from collections.abc import Callable
from itertools import zip_longest

import demistomock as demisto  # noqa: F401
import urllib3
from CommonServerPython import *  # noqa: F401
from gql import Client, gql
from gql.transport.requests import RequestsHTTPTransport

from CommonServerUserPython import *

# Disable insecure warnings
urllib3.disable_warnings()


CAST_MAPPING: dict[str, Callable] = {
    "string": str,
    "boolean": bool,
    "number": arg_to_number,
}


def execute_query(client: Client, args: dict) -> CommandResults:
    query = gql(args["query"])
    variables_names = argToList(args.get("variables_names", ""))
    variables_values = argToList(args.get("variables_values", ""))
    variables_types = argToList(args.get("variables_types", ""))
    if len(variables_names) != len(variables_values) or (variables_types and len(variables_types) != len(variables_values)):
        raise ValueError("The variable lists are not in the same length")
    variables = {}
    for variable_name, variable_value, variable_type in zip_longest(variables_names, variables_values, variables_types):
        if variable_type:
            variable_value = CAST_MAPPING[variable_type](variable_value)
        elif variable_value.isdigit():
            variable_value = int(variable_value)
        elif variable_value.lower() in {"true", "false"}:
            variable_value = bool(variable_value)
        variables[variable_name] = variable_value
    result = client.execute(query, variable_values=variables)
    if (result_size := sys.getsizeof(result)) > (max_result_size := float(args.get("max_result_size", 10))) * 10000:
        raise ValueError(f"Result size {result_size / 10000} KBs is larger then max result size {max_result_size} KBs")
    command_results_args = {
        "readable_output": tableToMarkdown("GraphQL Query Results", result),
        "raw_response": result,
        "outputs": result if argToBoolean(args.get("populate_context_data")) else None,
        "outputs_prefix": "GraphQL",
    }
    if args.get("outputs_key_field"):
        command_results_args["outputs_key_field"] = args.get("outputs_key_field")
    return CommandResults(**command_results_args)


def main() -> None:
    command = demisto.command()
    try:
        params = demisto.params()
        request_params = {
            "url": params.get("url"),
            "verify": not params.get("insecure", False),
            "retries": 3,
        }
        if credentials := params.get("credentials"):
            if (identifier := credentials.get("identifier", "")).startswith("_header:"):
                header_name = identifier.split("_header:")[1]
                header_value = credentials.get("password", "")
                request_params["headers"] = {header_name: header_value}
            else:
                request_params["auth"] = (identifier, credentials.get("password"))

        transport = RequestsHTTPTransport(**request_params)
        handle_proxy()
        fetch_schema_from_transport = params.get("fetch_schema_from_transport", True)
        if fetch_schema_from_transport is None:
            fetch_schema_from_transport = True
        client = Client(
            transport=transport,
            fetch_schema_from_transport=fetch_schema_from_transport,
        )

        demisto.debug(f"Command being called is {command}")
        if command == "test-module":
            with client as session:
                if not fetch_schema_from_transport:
                    # When schema fetching is disabled, the connection alone doesn't verify
                    # the GraphQL endpoint. Execute an introspection query to confirm connectivity.
                    session.execute(gql("{__typename}"))
            return_results("ok")
        elif command == "graphql-query":
            return_results(execute_query(client, demisto.args()))
        elif command == "graphql-mutation":
            return_results(execute_query(client, demisto.args()))
        else:
            raise NotImplementedError(f"Received an un-supported command: {command}")
    except Exception as e:
        return_error(f"Failed to execute {command} command. Error: {e!s}")


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