import 'dart:convert';
import 'package:get/get.dart';

import '../response/kr_node_list.dart';
import 'package:flutter/foundation.dart';

/// 表示出站项的模型类
class KROutboundItem {
  int selected = 0; // 是否选中（0=未选中，1=选中）
  String id = ""; // 标签
  String tag = ""; // 标签
  String serverAddr = ""; // 服务器地址

  /// 初始化配置
  Map<String, dynamic> config = {}; // 配置项

  String city = ""; // 城市
  String country = ""; // 国家

  double latitude = 0.0; // 节点纬度
  double latitudeCountry = 0.0; // 国家中心纬度
  double longitude = 0.0; // 节点经度
  double longitudeCountry = 0.0; // 国家中心经度
  String protocol = "";

  /// 延迟
  RxInt urlTestDelay = 0.obs;

  /// URL
  String url = "";
  @override
  String toString() {
    return 'KROutboundItem(tag: $tag, country: $country, delay: ${urlTestDelay.value}ms)';
  }
  /// 服务器类型

  /// 构造函数，接受 KrNodeListItem 对象并初始化 KROutboundItem
  KROutboundItem(KrNodeListItem nodeListItem) {
    id = nodeListItem.id.toString();
    protocol = nodeListItem.protocol;
    latitude = nodeListItem.latitude;
    latitudeCountry = nodeListItem.latitudeCountry;
    longitude = nodeListItem.longitude;
    longitudeCountry = nodeListItem.longitudeCountry;

    tag = nodeListItem.name; // 设置标签
    serverAddr = nodeListItem.serverAddr; // 设置服务器地址
    city = nodeListItem.city; // 设置城市
    country = nodeListItem.country; // 设置国家

    // 🔧 优先使用直接字段构建配置（新API格式）
    // 判断条件：如果有 port 和 serverAddr，说明是新格式
    if (nodeListItem.port > 0 && nodeListItem.serverAddr.isNotEmpty) {
      if (kDebugMode) {
        print('ℹ️ 节点 ${nodeListItem.name} 使用直接字段构建配置');
      }
      _buildConfigFromFields(nodeListItem);
      return;
    }

    // 兜底：尝试解析 config 字段（旧API格式）
    if (nodeListItem.config.isEmpty) {
      if (kDebugMode) {
        print('❌ 节点 ${nodeListItem.name} 缺少配置信息（无port或config）');
      }
      config = {};
      return;
    }

    late Map<String, dynamic> json;
    try {
      json = jsonDecode(nodeListItem.config) as Map<String, dynamic>;
    } catch (e) {
      if (kDebugMode) {
        print('❌ 节点 ${nodeListItem.name} 的 config 解析失败: $e，尝试使用直接字段');
      }
      if (kDebugMode) {
        print('📄 Config 内容: ${nodeListItem.config}');
      }
      _buildConfigFromFields(nodeListItem);
      return;
    }
    switch (nodeListItem.protocol) {
      case "vless":
        final securityConfig =
            json["security_config"] as Map<String, dynamic>? ?? {};
        
        // 智能设置 server_name
        String serverName = securityConfig["sni"] ?? "";
        if (serverName.isEmpty) {
          serverName = nodeListItem.serverAddr;
        }
        
        config = {
          "type": "vless",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": json["port"],
          "uuid": nodeListItem.uuid,
          if (json["flow"] != null && json["flow"] != "none")
            "flow": json["flow"],
          if (json["transport"] != null && json["transport"] != "tcp")
            "transport": _buildTransport(json),
          "tls": {
            "enabled": json["security"] == "tls",
            "server_name": serverName,
            "insecure": securityConfig["allow_insecure"] ?? true,
            "utls": {
              "enabled": true,
              "fingerprint": securityConfig["fingerprint"] ?? "chrome"
            }
          }
        };
        break;
      case "vmess":
        final securityConfig =
            json["security_config"] as Map<String, dynamic>? ?? {};
        
