// ----------------------------------------------------------------------------
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ----------------------------------------------------------------------------

namespace Microsoft.Singularity.Security
{
    using System;

    using Microsoft.Singularity.Channels;
    using Microsoft.Singularity.Directory;
    using Microsoft.Singularity.Security;

    /// <summary>
    /// This is a client-library proxy to the security service.
    /// </summary>

    public class SecurityDiagnostics
    {
        private ChannelPool! pool;

        public SecurityDiagnostics()
        {
            pool = new ChannelPool();
        }

        public string! GetStatistics()
        {
            string result = String.Empty;
            SecurityDiagnosticsContract.Imp! imp = pool.Acquire();
            try {
                imp.SendGetStatistics();
                switch receive {
                case imp.GetStatisticsAck(stats):
                    result = Bitter.ToString2(stats);
                    delete stats;
                    break;
                }
            }
            finally {
                pool.Release(imp);
            }
            return result;
        }

        public void ClearStatistics()
        {
            SecurityDiagnosticsContract.Imp! imp = pool.Acquire();
            try {
                imp.SendClearStatistics();
                switch receive {
                case imp.Ack():
                    break;
                }
            }
            finally {
                pool.Release(imp);
            }
        }

        public void Disable(bool yes)
        {
            SecurityDiagnosticsContract.Imp! imp = pool.Acquire();
            try {
                imp.SendDisable(yes);
                switch receive {
                case imp.Ack():
                    break;
                }
            }
            finally {
                pool.Release(imp);
            }
        }

        public void FlushCaches()
        {
            SecurityDiagnosticsContract.Imp! imp = pool.Acquire();
            try {
                imp.SendFlushCaches();
                switch receive {
                case imp.Ack():
                    break;
                }
            }
            finally {
                pool.Release(imp);
            }
        }
    }
}