using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;
using System.Threading;
using Microsoft.Win32;
using System.IO;
using Microsoft.DirectX.DirectInput;
using System.Runtime.InteropServices;
using System.Collections;

namespace Fusion_Control_Centre_UberMDX
{
    public partial class MainMDX : Form
    { 
        #region Constructor and Initialization of Fusion Control Centre Uber MDX Edition...
        public MainMDX(bool showSplashScreen,
                       bool useBasicGraphics,
                       bool input_useThreading,
                       bool input_rapeRegistry,
                       bool input_useLiteVersion)
        {
            useThreading = input_useThreading;
            SetThreadRegionalSettings(System.Threading.Thread.CurrentThread);

            InitializeComponent();
            DEBUG_InitializeTesting();
            if (input_rapeRegistry)
            {
                UpdateRegistry();
            }
            if (showSplashScreen)
            {
                SetupSplashScreen();
            }

            MDX_Graphics_Mode = GraphicsMode.DIRECTX;
            if (useBasicGraphics)
            {
                MDX_Graphics_Mode = GraphicsMode.GDI;
            }
            if (input_useLiteVersion)
            {
                MDX_Graphics_Mode = GraphicsMode.LITE;
            }

            SetupMDX_GraphicsArea();
            SetupMDX_LogicSection();

            SetupSpeech();
            RemoteControlClass.InitializeRemoteControl(this);
            COM_Initialize();
            SetupTimersAndThreads();

            bool USB_active = true;
            try
            {
                if (!USB_CommunicationClass.Setup_USB_CommunicationClass())
                {
                    USB_active = false;
                }
            }
            catch (DllNotFoundException e)
            {
                USB_active = false;
            }
            Setup_BrainRelationship();

            this.MouseDown += new MouseEventHandler(MDX_Form_MouseClick_DOWN);
            this.MouseUp += new MouseEventHandler(MDX_Form_MouseClick_UP);
            this.FormClosing += new FormClosingEventHandler(MainMDX_FormClosing);
            this.Paint += new PaintEventHandler(MDX_Render);
            this.Resize += new EventHandler(MainMDX_Resize);
            

            if (_SCF != null)
            {
                _SCF.Die();
            }
            this.StartPosition = FormStartPosition.CenterScreen;
            int _widthScreenResolution = Screen.PrimaryScreen.Bounds.Width;
            int _heightScreenResolution = Screen.PrimaryScreen.Bounds.Height;
            this.Location = new Point((int)(_widthScreenResolution / 2) - (int)(this.Width / 2), (int)(_heightScreenResolution / 2) - (int)(this.Height / 2));
            SetupHiddenOperations();
            InitializeTimersAndThreads();
            ReadRegionalSettings();
            DEBUG_ShowAllDebuggingWindows();
        }

        private void ReadRegionalSettings()
        {
            Regional_NumberStringSeperator = System.Threading.Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalSeparator;
            Regional_NumberStringSeperator = ".";
            SetThreadRegionalSettings(THREAD_IO);
            SetThreadRegionalSettings(THREAD_Logic);
        }

        private void SetThreadRegionalSettings(Thread t)
        {
            if (t == null) { return; }
            System.Globalization.CultureInfo ci = System.Globalization.CultureInfo.GetCultureInfo("en-US");
            t.CurrentCulture = ci;
            return;
        }

        private void DEBUG_InitializeTesting()
        {
            //Nothing at the moment
        }

        private void DEBUG_ShowAllDebuggingWindows()
        {
            foreach (Form _f in DEBUG_FormsToShow)
            {
                if (!_f.IsDisposed)
                {
                    _f.Show();
                }
            }
        }
        private void DEBUG_HideAllDebuggingWindows()
        {
            foreach (Form _f in DEBUG_FormsToShow)
            {
                _f.Hide();
            }
        }

        private void UpdateRegistry()
        {
            try
            {
                RegistryKey registryAppLocation = Registry.LocalMachine.CreateSubKey(@"SOFTWARE\Fusion Control Centre\MDX", RegistryKeyPermissionCheck.ReadWriteSubTree);
                string[] _currentInstallPaths = registryAppLocation.GetValueNames();
                //bool _isOthers = false;
                bool _thisIsAlreadyAdded = false;
                int max_level = 1;
                string _valueName = "INSTALL_PATH";

