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 *     following disclaimer. 
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 *     following disclaimer in the documentation and/or other 
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
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using System;
using System.Collections.Generic;
using XenAdmin.Core;
using XenAdmin.Diagnostics.Problems;
using XenAdmin.Diagnostics.Problems.PoolProblem;
using XenAPI;

namespace XenAdmin.Diagnostics.Checks
{
    class VSwitchControllerCheck : HostPostLivenessCheck
    {
        private readonly Dictionary<string, string> _installMethodConfig;
        private readonly Pool _pool;
        private XenServerVersion _newVersion;

        public VSwitchControllerCheck(Host host, XenServerVersion newVersion)
            : base(host)
        {
            _newVersion = newVersion;
            _pool = Helpers.GetPoolOfOne(Host?.Connection);
        }

        public VSwitchControllerCheck(Host host, Dictionary<string, string> installMethodConfig)
            : base(host)
        {
            _installMethodConfig = installMethodConfig;
            _pool = Helpers.GetPoolOfOne(Host?.Connection);
        }

        public override string Description => Messages.CHECKING_VSWITCH_CONTROLLER;

        protected override Problem RunHostCheck()
        {
            if (!_pool.vSwitchController() || Helpers.StockholmOrGreater(Host))
                return null;

            //update case
            if (_newVersion != null)
            {
                if (_newVersion.Version.CompareTo(new Version(BrandManager.ProductVersion82)) >= 0)
                    return new VSwitchControllerProblem(this, _pool);
                return null;
            }

            //upgrade case
            string upgradePlatformVersion = null;

            if (_installMethodConfig != null)
                Host.TryGetUpgradeVersion(Host, _installMethodConfig, out upgradePlatformVersion, out _);

            // we don't know the upgrade version, so add generic warning
            // (this is the case of the manual upgrade or when the rpu plugin doesn't have the function)
            if (string.IsNullOrEmpty(upgradePlatformVersion))
                return new VSwitchControllerWarning(this, _pool);
                
            // we know they are upgrading to Stockholm or greater, so block them
            if (Helpers.StockholmOrGreater(upgradePlatformVersion))
                return new VSwitchControllerProblem(this, _pool);

            return null;
        }
    }
}