fix(discord-cross): 修复跨平台消息处理和附件下载问题

修复QQ群消息处理中的非群消息过滤问题
优化Discord附件下载逻辑，使用aiohttp替代requests
修复Redis订阅任务重复创建问题
调整消息格式化的embed字段处理逻辑

adapters/discord_adapter.py

@@ -41,6 +41,7 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
         
         self.proxy = None
         self.proxy_type = "http"
+        self._redis_sub_task = None
         if global_config.discord.proxy:
             self.proxy = global_config.discord.proxy
             self.proxy_type = global_config.discord.proxy_type or "http"
@@ -66,7 +67,8 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
         self.start_heartbeat_task(interval=30)
         
         # 启动 Redis 订阅以处理跨平台消息
-        asyncio.create_task(self.start_redis_subscription())
+        if self._redis_sub_task is None or self._redis_sub_task.done():
+            self._redis_sub_task = asyncio.create_task(self.start_redis_subscription())
 
     async def on_message(self, message: 'discord.Message'):
         """当收到 Discord 消息时触发"""
@@ -94,7 +96,7 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
 
     async def start_redis_subscription(self):
         """启动 Redis 订阅以处理跨平台消息发送"""
-        if redis_manager.redis is None:
+        if redis_manager._redis is None:
             self.logger.warning("[DiscordAdapter] Redis 未初始化，跳过订阅")
             return
             
@@ -226,7 +228,12 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
                     
                     if attachment_url.startswith('http'):
                         try:
-                            response = requests.get(attachment_url, proxies=proxies, timeout=30)
+                            import aiohttp
+                            proxy_url = self.proxy if self.proxy else None
+                            async with aiohttp.ClientSession() as session:
+                                async with session.get(attachment_url, proxy=proxy_url, timeout=30) as response:
+                                    content_bytes = await response.read()
+                                    
                             if not filename:
                                 filename = os.path.basename(attachment_url.split('?')[0]) or "attachment"
                             
@@ -235,7 +242,7 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
                             
                             if is_voice:
                                 # 尝试转换为 OGG Opus
-                                ogg_bytes = await self.convert_to_ogg_opus(response.content)
+                                ogg_bytes = await self.convert_to_ogg_opus(content_bytes)
                                 if ogg_bytes:
                                     # 转换成功，作为语音消息发送
                                     # discord.py 官方 API 目前不支持直接发送语音消息
@@ -277,9 +284,9 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
                                         files.append(discord.File(fp=io.BytesIO(ogg_bytes), filename="voice.ogg"))
                                 else:
                                     # 转换失败，作为普通文件发送
-                                    files.append(discord.File(fp=io.BytesIO(response.content), filename=filename))
+                                    files.append(discord.File(fp=io.BytesIO(content_bytes), filename=filename))
                             else:
-                                files.append(discord.File(fp=io.BytesIO(response.content), filename=filename))
+                                files.append(discord.File(fp=io.BytesIO(content_bytes), filename=filename))
                         except Exception as e:
                             self.logger.error(f"[DiscordAdapter] 下载附件失败: {attachment_url}, 错误: {e}")
             

plugins/discord-cross/handlers.py

@@ -55,6 +55,10 @@ async def handle_qq_group_message(event: GroupMessageEvent):
         if not config.ENABLE_CROSS_PLATFORM:
             return
             
+        # 忽略非群消息和 Discord 注入的消息
+        if not hasattr(event, 'group_id') or hasattr(event, '_is_discord_message'):
+            return
+            
         group_id = event.group_id
         mapped_channel = None
         for discord_channel_id, info in config.CROSS_PLATFORM_MAP.items():

plugins/discord-cross/parser.py

@@ -327,13 +327,14 @@ async def format_qq_to_discord_content(
             "name": f"{qq_nickname}",
             "icon_url": f"https://q1.qlogo.cn/g?b=qq&nk={qq_user_id}&s=640"
         },
-        "description": content if content else "",
-        "timestamp": None,
         "footer": {
             "text": f"来自 QQ"
         }
     }
     
+    if content:
+        embed["description"] = content
+    
     if attachments:
         image_urls = []
         voice_urls = []
@@ -364,7 +365,10 @@ async def format_qq_to_discord_content(
                 filtered_attachments.append(att)
         
         attachments = filtered_attachments
-        embed["description"] = content if content else ""
+        if content:
+            embed["description"] = content
+        elif "description" not in embed:
+            embed["description"] = ""
         
         if image_urls:
             embed["image"] = {"url": image_urls[0]}