#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import logging
import asyncio
import inspect
from typing import Dict, List, Callable, Any
import json

logger = logging.getLogger(__name__)

class PluginNetworkBridge:
    """插件网络桥接 - 简化插件的网络交互"""
    
    def __init__(self, plugin_name: str, internet_service, plugin_bridge):
        self.plugin_name = plugin_name
        self.internet_service = internet_service
        self.plugin_bridge = plugin_bridge
        self.registered_routes: List[Dict] = []
        self.websocket_handlers: List[Dict] = []
        
        logger.debug(f"插件网络桥接初始化: {plugin_name}")
    
    def is_network_available(self):
        """检查网络服务是否可用"""
        return self.internet_service is not None and hasattr(self.internet_service, 'register_plugin_route')
    
    async def register_command_routes(self, plugin_instance, require_auth: bool = True):
        """自动扫描插件 @plugin_command/cmd_* 方法并注册 REST 端点

        每个命令 → POST /api/plugin/{cmd_name}
        参数以 JSON body 传入: {"args": [...]}
        返回: {"ok": true, "result": "..."} 或 {"ok": false, "error": "..."}
        """
        try:
            import inspect

            registered = 0
            for attr_name in dir(plugin_instance):
                if attr_name.startswith("__"):
                    continue

                method = getattr(plugin_instance, attr_name, None)
                if not callable(method):
                    continue

                # 识别 @plugin_command 装饰或 cmd_ 前缀
                cmd_name = None
                if hasattr(method, "_is_plugin_command"):
                    cmd_name = getattr(method, "_command_name", attr_name[4:] if attr_name.startswith("cmd_") else attr_name)
                elif attr_name.startswith("cmd_"):
                    cmd_name = attr_name[4:]

                if not cmd_name:
                    continue

                route_path = f"/api/plugin/{cmd_name}"

                # 创建闭包捕获 method 和 cmd_name
                async def _make_handler(_method=method, _cmd_name=cmd_name):
                    from aiohttp import web

                    async def _handler(request):
                        try:
                            body = {}
                            try:
                                body = await request.json()
                            except Exception:
                                pass
                            args = body.get("args", [])
                            if isinstance(args, str):
                                args = [args]
                            kwargs = body.get("kwargs", {})
                            result = _method(*args, **kwargs)
                            if asyncio.iscoroutine(result):
                                result = await result
                            return web.json_response({"ok": True, "result": str(result)})
                        except Exception as e:
                            logger.error(f"命令 {_cmd_name} REST 调用失败: {e}")
                            return web.json_response({"ok": False, "error": str(e)}, status=500)

                    return _handler

                await self.register_http_route(
                    route_path, await _make_handler(),
                    methods=["POST"], require_auth=require_auth,
                )
                logger.debug(f"  自动暴露 REST: POST {route_path}")
                registered += 1

            if registered:
                logger.info(f"插件 {self.plugin_name} 自动暴露 {registered} 个命令 REST 端点")

        except Exception as e:
            logger.warning(f"自动注册命令路由失败 {self.plugin_name}: {e}")

    async def register_http_route(self, route_path: str, handler: Callable,
                                methods: List[str] = ["GET"], require_auth: bool = True):
        """注册HTTP路由"""
        try:
            if not self.is_network_available():
                logger.warning("网络服务不可用，跳过HTTP路由注册")
                return
            
            await self.internet_service.register_plugin_route(
                self.plugin_name, route_path, handler, methods, require_auth
            )
            
            self.registered_routes.append({
                'type': 'http',
                'path': route_path,
                'methods': methods,
                'require_auth': require_auth
            })
            
            logger.debug(f"插件 {self.plugin_name} 注册HTTP路由: {route_path}")
            
        except Exception as e:
            logger.error(f"注册HTTP路由时出错: {str(e)}")
            # 不抛出异常，让插件继续运行
    
    async def register_websocket(self, ws_path: str, handler: Callable, require_auth: bool = True):
        """注册WebSocket处理器"""
        try:
            if not self.is_network_available():
                logger.warning("网络服务不可用，跳过WebSocket注册")
                return
            
            await self.internet_service.register_plugin_websocket(
                self.plugin_name, ws_path, handler, require_auth
            )
            
            self.websocket_handlers.append({
                'path': ws_path,
                'require_auth': require_auth
            })
            
            logger.debug(f"插件 {self.plugin_name} 注册WebSocket: {ws_path}")
            
        except Exception as e:
            logger.error(f"注册WebSocket时出错: {str(e)}")
            # 不抛出异常，让插件继续运行
    
    async def broadcast_websocket(self, message: Dict):
        """向插件的所有WebSocket连接广播消息"""
        try:
            if not self.internet_service:
                logger.warning("网络服务不可用，无法广播消息")
                return
            
            await self.internet_service.broadcast_to_websockets(self.plugin_name, message)
            logger.debug(f"插件 {self.plugin_name} WebSocket广播: {len(message)} 字节")
        except Exception as e:
            logger.error(f"WebSocket广播时出错: {str(e)}")
    
    async def send_data_to_client(self, client_id: str, message: Dict):
        """向特定客户端发送数据"""
        try:
            # 这里可以实现更精确的客户端消息发送
            # 目前先使用广播
            message['target_client'] = client_id
            await self.broadcast_websocket(message)
            
        except Exception as e:
            logger.error(f"发送数据到客户端时出错: {str(e)}")
    
    def get_network_info(self) -> Dict[str, Any]:
        """获取网络配置信息"""
        if not self.internet_service:
            return {
                'plugin_name': self.plugin_name,
                'registered_routes': [],
                'websocket_handlers': [],
                'base_url': '网络服务不可用'
            }
        
        return {
            'plugin_name': self.plugin_name,
            'registered_routes': self.registered_routes,
            'websocket_handlers': self.websocket_handlers,
            'base_url': f"http://{self.internet_service.http_host}:{self.internet_service.http_port}/{self.plugin_name}"
        }
    
    async def setup_data_transfer(self, data_handler: Callable):
        """设置跨端数据传输"""
        try:
            # 订阅网络数据接收事件
            self.plugin_bridge.subscribe_plugin(
                self.plugin_name,
                "network.data.receive",
                data_handler
            )
            
            logger.debug(f"插件 {self.plugin_name} 设置跨端数据传输")
            
        except Exception as e:
            logger.error(f"设置数据传输时出错: {str(e)}")