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whisper-stt/app/main.py

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Python
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import os, uuid, time, glob, json, threading
import psutil, httpx, aiofiles
from pathlib import Path
from datetime import datetime
from fastapi import FastAPI, UploadFile, File, HTTPException, Depends, Form, Request
from fastapi.staticfiles import StaticFiles
from fastapi.responses import FileResponse
from typing import List
from auth import (authenticate, create_access_token, init_users,
require_auth, require_admin, require_stt, require_ocr,
list_users, create_user, update_user, delete_user)
from tasks import celery_app, transcribe_task, subtitle_pipeline_task
from ocr_tasks import ocr_task
app = FastAPI(title="VoiceScript API")
UPLOAD_DIR = os.getenv("UPLOAD_DIR", "/data/uploads")
OUTPUT_DIR = os.getenv("OUTPUT_DIR", "/data/outputs")
OLLAMA_URL = os.getenv("OLLAMA_URL", "http://192.168.0.126:11434")
MAX_UPLOAD_BYTES = int(os.getenv("MAX_UPLOAD_MB", "500")) * 1024 * 1024
OUTPUT_KEEP_SECS = int(os.getenv("OUTPUT_KEEP_HOURS", "48")) * 3600
DATA_DIR = Path(UPLOAD_DIR).parent
SETTINGS_FILE = DATA_DIR / "settings.json"
HISTORY_FILE = DATA_DIR / "history.json"
HISTORY_MAX = 300
os.makedirs(UPLOAD_DIR, exist_ok=True)
os.makedirs(OUTPUT_DIR, exist_ok=True)
AUDIO_EXT = {"mp3","mp4","wav","m4a","ogg","flac","aac","wma","webm",
"mkv","avi","mov","ts","mts","m2ts","wmv","flv","h264","h265","hevc","264","265"}
IMAGE_EXT = {"jpg","jpeg","png","bmp","tiff","tif","webp","gif"}
VIDEO_EXT = {"mp4","mkv","avi","mov","webm","ts","mts","m2ts","wmv","flv","h264","h265","hevc","264","265","m4v","3gp","rm","rmvb"}
_DEFAULT_SETTINGS = {
"stt_ollama_model":"","ocr_ollama_model":"granite3.2-vision:latest",
"cpu_threads":0,"stt_timeout":0,"ollama_timeout":600,
"openrouter_url":"https://openrouter.ai/api/v1",
"openrouter_api_key":"","openrouter_stt_model":"","openrouter_ocr_model":"",
}
_hist_lock = threading.Lock()
# ── 설정 I/O ─────────────────────────────────────────────────
def _load_settings() -> dict:
if not SETTINGS_FILE.exists(): return dict(_DEFAULT_SETTINGS)
with open(SETTINGS_FILE,"r",encoding="utf-8") as f: data=json.load(f)
for k,v in _DEFAULT_SETTINGS.items(): data.setdefault(k,v)
return data
def _save_settings(data:dict):
SETTINGS_FILE.parent.mkdir(parents=True,exist_ok=True)
with open(SETTINGS_FILE,"w",encoding="utf-8") as f: json.dump(data,f,ensure_ascii=False,indent=2)
# ── 이력 I/O ─────────────────────────────────────────────────
def _load_history()->list:
with _hist_lock:
if not HISTORY_FILE.exists(): return []
try:
with open(HISTORY_FILE,"r",encoding="utf-8") as f: return json.load(f)
except: return []
def _write_history(h:list):
HISTORY_FILE.parent.mkdir(parents=True,exist_ok=True)
with open(HISTORY_FILE,"w",encoding="utf-8") as f: json.dump(h,f,ensure_ascii=False,indent=2)
def append_history(record:dict):
with _hist_lock:
try:
history=[]
if HISTORY_FILE.exists():
with open(HISTORY_FILE,"r",encoding="utf-8") as f: history=json.load(f)
history.insert(0,record); _write_history(history[:HISTORY_MAX])
except: pass
def _update_history_by_task(task_id:str, result:dict, success:bool, error_msg:str=""):
with _hist_lock:
if not HISTORY_FILE.exists(): return
try:
with open(HISTORY_FILE,"r",encoding="utf-8") as f: history=json.load(f)
for h in history:
if h.get("task_id")!=task_id: continue
