _box = await Hive.openBox<String>(_boxName);
  }

  /// 保存服务器 API 密钥
  Future<void> saveServerKey(String serverId, {
    required String apiKey,
    String? description,
  }) async {
    final key = 'key_$serverId';
    final data = jsonEncode({
      'server_id': serverId,
      'api_key': apiKey,  // 注意：这里存储明文密钥
      'description': description,
      'updated_at': DateTime.now().toIso8601String(),
    });
    await _box.put(key, data);
  }

  /// 获取服务器密钥
  String? getServerKey(String serverId) {
    final key = 'key_$serverId';
    final data = _box.get(key);
    if (data == null) return null;
    
    try {
      final json = jsonDecode(data) as Map<String, dynamic>;
      return json['api_key'] as String?;
    } catch (e) {
      return null;
    }
  }

  /// 获取服务器密钥信息
  Map<String, dynamic>? getServerKeyInfo(String serverId) {
    final key = 'key_$serverId';
    final data = _box.get(key);
    if (data == null) return null;
    
    try {
      return jsonDecode(data) as Map<String, dynamic>;
    } catch (e) {
      return null;
    }
  }

  /// 删除服务器密钥
  Future<void> deleteServerKey(String serverId) async {
    final key = 'key_$serverId';
    await _box.delete(key);
  }
}