/* Copyright (c) Citrix Systems Inc. 
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met: 
 * 
 * *   Redistributions of source code must retain the above 
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 *     following disclaimer. 
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 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
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using System.Linq;
using XenAdmin.Core;
using XenAdmin.Diagnostics.Hotfixing;
using XenAdmin.Diagnostics.Problems;
using XenAdmin.Diagnostics.Problems.HostProblem;
using XenAPI;


namespace XenAdmin.Diagnostics.Checks
{
    class HostHasHotfixCheck : Check
    {
        private readonly HotfixFactory hotfixFactory = new HotfixFactory();
        public HostHasHotfixCheck(Host host)
            : base(host)
        {
        }

        public override Problem RunCheck()
        {
            if (!Host.IsLive)
                return new HostNotLiveWarning(this, Host);

            if (Helpers.SanibelOrGreater(Host) && !Helpers.CreedenceOrGreater(Host)
                && hotfixFactory.Hotfix(HotfixFactory.HotfixableServerVersion.SanibelToClearwater).ShouldBeAppliedTo(Host))
            {
                return new HostDoesNotHaveHotfix(this, Host);
            }

            if (Helpers.BostonOrGreater(Host) && !Helpers.SanibelOrGreater(Host)
                && hotfixFactory.Hotfix(HotfixFactory.HotfixableServerVersion.Boston).ShouldBeAppliedTo(Host))
            {
                return new HostDoesNotHaveHotfix(this, Host);
            }

            if (Helpers.CowleyOrGreater(Host) && !Helpers.BostonOrGreater(Host)
                && hotfixFactory.Hotfix(HotfixFactory.HotfixableServerVersion.Cowley).ShouldBeAppliedTo(Host))
            {
                return new HostDoesNotHaveHotfix(this, Host);
            }

            if (Helpers.MidnightRideOrGreater(Host) && !Helpers.CowleyOrGreater(Host)
                && hotfixFactory.Hotfix(HotfixFactory.HotfixableServerVersion.MNR).ShouldBeAppliedTo(Host))
            {
                return new HostDoesNotHaveHotfix(this, Host);
            }
            return null;
        }

        public override string Description
        {
            get { return Messages.HOTFIX_CHECK; }
        }
    }
}