// /**
//  * File: Hostalive.cs
//  * Author: haraldwolff
//  *
//  * This file and it's content is copyrighted by the Author and / or copyright holder.
//  * Any use wihtout proper permission is illegal and may lead to legal actions.
//  *
//  *
//  **/
using System;
using ln.types;
using ln.skyscanner.entities;
using ln.perfdb;
using System.Net.NetworkInformation;
using ln.logging;
using ln.perfdb.storage;
namespace ln.skyscanner.checks
{
    public class Hostalive : SkyCheck
    {
        Ping Ping { get; }

        public Hostalive()
            : base("hostalive")
        {
            Ping = new Ping();
        }

        public override bool IsCritical => true;
        public override bool IsValid(Node node) => node.PrimaryIP != null;

        public override void Check(SkyChecker skyChecker,ref SkyCheckState checkState,Node node)
        {
            long roundTripTime = 0;
            int success = 0;
            int n;

            for (n = 0; n < 4; n++)
            {
                PingReply reply = Ping.Send(node.PrimaryIP, 250);
                if (reply.Status == IPStatus.Success)
                {
                    success++;
                    roundTripTime += reply.RoundtripTime;
                }
            }

            float fSuccess = (float)success / (float)n;

            checkState.WritePerformanceValue("replies", fSuccess, 0.8, double.MaxValue, 0.6, double.MaxValue);
            if (success > 0)
            {
                roundTripTime /= success;
                checkState.WritePerformanceValue("rta", roundTripTime, 0, 40, 0, 80);
            }

            checkState.BaseCheckState = CheckState.OK;
        }
    }
}