if h.get("status")!="processing": break
h["status"]="failed" if not success else "success"
if not success:
h["output"]={"error":error_msg[:300]}
elif h["type"]=="stt":
text=result.get("text","")
h["output"]={
"filename":result.get("output_file",""),
"language":result.get("language",""),
"duration_s":result.get("duration",0),
"segments":len(result.get("segments",[])),
"text_preview":text[:200]+("…" if len(text)>200 else ""),
"ollama_used":result.get("ollama_used",False),
"ollama_model":result.get("ollama_model",""),
"openrouter_used":result.get("openrouter_used",False),
"openrouter_model":result.get("openrouter_model",""),
}
elif h["type"]=="subtitle":
h["output"]={
"detected_language":result.get("detected_language",""),
"duration_s":result.get("duration",0),
"segment_count":result.get("segment_count",0),
"translated":result.get("translated",False),
"translate_to":result.get("translate_to",""),
"srt_orig":result.get("srt_orig",""),
"vtt_orig":result.get("vtt_orig",""),
"srt_trans":result.get("srt_trans",""),
"vtt_trans":result.get("vtt_trans",""),
}
else:
ft=result.get("full_text","")
h["output"]={
"txt_file":result.get("txt_file",""),
"xlsx_file":result.get("xlsx_file",""),
"line_count":result.get("line_count",0),
"table_count":len(result.get("tables",[])),
"backend":result.get("backend",""),
"ollama_model":result.get("ollama_model",""),
"openrouter_model":result.get("openrouter_model",""),
"text_preview":ft[:200]+("…" if len(ft)>200 else ""),
}
break
_write_history(history)
except: pass
def delete_history_item(hid:str)->bool:
with _hist_lock:
if not HISTORY_FILE.exists(): return False
try:
with open(HISTORY_FILE,"r",encoding="utf-8") as f: history=json.load(f)
new=[h for h in history if h.get("id")!=hid]
if len(new)==len(history): return False
_write_history(new); return True
except: return False
def clear_history():
with _hist_lock:
if HISTORY_FILE.exists(): HISTORY_FILE.write_text("[]",encoding="utf-8")
# ════════════════════════════════════════════════════════════════
# 시작
# ════════════════════════════════════════════════════════════════
@app.on_event("startup")
async def on_startup():
init_users(); _cleanup_outputs()
# ════════════════════════════════════════════════════════════════
# 인증
# ════════════════════════════════════════════════════════════════
@app.post("/api/login")
def login(username:str=Form(...),password:str=Form(...)):
user=authenticate(username,password)
if not user: raise HTTPException(401,"아이디 또는 비밀번호가 올바르지 않습니다")
return {"access_token":create_access_token(username),"token_type":"bearer"}
@app.get("/api/me")
def me(user:dict=Depends(require_auth)):
return {"username":user["username"],"role":user.get("role","user"),
"permissions":user.get("permissions",{"stt":False,"ocr":False})}
# ════════════════════════════════════════════════════════════════
# 시스템 정보
# ════════════════════════════════════════════════════════════════
@app.get("/api/system")
def system_info(user:dict=Depends(require_auth)):
mem=psutil.virtual_memory();swap=psutil.swap_memory();s=_load_settings()
return {
"ram_total_gb":round(mem.total/1024**3,1),"ram_used_gb":round(mem.used/1024**3,1),
"ram_avail_gb":round(mem.available/1024**3,1),"ram_percent":mem.percent,
"swap_total_gb":round(swap.total/1024**3,1),"swap_used_gb":round(swap.used/1024**3,1),
"cpu_logical":psutil.cpu_count(logical=True),"cpu_physical":psutil.cpu_count(logical=False),
"cpu_percent":psutil.cpu_percent(interval=0.3),
