from CommonServerPython import *


def check_field(field_value, regex=None):
    if regex:
        if re.search(regex, field_value):
            return True
    else:
        if field_value:
            return True
    return False


def poll_field(args: dict[str, Any]) -> CommandResults:
    field = args.get("field")
    regex = args.get("regex")
    ignore_case = argToBoolean(args.get("ignore_case", "False"))
    regex_ignore_case_flag = re.IGNORECASE if ignore_case else 0
    regex = re.compile(regex, regex_ignore_case_flag) if regex else None

    incident = demisto.incidents()[0]

    data = {"field": field, "exists": False}

    if field in incident:
        data["exists"] = check_field(incident.get(field), regex)

    else:
        custom_fields = incident.get("CustomFields", {})
        if field in custom_fields:
            data["exists"] = check_field(custom_fields.get(field), regex)

    command_results = CommandResults(
        outputs_key_field="field",
        outputs_prefix="CheckFieldValue",
        outputs=data,
        readable_output="The field exists." if data["exists"] else "The field does not exist.",
        raw_response=data,
    )
    return command_results


def main():
    try:
        return_results(poll_field(demisto.args()))
    except Exception as ex:
        demisto.error(traceback.format_exc())  # print the traceback
        return_error(f"Failed to execute CheckFieldValue script. Error: {ex!s}")


""" ENTRY POINT """

if __name__ in ("__main__", "__builtin__", "builtins"):
    main()