feat(跨平台): 增强跨平台消息互通功能

- 支持合并转发消息解析和展示
- 优化附件处理逻辑，支持文件名和类型识别
- 添加 Discord Embed 卡片支持，提升消息展示效果
- 重构消息格式化和转发逻辑，提高可维护性
- 更新代理配置和日志级别设置

adapters/discord_adapter.py

@@ -32,22 +32,30 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
     def __init__(self, token: str):
         if not DISCORD_AVAILABLE:
             raise ImportError("discord.py 未安装，请运行 `pip install discord.py`")
-            
-        # 必须声明 Intents，否则无法读取消息内容
-        intents = discord.Intents.default()
-        intents.message_content = True
         
-        # 检查是否配置了代理
+        self.logger = ModuleLogger("DiscordAdapter")
+        self.token = token
+        self.send_channel = None
+        
         self.proxy = None
         self.proxy_type = "http"
         if global_config.discord.proxy:
             self.proxy = global_config.discord.proxy
             self.proxy_type = global_config.discord.proxy_type or "http"
+            
+            proxy_url = self.proxy
+            if self.proxy_type.lower() in ["socks5", "socks4"]:
+                if not proxy_url.startswith(("socks5://", "socks4://")):
+                    proxy_url = f"{self.proxy_type.lower()}://{proxy_url.split('://')[-1]}"
+            
+            os.environ["HTTP_PROXY"] = proxy_url
+            os.environ["HTTPS_PROXY"] = proxy_url
+            self.logger.info(f"[DiscordAdapter] 代理已设置: {proxy_url} (类型: {self.proxy_type})")
+            
+        intents = discord.Intents.default()
+        intents.message_content = True
         
         super().__init__(intents=intents)
-        self.token = token
-        self.logger = ModuleLogger("DiscordAdapter")
-        self.send_channel = None
 
     async def on_ready(self):
         """当 Bot 成功连接到 Discord 时触发"""
@@ -110,6 +118,7 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
             channel_id = data.get("channel_id")
             content = data.get("content", "")
             attachments = data.get("attachments", [])
+            embed_data = data.get("embed")
             
             if channel_id is None:
                 self.logger.error("[DiscordAdapter] 缺少 channel_id")
@@ -122,9 +131,38 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
             
             self.logger.info(f"[DiscordAdapter] 正在发送消息到频道 {channel_id}")
             
-            # 发送内容和附件（合并为一条消息）
-            if content or attachments:
-                await channel.send(content=content, files=[discord.File(fp=io.BytesIO(requests.get(attachment_url).content), filename=os.path.basename(attachment_url)) for attachment_url in attachments if attachment_url.startswith('http')] if attachments else None)
+            files = []
+            if attachments:
+                proxies = None
+                if self.proxy:
+                    proxies = {
+                        "http": self.proxy,
+                        "https": self.proxy
+                    }
+                
+                for attachment in attachments:
+                    if isinstance(attachment, dict):
+                        attachment_url = attachment.get("url", "")
+                        filename = attachment.get("filename", "")
+                    else:
+                        attachment_url = str(attachment)
+                        filename = ""
+                    
+                    if attachment_url.startswith('http'):
+                        try:
+                            response = requests.get(attachment_url, proxies=proxies, timeout=30)
+                            if not filename:
+                                filename = os.path.basename(attachment_url.split('?')[0]) or "attachment"
+                            files.append(discord.File(fp=io.BytesIO(response.content), filename=filename))
+                        except Exception as e:
+                            self.logger.error(f"[DiscordAdapter] 下载附件失败: {attachment_url}, 错误: {e}")
+            
+            embed = None
+            if embed_data:
+                embed = discord.Embed.from_dict(embed_data)
+            
+            if content or files or embed:
+                await channel.send(content=content, files=files if files else None, embed=embed)
                 
             self.logger.success(f"[DiscordAdapter] 消息已发送到频道 {channel_id}")
             
@@ -139,35 +177,6 @@ class DiscordAdapter(discord.Client if DISCORD_AVAILABLE else object):
             
         try:
             self.logger.info("正在连接 Discord...")
-            
-            # 如果配置了代理，使用自定义的 ClientSession
-            if self.proxy:
-                import aiohttp
-                proxy_url = self.proxy
-                self.logger.info(f"[DiscordAdapter] 使用代理: {proxy_url} (类型: {self.proxy_type})")
-                
-                connector = aiohttp.TCPConnector()
-                session = aiohttp.ClientSession(connector=connector)
-                
-                # discord.py 2.0+ 使用 discord.Client 的 connector 参数
-                # 但 discord.Client 不直接支持自定义 connector
-                # 需要使用 discord.AutoShardedClient 或修改内部实现
-                # 这里我们使用 discord.Client 的 __init__ 传递 connector
-                # 但 discord.Client 的 __init__ 不支持 connector 参数
-                # 所以我们需要使用 discord.Client 的 _create_http_client 方法
-                
-                # 简单方案：使用环境变量设置代理
-                import os
-                os.environ["HTTP_PROXY"] = proxy_url
-                os.environ["HTTPS_PROXY"] = proxy_url
-                
-                self.logger.info("[DiscordAdapter] 代理已设置，正在连接 Discord...")
-                await self.start(self.token)
-                
-                # 清理环境变量
-                os.environ.pop("HTTP_PROXY", None)
-                os.environ.pop("HTTPS_PROXY", None)
-            else:
-                await self.start(self.token)
+            await self.start(self.token)
         except Exception as e:
             self.logger.error(f"Discord 连接失败: {e}")