        // 智能设置 server_name
        String serverName = securityConfig["sni"] ?? "";
        if (serverName.isEmpty) {
          serverName = nodeListItem.serverAddr;
        }
        
        config = {
          "type": "vmess",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": json["port"],
          "uuid": nodeListItem.uuid,
          "alter_id": 0,
          "security": "auto",
          if (json["transport"] != null && json["transport"] != "tcp")
            "transport": _buildTransport(json),
          "tls": {
            "enabled": json["security"] == "tls",
            "server_name": serverName,
            "insecure": securityConfig["allow_insecure"] ?? true,
            "utls": {"enabled": true, "fingerprint": "chrome"}
          }
        };
        break;
      case "shadowsocks":
        config = {
          "type": "shadowsocks",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": json["port"],
          "method": json["method"],
          "password": nodeListItem.uuid
        };
        break;
      case "hysteria":
      case "hysteria2":
        // 后端的 "hysteria" 实际上是 Hysteria2 协议
        final securityConfig =
            json["security_config"] as Map<String, dynamic>? ?? {};
        config = {
          "type": "hysteria2",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": json["port"],
          "password": nodeListItem.uuid,
          "up_mbps": 100,
          "down_mbps": 100,
          "obfs": {
            "type": "salamander",
            "password": json["obfs_password"] ?? nodeListItem.uuid
          },
          "tls": {
            "enabled": true,
            "server_name": securityConfig["sni"] ?? "",
            "insecure": securityConfig["allow_insecure"] ?? true
          }
        };
        break;
      case "trojan":
        final securityConfig =
            json["security_config"] as Map<String, dynamic>? ?? {};
        
        // 智能设置 server_name
        String serverName = securityConfig["sni"] ?? "";
        if (serverName.isEmpty) {
          // 如果没有配置 SNI，使用服务器地址
          serverName = nodeListItem.serverAddr;
        }
        
        config = {
          "type": "trojan",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": json["port"],
          "password": nodeListItem.uuid,
          "tls": {
            "enabled": json["security"] == "tls",
            "server_name": serverName,
            "insecure": securityConfig["allow_insecure"] ?? true,
            "utls": {"enabled": true, "fingerprint": "chrome"}
          }
        };
        break;
    }

    // 检查 relayNode 是否为 JSON 字符串并解析
    if (nodeListItem.relayNode.isNotEmpty && nodeListItem.relayMode != "none") {
      final relayNodeJson = jsonDecode(nodeListItem.relayNode);
      if (relayNodeJson is List && nodeListItem.relayMode != "none") {
        // 随机选择一个元素
        final randomNode = (relayNodeJson..shuffle()).first;
        config["server"] = randomNode["host"]; // 提取 host
        config["server_port"] = randomNode["port"]; // 提取 port
      }
    }
    // 解析配置
  }

  /// 构建传输配置
  Map<String, dynamic> _buildTransport(Map<String, dynamic> json) {
    final transportType = json["transport"] as String?;
    final transportConfig =
        json["transport_config"] as Map<String, dynamic>? ?? {};

    switch (transportType) {
      case "ws":
        return {
          "type": "ws",
          "path": transportConfig["path"] ?? "/",
          if (transportConfig["host"] != null)
            "headers": {"Host": transportConfig["host"]}
        };
      case "grpc":
        return {
          "type": "grpc",
          "service_name": transportConfig["service_name"] ?? ""
        };
      case "http":
        return {
          "type": "http",
          "host": [transportConfig["host"] ?? ""],
          "path": transportConfig["path"] ?? "/"
        };
      default:
        return {};
    }
  }