                if (_currentInstallPaths.Length > 0)
                {
                    foreach (string _installPathTest in _currentInstallPaths)
                    {
                        if (_installPathTest.StartsWith("INSTALL_PATH_"))
                        {
                            int _tryParseINT = -1;
                            if (int.TryParse(_installPathTest.Substring("INSTALL_PATH_".Length), out _tryParseINT))
                            {
                                object _testPath = registryAppLocation.GetValue(_installPathTest);
                                if (_testPath.ToString().ToLower() == Application.ExecutablePath.ToLower())
                                {
                                    max_level = _tryParseINT;
                                    _thisIsAlreadyAdded = true;
                                }
                                else
                                {
                                    string _execPath = registryAppLocation.GetValue(_installPathTest).ToString();
                                    if (!File.Exists(_execPath))
                                    {
                                        registryAppLocation.DeleteValue(_installPathTest);
                                    }
                                    if (!_thisIsAlreadyAdded)
                                    {
                                        if (_tryParseINT >= max_level)
                                        {
                                            max_level = _tryParseINT + 1;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
                registryAppLocation.SetValue(_valueName + "_" + max_level.ToString(), (string)Application.ExecutablePath);
                return;
            }
            catch (UnauthorizedAccessException e)
            {
                MessageBox.Show("MDX does not have the neccessary permissions to write to the registry. Please close the program and run as an administrator");
            }
        }

        public void SetupMDX_GraphicsArea()
        {
            if (!SetUpMDXDevice())
            {
                MDX_Graphics_Mode = GraphicsMode.GDI;
            }
            
            if (!ReadInConfigurationFile())
            {
                DisplayMessageBox("Unknown Error in Configuration File", true);
                Application.Exit();
                return;
            }
            Sort_AllGUI_by_Z_OrderDepth();
        }

        public void SetupMDX_LogicSection()
        {
            PerformLogicCommands("all");
        }
        #endregion

        #region Configure Hidden Operations
        public void SetupHiddenOperations()
        {
            if (!RunProgramInSystemTray)
            {
                this.Show();
            }
            else
            {
                this.Hide();
            }
            if (HideCursor)
            {
                Cursor.Hide();
            }
            else
            {
                Cursor.Show();
            }
        }
        #endregion

        #region Setup Splash Screen
        public void SetupSplashScreen()
        {
            _SCF = new SplashScreenForm(this);
            _SCF.Show();
            _SCF.TopMost = true;
        }
        #endregion

        #region Verbose Debug Logging
        public static void MDX_DebugLogging(string SendThisStringForLogging)
        {
            if (Debug_VerboseLoggingEvent != null)
            {
                Debug_VerboseLoggingEvent(SendThisStringForLogging);
            }
        }
        #endregion

        /*
        protected override void OnPaintBackground(PaintEventArgs pevent)
        {

        }
        */

        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            UpdateDaGUI();
            //device.Clear(ClearFlags.Target, System.Drawing.Color.CornflowerBlue, 1.0f, 0);
            //device.Present();
        }

        #region Setup MDX Device
        public bool SetUpMDXDevice()
        {
            PresentParameters present_params = new PresentParameters();

            MDX_DebugLogging("Setting Up Display");
            this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.Opaque, true);
            if (MDX_Graphics_Mode == GraphicsMode.DIRECTX)
            {
                try
                {

                    MDX_PresentParameters = new PresentParameters();

                    MDX_PresentParameters.Windowed = true;
                    MDX_PresentParameters.SwapEffect = SwapEffect.Discard;
                    //MDX_PresentParameters.BackBufferWidth = this.ClientSize.Width;
                    //MDX_PresentParameters.BackBufferHeight = this.ClientSize.Height;
                    //MDX_PresentParameters.PresentationInterval = PresentInterval.Immediate;
                    MDX_PresentParameters.PresentationInterval = PresentInterval.Default;

                    try
                    {
                        MDX_Device = new Microsoft.DirectX.Direct3D.Device(0, Microsoft.DirectX.Direct3D.DeviceType.Hardware, this, Microsoft.DirectX.Direct3D.CreateFlags.HardwareVertexProcessing, MDX_PresentParameters);
                        MDX_DebugLogging("Hardware Processing Enabled");
                    }
                    catch (Exception)
                    {
                        MDX_Device = new Microsoft.DirectX.Direct3D.Device(0, Microsoft.DirectX.Direct3D.DeviceType.Hardware, this, Microsoft.DirectX.Direct3D.CreateFlags.SoftwareVertexProcessing, MDX_PresentParameters);
                        MDX_DebugLogging("Software Processing Enabled");
                    }

