// **********************************************************************************************************
//    coeTimer.cs
//    6/1/2022
//    NGI - Next Generation Interceptor
//    
//    Contract No. HQ0856-21-C-0003/1022000209
//    
//    THIS DOCUMENT DOES NOT CONTAIN TECHNOLOGY OR TECHNICAL DATA CONTROLLED UNDER EITHER THE U.S. 
//    INTERNATIONAL TRAFFIC IN ARMS REGULATIONS OR THE U.S. EXPORT ADMINISTRATION REGULATIONS.
//    
//    RAYTHEON PROPRIETARY: THIS DOCUMENT CONTAINS DATA OR INFORMATION PROPRIETARY TO RAYTHEON 
//    COMPANY AND IS RESTRICTED TO USE ONLY BY PERSONS AUTHORIZED BY RAYTHEON COMPANY IN WRITING TO USE IT. 
//    DISCLOSURE TO UNAUTHORIZED PERSONS WOULD LIKELY CAUSE SUBSTANTIAL COMPETITIVE HARM TO RAYTHEON 
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//    TO OR COPIED OR USED BY PERSONS OUTSIDE RAYTHEON COMPANY WITHOUT THE EXPRESS WRITTEN APPROVAL OF 
//    RAYTHEON COMPANY.
//    
//    UNPUBLISHED WORK - COPYRIGHT RAYTHEON COMPANY.
//    
//    DESTRUCTION NOTICE: FOR CLASSIFIED DOCUMENTS FOLLOW THE PROCEDURES IN DOD 5220.22-M, 
//    NATIONAL INDUSTRIAL SECURITY PROGRAM OPERATING MANUAL, FEBRUARY 2006, 
//    INCORPORATING CHANGE 1, MARCH 28, 2013, CHAPTER 5, SECTION 7, OR DODM 5200.01-VOLUME 3, 
//    DOD INFORMATION SECURITY PROGRAM: PROTECTION OF CLASSIFIED INFORMATION, ENCLOSURE 3, 
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//    
//    CONTROLLED BY: MISSILE DEFENSE AGENCY
//    CONTROLLED BY: GROUND-BASED MIDCOURSE DEFENSE PROGRAM OFFICE
//    CUI CATEGORY: CTI 
//    DISTRIBUTION/DISSEMINATION CONTROL: F 
//    POC: Alex Kravchenko (1118268)
// **********************************************************************************************************

//\\<Unclassified>
//----------------------------------------------------------------------------//
//                                 UNCLASSIFIED                               //
//----------------------------------------------------------------------------//
//\\<\Unclassified>

//\\<UnlimitedRights>
//----------------------------------------------------------------------------//
// Copyright %(copyright)s Raytheon Company.                                  //
// This software was developed pursuant to Contract Number %(contractNumber)s //
// with the U.S. government. The U.S. government's rights in and to this      //
// copyrighted software are as specified in DFARS 252.227-7014 which was made //
// part of the above contract.                                                //
//----------------------------------------------------------------------------//
//\\<\UnlimitedRights>

//\\<EximUndetermined>
//----------------------------------------------------------------------------//
// WARNING - This document contains technical data and / or technology whose  //
// export or disclosure to Non-U.S. Persons, wherever located, is restricted  //
// by the International Traffic in Arms Regulations (ITAR) (22 C.F.R.         //
// Section 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. //
// Section 730-774). This document CANNOT be exported (e.g., provided to a    //
// supplier outside of the United States) or disclosed to a Non-U.S. Person,  //
// wherever located, until a final jurisdiction and classification            //
// determination has been completed and approved by Raytheon, and any         //
// required U.S. Government approvals have been obtained. Violations are      //
// subject to severe criminal penalties.                                      //
//----------------------------------------------------------------------------//
//\\<\EximUndetermined>

using System;
using System.Runtime.InteropServices;

namespace Raytheon.Common.Coe
{
    //
    //
    //
    // Timer
    //
    //
    //
    public class coeTimer : IDisposable
    {