  /// 直接从节点字段构建配置（新API格式）
  void _buildConfigFromFields(KrNodeListItem nodeListItem) {
    if (kDebugMode) {
      print('🔧 开始构建节点配置 - 协议: ${nodeListItem.protocol}, 名称: ${nodeListItem.name}');
    }
    if (kDebugMode) {
      print('📋 节点详细信息:');
    }
    if (kDebugMode) {
      print('  - serverAddr: ${nodeListItem.serverAddr}');
    }
    if (kDebugMode) {
      print('  - port: ${nodeListItem.port}');
    }
    if (kDebugMode) {
      print('  - uuid: ${nodeListItem.uuid}');
    }
    if (kDebugMode) {
      print('  - method: ${nodeListItem.method}');
    }
    if (kDebugMode) {
      print('  - config: ${nodeListItem.config}');
    }
    if (kDebugMode) {
      print('  - protocols: ${nodeListItem.protocols}');
    }

    // 🔧 尝试从 config 字段解析 transport 配置
    Map<String, dynamic>? transportConfig;
    Map<String, dynamic>? securityConfig;

    // 🔧 关键修复：优先从 protocols 字段解析配置
    if (nodeListItem.protocols.isNotEmpty) {
      try {
        final protocolsList = jsonDecode(nodeListItem.protocols) as List;
        if (kDebugMode) {
          print('📄 解析到 protocols 数组，共 ${protocolsList.length} 个协议');
        }

        // 查找匹配当前协议类型的配置
        Map<String, dynamic>? matchedProtocol;
        for (var protocol in protocolsList) {
          final protocolMap = protocol as Map<String, dynamic>;
          final type = protocolMap['type']?.toString().toLowerCase() ?? '';
          final enable = protocolMap['enable'] ?? true;

          if (kDebugMode) {
            print('  📋 协议: type=$type, enable=$enable');
          }

          // 匹配协议类型（注意 hysteria 和 hysteria2 都匹配 hysteria）
          if (type == nodeListItem.protocol.toLowerCase() ||
              (nodeListItem.protocol == 'hysteria' && type == 'hysteria2') ||
              (nodeListItem.protocol == 'hysteria2' && type == 'hysteria')) {
            matchedProtocol = protocolMap;
            if (kDebugMode) {
              print('  ✅ 找到匹配的协议配置: $type');
            }
            break;
          }
        }

        if (matchedProtocol != null) {
          // 提取 transport 配置
          if (matchedProtocol['network'] != null || matchedProtocol['transport'] != null) {
            final network = matchedProtocol['network'] ?? matchedProtocol['transport'];
            if (kDebugMode) {
              print('  📡 传输协议: $network');
            }

            if (network == 'ws' || network == 'websocket') {
              transportConfig = {
                'type': 'ws',
                'path': matchedProtocol['ws_path'] ?? matchedProtocol['path'] ?? '/',
              };
              final host = matchedProtocol['ws_host'] ?? matchedProtocol['host'];
              if (host != null && host.toString().isNotEmpty) {
                transportConfig['headers'] = {'Host': host.toString()};
              }
              if (kDebugMode) {
                print('  ✅ WebSocket transport: $transportConfig');
              }
            } else if (network == 'grpc') {
              transportConfig = {
                'type': 'grpc',
                'service_name': matchedProtocol['grpc_service_name'] ?? matchedProtocol['service_name'] ?? '',
              };
              if (kDebugMode) {
                print('  ✅ gRPC transport: $transportConfig');
              }
            } else if (network == 'http' || network == 'h2') {
              transportConfig = {
                'type': 'http',
                'host': [matchedProtocol['http_host'] ?? matchedProtocol['host'] ?? ''],
                'path': matchedProtocol['http_path'] ?? matchedProtocol['path'] ?? '/',
              };
              if (kDebugMode) {
                print('  ✅ HTTP transport: $transportConfig');
              }
            }
          }

