feat(tts): add text-to-speech endpoint

api/main.py

@@ -12,7 +12,13 @@ import sys
 sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 from chat_service import ChatService
-from config import OPENAI_API_BASE_URL_CONFIG, OPENAI_API_KEY_FROM_CONFIG, OPENAI_LLM_MODEL
+from config import (
+    DEFAULT_USER_ID,
+    OPENAI_API_BASE_URL_CONFIG,
+    OPENAI_API_KEY_FROM_CONFIG,
+    OPENAI_LLM_MODEL,
+)
+from api.doubao_tts import text_to_speech
 from logging_config import setup_logging, get_logger
 
 # 设置日志
@@ -44,6 +50,19 @@ class ChatResponse(BaseModel):
     audio_error: Optional[str] = None
 
 
+class TTSRequest(BaseModel):
+    text: str
+    user_id: Optional[str] = None
+
+
+class TTSResponse(BaseModel):
+    success: bool
+    audio_data: Optional[str] = None  # base64 编码的音频数据
+    message: Optional[str] = None
+    user_id: Optional[str] = None
+    error: Optional[str] = None
+
+
 # 全局聊天服务实例
 chat_service = ChatService()
 
@@ -180,6 +199,38 @@ async def chat_stream_endpoint(request: Request):
     )
 
 
+@app.post("/tts", response_model=TTSResponse)
+async def tts_endpoint(request: TTSRequest):
+    """
+    文本转语音接口
+
+    仅负责将输入文本转为 base64 音频数据
+    """
+    text = request.text.strip() if request.text else ""
+    if not text:
+        raise HTTPException(status_code=400, detail="text is required")
+
+    user_id = request.user_id or DEFAULT_USER_ID
+
+    try:
+        success, message, base64_audio = text_to_speech(text, user_id)
+        if success and base64_audio:
+            return TTSResponse(
+                success=True,
+                audio_data=base64_audio,
+                message=message,
+                user_id=user_id
+            )
+        return TTSResponse(
+            success=False,
+            message=message,
+            error=message or "TTS failed",
+            user_id=user_id
+        )
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"TTS error: {str(e)}")
+
+
 if __name__ == "__main__":
     uvicorn.run(
         "main:app",