import json
from flask import jsonify
from services import SessionService, OrganizationService
from models import Session

def validate_session_file(data) -> tuple | Session:
    """
    Check if the session file is valid, and return the session object if it is
    :param data: session file data (json)
    :return: Session object or error response
    """
    if "token" not in data:
        return jsonify({"error": "No session token"}), 400
    session_token = data["token"]

    session = SessionService.get_session(session_token)
    if not session:
        return jsonify({"error": "Not authenticated"}), 401

    org = OrganizationService.get_organization(session.org_id)
    if not org:
        return jsonify({"error": "Organization not found"}), 404

    status = OrganizationService.get_user_status(org, session.user_id)
    if status != "active":
        return jsonify({"error": "User is not active"}), 403

    return session