mirror of
https://github.com/zhayujie/chatgpt-on-wechat.git
synced 2026-03-02 16:29:20 +08:00
303 lines
11 KiB
Python
303 lines
11 KiB
Python
import sys
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import time
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import web
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import json
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import uuid
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from queue import Queue, Empty
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from bridge.context import *
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from bridge.reply import Reply, ReplyType
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from channel.chat_channel import ChatChannel, check_prefix
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from channel.chat_message import ChatMessage
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from common.log import logger
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from common.singleton import singleton
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from config import conf
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import os
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import mimetypes # 添加这行来处理MIME类型
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import threading
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import logging
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class WebMessage(ChatMessage):
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def __init__(
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self,
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msg_id,
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content,
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ctype=ContextType.TEXT,
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from_user_id="User",
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to_user_id="Chatgpt",
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other_user_id="Chatgpt",
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):
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self.msg_id = msg_id
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self.ctype = ctype
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self.content = content
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self.from_user_id = from_user_id
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self.to_user_id = to_user_id
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self.other_user_id = other_user_id
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@singleton
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class WebChannel(ChatChannel):
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NOT_SUPPORT_REPLYTYPE = [ReplyType.VOICE]
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_instance = None
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# def __new__(cls):
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# if cls._instance is None:
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# cls._instance = super(WebChannel, cls).__new__(cls)
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# return cls._instance
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def __init__(self):
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super().__init__()
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self.msg_id_counter = 0 # 添加消息ID计数器
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self.session_queues = {} # 存储session_id到队列的映射
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self.request_to_session = {} # 存储request_id到session_id的映射
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def _generate_msg_id(self):
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"""生成唯一的消息ID"""
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self.msg_id_counter += 1
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return str(int(time.time())) + str(self.msg_id_counter)
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def _generate_request_id(self):
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"""生成唯一的请求ID"""
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return str(uuid.uuid4())
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def send(self, reply: Reply, context: Context):
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try:
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if reply.type in self.NOT_SUPPORT_REPLYTYPE:
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logger.warning(f"Web channel doesn't support {reply.type} yet")
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return
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if reply.type == ReplyType.IMAGE_URL:
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time.sleep(0.5)
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# 获取请求ID和会话ID
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request_id = context.get("request_id", None)
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if not request_id:
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logger.error("No request_id found in context, cannot send message")
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return
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# 通过request_id获取session_id
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session_id = self.request_to_session.get(request_id)
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if not session_id:
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logger.error(f"No session_id found for request {request_id}")
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return
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# 检查是否有会话队列
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if session_id in self.session_queues:
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# 创建响应数据，包含请求ID以区分不同请求的响应
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response_data = {
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"type": str(reply.type),
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"content": reply.content,
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"timestamp": time.time(),
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"request_id": request_id
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}
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self.session_queues[session_id].put(response_data)
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logger.debug(f"Response sent to queue for session {session_id}, request {request_id}")
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else:
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logger.warning(f"No response queue found for session {session_id}, response dropped")
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except Exception as e:
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logger.error(f"Error in send method: {e}")
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def post_message(self):
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"""
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Handle incoming messages from users via POST request.
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Returns a request_id for tracking this specific request.
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"""
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try:
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data = web.data() # 获取原始POST数据
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json_data = json.loads(data)
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session_id = json_data.get('session_id', f'session_{int(time.time())}')
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prompt = json_data.get('message', '')
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# 生成请求ID
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request_id = self._generate_request_id()
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# 将请求ID与会话ID关联
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self.request_to_session[request_id] = session_id
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# 确保会话队列存在
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if session_id not in self.session_queues:
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self.session_queues[session_id] = Queue()
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# Web channel 不需要前缀，确保消息能通过前缀检查
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trigger_prefixs = conf().get("single_chat_prefix", [""])
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if check_prefix(prompt, trigger_prefixs) is None:
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# 如果没有匹配到前缀，给消息加上第一个前缀
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if trigger_prefixs:
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prompt = trigger_prefixs[0] + prompt
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logger.debug(f"[WebChannel] Added prefix to message: {prompt}")
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# 创建消息对象
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msg = WebMessage(self._generate_msg_id(), prompt)
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msg.from_user_id = session_id # 使用会话ID作为用户ID
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# 创建上下文，明确指定 isgroup=False
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context = self._compose_context(ContextType.TEXT, prompt, msg=msg, isgroup=False)
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# 检查 context 是否为 None（可能被插件过滤等）
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if context is None:
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logger.warning(f"[WebChannel] Context is None for session {session_id}, message may be filtered")
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return json.dumps({"status": "error", "message": "Message was filtered"})
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# 覆盖必要的字段（_compose_context 会设置默认值，但我们需要使用实际的 session_id）
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context["session_id"] = session_id
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context["receiver"] = session_id
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context["request_id"] = request_id
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# 异步处理消息 - 只传递上下文
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threading.Thread(target=self.produce, args=(context,)).start()
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# 返回请求ID
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return json.dumps({"status": "success", "request_id": request_id})
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except Exception as e:
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logger.error(f"Error processing message: {e}")
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return json.dumps({"status": "error", "message": str(e)})
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def poll_response(self):
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"""
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Poll for responses using the session_id.