                    //Microsoft.DirectX.DirectInput.Device _d = new Microsoft.DirectX.DirectInput.Device(SystemGuid.Mouse);
                    //_d.SetCooperativeLevel(this, CooperativeLevelFlags.Foreground | CooperativeLevelFlags.NonExclusive);
                    MDX_Sprite_BackgroundImages = new Sprite(MDX_Device);
                    MDX_Sprite_NormalLayer = new Sprite(MDX_Device);

                    /*
                    MDX_Mouse = new Microsoft.DirectX.DirectInput.Device(SystemGuid.Mouse);
                    MDX_Mouse.SetCooperativeLevel(this, CooperativeLevelFlags.Foreground | CooperativeLevelFlags.NonExclusive);
                    MDX_Mouse.SetDataFormat(DeviceDataFormat.Mouse);
                    MDX_Mouse.Properties.AxisModeAbsolute = true;
                    MDX_Mouse.Acquire();
                    */
                    return true;
                }
                catch (Exception)
                {
                    MDX_Graphics_Mode = GraphicsMode.GDI;
                    return false;
                }
            }
            else
            {
                MDX_Graphics_Mode = GraphicsMode.GDI;
                return false;
            }
        }
        #endregion

        #region MDX Paint Render
        private void MDX_Render(object sender, PaintEventArgs e)
        {
            if (MDX_Device == null || MDX_Sprite_BackgroundImages == null || MDX_Sprite_NormalLayer == null)
            {
                return;
            }
            UpdateDaGUI();
        }
        #endregion

        #region Program Closing
        /*
        void MainMDX_ProgramClosing(object sender, FormClosingEventArgs e)
        {
            try
            {
                USB_CommunicationClass.THREAD_SAFETY_SENDOK = false;
                CloseAllOpenLogStreams();
                USB_CommunicationClass.ShutOffAllOutputs();
                USB_CommunicationClass.DisposeOfAllBrains();
            }
            catch (Exception)
            {
                //Error Closing the Program
                MessageBox.Show("Error Closing the Program... You shouldn't be seeing this. :(", "UH OH", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        */

        /*
        void MainMDX_FormClosed(object sender, FormClosedEventArgs e)
        {
            try
            {
                USB_CommunicationClass.THREAD_SAFETY_SENDOK = false;
                CloseAllOpenLogStreams();
                USB_CommunicationClass.ShutOffAllOutputs();
                USB_CommunicationClass.DisposeOfAllBrains();
                uint successOfComRevoke = COM_Revoke();
            }
            catch (Exception)
            {
                MessageBox.Show("Error Closing the Program... You shouldn't be seeing this. :(", "UH OH", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        */

        void MainMDX_FormClosing(object sender, FormClosingEventArgs e)
        {
            try
            {
                USB_CommunicationClass.THREAD_SAFETY_SENDOK = false;
                if (useThreading)
                {
                    THREAD_IO.Abort();
                    THREAD_Logic.Abort();
                }
                USB_CommunicationClass.ShutOffAllOutputs();
                USB_CommunicationClass.DisposeOfAllBrains();
                CloseAllOpenLogStreams();
                uint successOfComRevoke = COM_Revoke();
            }
            catch (Exception ERRORCLOSINGFORM_e)
            {
                Console.WriteLine(ERRORCLOSINGFORM_e.ToString());
                return;
            }
        }

        private delegate void DoCloseBrains();
        private event DoCloseBrains CloseProgramEvent;
        #endregion

        #region Setup & Initialize Timers/Threads
        public void SetupTimersAndThreads()
        {
            if (useThreading)
            {
                THREAD_Logic = new Thread(THREAD_UPDATE_Logic);
                THREAD_IO = new Thread(THREAD_UPDATE_IO);

                THREAD_Logic.Name = "Logic Thread";
                THREAD_IO.Name = "IO Thread";

                THREAD_Logic.IsBackground = true;
                THREAD_IO.IsBackground = true;

                GUI_Timer.Tick += new EventHandler(GUI_Timer_Tick);
                GUI_Timer.Enabled = false;
                GUI_Timer.Interval = 50;

