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


namespace XenAdmin.Actions
{
    public class AssignVMsToPolicyAction<T>:PureAsyncAction where T : XenObject<T>
    {

        private IVMPolicy _policy;
        private List<XenRef<VM>> _selectedVMs;

        public AssignVMsToPolicyAction(IVMPolicy policy, List<XenRef<VM>> selectedVMs, bool suppressHistory)
            : base(policy.Connection, (typeof(T) == typeof(VMPP) ? Messages.ASSIGN_PROTECTION_POLICY_NOAMP : Messages.ASSIGN_VMSS_POLICY_NOAMP), suppressHistory)
        {
            _policy = policy;
            _selectedVMs = selectedVMs;
            Pool = Helpers.GetPool(policy.Connection);

        }

        protected override void Run()
        {
            Description = typeof(T) == typeof(VMPP) ? Messages.ASSIGNING_PROTECTION_POLICY : Messages.ASSIGNING_VMSS_POLICY;

            foreach (var xenRef in _policy.VMs)
            {
                _policy.set_vm_policy(Session, xenRef, null);
            }

            foreach (var xenRef in _selectedVMs)
            {
                _policy.set_vm_policy(Session, xenRef, _policy.opaque_ref);
            }

            Description = (typeof(T) == typeof(VMPP)) ? Messages.ASSIGNED_PROTECTION_POLICY : Messages.ASSIGNED_VMSS_POLICY;
        }
    }

    public class RemoveVMsFromPolicyAction<T> : PureAsyncAction where T : XenObject<T>
    {
        private List<XenRef<VM>> _selectedVMs;
        private IVMPolicy _policy;

        public RemoveVMsFromPolicyAction(IVMPolicy policy, List<XenRef<VM>> selectedVMs)
            : base(policy.Connection, 
            selectedVMs.Count == 1 ?
            string.Format(typeof(T) == typeof(VMPP) ? Messages.REMOVE_VM_FROM_POLICY : Messages.REMOVE_VM_FROM_VMSS, policy.Connection.Resolve(selectedVMs[0]), policy.Name) :
            string.Format(typeof(T) == typeof(VMPP) ? Messages.REMOVE_VMS_FROM_POLICY : Messages.REMOVE_VMS_FROM_VMSS, policy.Name))
        {
            _policy = policy;
            _selectedVMs = selectedVMs;
            Pool = Helpers.GetPool(policy.Connection);
        }

        protected override void Run()
        {
            Description = typeof(T) == typeof(VMPP) ? Messages.REMOVING_VMS_FROM_POLICY : Messages.REMOVING_VMS_FROM_VMSS;

            foreach (var xenRef in _selectedVMs)
                _policy.set_vm_policy(Session, xenRef, null);
                

            Description = typeof(T) == typeof(VMPP) ? Messages.REMOVED_VMS_FROM_POLICY : Messages.REMOVED_VMS_FROM_VMSS;
        }
    }
}