"""
Android NsdManager API — NsdManager, NsdServiceInfo, DiscoveryListener, RegistrationListener, ResolveListener
方法签名完全对齐 Android SDK
"""

from __future__ import annotations

import os
import sys
import socket
import uuid
import threading
from typing import Any, Dict, List, Optional, Set, Tuple, Callable

from .._core import Stub, AndroidOnlyError
from ..java.lang import RuntimeException

IllegalArgumentException = type("IllegalArgumentException", (RuntimeException,), {})


# ═══════════════════════════════════════════════════════════════
# 常量
# ═══════════════════════════════════════════════════════════════

# PROTOCOL_* 常量
PROTOCOL_DNS_SD = 0

# FAILURE_* 常量
FAILURE_ALREADY_ACTIVE = 3
FAILURE_INTERNAL_ERROR = 0
FAILURE_MAX_LIMIT = 4
FAILURE_SERVICE_NOT_FOUND = 1
FAILURE_SERVICE_NOT_RUNNING = 2

# DNS_* 常量
DNS_A = 1
DNS_AAAA = 28
DNS_CNAME = 5
DNS_HINFO = 13
DNS_MX = 15
DNS_NS = 2
DNS_PTR = 12
DNS_SOA = 6
DNS_SRV = 33
DNS_TXT = 16
DNS_WKS = 11
DNS_ANY = 255

# SERVICE_TYPE 常量
SERVICE_TYPE_HTTP = "_http._tcp"
SERVICE_TYPE_HTTPS = "_https._tcp"
SERVICE_TYPE_FTP = "_ftp._tcp"
SERVICE_TYPE_SSH = "_ssh._tcp"
SERVICE_TYPE_SMTP = "_smtp._tcp"
SERVICE_TYPE_IMAP = "_imap._tcp"
SERVICE_TYPE_AIRPLAY = "_airplay._tcp"
SERVICE_TYPE_GOOGLECAST = "_googlecast._tcp"
SERVICE_TYPE_DEVICE_INFO = "_device-info._tcp"
SERVICE_TYPE_PRINTER = "_printer._tcp"
SERVICE_TYPE_SCANNER = "_scanner._tcp"


# ═══════════════════════════════════════════════════════════════
# NsdServiceInfo
# ═══════════════════════════════════════════════════════════════

class NsdServiceInfo(Stub):
    """NsdServiceInfo — NSD 服务信息"""

    def __init__(self):
        super().__init__()
        self._service_name: Optional[str] = None
        self._service_type: Optional[str] = None
        self._host: Optional[str] = None
        self._port: int = 0
        self._txt_records: Dict[str, bytes] = {}
        self._attributes: Dict[str, str] = {}
        self._network: Optional[Any] = None
        self._interface_index = 0
        self._service_id = str(uuid.uuid4())
        self._ttl = 120
        self._priority = 0
        self._weight = 0
        self._is_resolved = False
        self._addresses: List[str] = []

    def getServiceName(self) -> Optional[str]:
        return self._service_name

    def setServiceName(self, serviceName: str) -> None:
        self._service_name = serviceName

    def getServiceType(self) -> Optional[str]:
        return self._service_type

    def setServiceType(self, serviceType: str) -> None:
        self._service_type = serviceType

    def getHost(self) -> Optional[str]:
        return self._host

    def setHost(self, host: str) -> None:
        self._host = host

    def getPort(self) -> int:
        return self._port

    def setPort(self, port: int) -> None:
        self._port = port

    def getTxtRecords(self) -> Dict[str, bytes]:
        return dict(self._txt_records)

    def setTxtRecords(self, txtRecords: Dict[str, bytes]) -> None:
        self._txt_records = dict(txtRecords)

    def getAttributes(self) -> Dict[str, str]:
        return dict(self._attributes)

    def setAttribute(self, key: str, value: str) -> None:
        self._attributes[key] = value

    def removeAttribute(self, key: str) -> None:
        self._attributes.pop(key, None)

    def getNetwork(self) -> Optional[Any]:
        return self._network

    def setNetwork(self, network: Any) -> None:
        self._network = network

    def getInterfaceIndex(self) -> int:
        return self._interface_index

    def setInterfaceIndex(self, index: int) -> None:
        self._interface_index = index

