cloud-api/src/iam/service.py

"""
Business logic reusable functions related to IAM

Exports:
 - service_key_dependency: bool: verifies request headers contain the correct api key for the service
"""

from typing import Annotated

from src.service.models import Service
from src.database import db_dependency
from src.schemas import ResourceName
from src.auth.exceptions import UnauthorizedException

from fastapi import Request, Depends


def valid_service_key(db: db_dependency, request: Request, rn: ResourceName) -> bool:
	api_key = request.headers.get("X-API-Key", None)
	if not api_key:
		raise UnauthorizedException("Missing API key")
	service = rn.service
	result = (
		db.query(Service)
		.filter(Service.name == service)
		.filter(Service.api_key == api_key)
		.first()
	)
	if result is None:
		raise UnauthorizedException("Invalid API key")

	return True


service_key_dependency = Annotated[bool, Depends(valid_service_key)]