using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using ORiN2.interop.CAO;
namespace FDProvSample
{
    public partial class Sample : Form
    {
        private delegate void SetTextCallback(CaoMessage msg);  // Delegate for OnMessage

        private CaoEngine caoEng;
        private CaoWorkspaces caoWss;
        private CaoWorkspace caoWs;
        private CaoControllers caoCtrls;
        private CaoVariable caoVarOneShot;

        // Scanner objects
        private CaoController caoCtrl;
        public Sample()
        {
            InitializeComponent();
            //CreateEngine
            caoEng = new CaoEngine();
            caoWss = caoEng.Workspaces;
            caoWs = caoWss.Item(0);
            caoCtrls = caoWs.Controllers;
            
            comboBoxFormat.SelectedIndex = 0;
            comboBoxTrigger.SelectedIndex = 0;

            groupBoxOneShot.Enabled = false;
            groupBoxOnMessage.Enabled = false;
        }

        ~Sample()
        {
            
            caoVarOneShot = null;
            caoCtrl = null;
            caoCtrls = null;
            caoWs = null;
            caoWss = null;
            caoEng = null;
            System.GC.Collect();
        }

        private void connectProvider()
        {
            String connectOp = string.Format("Conn=eth:{0}:{1},Trigger={2}, Format={3}, Timeout={4}, ReadPort={5}"
                , textBoxIP.Text, numericUpDownPort.Value.ToString()
                , (comboBoxTrigger.SelectedIndex+1).ToString()
                , comboBoxFormat.SelectedIndex.ToString()
                , numericUpDownTimeout.Value.ToString()
                , numericUpDownReadPort.Value.ToString());
            try
            {
                // Create object and connect with FD
                caoCtrl = caoWs.AddController("FD", "CaoProv.DENSO.FD", "", connectOp);

                // Enable command buttons
                groupBox1.Enabled = false;
                buttonDisconnect.Enabled = true;
                buttonConnect.Enabled = false;
                if (comboBoxTrigger.SelectedIndex == 0)
                {
                    groupBoxOnMessage.Enabled = true;
                }
                else
                {
                    groupBoxOneShot.Enabled = true;
                }
                
                // Regist Event Handler
                caoCtrl.OnMessage += new _ICaoControllerEvents_OnMessageEventHandler(OnMessage);

                // Set Variable Object
                caoVarOneShot = caoCtrl.AddVariable("@ONE_SHOT", "500");
                
            }
            catch (Exception ex)
            {
                disconnectProvider();
                MessageBox.Show(ex.Message);
            }
        }

        private void disconnectProvider()
        {
            // Disconnect from the controller
            if (caoCtrl != null)
            {
                CaoControllers ctrls = caoWs.Controllers;
                ctrls.Remove(caoCtrl.Index);
                                
                int a = Marshal.ReleaseComObject(caoCtrl);
                caoCtrl = null;
                
                Marshal.ReleaseComObject(caoVarOneShot);
                caoVarOneShot = null;

                Marshal.ReleaseComObject(ctrls);
                ctrls = null;
                System.GC.Collect();
            }
            buttonDisconnect.Enabled = false;
            buttonConnect.Enabled = true;
            groupBox1.Enabled = true;
            groupBoxOneShot.Enabled = false;
            groupBoxOnMessage.Enabled = false;
        }

        private void buttonOneShot_Click(object sender, EventArgs e)
        {
            try
            {
                dynamic temp = caoVarOneShot.Value;
                textBoxReadData.Text = Convert.ToString(temp[0]);
                textBoxScannerID.Text = Convert.ToString(temp[1]);
                textBoxReadStable.Text = Convert.ToString(temp[2]);
                textBoxSymbol.Clear();
                foreach(var strTemp in temp[3])
                {
                    textBoxSymbol.Text += strTemp+" ";
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void buttonAddCtrl_Click(object sender, EventArgs e)
        {
            connectProvider();
        }

        // OnMessage
        private void OnMessage(CaoMessage pICaoMsg)
        {
            try
            {
                switch (pICaoMsg.Number)
                {
                    case 1:                        
                        SetTextCallback SetMsg = new SetTextCallback(SetText);
                        Invoke(SetMsg, pICaoMsg);
                        break;
                    default:
                        break;
                }
            }
            catch (Exception ex)
            {
                
                MessageBox.Show(ex.Message);
            }
        }

        private void SetText(CaoMessage msg)
        {
            textBoxReadData_Mes.Text = Convert.ToString(msg.Value[0]);
            textBoxScannerID_Mes.Text = Convert.ToString(msg.Value[1]);
            textBoxReadStable_Mes.Text = Convert.ToString(msg.Value[2]);
            textBoxSymbol_Mes.Clear();
            foreach (var strTemp in msg.Value[3])
            {
                textBoxSymbol_Mes.Text += strTemp + " ";
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            disconnectProvider();
            
        }
    }
}