feat: add logging for TTS calls with timing and error details

app/main.py

@@ -9,6 +9,8 @@ import base64
 import subprocess
 import uuid
 import asyncio
+import logging
+import time
 from contextlib import asynccontextmanager
 from pathlib import Path
 
@@ -22,6 +24,15 @@ from sqlalchemy.orm import DeclarativeBase
 
 import config
 
+# ── Logging ───────────────────────────────────────────────────────────────
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(message)s",
+    datefmt="%Y-%m-%d %H:%M:%S",
+)
+logger = logging.getLogger("tts-service")
+
 # ── Database ──────────────────────────────────────────────────────────────
 
 engine = create_async_engine(config.DATABASE_URL, echo=False)
@@ -76,20 +87,30 @@ async def call_mimo_tts(text: str, style: str = "") -> bytes:
         "api-key": config.MIMO_API_KEY,
     }
 
+    t0 = time.time()
+    logger.info(f"MiMo TTS 请求: text_len={len(text)}, style={style or '(默认)'}")
+
     async with httpx.AsyncClient(timeout=120) as client:
         resp = await client.post(config.MIMO_API_ENDPOINT, json=payload, headers=headers)
 
+    elapsed = round(time.time() - t0, 2)
+
     if resp.status_code != 200:
+        logger.error(f"MiMo TTS 错误: HTTP {resp.status_code}, 耗时 {elapsed}s, 响应: {resp.text[:200]}")
         raise HTTPException(502, f"MiMo TTS API 错误: HTTP {resp.status_code} - {resp.text[:300]}")
 
     data = resp.json()
     if data.get("error"):
+        logger.error(f"MiMo TTS 业务错误: {data['error']}, 耗时 {elapsed}s")
         raise HTTPException(502, f"MiMo TTS 错误: {data['error']}")
 
     try:
         audio_b64 = data["choices"][0]["message"]["audio"]["data"]
-        return base64.b64decode(audio_b64)
+        wav_bytes = base64.b64decode(audio_b64)
+        logger.info(f"MiMo TTS 成功: wav_size={len(wav_bytes)} bytes, 耗时 {elapsed}s")
+        return wav_bytes
     except (KeyError, IndexError, TypeError) as e:
+        logger.error(f"MiMo TTS 响应解析失败: {e}, 耗时 {elapsed}s")
         raise HTTPException(502, f"MiMo TTS 响应解析失败: {e}")