#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (C) 2019 tribe29 GmbH - License: GNU General Public License v2
# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
# conditions defined in the file COPYING, which is part of this source code package.

# NOTE: Careful when replacing the *-import below with a more specific import. This can cause
# problems because it might remove variables from the check-context which are necessary for
# resolving legacy discovery results such as [("SUMMARY", "diskstat_default_levels")]. Furthermore,
# it might also remove variables needed for accessing discovery rulesets.
from cmk.base.check_legacy_includes.aws import *  # pylint: disable=wildcard-import,unused-wildcard-import


def check_aws_ec2_summary(item, params, parsed):
    instances_by_state = {}
    long_output = []
    for instance in parsed:
        instance_private_dns_name = instance["PrivateDnsName"]
        instance_id = instance["InstanceId"]
        instance_state = instance["State"]["Name"]
        instances_by_state.setdefault(instance_state, []).append(instance_id)
        long_output.append("[%s] %s: %s" % (instance_id, instance_private_dns_name, instance_state))

    yield 0, "Instances: %s" % sum([len(v) for v in instances_by_state.values()])
    for instance_state, instances in instances_by_state.items():
        yield 0, "%s: %s" % (instance_state, len(instances))

    if long_output:
        yield 0, "\n%s" % "\n".join(long_output)


check_info["aws_ec2_summary"] = {
    "parse_function": parse_aws,
    "inventory_function": discover_single,
    "check_function": check_aws_ec2_summary,
    "service_description": "AWS/EC2 Summary",
}