"cpu_threads_setting":s.get("cpu_threads",0),
"stt_timeout":s.get("stt_timeout",0),"ollama_timeout":s.get("ollama_timeout",600),
}
# ════════════════════════════════════════════════════════════════
# STT 단일 / 배치
# ════════════════════════════════════════════════════════════════
async def _dispatch_stt(request,files,use_ollama,ollama_model,use_openrouter,openrouter_model,user):
s=_load_settings()
_uo=use_ollama.lower()=="true"; _uor=use_openrouter.lower()=="true"
if _uo and not ollama_model.strip(): ollama_model=s.get("stt_ollama_model","")
if _uor and not openrouter_model.strip():openrouter_model=s.get("openrouter_stt_model","")
results=[]
for file in files:
_check_size(request)
ext=_ext(file.filename)
if ext not in AUDIO_EXT:
results.append({"error":f"{file.filename}: 지원하지 않는 형식","filename":file.filename}); continue
file_id=str(uuid.uuid4())
save_path=os.path.join(UPLOAD_DIR,f"{file_id}.{ext}")
await _save_upload(file,save_path); file_size=os.path.getsize(save_path)
task=transcribe_task.delay(file_id,save_path,_uo,ollama_model,_uor,openrouter_model,
s.get("openrouter_url",""),s.get("openrouter_api_key",""))
append_history({"id":file_id,"task_id":task.id,"type":"stt","status":"processing",
"timestamp":datetime.now().strftime("%Y-%m-%d %H:%M:%S"),"username":user["username"],
"input":{"filename":file.filename,"size_bytes":file_size,"format":ext.upper()},
"settings":{"model":os.getenv("WHISPER_MODEL","medium"),"language":os.getenv("WHISPER_LANGUAGE","ko"),
"compute_type":os.getenv("WHISPER_COMPUTE_TYPE","int8"),"cpu_threads":s.get("cpu_threads",0),
"use_ollama":_uo,"ollama_model":ollama_model if _uo else "",
"use_openrouter":_uor,"openrouter_model":openrouter_model if _uor else ""},
"output":None})
results.append({"task_id":task.id,"file_id":file_id,"filename":file.filename})
return results
@app.post("/api/transcribe")
async def transcribe(request:Request,file:UploadFile=File(...),
use_ollama:str=Form("false"),ollama_model:str=Form(""),
use_openrouter:str=Form("false"),openrouter_model:str=Form(""),
user:dict=Depends(require_stt)):
items=await _dispatch_stt(request,[file],use_ollama,ollama_model,use_openrouter,openrouter_model,user)
return items[0]
@app.post("/api/transcribe/batch")
async def transcribe_batch(request:Request,files:List[UploadFile]=File(...),
use_ollama:str=Form("false"),ollama_model:str=Form(""),
use_openrouter:str=Form("false"),openrouter_model:str=Form(""),
user:dict=Depends(require_stt)):
if not files: raise HTTPException(400,"파일이 없습니다")
if len(files)>20: raise HTTPException(400,"최대 20개까지")
items=await _dispatch_stt(request,files,use_ollama,ollama_model,use_openrouter,openrouter_model,user)
return {"items":items,"total":len(items)}
# ════════════════════════════════════════════════════════════════
# 자막 파이프라인 (영상 → SRT/VTT)
# ════════════════════════════════════════════════════════════════
@app.post("/api/subtitle")
async def create_subtitle(
request: Request,
file: UploadFile = File(...),
src_language: str = Form(""), # 원어 (빈칸=자동)
subtitle_fmt: str = Form("srt"), # srt | vtt | both
translate_to: str = Form(""), # 번역 대상 언어 (빈칸=번역 안 함)
trans_model: str = Form(""), # 번역 모델
trans_via: str = Form("ollama"), # ollama | openrouter
user: dict = Depends(require_stt),
):
_check_size(request)
ext = _ext(file.filename)
# 영상 + 오디오 모두 허용 (오디오만 있어도 자막 생성 가능)
if ext not in AUDIO_EXT:
raise HTTPException(400, f"지원하지 않는 형식입니다. 영상/오디오 파일을 업로드하세요.")
