// /**
//  * File: Service.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.logging;
using System.Linq.Expressions;
using ln.perfdb;
namespace ln.skyscanner
{
    public abstract class Check
    {
        public readonly String CheckID;

        public DateTime LastCheck;
        public DateTime NextCheck;
        public TimeSpan CheckInterval;

        public long LastCheckTime;

        public String Name;

        public Check()
        {
            CheckInterval = TimeSpan.FromSeconds(60);
        }

        public Check(String checkID)
        {
            CheckID = checkID;
            CheckInterval = TimeSpan.FromSeconds(60);
        }

        public string GetPerfName(string perfName)
        {
            return string.Format("{0}_{1}",CheckID,perfName);
        }

        public void Mark()
        {
            NextCheck += CheckInterval;
            if (NextCheck < DateTime.Now)
                NextCheck = DateTime.Now + CheckInterval;
        }

        public void Run(IPerfFileProvider perfProvider)
        {
            long tStart = DateTimeOffset.Now.ToUnixTimeMilliseconds();

            try
            {
                CheckImplementation(perfProvider);

                LastCheck = DateTime.Now;
            } catch (Exception e)
            {
                Logging.Log(LogLevel.WARNING, "Check {0} caught exception: {1}", CheckID, e);
                Logging.Log(e);
            }

            LastCheckTime = DateTimeOffset.Now.ToUnixTimeMilliseconds() - tStart;
        }

        public abstract void CheckImplementation(IPerfFileProvider perfProvider);

        public override int GetHashCode()
        {
            return CheckID.GetHashCode();
        }
    }
}