    def getHostAddresses(self) -> List[str]:
        return list(self._addresses)

    def addHostAddress(self, address: str) -> None:
        if address not in self._addresses:
            self._addresses.append(address)

    def getServiceId(self) -> str:
        return self._service_id

    def getTtl(self) -> int:
        return self._ttl

    def setTtl(self, ttl: int) -> None:
        self._ttl = ttl

    def getPriority(self) -> int:
        return self._priority

    def setPriority(self, priority: int) -> None:
        self._priority = priority

    def getWeight(self) -> int:
        return self._weight

    def setWeight(self, weight: int) -> None:
        self._weight = weight

    def isResolved(self) -> bool:
        return self._is_resolved

    def setResolved(self, resolved: bool) -> None:
        self._is_resolved = resolved

    def getHostAddress(self) -> Optional[str]:
        if self._addresses:
            return self._addresses[0]
        return self._host

    def toString(self) -> str:
        return (
            f"NsdServiceInfo(name={self._service_name}, "
            f"type={self._service_type}, "
            f"host={self._host}, "
            f"port={self._port})"
        )


# ═══════════════════════════════════════════════════════════════
# NsdManager 内部 Listener 类
# ═══════════════════════════════════════════════════════════════

class NsdManagerDiscoveryListener(Stub):
    """NsdManager.DiscoveryListener — 服务发现监听器"""

    def __init__(self):
        super().__init__()

    def onDiscoveryStarted(self, serviceType: str) -> None:
        pass

    def onDiscoveryStopped(self, serviceType: str) -> None:
        pass

    def onServiceFound(self, serviceInfo: "NsdServiceInfo") -> None:
        pass

    def onServiceLost(self, serviceInfo: "NsdServiceInfo") -> None:
        pass

    def onStartDiscoveryFailed(self, serviceType: str, errorCode: int) -> None:
        pass

    def onStopDiscoveryFailed(self, serviceType: str, errorCode: int) -> None:
        pass

    def onDiscoveryStopped(self, serviceType: str) -> None:
        pass

    def toString(self) -> str:
        return "NsdManager.DiscoveryListener"


class NsdManagerRegistrationListener(Stub):
    """NsdManager.RegistrationListener — 服务注册监听器"""

    def __init__(self):
        super().__init__()

    def onRegistrationFailed(self, serviceInfo: "NsdServiceInfo", errorCode: int) -> None:
        pass

    def onUnregistrationFailed(self, serviceInfo: "NsdServiceInfo", errorCode: int) -> None:
        pass

    def onServiceRegistered(self, serviceInfo: "NsdServiceInfo") -> None:
        pass

    def onServiceUnregistered(self, serviceInfo: "NsdServiceInfo") -> None:
        pass

    def toString(self) -> str:
        return "NsdManager.RegistrationListener"


class NsdManagerResolveListener(Stub):
    """NsdManager.ResolveListener — 服务解析监听器"""

    def __init__(self):
        super().__init__()

    def onResolveFailed(self, serviceInfo: "NsdServiceInfo", errorCode: int) -> None:
        pass

    def onServiceResolved(self, serviceInfo: "NsdServiceInfo") -> None:
        pass

    def toString(self) -> str:
        return "NsdManager.ResolveListener"


# ═══════════════════════════════════════════════════════════════
# NsdManager
# ═══════════════════════════════════════════════════════════════

class NsdManager(Stub):
    """NsdManager — 网络服务发现管理器 (桌面存根)"""

    PROTOCOL_DNS_SD = PROTOCOL_DNS_SD

    FAILURE_ALREADY_ACTIVE = FAILURE_ALREADY_ACTIVE
    FAILURE_INTERNAL_ERROR = FAILURE_INTERNAL_ERROR
    FAILURE_MAX_LIMIT = FAILURE_MAX_LIMIT
    FAILURE_SERVICE_NOT_FOUND = FAILURE_SERVICE_NOT_FOUND
    FAILURE_SERVICE_NOT_RUNNING = FAILURE_SERVICE_NOT_RUNNING

