/* 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 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer. 
 * *   Redistributions in binary form must reproduce the above 
 *     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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 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
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 */

using System;
using System.Collections.Generic;
using System.Text;
using XenAdmin.Network;
using XenAPI;
using XenAdmin.Core;


namespace XenAdmin.Actions
{
    public class DestroyPolicyAction <T> :PureAsyncAction where T: XenObject<T>
    {
        private List<T> _selectedToDelete;
        public DestroyPolicyAction(IXenConnection connection,List<T> deleteVMPPs) : base(connection, Messages.DELETE_POLICIES)
        {
            _selectedToDelete = deleteVMPPs;
            Pool = Helpers.GetPool(connection);
        }

        protected override void Run()
        {
            if (typeof(T) == typeof(VMPP))
            {
                var selectedToDelete = _selectedToDelete as List<VMPP>;
                foreach (var vmpp in selectedToDelete)
                {
                    Description = string.Format(Messages.DELETING_VMPP, vmpp.Name);
                    foreach (var vmref in vmpp.VMs)
                    {
                        VM.set_protection_policy(Session, vmref.opaque_ref, null);
                    }
                    try
                    {
                        VMPP.destroy(Session, vmpp.opaque_ref);
                    }
                    catch (Exception e)
                    {
                        if (!e.Message.StartsWith("Object has been deleted"))
                            throw e;
                    }
                }
                Description = Messages.DELETED_VMPP;
            }
            else
            {
                var selectedToDelete = _selectedToDelete as List<VMSS>;
                foreach (var vmss in selectedToDelete)
                {
                    Description = string.Format(Messages.DELETING_VMSS, vmss.Name);
                    foreach (var vmref in vmss.VMs)
                    {
                        VM.set_schedule_snapshot(Session, vmref.opaque_ref, null);
                    }
                    try
                    {
                        VMSS.destroy(Session, vmss.opaque_ref);
                    }
                    catch (Exception e)
                    {
                        if (!e.Message.StartsWith("Object has been deleted"))
                            throw e;
                    }
                }
                Description = Messages.DELETED_VMSS;
            }
        }
    }
}