                GC_Timer.Tick += new EventHandler(GC_Timer_Tick);
                GC_Timer.Enabled = false;
                GC_Timer.Interval = THREAD_GARBAGE_COLLECTION_INTERVAL;
            }
            else
            {
                MDX_DebugLogging("Initializing Timers");
                LogicTimer.Tick += new EventHandler(LogicTimer_Tick);
                LogicTimer.Enabled = false;
                LogicTimer.Interval = THREAD_LOGIC_SLEEP_INTERVAL;

                GUI_Timer.Tick += new EventHandler(GUI_Timer_Tick);
                GUI_Timer.Enabled = false;
                GUI_Timer.Interval = 50;

                IO_Timer.Tick += new EventHandler(IO_Timer_Tick);
                IO_Timer.Enabled = false;
                IO_Timer.Interval = THREAD_IO_SLEEP_INTERVAL;

                GC_Timer.Tick += new EventHandler(GC_Timer_Tick);
                GC_Timer.Enabled = false;
                GC_Timer.Interval = THREAD_GARBAGE_COLLECTION_INTERVAL;
            }
        }

        public void InitializeTimersAndThreads()
        {
            if (useThreading)
            {
                THREAD_Logic.Start();
                THREAD_IO.Start();
                GUI_Timer.Enabled = true;
                GC_Timer.Enabled = true;
            }
            else
            {
                LogicTimer.Enabled = true;
                IO_Timer.Enabled = true;
                GUI_Timer.Enabled = true;
                GC_Timer.Enabled = true;
            }
        }
        #endregion

        #region Timer Events
        private void LogicTimer_Tick(object sender, EventArgs e)
        {
            UPDATE_Logic();
        }

        private void IO_Timer_Tick(object sender, EventArgs e)
        {
            UPDATE_IO();
        }

        private void GUI_Timer_Tick(object sender, EventArgs e)
        {
            UPDATE_GUI();
        }

        void GC_Timer_Tick(object sender, EventArgs e)
        {
            GC.Collect();
        }
        #endregion

        #region Thread Events
        public void THREAD_UPDATE_Logic()
        {
            while (true)
            {
                DateTime _beginning = DateTime.Now;
                UPDATE_Logic();
                TimeSpan _totalTime = DateTime.Now.Subtract(_beginning);
                if (_totalTime.TotalMilliseconds > THREAD_LOGIC_SLEEP_INTERVAL) { }
                Thread.Sleep(THREAD_LOGIC_SLEEP_INTERVAL);
            }
        }

        /*
        public void THREAD_UPDATE_GUI()
        {
            while (true)
            {
                UPDATE_GUI();
                Thread.Sleep(GUI_Timer.Interval);
            }
        }
        */

        public void THREAD_UPDATE_IO()
        {
            USB_CommunicationClass.USB_CommunicationClass_LOOP();
        }

        /*
        public void THREAD_UPDATE_Output()
        {
            while (true)
            {
                UPDATE_Output();
                Thread.Sleep(OutputTimer.Interval);
            }
        }

        public void THREAD_UPDATE_Input()
        {
            while (true)
            {
                UPDATE_Input();
                Thread.Sleep(InputTimer.Interval);
            }
        }
        */
        #endregion

        #region Setup Brain Relationships
        public void Setup_BrainRelationship()
        {
            foreach (VirtualBrainClass VB in DEBUG_VirtualBrainList)
            {
                foreach (BrainID _brain in AllBrains)
                {
                    if (VB._human.ToLower() == _brain.humanName.ToLower())
                    {
                        VB.Initialize(_brain.version, this);
                        break;
                    }
                }
            }
            foreach (BrainID _FB in AllBrains)
            {
                foreach (DigitalOutputChannel _doc in AllDigitalOutputs)
                {
                    if (_doc.BrainID.ToLower() == _FB.humanName.ToLower())
                    {
                        if (_doc.Port >= 0 && _doc.Port < _FB.DigitalOutputIndexArray_EX.Length)
                        {
                            _FB.DigitalOutputIndexArray_EX[_doc.Port] = AllDigitalOutputs.IndexOf(_doc);
                            continue;
                        }
                    }
                }
                foreach (AnalogueInputChannel _aic in AllAnalogueInputs)
                {
                    if (_aic.BrainID.ToLower() == _FB.humanName.ToLower())
                    {
                        if (_aic.Port >= 0 && _aic.Port < _FB.AnalogueInputIndexArray_EX.Length)
                        {
                            _FB.AnalogueInputIndexArray_EX[_aic.Port] = AllAnalogueInputs.IndexOf(_aic);
                            if (_aic.id.ToLower() == _FB.Accurate_AnalogueScalingInput_Index_ReferenceID)
                            {
                                _FB.Accurate_AnalogueScalingInput_Index = _FB.AnalogueInputIndexArray_EX[_aic.Port];
                            }
                        }
                    }
                }
                foreach (DigitalInputChannel _dic in AllDigitalInputs)
                {
                    if (_dic.BrainID.ToLower() == _FB.humanName.ToLower())
                    {
                        if (_dic.Port >= 0 && _dic.Port < _FB.DigitalInputIndexArray_EX.Length)
                        {
                            _FB.DigitalInputIndexArray_EX[_dic.Port] = AllDigitalInputs.IndexOf(_dic);
                        }
                    }
                }