    DiscoveryListener = NsdManagerDiscoveryListener
    RegistrationListener = NsdManagerRegistrationListener
    ResolveListener = NsdManagerResolveListener

    def __init__(self, context: Any = None):
        super().__init__()
        self._context = context
        self._lock = threading.Lock()
        self._registered_services: Dict[str, NsdServiceInfo] = {}
        self._discovery_listeners: Dict[str, NsdManagerDiscoveryListener] = {}
        self._discovery_active: Set[str] = set()
        self._resolved_services: Dict[str, NsdServiceInfo] = {}
        self._discovered_services: Dict[str, List[NsdServiceInfo]] = {}
        self._network_interface: Optional[str] = None
        self._socket_family = socket.AF_INET
        self._discovery_timeout = 5000
        self._is_available = True

    def discoverServices(
        self, serviceType: str, protocolType: int, listener: NsdManagerDiscoveryListener
    ) -> None:
        """发现指定类型的服务"""
        with self._lock:
            if serviceType in self._discovery_active:
                listener.onStartDiscoveryFailed(serviceType, FAILURE_ALREADY_ACTIVE)
                return
            self._discovery_active.add(serviceType)
            self._discovery_listeners[serviceType] = listener
            listener.onDiscoveryStarted(serviceType)
            # 模拟发现
            for srv_id, info in self._registered_services.items():
                if info.getServiceType() == serviceType:
                    listener.onServiceFound(info)

    def stopServiceDiscovery(self, listener: NsdManagerDiscoveryListener) -> None:
        """停止服务发现"""
        with self._lock:
            to_remove = []
            for stype, lst in self._discovery_listeners.items():
                if lst is listener:
                    to_remove.append(stype)
            for stype in to_remove:
                self._discovery_active.discard(stype)
                del self._discovery_listeners[stype]
                listener.onDiscoveryStopped(stype)

    def registerService(
        self, serviceInfo: NsdServiceInfo, protocolType: int, listener: NsdManagerRegistrationListener
    ) -> None:
        """注册本地服务"""
        with self._lock:
            srv_id = f"{serviceInfo.getServiceName()}:{serviceInfo.getServiceType()}"
            if srv_id in self._registered_services:
                listener.onRegistrationFailed(serviceInfo, FAILURE_ALREADY_ACTIVE)
                return
            self._registered_services[srv_id] = serviceInfo
            listener.onServiceRegistered(serviceInfo)

    def unregisterService(self, listener: NsdManagerRegistrationListener) -> None:
        """注销本地服务"""
        with self._lock:
            to_remove = []
            for srv_id, info in self._registered_services.items():
                to_remove.append(srv_id)
            for srv_id in to_remove:
                info = self._registered_services.pop(srv_id)
                listener.onServiceUnregistered(info)

    def resolveService(
        self, serviceInfo: NsdServiceInfo, listener: NsdManagerResolveListener
    ) -> None:
        """解析服务（获取主机和端口）"""
        with self._lock:
            srv_id = f"{serviceInfo.getServiceName()}:{serviceInfo.getServiceType()}"
            if srv_id in self._registered_services:
                resolved = self._registered_services[srv_id]
                resolved.setResolved(True)
                if not resolved.getHost():
                    resolved.setHost("127.0.0.1")
                if resolved.getPort() == 0:
                    resolved.setPort(8080)
                self._resolved_services[srv_id] = resolved
                listener.onServiceResolved(resolved)
            else:
                listener.onResolveFailed(serviceInfo, FAILURE_SERVICE_NOT_FOUND)

    def getDiscoveredServices(self, serviceType: str) -> List[NsdServiceInfo]:
        """获取已发现的服务列表"""
        with self._lock:
            return [
                info for info in self._registered_services.values()
                if info.getServiceType() == serviceType
            ]

    def getRegisteredServices(self) -> List[NsdServiceInfo]:
        """获取所有已注册的服务"""
        with self._lock:
            return list(self._registered_services.values())

    def isDiscoveryActive(self, serviceType: str) -> bool:
        """检查指定类型的发现是否活跃"""
        with self._lock:
            return serviceType in self._discovery_active

