aboba

backend/app/views/auth/services.py

@@ -0,0 +1,99 @@
+from fastapi import status, HTTPException, Depends
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+from jose import JWTError, jwt
+from typing import Annotated, Union
+from datetime import timedelta
+from passlib.context import CryptContext
+
+from ...db import models
+from . import schemas
+from ...dependencies import get_db
+from ...config import jwt_config
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
+
+
+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 get_user_by_id(db: Session, user_id: int):
+    return db.query(models.User).filter(models.User.id == user_id).first()
+
+
+def get_user_by_username(db: Session, username: int):
+    return db.query(models.User).filter(models.User.username == username).first()
+
+
+def authenticate_user(db: Session, username: str, password: str):
+    user = get_user_by_username(db, username)
+    if not user:
+        return False
+    if not verify_password(password, user.hashed_password):
+        return False
+    return user
+
+
+def create_access_token(data: dict, expires_delta: Union[timedelta, None] = None):
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.now(timezone.utc) + expires_delta
+    else:
+        expire = datetime.now(timezone.utc) + timedelta(minutes=15)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(
+        to_encode, jwt_config.SECRET_KEY, algorithm=jwt_config.ALGORITHM
+    )
+    return encoded_jwt
+
+
+def create_user(
+    db: Session, username: str, plain_password: str, name: Union[str, None] = None
+) -> schemas.User:
+    user = models.User(
+        username=username,
+        name=name,
+        hashed_password=get_password_hash(plain_password),
+    )
+    db.add(user)
+    db.commit()
+    return schemas.User(user)
+
+
+async def get_current_user(
+    token: Annotated[str, Depends(oauth2_scheme)],
+    db: Annotated[Session, Depends(get_db)],
+) -> schemas.User:
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = jwt.decode(
+            token, jwt_config.SECRET_KEY, algorithms=[jwt_config.ALGORITHM]
+        )
+        username: str = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+        token_data = TokenData(username=username)
+    except JWTError:
+        raise credentials_exception
+    user = get_user(fake_users_db, username=token_data.username)
+    if user is None:
+        raise credentials_exception
+    return user
+
+
+async def get_current_active_user(
+    current_user: Annotated[schemas.User, Depends(get_current_user)],
+):
+    if current_user.disabled:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user