            }
        }
        #endregion

        #region Update Functions
        public void UPDATE_Logic()
        {
            PerformLogicCommands("logic");
            UpdateLogs("logic");
            COM_RefreshAllValues();
        }

        public void UPDATE_GUI()
        {
            UpdateDaGUI();
            PerformLogicCommands("gui");
            UpdateLogs("gui");
        }

        public void UPDATE_IO()
        {
            PerformLogicCommands("io");
            USB_CommunicationClass.DoUSB();
            UpdateLogs("io");
        }

        /*
        public void UPDATE_Output()
        {
            PerformLogicCommands("output");
            USB_OutputSteps();
            UpdateLogs("output");
        }

        public void UPDATE_Input()
        {
            USB_InputSteps();
            PerformLogicCommands("input");
            UpdateLogs("input");
        }
        */
        #endregion

        #region Degrees to Radians
        public double DegreesToRadians(double inDegrees)
        {
            return (double)((inDegrees * Math.PI) / (180.0f));
        }
        #endregion

        #region Error Message Box
        /// <summary>
        /// When an error occurs, make a message box for the user
        /// </summary>
        /// <param name="error">The main body text for the error message</param>
        public void DisplayMessageBox(string error)
        {
            if (_SCF != null)
            {
                _SCF.Hide();
            }
            if (MessageBox.Show(error, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error) == DialogResult.OK)
            {
                if (_SCF != null)
                {
                    _SCF.Show();
                }
            }
        }
        #endregion

        #region Fatal Error Message Box
        /// <summary>
        /// Fatal Error, so display the error and then close the program
        /// </summary>
        /// <param name="error"></param>
        /// <param name="isFatal">Should always be true when using this function</param>
        public void DisplayMessageBox(string error, bool isFatal)
        {
            if (_SCF != null && isFatal)
            {
                _SCF.Close();
            }
            else if (_SCF != null && !isFatal)
            {
                _SCF.Hide();
            }
            MessageBox.Show(error, "FATAL Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            if (isFatal)
            {
                
                //Environment.Exit(1);
                Application.Exit();
                return;
            }
            else if (_SCF != null && !isFatal)
            {
                _SCF.Show();
            }
        }
        #endregion

        #region Double Click System Tray Icon
        private void SystemTrayNotificationIcon_DoubleClick(object sender, EventArgs e)
        {
            MDX_ProgramForms_Show();
            this.WindowState = FormWindowState.Normal;
        }
        #endregion

        #region Main Form Resized
        void MainMDX_Resize(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                MDX_ProgramForms_Hide();
            }
        }
        #endregion

        #region Minimize To Tray
        public void MDX_ProgramForms_Hide()
        {
            if (MinimizeToSystemTray)
            {
                this.Hide();
                DEBUG_HideAllDebuggingWindows();
            }
        }
        public void MDX_ProgramForms_Show()
        {
            this.Show();
            DEBUG_ShowAllDebuggingWindows();
        }
        #endregion

        #region System Tray Menu Clicked
        private void SystemTrayContextMenuStrip_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
        {
            if (e.ClickedItem == SYSTRAY_CM_Restore)
            {
                MDX_ProgramForms_Show();
                this.WindowState = FormWindowState.Normal;
            }
            else if (e.ClickedItem == SYSTRAY_CM_Close)
            {
                this.Close();
            }
        }
        #endregion
    }
}