          // 提取 security 配置
          if (matchedProtocol['tls'] != null || matchedProtocol['security'] != null) {
            // 🔧 关键修复：读取 security 字段判断是否启用 TLS
            final security = matchedProtocol['security']?.toString().toLowerCase() ?? '';
            final tlsEnabled = security == 'tls' || security == 'reality';

            securityConfig = {
              'tls_enabled': tlsEnabled,  // ← 新增：记录 TLS 是否启用
              'sni': matchedProtocol['sni'] ?? matchedProtocol['server_name'],
              'allow_insecure': matchedProtocol['allow_insecure'] ?? matchedProtocol['insecure'] ?? true,
              'fingerprint': matchedProtocol['fingerprint'] ?? 'chrome',
            };
            if (kDebugMode) {
              print('  ✅ Security config: security=$security, tls_enabled=$tlsEnabled, config=$securityConfig');
            }
          }
        }
      } catch (e) {
        if (kDebugMode) {
          print('⚠️ 解析 protocols 字段失败: $e');
        }
      }
    }

    // 兜底：尝试从 config 字段解析（旧API格式）
    if (transportConfig == null && nodeListItem.config.isNotEmpty) {
      try {
        final configJson = jsonDecode(nodeListItem.config) as Map<String, dynamic>;
        if (kDebugMode) {
          print('📄 解析到 config JSON: $configJson');
        }

        // 提取 transport 配置
        if (configJson['transport'] != null && configJson['transport'] != 'tcp') {
          transportConfig = _buildTransport(configJson);
          if (kDebugMode) {
            print('✅ 从 config 找到 transport 配置: $transportConfig');
          }
        }

        // 提取 security_config
        if (configJson['security_config'] != null) {
          securityConfig = configJson['security_config'] as Map<String, dynamic>;
          if (kDebugMode) {
            print('✅ 从 config 找到 security_config: $securityConfig');
          }
        }
      } catch (e) {
        if (kDebugMode) {
          print('⚠️ 解析 config 字段失败: $e');
        }
      }
    }

    switch (nodeListItem.protocol) {
      case "shadowsocks":
        // 优先使用 protocols 解析出来的 cipher，其次是 method 字段，最后才是默认值
        String finalMethod = nodeListItem.method.isNotEmpty
            ? nodeListItem.method
            : "2022-blake3-aes-256-gcm";

        config = {
          "type": "shadowsocks",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": nodeListItem.port,
          "method": finalMethod,
          "password": nodeListItem.uuid
        };
        if (kDebugMode) {
          print('✅ Shadowsocks 节点配置构建成功: ${nodeListItem.name}');
        }
        if (kDebugMode) {
          print('📄 使用加密方法: $finalMethod');
        }
        if (kDebugMode) {
          print('📄 完整配置: $config');
        }
        break;
      case "vless":
        // 判断是否为域名（非IP地址）
        final bool isDomain = !RegExp(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$')
            .hasMatch(nodeListItem.serverAddr);

        // 🔧 优先使用 security_config 中的 SNI
        String serverName = nodeListItem.serverAddr;
        if (securityConfig != null && securityConfig['sni'] != null && securityConfig['sni'].toString().isNotEmpty) {
          serverName = securityConfig['sni'].toString();
        }

        // 🔧 关键修复：根据 security_config 判断是否启用 TLS
        final bool vlessTlsEnabled = securityConfig?['tls_enabled'] ?? false;
        if (kDebugMode) {
          print('🔐 VLESS TLS 状态: enabled=$vlessTlsEnabled');
        }

        config = {
          "type": "vless",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": nodeListItem.port,
          "uuid": nodeListItem.uuid,
          if (transportConfig != null) "transport": transportConfig,
          if (vlessTlsEnabled) "tls": {
            "enabled": true,
            if (isDomain) "server_name": serverName,
            "insecure": securityConfig?['allow_insecure'] ?? true,
            "utls": {
              "enabled": true,
              "fingerprint": securityConfig?['fingerprint'] ?? "chrome"
            }
          }
        };
        if (kDebugMode) {
          print('✅ VLESS 节点配置构建成功: ${nodeListItem.name}');
        }
        if (kDebugMode) {
          print('📄 完整配置: $config');
        }
        break;
      case "vmess":
        // 判断是否为域名（非IP地址）
        final bool isDomain = !RegExp(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$')
            .hasMatch(nodeListItem.serverAddr);

