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 *     following disclaimer. 
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 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
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 */

using XenAPI;


namespace XenAdmin.Actions
{
    public class DeleteVIFAction : PureAsyncAction
    {
        private VIF _vif;

        public DeleteVIFAction(VIF vif, bool suppressHistory = false)
            : base(vif.Connection,
                string.Format(Messages.ACTION_VIF_DELETING_TITLE, vif.NetworkName(), vif.Connection.Resolve(vif.VM).Name()),
                suppressHistory)
        {
            _vif = vif;
            VM = vif.Connection.Resolve(vif.VM);
        }

        /// <summary>
        /// List of XML RPC calls made by the class
        /// (although not needed explicitly here as this class is a pure async action)
        /// </summary>
        public static readonly string[] XmlRpcMethods = {"VIF.unplug", "VIF.destroy"};

        protected override void Run()
        {
            Description = Messages.ACTION_VIF_DELETING;

            if (VM.power_state == vm_power_state.Running
                && VIF.get_allowed_operations(Session, _vif.opaque_ref).Contains(vif_operations.unplug))
            {
                try
                {
                    VIF.unplug(Session, _vif.opaque_ref);
                }
                catch (Failure exn)
                {
                    // Ignore the failure if it's already detached -- throw everything else.
                    if (exn.ErrorDescription[0] != Failure.DEVICE_ALREADY_DETACHED)
                        throw;
                }
            }

            VIF.destroy(Session, _vif.opaque_ref);

            Description = Messages.ACTION_VIF_DELETED;
        }
    }
}