if subtitle_fmt not in ("srt","vtt","both"): subtitle_fmt = "srt"
s = _load_settings()
# 번역 모델 미지정 시 설정에서 가져옴
if not trans_model.strip():
trans_model = (s.get("openrouter_stt_model","") if trans_via=="openrouter"
else s.get("stt_ollama_model",""))
file_id = str(uuid.uuid4())
save_path = os.path.join(UPLOAD_DIR, f"{file_id}.{ext}")
await _save_upload(file, save_path)
file_size = os.path.getsize(save_path)
task = subtitle_pipeline_task.delay(
file_id, save_path,
src_language, subtitle_fmt,
translate_to, trans_model, trans_via,
s.get("openrouter_url",""), s.get("openrouter_api_key",""),
)
append_history({
"id": file_id, "task_id": task.id, "type": "subtitle",
"status": "processing",
"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
"username": user["username"],
"input": {"filename": file.filename, "size_bytes": file_size, "format": ext.upper()},
"settings": {
"src_language": src_language or "auto",
"subtitle_fmt": subtitle_fmt,
"translate_to": translate_to,
"trans_model": trans_model,
"trans_via": trans_via,
},
"output": None,
})
return {"task_id": task.id, "file_id": file_id, "filename": file.filename}
# ════════════════════════════════════════════════════════════════
# OCR 단일 / 배치
# ════════════════════════════════════════════════════════════════
async def _dispatch_ocr(request,files,mode,backend,ollama_model,openrouter_model,custom_prompt,user):
if mode not in ("text","structure"): mode="text"
if backend not in ("paddle","ollama","openrouter"): backend="paddle"
s=_load_settings()
if backend=="ollama" and not ollama_model.strip(): ollama_model=s.get("ocr_ollama_model","granite3.2-vision:latest")
if backend=="openrouter" and not openrouter_model.strip():openrouter_model=s.get("openrouter_ocr_model","")
results=[]
for file in files:
_check_size(request)
ext=_ext(file.filename)
if ext not in IMAGE_EXT:
results.append({"error":f"{file.filename}: 지원하지 않는 형식","filename":file.filename}); continue
file_id=str(uuid.uuid4())
save_path=os.path.join(UPLOAD_DIR,f"{file_id}.{ext}")
await _save_upload(file,save_path); file_size=os.path.getsize(save_path)
task=ocr_task.delay(file_id,save_path,mode,backend,ollama_model,openrouter_model,
s.get("openrouter_url",""),s.get("openrouter_api_key",""),custom_prompt)
append_history({"id":file_id,"task_id":task.id,"type":"ocr","status":"processing",
"timestamp":datetime.now().strftime("%Y-%m-%d %H:%M:%S"),"username":user["username"],
"input":{"filename":file.filename,"size_bytes":file_size,"format":ext.upper()},
"settings":{"backend":backend,"mode":mode,"ocr_lang":os.getenv("OCR_LANG","korean"),
"ollama_model":ollama_model if backend=="ollama" else "",
"openrouter_model":openrouter_model if backend=="openrouter" else "",
"ollama_timeout":s.get("ollama_timeout",600),"custom_prompt":custom_prompt[:200] if custom_prompt else ""},
"output":None})
results.append({"task_id":task.id,"file_id":file_id,"filename":file.filename})
return results
@app.post("/api/ocr")
async def ocr(request:Request,file:UploadFile=File(...),
mode:str=Form("text"),backend:str=Form("paddle"),
ollama_model:str=Form(""),openrouter_model:str=Form(""),custom_prompt:str=Form(""),
user:dict=Depends(require_ocr)):
items=await _dispatch_ocr(request,[file],mode,backend,ollama_model,openrouter_model,custom_prompt,user)
return items[0]
@app.post("/api/ocr/batch")
async def ocr_batch(request:Request,files:List[UploadFile]=File(...),
mode:str=Form("text"),backend:str=Form("paddle"),
ollama_model:str=Form(""),openrouter_model:str=Form(""),custom_prompt:str=Form(""),
user:dict=Depends(require_ocr)):
if not files: raise HTTPException(400,"파일이 없습니다")
if len(files)>20: raise HTTPException(400,"최대 20개까지")
items=await _dispatch_ocr(request,files,mode,backend,ollama_model,openrouter_model,custom_prompt,user)
return {"items":items,"total":len(items)}
# ════════════════════════════════════════════════════════════════
# 상태 / 이력 / 다운로드 / Ollama / OpenRouter / 설정 / 관리자
# ════════════════════════════════════════════════════════════════
@app.get("/api/status/{task_id}")
