Feat: 모델 다운로드 API 구현

ai/app/api/yolo/model.py

@@ -2,8 +2,9 @@ from fastapi import APIRouter, HTTPException, File, UploadFile
 from schemas.model_create_request import ModelCreateRequest
 from services.init_model import create_pretrained_model, create_default_model, upload_tmp_model
 from services.load_model import load_model
-from utils.file_utils import get_model_paths, delete_file, join_path, save_file
+from utils.file_utils import get_model_paths, delete_file, join_path, save_file, get_file_name
 import re
+from fastapi.responses import FileResponse
 
 router = APIRouter()
 
@@ -80,5 +81,15 @@ def upload_model(project_id:int, file: UploadFile = File(...)):
 
 
 @router.get("/download")
-def model_download():
-    pass    
+async def download_model(model_path: str):
+    pattern = r'^resources[/\\]projects[/\\](\d+)[/\\]models[/\\]([a-f0-9\-]+)\.pt$'
+    if not re.match(pattern, model_path):
+        raise HTTPException(status_code=400,
+                            detail= "Invalid path format")
+    try:
+        filename = get_file_name(model_path)
+        # 파일 응답 반환
+        return FileResponse(model_path, media_type='application/octet-stream', filename=filename)
+    except FileNotFoundError:
+        raise HTTPException(status_code=404,
+                        detail= "모델을 찾을 수 없습니다.")

ai/app/utils/file_utils.py

@@ -169,3 +169,8 @@ def save_file(path, file):
 
     with open(path, "wb") as buffer:
         shutil.copyfileobj(file.file, buffer)
+
+def get_file_name(path):
+    if not os.path.exists(path):
+        raise FileNotFoundError()
+    return os.path.basename(path)