feat: 添加Discord适配器与跨平台消息互通功能
新增Discord适配器支持，实现Discord与QQ之间的消息互通 添加通用数据模型用于跨平台消息转换 扩展配置系统以支持Discord和日志配置 重构日志系统以使用配置中的日志级别 在反向WebSocket管理器中注册Bot实例 更新主程序以支持Discord客户端启动 添加测试脚本验证核心功能
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406
adapters/router.py
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406
adapters/router.py
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# -*- coding: utf-8 -*-
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"""
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事件路由与转换器 (Event Router & Converter)
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此模块负责在不同平台（如 Discord）和 OneBot 业务逻辑之间进行数据转换。
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核心目标是：**让现有的 OneBot 插件（如 bili.py）在不修改任何代码的情况下，能够处理 Discord 消息。**
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实现原理：
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1. 接收 Discord 消息 (`discord.Message`)。
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2. 将其“伪装”成 OneBot 的 `GroupMessageEvent` 或 `PrivateMessageEvent`。
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3. 拦截插件调用的 `event.reply()` 方法。
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4. 将插件返回的 OneBot `MessageSegment` 转换为 Discord 格式并发送。
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"""
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import asyncio
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from typing import Union, List, Any, Optional
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try:
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import discord
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DISCORD_AVAILABLE = True
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except ImportError:
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DISCORD_AVAILABLE = False
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from models.events.message import GroupMessageEvent, PrivateMessageEvent
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from models.message import MessageSegment as OneBotMessageSegment
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from models.sender import Sender
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from core.utils.logger import ModuleLogger
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logger = ModuleLogger("EventRouter")
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class DiscordToOneBotConverter:
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"""
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将 Discord 消息转换为 OneBot 消息事件的转换器。
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"""
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@staticmethod
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def create_mock_event(discord_message: 'discord.Message', adapter: Any) -> Union[GroupMessageEvent, PrivateMessageEvent]:
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"""
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将 discord.Message 伪装成 OneBot 的 MessageEvent。
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Args:
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discord_message: 原始的 Discord 消息对象
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adapter: DiscordAdapter 实例，用于回调发送消息
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Returns:
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伪装后的 OneBot 事件对象
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"""
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# 1. 提取基础信息
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user_id = discord_message.author.id
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message_id = discord_message.id
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# 处理 Discord 的 raw_message
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# 如果消息是以 @机器人 开头，Discord 的 content 会是 "<@机器人ID> /echo 1"
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# 我们需要把前面的 @ 提及去掉，否则命令匹配器 (matcher) 无法识别以 "/" 开头的命令
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raw_message = discord_message.content
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# 添加附件信息到 raw_message
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if discord_message.attachments:
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for attachment in discord_message.attachments:
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raw_message += f"\n{attachment.url}"
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bot_mention = f"<@{adapter.user.id}>"
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if raw_message.startswith(bot_mention):
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raw_message = raw_message[len(bot_mention):].strip()
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# 构造发送者信息
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sender = Sender(
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user_id=user_id,
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nickname=discord_message.author.display_name,
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card=getattr(discord_message.author, 'nick', ''), # 群名片
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role="member" # 简化处理，默认都是普通成员
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)
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# 2. 判断是群聊还是私聊
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is_private = isinstance(discord_message.channel, discord.DMChannel)
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# 构造 message 列表 (将纯文本转换为 MessageSegment)
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message_list = [OneBotMessageSegment.text(raw_message)]
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import time
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current_time = int(time.time())
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self_id = adapter.user.id if adapter.user else 0
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# 注入 Discord 特定信息（用于跨平台插件识别）
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discord_channel_id = discord_message.channel.id if not isinstance(discord_message.channel, discord.DMChannel) else None
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discord_username = discord_message.author.name
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discord_discriminator = f"#{discord_message.author.discriminator}" if discord_message.author.discriminator != "0" else ""
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if is_private:
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# 构造私聊事件
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event = PrivateMessageEvent(
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time=current_time,
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self_id=self_id,
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message_type="private",
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sub_type="friend",
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message_id=message_id,
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user_id=user_id,
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raw_message=raw_message,
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message=message_list,
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sender=sender
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)
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else:
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# 构造群聊事件
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group_id = discord_message.channel.id
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event = GroupMessageEvent(
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time=current_time,
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self_id=self_id,
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message_type="group",
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sub_type="normal",
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message_id=message_id,
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user_id=user_id,
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group_id=group_id,
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raw_message=raw_message,
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message=message_list,
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sender=sender
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)
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# 注入 Discord 特定属性（用于跨平台插件识别）
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event._is_discord_message = True
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event.discord_channel_id = discord_channel_id
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event.discord_username = discord_username
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event.discord_discriminator = discord_discriminator
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# 3. 拦截并重写 reply 方法 (核心魔法)
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# 插件调用 event.reply() 时，实际上会执行这个闭包
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async def mock_reply(message: Union[str, OneBotMessageSegment, List[OneBotMessageSegment]], auto_escape: bool = False):
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await DiscordToOneBotConverter.send_discord_reply(discord_message, message, adapter)
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# 覆盖实例方法
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event.reply = mock_reply
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# 注入一个假的 bot 对象，防止插件调用 event.bot.xxx 时报错
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# 这里只提供最基础的属性，如果插件调用了复杂的 API，可能会报错
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class MockBot:
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def __init__(self):