def get_status(task_id:str,user:dict=Depends(require_auth)):
r=celery_app.AsyncResult(task_id)
if r.state=="PENDING": return {"state":"pending","progress":0,"message":"대기 중..."}
if r.state=="PROGRESS": m=r.info or {};return {"state":"progress","progress":m.get("progress",0),"step":m.get("step",0),"step_msg":m.get("step_msg",""),"message":m.get("message","처리 중...")}
if r.state=="SUCCESS": _update_history_by_task(task_id,r.result or {},True);return {"state":"success","progress":100,**(r.result or {})}
if r.state=="FAILURE": _update_history_by_task(task_id,{},False,str(r.info));return {"state":"failure","progress":0,"message":str(r.info)}
return {"state":r.state.lower(),"progress":0}
@app.get("/api/history")
def get_history(page:int=1,per_page:int=15,type_:str="",user:dict=Depends(require_auth)):
history=_load_history()
if user.get("role")!="admin": history=[h for h in history if h.get("username")==user["username"]]
if type_ in ("stt","ocr","subtitle"): history=[h for h in history if h.get("type")==type_]
total=len(history);start=(page-1)*per_page
return {"total":total,"page":page,"per_page":per_page,"items":history[start:start+per_page]}
@app.delete("/api/history/{history_id}")
def delete_history(history_id:str,user:dict=Depends(require_auth)):
if not delete_history_item(history_id): raise HTTPException(404,"이력을 찾을 수 없습니다")
return {"ok":True}
@app.delete("/api/history")
def clear_all_history(user:dict=Depends(require_admin)):
clear_history();return {"ok":True}
@app.get("/api/download/{filename}")
def download(filename:str,user:dict=Depends(require_auth)):
if ".." in filename or "/" in filename: raise HTTPException(400,"잘못된 파일명")
path=os.path.join(OUTPUT_DIR,filename)
if not os.path.exists(path): raise HTTPException(404,"파일을 찾을 수 없습니다")
if filename.endswith(".xlsx"): media="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
elif filename.endswith(".vtt"): media="text/vtt"
elif filename.endswith(".srt"): media="text/plain; charset=utf-8"
else: media="text/plain; charset=utf-8"
return FileResponse(path,media_type=media,filename=filename)
@app.get("/api/ollama/models")
def ollama_models(user:dict=Depends(require_auth)):
try:
resp=httpx.get(f"{OLLAMA_URL}/api/tags",timeout=8.0);resp.raise_for_status()
return {"models":[m["name"] for m in resp.json().get("models",[])], "connected":True}
except Exception as e: return {"models":[],"connected":False,"error":str(e)}
@app.get("/api/openrouter/models")
def openrouter_models(user:dict=Depends(require_auth)):
s=_load_settings();api_key=s.get("openrouter_api_key","");base_url=s.get("openrouter_url","https://openrouter.ai/api/v1").rstrip("/")
if not api_key: return {"models":[],"connected":False,"error":"API 키가 설정되지 않았습니다"}
try:
resp=httpx.get(f"{base_url}/models",headers={"Authorization":f"Bearer {api_key}","HTTP-Referer":"https://voicescript.local"},timeout=12.0)
resp.raise_for_status()
all_models=resp.json().get("data",[])
vision=[m["id"] for m in all_models if any(k in m["id"].lower() for k in ["vision","claude-3","gemini","gpt-4o","llava","pixtral","qwen-vl","deepseek-vl"])]
return {"models":[m["id"] for m in all_models],"vision_models":vision,"connected":True,"total":len(all_models)}
except httpx.HTTPStatusError as e: return {"models":[],"connected":False,"error":f"HTTP {e.response.status_code}"}
except Exception as e: return {"models":[],"connected":False,"error":str(e)}
@app.post("/api/openrouter/test")
def openrouter_test(api_key:str=Form(...),base_url:str=Form("https://openrouter.ai/api/v1"),user:dict=Depends(require_auth)):
try:
resp=httpx.get(f"{base_url.rstrip('/')}/models",headers={"Authorization":f"Bearer {api_key}","HTTP-Referer":"https://voicescript.local"},timeout=10.0)
resp.raise_for_status();count=len(resp.json().get("data",[]))
return {"ok":True,"message":f"연결 성공 — {count}개 모델 사용 가능"}
except httpx.HTTPStatusError as e: return {"ok":False,"message":f"인증 실패 (HTTP {e.response.status_code})"}
except Exception as e: return {"ok":False,"message":f"연결 실패: {str(e)}"}
@app.get("/api/settings")
def get_settings(user:dict=Depends(require_auth)):
