init app of test arena

asf-cloud-server/testarena/backend/app/auth.py

@@ -0,0 +1,59 @@
+from datetime import datetime, timedelta
+from typing import Optional
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi.security import OAuth2PasswordBearer
+from fastapi import Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from . import crud, models, schemas
+from .dependencies import get_db
+
+SECRET_KEY = "YOUR_SECRET_KEY_HERE_PLEASE_CHANGE_IN_PROD"
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="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, expires_delta: Optional[timedelta] = None):
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=15)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+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
+        token_data = schemas.TokenData(username=username)
+    except JWTError:
+        raise credentials_exception
+    user = crud.get_user_by_username(db, username=token_data.username)
+    if user is None:
+        raise credentials_exception
+    return user
+
+def get_current_active_user(current_user: models.User = Depends(get_current_user)):
+    return current_user
+
+def get_current_admin_user(current_user: models.User = Depends(get_current_user)):
+    if current_user.role != models.UserRole.admin:
+        raise HTTPException(status_code=400, detail="Not enough permissions")
+    return current_user