initial commit

backend/app/auth.py

@@ -0,0 +1,55 @@
+from datetime import datetime, timedelta
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+from app.database import get_db
+from app.models.models import User
+
+SECRET_KEY = "your-secret-key-change-in-production-make-it-very-long-and-secure"
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 1440  # 24 часа
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="api/auth/login")
+
+def verify_password(plain_password, hashed_password):
+    return pwd_context.verify(plain_password, hashed_password)
+
+def get_password_hash(password):
+    return pwd_context.hash(password)
+
+def create_access_token(data: dict):
+    to_encode = data.copy()
+    expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    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)):
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        username: str = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+    except JWTError as e:
+        print(f"JWT Error: {e}")
+        raise credentials_exception
+    
+    user = db.query(User).filter(User.username == username).first()
+    if user is None:
+        raise credentials_exception
+    
+    if user.is_banned:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Ваш аккаунт заблокирован"
+        )
+    
+    return user