from msgraph_beta import GraphServiceClient as BetaClient
from msgraph_beta.generated.models.application import Application as Application
from msgraph_beta.generated.models.on_premises_publishing import OnPremisesPublishing
from msgraph_beta.generated.models.external_authentication_type import ExternalAuthenticationType

request_body = Application(
    on_premises_publishing = OnPremisesPublishing(
        external_authentication_type=ExternalAuthenticationType.Passthru,
        internal_url="http://localhost:65001",
        external_url="https://whatever",
        is_http_only_cookie_enabled=False,
        is_on_prem_publishing_enabled=True,
        is_persistent_cookie_enabled=False,
        is_secure_cookie_enabled=False,
        is_state_session_enabled=False,
        is_translate_host_header_enabled=False,
        is_translate_links_in_body_enabled=False,
        is_backend_certificate_validation_enabled=False
    ),
)

from kiota_serialization_json.json_serialization_writer import JsonSerializationWriter
writer = JsonSerializationWriter()
request_body.serialize(writer)
print(writer.get_serialized_content().decode('utf-8'))

{"@odata.type": "#microsoft.graph.application", "onPremisesPublishing": {"externalAuthenticationType": "passthru", "externalUrl": "https://whatever", "internalUrl": "http://localhost:65001", "isBackendCertificateValidationEnabled": false, "isHttpOnlyCookieEnabled": false, "isOnPremPublishingEnabled": true, "isPersistentCookieEnabled": false, "isSecureCookieEnabled": false, "isStateSessionEnabled": false, "isTranslateHostHeaderEnabled": false, "isTranslateLinksInBodyEnabled": false}}

        APIError
        Code: 400
        message: None
        error: MainError(additional_data={}, code='InvalidJson_BadRequest', details=None, inner_error=InnerError(additional_data={}, client_request_id='xxxx', date=datetime.datetime(2026, 7, 10, 8, 49, 27), odata_type=None, request_id='xxxx'), message='Valid JSON content expected.', target=None)

        request_body = BetaApplication(
            additional_data = {
                "microsoft.graph.onPremisesPublishing": {
                    "@odata.type": "#microsoft.graph.onPremisesPublishing",
                    "externalAuthenticationType": "passthru",
                    "internalUrl": "http://localhost:65001",
                    "externalUrl": EXTERNAL_URL,
                    "isHttpOnlyCookieEnabled": False,
                    "isOnPremPublishingEnabled": True,
                    "isPersistentCookieEnabled": False,
                    "isSecureCookieEnabled": False,
                    "isStateSessionEnabled": False,
                    "isTranslateHostHeaderEnabled": False,
                    "isTranslateLinksInBodyEnabled": False,
                    "isBackendCertificateValidationEnabled": False
                }
            }
        )