        #region DLLImports
        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Timer_Create_Dynamic")]
        private static extern IntPtr OE_Timer_Create_Dynamic(IntPtr Name,
                                                             coe.ScopeType Scope,
                                                             uint TimerFormat,
                                                             TimerType TimerKind,
                                                             IntPtr Clock,
                                                             IntPtr ApplicationContext,
                                                             out coe.Status Status);

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Timer_Delete")]
        public static extern coe.Status OE_Timer_Delete(IntPtr _obj);

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Timer_Associate")]
        private static extern coe.Status OE_Timer_Associate(IntPtr _obj,
                                                            IntPtr Event,
                                                            TriggerType Trigger);

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Timer_Set_Relative")]
        private static extern coe.Status OE_Timer_Set_Relative(IntPtr _obj,
                                                               uint TimeInterval);

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Timer_Resume")]
        private static extern coe.Status OE_Timer_Resume(IntPtr _obj);

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Timer_Cancel")]
        private static extern coe.Status OE_Timer_Cancel(IntPtr _obj);

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Environment_get_The_System_Clock_Handler")]
        private static extern IntPtr OE_Environment_get_The_System_Clock_Handler();

        [DllImport(coe.coeDLL, CallingConvention = CallingConvention.Cdecl, EntryPoint = "OE_Clock_Handler_Convert_To_Time_Interval")]
        private static extern IntPtr OE_Clock_Handler_Convert_To_Time_Interval(IntPtr _obj,
                                                                               uint Interval,
                                                                               TimerResolutionType Resolution,
                                                                               out uint TimeInterval);
        #endregion

        public enum TriggerType : int
        {
            TIMER_EXPIRED = 1
        };

        public enum TimerType : int
        {
            PERIODIC = 0,
            ONE_SHOT = 1
        };

        public enum TimerResolutionType : int
        {
            MINUTE = 0,
            SECOND = 1,
            MILLISECOND = 2,
            MICROSECOND = 3,
            FRAME = 4
        };

        private bool _disposed = false;
        private IntPtr _handle = IntPtr.Zero;
        private const uint _timerRelative = 1;
        private readonly coeEvent _timerEvent;

        public coeTimer(TimerType Type)
        {
            _handle = OE_Timer_Create_Dynamic(IntPtr.Zero, coe.ScopeType.OE_Local, _timerRelative, Type, OE_Environment_get_The_System_Clock_Handler(), IntPtr.Zero, out coe.Status oe_status);
            if (oe_status != coe.Status.SUCCESS)
            {
                _handle = IntPtr.Zero;
                throw new Exception("Unable to create OE_Timer.  Error = " + oe_status);
            }
            else
            {
                _timerEvent = new coeEvent();
            }
        }

        ~coeTimer()
        {
            Dispose(false);
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected void Dispose(bool disposing)
        {
            if (_disposed) return;

            if (disposing)
            {
            }
            if (_handle != IntPtr.Zero)
            {
                _timerEvent.Disable();
                OE_Timer_Delete(_handle);
                _handle = IntPtr.Zero;
            }
            _disposed = true;
        }

        internal IntPtr Handle
        {
            get { return _handle; }
        }

        public coe.Status Set(uint interval, TimerResolutionType resolution)
        {
            OE_Clock_Handler_Convert_To_Time_Interval(OE_Environment_get_The_System_Clock_Handler(), interval, resolution, out uint timerInterval);
            return OE_Timer_Set_Relative(_handle, timerInterval);
        }

        public coe.Status Set(uint Interval)
        {
            return Set(Interval, TimerResolutionType.MILLISECOND);
        }

        public coe.Status Resume()
        {
            return OE_Timer_Resume(_handle);
        }

        public coe.Status Cancel()
        {
            return OE_Timer_Cancel(_handle);
        }

        public coe.Status Associate(coeEventFlag eventFlag, uint mask, TriggerType trigger)
        {
            coe.Status Status;

            _timerEvent.SetNotification(eventFlag, mask);
            Status = OE_Timer_Associate(_handle, _timerEvent.Handle, trigger);
            _timerEvent.Enable();
            return Status;
        }
    }

}

//\\<Unclassified>
//----------------------------------------------------------------------------//
//                                 UNCLASSIFIED                               //
//----------------------------------------------------------------------------//
//\\<\Unclassified>