97 lines
3.2 KiB
Python
97 lines
3.2 KiB
Python
"""Auth service: password hashing, JWT, user queries."""
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from datetime import datetime, timedelta, timezone
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from fastapi import HTTPException, status
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from jose import JWTError, ExpiredSignatureError, jwt
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from passlib.context import CryptContext
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.config import settings
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from app.models.user import User, UserRole
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_pwd = CryptContext(schemes=["bcrypt"], deprecated="auto")
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def hash_password(password: str) -> str:
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return _pwd.hash(password)
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def verify_password(plain: str, hashed: str) -> bool:
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return _pwd.verify(plain, hashed)
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def create_access_token(user_id: str, role: str) -> str:
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expire = datetime.now(timezone.utc) + timedelta(minutes=settings.jwt_expire_minutes)
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payload = {"sub": user_id, "role": role, "exp": expire}
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return jwt.encode(payload, settings.jwt_secret, algorithm=settings.jwt_algorithm)
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def decode_access_token(token: str) -> dict:
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try:
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return jwt.decode(token, settings.jwt_secret, algorithms=[settings.jwt_algorithm])
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except ExpiredSignatureError:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Token expired")
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except JWTError:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid token")
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async def get_user_by_id(db: AsyncSession, user_id: str) -> User | None:
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result = await db.execute(select(User).where(User.id == user_id))
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return result.scalar_one_or_none()
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async def get_user_by_username(db: AsyncSession, username: str) -> User | None:
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result = await db.execute(select(User).where(User.username == username))
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return result.scalar_one_or_none()
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async def authenticate_user(db: AsyncSession, username: str, password: str) -> User:
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user = await get_user_by_username(db, username)
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if not user:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid credentials")
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# Check lock
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if user.locked_until and user.locked_until > datetime.utcnow():
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raise HTTPException(
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status_code=status.HTTP_423_LOCKED,
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detail=f"Account locked until {user.locked_until.isoformat()}",
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)
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if not verify_password(password, user.hashed_password):
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user.login_attempts += 1
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if user.login_attempts >= 5:
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user.locked_until = datetime.utcnow() + timedelta(minutes=15)
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await db.commit()
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid credentials")
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# Success — reset
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user.login_attempts = 0
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user.locked_until = None
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await db.commit()
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return user
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async def create_user(db: AsyncSession, username: str, email: str, password: str) -> User:
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result = await db.execute(select(User))
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existing_count = len(result.scalars().all())
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if existing_count == 0:
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role = UserRole.owner
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is_approved = True
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else:
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role = UserRole.viewer
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is_approved = False
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user = User(
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username=username,
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email=email,
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hashed_password=hash_password(password),
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role=role,
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is_approved=is_approved,
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)
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db.add(user)
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await db.commit()
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await db.refresh(user)
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return user
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