        // 🔧 优先使用 security_config 中的 SNI
        String serverName = nodeListItem.serverAddr;
        if (securityConfig != null && securityConfig['sni'] != null && securityConfig['sni'].toString().isNotEmpty) {
          serverName = securityConfig['sni'].toString();
        }

        // 🔧 关键修复：根据 security_config 判断是否启用 TLS
        final bool tlsEnabled = securityConfig?['tls_enabled'] ?? false;
        if (kDebugMode) {
          print('🔐 TLS 状态: enabled=$tlsEnabled');
        }

        config = {
          "type": "vmess",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": nodeListItem.port,
          "uuid": nodeListItem.uuid,
          "alter_id": 0,
          "security": "auto",
          if (transportConfig != null) "transport": transportConfig,
          if (tlsEnabled) "tls": {
            "enabled": true,
            if (isDomain) "server_name": serverName,
            "insecure": securityConfig?['allow_insecure'] ?? true,
            "utls": {
              "enabled": true,
              "fingerprint": securityConfig?['fingerprint'] ?? "chrome"
            }
          }
        };
        if (kDebugMode) {
          print('✅ VMess 节点配置构建成功: ${nodeListItem.name}');
        }
        if (kDebugMode) {
          print('📄 完整配置: $config');
        }
        break;
      case "trojan":
        // 判断是否为域名（非IP地址）
        final bool isDomain = !RegExp(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$')
            .hasMatch(nodeListItem.serverAddr);

        // 🔧 优先使用 security_config 中的 SNI
        String serverName = nodeListItem.serverAddr;
        if (securityConfig != null && securityConfig['sni'] != null && securityConfig['sni'].toString().isNotEmpty) {
          serverName = securityConfig['sni'].toString();
        }

        config = {
          "type": "trojan",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": nodeListItem.port,
          "password": nodeListItem.uuid,
          if (transportConfig != null) "transport": transportConfig,
          "tls": {
            "enabled": true,
            if (isDomain) "server_name": serverName,
            "insecure": securityConfig?['allow_insecure'] ?? true,
            "utls": {
              "enabled": true,
              "fingerprint": securityConfig?['fingerprint'] ?? "chrome"
            }
          }
        };
        if (kDebugMode) {
          print('✅ Trojan 节点配置构建成功: ${nodeListItem.name}');
        }
        if (kDebugMode) {
          print('📄 完整配置: $config');
        }
        break;
      case "hysteria":
      case "hysteria2":
        // 后端的 "hysteria" 实际上是 Hysteria2 协议
        if (kDebugMode) {
          print('🔍 构建 Hysteria2 节点: ${nodeListItem.name}');
        }
        if (kDebugMode) {
          print('  - serverAddr: ${nodeListItem.serverAddr}');
        }
        if (kDebugMode) {
          print('  - port: ${nodeListItem.port}');
        }
        if (kDebugMode) {
          print('  - uuid: ${nodeListItem.uuid}');
        }

        //判断是否为域名
        final bool isDomain = !RegExp(r'^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$')
            .hasMatch(nodeListItem.serverAddr);

        config = {
          "type": "hysteria2",
          "tag": nodeListItem.name,
          "server": nodeListItem.serverAddr,
          "server_port": nodeListItem.port,
          "password": nodeListItem.uuid,
          "tls": {
            "enabled": true,
            if (isDomain) "server_name": nodeListItem.serverAddr,
          }
        };
        if (kDebugMode) {
          print('✅ Hysteria2 节点配置构建成功');
        }
        if (kDebugMode) {
          print('📄 完整配置: ${jsonEncode(config)}');
        }
        break;
      default:
        if (kDebugMode) {
          print('⚠️ 不支持的协议类型: ${nodeListItem.protocol}');
        }
        config = {};
    }
  }
}