227 lines
7.4 KiB
Python
227 lines
7.4 KiB
Python
"""Authentication router for login and user management."""
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import secrets
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from fastapi import APIRouter, HTTPException, Depends, Header
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from typing import Annotated
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from baby_monitor.models.auth import (
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LoginRequest,
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LoginResponse,
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RegisterRequest,
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RegisterResponse,
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)
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from baby_monitor.repositories import (
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get_token_repository,
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get_credentials_repository,
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get_user_repository,
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)
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from baby_monitor.repositories.dependencies.get_invitation_repository import (
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get_invitation_repository,
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)
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from baby_monitor.repositories.interfaces import (
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TokenRepositoryInterface,
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CredentialsRepositoryInterface,
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UserRepositoryInterface,
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InvitationRepositoryInterface,
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)
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router = APIRouter(prefix="/api", tags=["authentication"])
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def verify_token(
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authorization: Annotated[str | None, Header()] = None,
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token_repo: TokenRepositoryInterface = Depends(get_token_repository),
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) -> int:
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"""Verify the bearer token and return user_id."""
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if not authorization:
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raise HTTPException(status_code=401, detail="Not authenticated")
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try:
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scheme, token = authorization.split()
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if scheme.lower() != "bearer":
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raise HTTPException(status_code=401, detail="Invalid authentication scheme")
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except ValueError:
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raise HTTPException(status_code=401, detail="Invalid authorization header")
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user_id = token_repo.verify(token)
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if user_id is None:
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raise HTTPException(status_code=401, detail="Invalid or expired token")
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return user_id
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def verify_admin(
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user_id: Annotated[int, Depends(verify_token)],
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user_repo: Annotated[UserRepositoryInterface, Depends(get_user_repository)],
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) -> int:
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"""Verify the user is an admin and return user_id."""
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# First try to get user from database
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user = user_repo.get_by_id(user_id)
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if user:
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# Database user - check is_admin field
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if not user.get("is_admin", False):
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raise HTTPException(status_code=403, detail="Admin access required")
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return user_id
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# If not in database but has valid token with user_id=1,
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# it's the environment-based admin (only assigned during env admin login)
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if user_id == 1:
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return user_id
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# User not found and not environment admin
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raise HTTPException(status_code=401, detail="User not found")
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@router.post("/login", response_model=LoginResponse)
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def login(
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credentials: LoginRequest,
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token_repo: Annotated[TokenRepositoryInterface, Depends(get_token_repository)],
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user_repo: Annotated[UserRepositoryInterface, Depends(get_user_repository)],
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creds_repo: Annotated[
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CredentialsRepositoryInterface, Depends(get_credentials_repository)
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],
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) -> LoginResponse:
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"""
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API endpoint for user authentication.
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Returns user info and access token on successful login.
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Raises 401 on invalid credentials.
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"""
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# First check if it's a database user
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user = user_repo.get_by_username(credentials.username)
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if user:
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# TODO: Use proper password hashing (bcrypt/argon2)
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# For now, compare plain text (matches registration)
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if user["hashed_password"] == credentials.password:
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# Generate a secure random token
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access_token = secrets.token_urlsafe(32)
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token_repo.store(access_token, user_id=user["id"], ttl=3600)
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return LoginResponse(
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message="Login successful",
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username=credentials.username,
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access_token=access_token,
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is_admin=user.get("is_admin", False),
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)
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# Fallback to admin credentials from environment
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if creds_repo.verify_admin_credentials(credentials.username, credentials.password):
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# Generate a secure random token
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access_token = secrets.token_urlsafe(32)
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# Store token with user_id (hardcoded 1 for admin)
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token_repo.store(access_token, user_id=1, ttl=3600)
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return LoginResponse(
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message="Login successful",
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username=credentials.username,
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access_token=access_token,
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is_admin=True,
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)
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raise HTTPException(status_code=401, detail="Invalid username or password")
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@router.post("/logout")
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def logout(
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user_id: Annotated[int, Depends(verify_token)],
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token_repo: TokenRepositoryInterface = Depends(get_token_repository),
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) -> dict[str, str]:
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"""Logout and invalidate the current token."""
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# Note: We'd need to pass the token itself, not user_id
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# This is simplified - in production, extract token from verify_token
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return {"message": "Logged out successfully"}
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@router.get("/verify-invitation")
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def verify_invitation(
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token: str,
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invitation_repo: Annotated[
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InvitationRepositoryInterface, Depends(get_invitation_repository)
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],
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) -> dict[str, bool]:
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"""Verify if an invitation token is valid."""
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is_valid = invitation_repo.verify_invitation(token)
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if not is_valid:
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raise HTTPException(status_code=400, detail="Invalid or expired invitation")
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return {"valid": True}
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@router.post("/register", response_model=RegisterResponse)
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def register(
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request: RegisterRequest,
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user_repo: Annotated[UserRepositoryInterface, Depends(get_user_repository)],
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invitation_repo: Annotated[
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InvitationRepositoryInterface, Depends(get_invitation_repository)
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],
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token_repo: Annotated[TokenRepositoryInterface, Depends(get_token_repository)],
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) -> RegisterResponse:
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"""
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Register a new user with an invitation token.
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Verifies the invitation, creates the user, consumes the invitation,
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and returns an authentication token.
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"""
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# Verify invitation token
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if not invitation_repo.verify_invitation(request.invitation_token):
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raise HTTPException(
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status_code=400,
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detail="Invalid or expired invitation token",
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)
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# Check if username already exists
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existing_user = user_repo.get_by_username(request.username)
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if existing_user:
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raise HTTPException(
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status_code=400,
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detail="Username already exists",
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)
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# Create the new user
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# TODO: Hash password before storing (currently plain text)
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user = user_repo.create(
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username=request.username,
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hashed_password=request.password,
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)
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# Consume the invitation token
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invitation_repo.consume_invitation(request.invitation_token)
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# Generate authentication token
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access_token = secrets.token_urlsafe(32)
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token_repo.store(access_token, user_id=user["id"], ttl=3600)
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return RegisterResponse(
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message="Registration successful",
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username=user["username"],
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access_token=access_token,
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is_admin=user.get("is_admin", False),
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)
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@router.get("/me")
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def get_current_user(
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user_id: Annotated[int, Depends(verify_token)],
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user_repo: Annotated[UserRepositoryInterface, Depends(get_user_repository)],
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creds_repo: Annotated[
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CredentialsRepositoryInterface, Depends(get_credentials_repository)
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],
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) -> dict:
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"""Get current user info including admin status."""
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user = user_repo.get_by_id(user_id)
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# If user not found in DB, might be env-based admin
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if not user:
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# Return admin info from environment
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return {
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"id": user_id,
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"username": creds_repo.get_admin_username(),
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"is_admin": True, # Env-based admin is always admin
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}
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return {
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"id": user["id"],
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"username": user["username"],
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"is_admin": user.get("is_admin", False),
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}
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