    def setNetworkInterface(self, iface: str) -> None:
        """设置网络接口"""
        self._network_interface = iface

    def getNetworkInterface(self) -> Optional[str]:
        return self._network_interface

    def setDiscoveryTimeout(self, timeoutMs: int) -> None:
        self._discovery_timeout = timeoutMs

    def getDiscoveryTimeout(self) -> int:
        return self._discovery_timeout

    def isAvailable(self) -> bool:
        return self._is_available

    def destroy(self) -> None:
        with self._lock:
            self._discovery_active.clear()
            self._discovery_listeners.clear()
            self._registered_services.clear()
            self._resolved_services.clear()
            self._is_available = False

    def toString(self) -> str:
        with self._lock:
            return (
                f"NsdManager(registered={len(self._registered_services)}, "
                f"active_discoveries={len(self._discovery_active)})"
            )

    # ═══════════════════════════════════════════════════════════
    # NsdManager 补充功能
    # ═══════════════════════════════════════════════════════════

    def getServiceInfo(self, serviceName: str) -> Optional[NsdServiceInfo]:
        """通过名称获取已注册的服务信息"""
        with self._lock:
            for srv_id, info in self._registered_services.items():
                if info.getServiceName() == serviceName:
                    return info
            return None

    def removeService(self, serviceName: str) -> bool:
        """移除已注册的服务"""
        with self._lock:
            to_remove = [
                srv_id for srv_id, info in self._registered_services.items()
                if info.getServiceName() == serviceName
            ]
            for srv_id in to_remove:
                del self._registered_services[srv_id]
            return len(to_remove) > 0

    def getResolvedService(self, serviceName: str) -> Optional[NsdServiceInfo]:
        """获取已解析的服务"""
        with self._lock:
            for srv_id, info in self._resolved_services.items():
                if info.getServiceName() == serviceName:
                    return info
            return None

    def getResolvedServices(self) -> List[NsdServiceInfo]:
        """获取所有已解析的服务"""
        with self._lock:
            return list(self._resolved_services.values())

    def getAllDiscoveredServices(self) -> List[NsdServiceInfo]:
        """获取所有已发现的服务"""
        with self._lock:
            return [
                info for info in self._registered_services.values()
                if info.isResolved()
            ]

    def getActiveDiscoveryCount(self) -> int:
        """获取活跃发现数量"""
        with self._lock:
            return len(self._discovery_active)

    def getActiveDiscoveryTypes(self) -> List[str]:
        """获取正在发现的服务类型列表"""
        with self._lock:
            return list(self._discovery_active)

    def createServiceInfo(
        self, serviceName: str, serviceType: str, port: int = 0
    ) -> NsdServiceInfo:
        """创建服务信息对象"""
        info = NsdServiceInfo()
        info.setServiceName(serviceName)
        info.setServiceType(serviceType)
        info.setPort(port)
        info.setHost("127.0.0.1")
        return info


class NsdServiceInfoBuilder(Stub):
    """NsdServiceInfo.Builder — 服务信息构建器"""

    def __init__(self):
        super().__init__()
        self._info = NsdServiceInfo()

    def setServiceName(self, name: str) -> "NsdServiceInfoBuilder":
        self._info.setServiceName(name)
        return self

    def setServiceType(self, serviceType: str) -> "NsdServiceInfoBuilder":
        self._info.setServiceType(serviceType)
        return self

    def setHost(self, host: str) -> "NsdServiceInfoBuilder":
        self._info.setHost(host)
        return self

    def setPort(self, port: int) -> "NsdServiceInfoBuilder":
        self._info.setPort(port)
        return self

    def setTxtRecords(self, records: Dict[str, bytes]) -> "NsdServiceInfoBuilder":
        self._info.setTxtRecords(records)
        return self

    def addAttribute(self, key: str, value: str) -> "NsdServiceInfoBuilder":
        self._info.setAttribute(key, value)
        return self

    def setNetwork(self, network: Any) -> "NsdServiceInfoBuilder":
        self._info.setNetwork(network)
        return self

    def build(self) -> NsdServiceInfo:
        return self._info

    def toString(self) -> str:
        return f"NsdServiceInfoBuilder(name={self._info.getServiceName()})"