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"""
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try:
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data = web.data()
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json_data = json.loads(data)
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session_id = json_data.get('session_id')
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if not session_id or session_id not in self.session_queues:
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return json.dumps({"status": "error", "message": "Invalid session ID"})
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# 尝试从队列获取响应，不等待
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try:
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# 使用peek而不是get，这样如果前端没有成功处理，下次还能获取到
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response = self.session_queues[session_id].get(block=False)
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# 返回响应，包含请求ID以区分不同请求
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return json.dumps({
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"status": "success",
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"has_content": True,
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"content": response["content"],
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"request_id": response["request_id"],
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"timestamp": response["timestamp"]
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})
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except Empty:
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# 没有新响应
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return json.dumps({"status": "success", "has_content": False})
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except Exception as e:
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logger.error(f"Error polling response: {e}")
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return json.dumps({"status": "error", "message": str(e)})
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def chat_page(self):
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"""Serve the chat HTML page."""
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file_path = os.path.join(os.path.dirname(__file__), 'chat.html') # 使用绝对路径
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with open(file_path, 'r', encoding='utf-8') as f:
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return f.read()
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def startup(self):
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port = conf().get("web_port", 9899)
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logger.info("""[WebChannel] 当前channel为web，可修改 config.json 配置文件中的 channel_type 字段进行切换。全部可用类型为：
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1. web: 网页
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2. terminal: 终端
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3. feishu: 飞书
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4. dingtalk: 钉钉
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5. wechatcom_app: 企微自建应用
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6. wechatmp: 个人公众号
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7. wechatmp_service: 企业公众号""")
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logger.info(f"✅ Web对话网页已运行, 请使用浏览器访问 http://localhost:{port}/chat (本地运行) 或 http://ip:{port}/chat (服务器运行)")
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# 确保静态文件目录存在
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static_dir = os.path.join(os.path.dirname(__file__), 'static')
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if not os.path.exists(static_dir):
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os.makedirs(static_dir)
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logger.info(f"Created static directory: {static_dir}")
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urls = (
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'/', 'RootHandler', # 添加根路径处理器
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'/message', 'MessageHandler',
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'/poll', 'PollHandler', # 添加轮询处理器
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'/chat', 'ChatHandler',
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'/assets/(.*)', 'AssetsHandler', # 匹配 /assets/任何路径
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)
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app = web.application(urls, globals(), autoreload=False)
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# 完全禁用web.py的HTTP日志输出
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# 创建一个空的日志处理函数
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def null_log_function(status, environ):
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pass
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# 替换web.py的日志函数
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web.httpserver.LogMiddleware.log = lambda self, status, environ: None
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# 配置web.py的日志级别为ERROR
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logging.getLogger("web").setLevel(logging.ERROR)
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logging.getLogger("web.httpserver").setLevel(logging.ERROR)
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# 启动服务器
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web.httpserver.runsimple(app.wsgifunc(), ("0.0.0.0", port))
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class RootHandler:
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def GET(self):
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# 重定向到/chat
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raise web.seeother('/chat')
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class MessageHandler:
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def POST(self):
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return WebChannel().post_message()
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class PollHandler:
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def POST(self):
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return WebChannel().poll_response()
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class ChatHandler:
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def GET(self):
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# 正常返回聊天页面
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file_path = os.path.join(os.path.dirname(__file__), 'chat.html')
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with open(file_path, 'r', encoding='utf-8') as f:
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return f.read()
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class AssetsHandler:
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def GET(self, file_path): # 修改默认参数
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try:
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# 如果请求是/static/，需要处理
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if file_path == '':
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# 返回目录列表...
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pass
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# 获取当前文件的绝对路径
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current_dir = os.path.dirname(os.path.abspath(__file__))
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static_dir = os.path.join(current_dir, 'static')
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full_path = os.path.normpath(os.path.join(static_dir, file_path))
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# 安全检查：确保请求的文件在static目录内
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if not os.path.abspath(full_path).startswith(os.path.abspath(static_dir)):
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logger.error(f"Security check failed for path: {full_path}")
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raise web.notfound()
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if not os.path.exists(full_path) or not os.path.isfile(full_path):
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logger.error(f"File not found: {full_path}")
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raise web.notfound()
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# 设置正确的Content-Type
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content_type = mimetypes.guess_type(full_path)[0]
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if content_type:
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web.header('Content-Type', content_type)
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else:
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# 默认为二进制流
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web.header('Content-Type', 'application/octet-stream')
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# 读取并返回文件内容
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with open(full_path, 'rb') as f:
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return f.read()
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except Exception as e:
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logger.error(f"Error serving static file: {e}", exc_info=True) # 添加更详细的错误信息
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raise web.notfound()
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