초기 커밋 - EV AS 관리 시스템

backend/auth.py

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+import os
+import bcrypt
+from datetime import datetime, timedelta
+from typing import Optional
+from jose import JWTError, jwt
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+from database import get_db
+import models
+
+SECRET_KEY = os.getenv("SECRET_KEY", "changeme")
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_HOURS = 24
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
+
+def hash_password(password: str) -> str:
+    """비밀번호 bcrypt 해시 생성"""
+    salt = bcrypt.gensalt(rounds=12)
+    return bcrypt.hashpw(password.encode("utf-8"), salt).decode("utf-8")
+
+def verify_password(plain: str, hashed: str) -> bool:
+    """비밀번호 검증"""
+    try:
+        return bcrypt.checkpw(plain.encode("utf-8"), hashed.encode("utf-8"))
+    except Exception:
+        return False
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    to_encode = data.copy()
+    expire = datetime.utcnow() + (expires_delta or timedelta(hours=ACCESS_TOKEN_EXPIRE_HOURS))
+    to_encode.update({"exp": expire})
+    return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+
+def get_current_user(
+    token: str = Depends(oauth2_scheme),
+    db: Session = Depends(get_db)
+) -> models.User:
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="인증 정보가 유효하지 않습니다.",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        user_id: str = payload.get("sub")
+        if user_id is None:
+            raise credentials_exception
+    except JWTError:
+        raise credentials_exception
+
+    user = db.query(models.User).filter(
+        models.User.id == int(user_id),
+        models.User.is_active == True
+    ).first()
+    if user is None:
+        raise credentials_exception
+    return user
+
+def require_role(*roles):
+    def checker(current_user: models.User = Depends(get_current_user)):
+        if current_user.role not in roles:
+            raise HTTPException(status_code=403, detail="권한이 없습니다.")
+        return current_user
+    return checker
+
+require_admin       = require_role("admin")
+require_mechanic    = require_role("mechanic", "admin")
+require_manufacturer = require_role("manufacturer", "admin")