91 lines
3.0 KiB
Python
91 lines
3.0 KiB
Python
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from datetime import timedelta
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from fastapi import APIRouter, Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordRequestForm
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from .. import config
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from ..schemas.auth import Token, User
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from ..services.security import create_access_token
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from ..services.user_service import UserService
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def get_auth_router(user_service: UserService):
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router = APIRouter(prefix="/auth", tags=["auth"])
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verify_token = build_token_verifier(user_service)
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@router.post("/token", response_model=Token)
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async def login(form_data: OAuth2PasswordRequestForm = Depends()):
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user = user_service.authenticate(form_data.username, form_data.password)
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if not user:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Incorrect username or password",
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headers={"WWW-Authenticate": "Bearer"},
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)
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access_token = create_access_token(
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data={"sub": user.username},
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expires_delta=timedelta(minutes=config.ACCESS_TOKEN_EXPIRE_MINUTES),
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)
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return Token(access_token=access_token)
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@router.get("/me", response_model=User)
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async def me(current_user: User = Depends(get_current_user_dependency(verify_token))):
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return current_user
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@router.post("/change-password", response_model=User)
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async def change_password(
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payload: PasswordChangePayload,
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current_user: User = Depends(get_current_user_dependency(verify_token)),
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):
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if payload.new_password != payload.confirm_password:
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raise HTTPException(status_code=400, detail="Passwords do not match")
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return user_service.set_password(current_user.username, payload.new_password)
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return router
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from pydantic import BaseModel
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class PasswordChangePayload(BaseModel):
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new_password: str
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confirm_password: str
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def build_token_verifier(user_service: UserService):
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from jose import JWTError, jwt
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def verify(token: str) -> User:
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(
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token, config.JWT_SECRET_KEY, algorithms=[config.JWT_ALGORITHM]
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)
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username: str = payload.get("sub")
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if username is None:
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raise credentials_exception
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except JWTError:
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raise credentials_exception
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user = user_service.get_user(username)
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if user is None:
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raise credentials_exception
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return User(username=user.username)
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return verify
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def get_current_user_dependency(token_verifier):
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from fastapi import Depends
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from fastapi.security import OAuth2PasswordBearer
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/token")
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async def get_current_user(token: str = Depends(oauth2_scheme)) -> User:
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return token_verifier(token)
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return get_current_user
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