ASR句首丢字问题 (#346)

* fix: ASR句首丢字问题 (#338)

* feat: 支持dify的多轮对话, chat工作流支持持久化conversation_id #296 (#313)

* TTS功能的一些修改 (#307)

* fix: tts音频转码兼容

* feat: 支持自定义tts接口服务

* feat: tts超时时间作为可配置项

* feat: 自定义tts音频格式兼容

* style: 使命名更符合语义

---------

Co-authored-by: Jad <i@nocilol.me>
Co-authored-by: yanyige <yige.yan@qq.com>
Co-authored-by: Jad <journey.adc@gmail.com>

main/xiaozhi-server/core/providers/llm/dify/dify.py

@@ -10,11 +10,13 @@ class LLMProvider(LLMProviderBase):
     def __init__(self, config):
         self.api_key = config["api_key"]
         self.base_url = config.get("base_url", "https://api.dify.ai/v1").rstrip('/')
+        self.session_conversation_map = {}  # 存储session_id和conversation_id的映射
 
     def response(self, session_id, dialogue):
         try:
             # 取最后一条用户消息
             last_msg = next(m for m in reversed(dialogue) if m["role"] == "user")
+            conversation_id = self.session_conversation_map.get(session_id)
 
             # 发起流式请求
             with requests.post(
@@ -24,13 +26,18 @@ class LLMProvider(LLMProviderBase):
                         "query": last_msg["content"],
                         "response_mode": "streaming",
                         "user": session_id,
-                        "inputs": {}
+                        "inputs": {},
+                        "conversation_id": conversation_id
                     },
                     stream=True
             ) as r:
                 for line in r.iter_lines():
                     if line.startswith(b'data: '):
                         event = json.loads(line[6:])
+                        # 如果没有找到conversation_id，则获取此次conversation_id
+                        if not conversation_id:
+                            conversation_id = event.get('conversation_id')
+                            self.session_conversation_map[session_id] = conversation_id  # 更新映射
                         if event.get('answer'):
                             yield event['answer']