اولین نسخه بک‌اند آرامش پلازا

app/auth.py

@@ -0,0 +1,59 @@
+from datetime import datetime, timedelta, timezone
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from sqlalchemy.orm import Session
+
+from app.config import settings
+from app.database import get_db
+from app.models import AdminUser
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def create_access_token(data: dict) -> str:
+    to_encode = data.copy()
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    return jwt.encode(to_encode, settings.SECRET_KEY, algorithm="HS256")
+
+
+def authenticate_admin(db: Session, username: str, password: str) -> AdminUser | None:
+    user = db.query(AdminUser).filter(AdminUser.username == username).first()
+    if not user or not verify_password(password, user.hashed_password):
+        return None
+    return user
+
+
+def get_current_admin(
+    token: str = Depends(oauth2_scheme),
+    db: Session = Depends(get_db),
+) -> AdminUser:
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="توکن نامعتبر یا منقضی شده است",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = jwt.decode(token, settings.SECRET_KEY, algorithms=["HS256"])
+        username: str | None = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+    except JWTError:
+        raise credentials_exception
+
+    user = db.query(AdminUser).filter(AdminUser.username == username).first()
+    if user is None:
+        raise credentials_exception
+    return user