🎉 first commit

src/services/auth.py

@@ -0,0 +1,64 @@
+from pydantic import BaseModel
+from fastapi import Depends, FastAPI, APIRouter, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
+from passlib.context import CryptContext
+from jose import JWTError, jwt
+from datetime import datetime, timedelta
+from ..services.users import *
+from ..services.security import *
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/token")
+
+#### Classes ####################################################
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+
+class TokenData(BaseModel):
+    username: str | None = None
+
+#### Classes ####################################################
+
+
+
+async def authenticate_user(username: str, password: str):
+    user = await security_get_user(username)
+    if not user:
+        return False
+    if not await security_verify_password(password, user.password):
+        return False
+    return user
+
+
+def create_access_token(data: dict, expires_delta: timedelta | None = 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
+
+
+async def get_current_user(token: str = Depends(oauth2_scheme)):
+    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 = TokenData(username=username)
+    except JWTError:
+        raise credentials_exception
+    user = await get_user(username=token_data.username)
+    if user is None:
+        raise credentials_exception
+    return User(**user.dict())