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using System;
using System.Collections.Generic;
using System.Text;

using XenAdmin.Core;

using XenAPI;

namespace XenAdmin.Actions
{
    public class GpuAssignAction : PureAsyncAction
    {
        VM vm;
        GPU_group gpu_group;
        private VGPU_type vgpuType;

        public GpuAssignAction(VM vm, GPU_group gpu_group, VGPU_type vgpuType)
            : base(vm.Connection, "Set GPU", true)
        {
            this.vm = vm;
            this.gpu_group = gpu_group;
            this.vgpuType = vgpuType;
        }

        protected override void Run()
        {
            // Remove any existing VGPUs before adding new ones
            foreach (VGPU vgpu in vm.Connection.ResolveAll(vm.VGPUs))
                VGPU.destroy(Session, vgpu.opaque_ref);

            if (gpu_group == null)  // The VM doesn't want a VGPU
                return;

            // Add the new VGPU
            string device = "0";  // fixed at the moment, see PR-1060
            Dictionary<string, string> other_config = new Dictionary<string,string>();

            if (Helpers.FeatureForbidden(vm, Host.RestrictVgpu))
                VGPU.async_create(Session, vm.opaque_ref, gpu_group.opaque_ref, device, other_config);
            else if (vgpuType != null)
                VGPU.async_create(Session, vm.opaque_ref, gpu_group.opaque_ref, device,
                                  other_config, vgpuType.opaque_ref);
        }
    }
}