s=_load_settings();result=dict(s)
if result.get("openrouter_api_key"):
key=result["openrouter_api_key"]
result["openrouter_api_key_masked"]=key[:8]+"..."+key[-4:] if len(key)>12 else "****"
else: result["openrouter_api_key_masked"]=""
result["openrouter_api_key"]="";return result
@app.post("/api/settings")
def save_settings_endpoint(
stt_ollama_model:str=Form(""),ocr_ollama_model:str=Form(""),
cpu_threads:str=Form("0"),stt_timeout:str=Form("0"),ollama_timeout:str=Form("600"),
openrouter_url:str=Form("https://openrouter.ai/api/v1"),openrouter_api_key:str=Form(""),
openrouter_stt_model:str=Form(""),openrouter_ocr_model:str=Form(""),
user:dict=Depends(require_auth),
):
def _int(v,d):
try: return max(0,int(v))
except: return d
current=_load_settings()
final_key=openrouter_api_key.strip() if openrouter_api_key.strip() else current.get("openrouter_api_key","")
data={"stt_ollama_model":stt_ollama_model,"ocr_ollama_model":ocr_ollama_model,
"cpu_threads":_int(cpu_threads,0),"stt_timeout":_int(stt_timeout,0),"ollama_timeout":_int(ollama_timeout,600),
"openrouter_url":openrouter_url.strip() or "https://openrouter.ai/api/v1",
"openrouter_api_key":final_key,"openrouter_stt_model":openrouter_stt_model,"openrouter_ocr_model":openrouter_ocr_model}
_save_settings(data);return {"ok":True,"settings":{k:v for k,v in data.items() if k!="openrouter_api_key"}}
@app.get("/api/admin/users")
def admin_list_users(user:dict=Depends(require_admin)): return {"users":list_users()}
@app.post("/api/admin/users")
def admin_create_user(username:str=Form(...),password:str=Form(...),
perm_stt:str=Form("false"),perm_ocr:str=Form("false"),
allowed_stt_models:str=Form(""),allowed_ocr_models:str=Form(""),user:dict=Depends(require_admin)):
def _p(s): return [m.strip() for m in s.split(",") if m.strip()]
perms={"stt":perm_stt.lower()=="true","ocr":perm_ocr.lower()=="true",
"allowed_stt_models":_p(allowed_stt_models),"allowed_ocr_models":_p(allowed_ocr_models)}
ok,msg=create_user(username,password,perms)
if not ok: raise HTTPException(400,msg)
return {"ok":True,"message":msg}
@app.put("/api/admin/users/{username}")
def admin_update_user(username:str,perm_stt:str=Form("false"),perm_ocr:str=Form("false"),
password:str=Form(""),allowed_stt_models:str=Form(""),allowed_ocr_models:str=Form(""),user:dict=Depends(require_admin)):
def _p(s): return [m.strip() for m in s.split(",") if m.strip()]
perms={"stt":perm_stt.lower()=="true","ocr":perm_ocr.lower()=="true",
"allowed_stt_models":_p(allowed_stt_models),"allowed_ocr_models":_p(allowed_ocr_models)}
ok,msg=update_user(username,perms,password or None)
if not ok: raise HTTPException(400,msg)
return {"ok":True,"message":msg}
@app.delete("/api/admin/users/{username}")
def admin_delete_user(username:str,user:dict=Depends(require_admin)):
ok,msg=delete_user(username)
if not ok: raise HTTPException(400,msg)
return {"ok":True,"message":msg}
@app.post("/api/cleanup")
def cleanup(user:dict=Depends(require_auth)): return {"removed":_cleanup_outputs()}
# ════════════════════════════════════════════════════════════════
# 유틸
# ════════════════════════════════════════════════════════════════
def _check_size(request:Request):
cl=request.headers.get("content-length")
if cl and int(cl)>MAX_UPLOAD_BYTES*20: raise HTTPException(413,"파일이 너무 큽니다")
def _cleanup_outputs():
if OUTPUT_KEEP_SECS==0: return 0
cutoff=time.time()-OUTPUT_KEEP_SECS;removed=0
for f in glob.glob(os.path.join(OUTPUT_DIR,"*")):
try:
if os.path.getmtime(f)<cutoff: os.remove(f);removed+=1
except: pass
return removed
def _ext(fn): return fn.rsplit(".",1)[-1].lower() if "." in fn else ""
async def _save_upload(file:UploadFile,path:str):
written=0
async with aiofiles.open(path,"wb") as f:
while chunk:=await file.read(1024*1024):
written+=len(chunk)
if written>MAX_UPLOAD_BYTES:
await f.close();os.remove(path)
raise HTTPException(413,f"파일이 너무 큽니다. 최대 {MAX_UPLOAD_BYTES//1024//1024}MB")
await f.write(chunk)
app.mount("/", StaticFiles(directory="static", html=True), name="static")
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