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self.self_id = adapter.user.id if adapter.user else 0
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async def send(self, event, message, **kwargs):
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await DiscordToOneBotConverter.send_discord_reply(discord_message, message, adapter)
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async def send_forwarded_messages(self, target, nodes):
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"""
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模拟发送合并转发消息。
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Discord 不支持像 QQ 那样的合并转发，所以我们将其转换为普通消息发送。
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"""
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content = ""
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files = []
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for node in nodes:
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if node.get("type") == "node":
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node_data = node.get("data", {})
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node_content = node_data.get("content", [])
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# 提取节点中的文本和图片
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if isinstance(node_content, str):
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# 尝试解析 CQ 码
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import re
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cq_pattern = r'\[CQ:([^,]+)(?:,([^\]]+))?\]'
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matches = list(re.finditer(cq_pattern, node_content))
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if not matches:
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content += f"{node_content}\n"
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else:
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last_end = 0
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for match in matches:
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if match.start() > last_end:
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content += node_content[last_end:match.start()]
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cq_type = match.group(1)
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cq_params_str = match.group(2) or ""
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params = {}
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if cq_params_str:
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for param in cq_params_str.split(','):
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if '=' in param:
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k, v = param.split('=', 1)
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params[k] = v
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if cq_type in ("image", "video"):
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file_url = params.get("url") or params.get("file")
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if file_url:
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if str(file_url).startswith("http"):
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content += f"\n{file_url}\n"
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elif str(file_url).startswith("base64://"):
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import base64
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import io
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b64_data = str(file_url)[9:]
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if b64_data.startswith("data:image"):
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b64_data = b64_data.split(",", 1)[1]
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try:
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image_bytes = base64.b64decode(b64_data)
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files.append(discord.File(fp=io.BytesIO(image_bytes), filename="image.png"))
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except Exception as e:
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logger.error(f"解析 Base64 图片失败: {e}")
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else:
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try:
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files.append(discord.File(file_url))
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except Exception as e:
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logger.error(f"无法读取本地文件 {file_url}: {e}")
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elif cq_type == "at":
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qq_id = params.get("qq")
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if qq_id == "all":
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content += "@everyone "
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else:
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content += f"<@{qq_id}> "
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last_end = match.end()
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if last_end < len(node_content):
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content += node_content[last_end:]
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content += "\n"
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elif isinstance(node_content, list):
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for seg in node_content:
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if isinstance(seg, dict):
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seg_type = seg.get("type")
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seg_data = seg.get("data", {})
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if seg_type == "text":
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content += seg_data.get("text", "")
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elif seg_type == "image" or seg_type == "video":
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file_url = seg_data.get("url") or seg_data.get("file")
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if file_url:
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if isinstance(file_url, bytes):
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import io
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try:
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files.append(discord.File(fp=io.BytesIO(file_url), filename="image.png"))
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except Exception as e:
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logger.error(f"解析 bytes 图片失败: {e}")
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elif str(file_url).startswith("http"):
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content += f"\n{file_url}\n"
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elif str(file_url).startswith("base64://") or "data:image" in str(file_url):
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import base64
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import io
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b64_data = str(file_url)
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if b64_data.startswith("base64://"):
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b64_data = b64_data[9:]
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if b64_data.startswith("data:image"):
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b64_data = b64_data.split(",", 1)[1]
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try:
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image_bytes = base64.b64decode(b64_data)
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files.append(discord.File(fp=io.BytesIO(image_bytes), filename="image.png"))
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except Exception as e:
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logger.error(f"解析 Base64 图片失败: {e}")
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else:
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try:
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files.append(discord.File(file_url))
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except Exception as e:
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logger.error(f"无法读取本地文件 {file_url}: {e}")
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content += "\n"
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try:
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if content or files:
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await discord_message.channel.send(content=content, files=files if files else None)
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except Exception as e:
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logger.error(f"发送 Discord 合并转发消息失败: {e}")
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event.bot = MockBot()
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return event
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@staticmethod
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async def send_discord_reply(
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original_message: 'discord.Message',
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message: Union[str, OneBotMessageSegment, List[OneBotMessageSegment]],
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adapter: Any
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):
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"""
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将 OneBot 的消息段转换为 Discord 格式并发送。
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Args:
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original_message: 触发此回复的原始 Discord 消息
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message: 插件返回的 OneBot 消息内容 (字符串或 MessageSegment 列表)
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adapter: DiscordAdapter 实例
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"""
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content = ""
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files = []
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# 统一转换为列表处理
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if not isinstance(message, list):
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message = [message]
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import re
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for segment in message:
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if isinstance(segment, str):
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# 尝试解析 CQ 码
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cq_pattern = r'\[CQ:([^,]+)(?:,([^\]]+))?\]'
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matches = list(re.finditer(cq_pattern, segment))
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if not matches:
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content += segment
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continue
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last_end = 0
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for match in matches:
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# 添加 CQ 码之前的纯文本
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if match.start() > last_end:
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content += segment[last_end:match.start()]
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cq_type = match.group(1)
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cq_params_str = match.group(2) or ""
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# 解析参数
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params = {}
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if cq_params_str:
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for param in cq_params_str.split(','):
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if '=' in param:
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k, v = param.split('=', 1)
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params[k] = v
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if cq_type in ("image", "video"):
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file_url = params.get("url") or params.get("file")
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if file_url:
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if str(file_url).startswith("http"):
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content += f"\n{file_url}"
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elif str(file_url).startswith("base64://") or "data:image" in str(file_url):
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import base64
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import io
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b64_data = str(file_url)
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if b64_data.startswith("base64://"):
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b64_data = b64_data[9:]
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if b64_data.startswith("data:image"):
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b64_data = b64_data.split(",", 1)[1]
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try:
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image_bytes = base64.b64decode(b64_data)
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files.append(discord.File(fp=io.BytesIO(image_bytes), filename="image.png"))
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except Exception as e:
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logger.error(f"解析 Base64 图片失败: {e}")
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else:
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try:
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files.append(discord.File(file_url))
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except Exception as e:
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logger.error(f"无法读取本地文件 {file_url}: {e}")
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elif cq_type == "at":
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qq_id = params.get("qq")
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if qq_id == "all":
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content += "@everyone "
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else:
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content += f"<@{qq_id}> "
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last_end = match.end()
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# 添加最后一个 CQ 码之后的纯文本
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if last_end < len(segment):
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content += segment[last_end:]
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elif isinstance(segment, OneBotMessageSegment):
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# 解析 OneBot 的 MessageSegment
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seg_type = segment.type
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seg_data = segment.data
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if seg_type == "text":
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content += seg_data.get("text", "")
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elif seg_type == "image" or seg_type == "video":
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# OneBot 的图片/视频通常有 file (URL或本地路径) 或 url 字段
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file_url = seg_data.get("url") or seg_data.get("file")
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if file_url:
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# 处理 bytes 类型
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if isinstance(file_url, bytes):
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import io
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try:
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files.append(discord.File(fp=io.BytesIO(file_url), filename="image.png"))
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except Exception as e:
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logger.error(f"解析 bytes 图片失败: {e}")
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elif str(file_url).startswith("http"):
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# 如果是网络 URL，直接拼接到文本中，Discord 会自动解析预览
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content += f"\n{file_url}"
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elif str(file_url).startswith("base64://") or "data:image" in str(file_url):
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# 处理 Base64 图片 (需要解码并作为文件上传)
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import base64
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import io
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b64_data = str(file_url)
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if b64_data.startswith("base64://"):
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b64_data = b64_data[9:]
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if b64_data.startswith("data:image"):
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b64_data = b64_data.split(",", 1)[1]
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try:
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image_bytes = base64.b64decode(b64_data)
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files.append(discord.File(fp=io.BytesIO(image_bytes), filename="image.png"))
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except Exception as e:
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logger.error(f"解析 Base64 图片失败: {e}")
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else:
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# 假设是本地文件路径
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try:
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files.append(discord.File(file_url))
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except Exception as e:
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logger.error(f"无法读取本地文件 {file_url}: {e}")
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elif seg_type == "at":
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qq_id = seg_data.get("qq")
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if qq_id == "all":
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content += "@everyone "
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else:
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# 尝试将 QQ 号映射回 Discord ID (这里简单处理，直接拼接)
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content += f"<@{qq_id}> "
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elif seg_type == "reply":
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# 忽略回复段，或者你可以尝试映射 message_id
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pass
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# 发送消息到 Discord
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try:
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# 如果内容为空但有文件，Discord 允许发送
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if content or files:
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await original_message.channel.send(content=content, files=files if files else None)
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else:
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logger.warning("尝试发送空消息到 Discord，已拦截")
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except Exception as e:
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logger.error(f"发送 Discord 消息失败: {e}")
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Reference in New Issue
Block a user