using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using JulMar.Atapi;

namespace TAPI20
{
    public partial class Form1 : Form
    {

        private string lineName = string.Empty;
        private string name = "";
        TapiManager myTAPI;

        public Form1()
        {
            InitializeComponent();
            initTAPI();

        }




        void initTAPI()
        {

            myTAPI = new TapiManager("GetCaller");

            if (!myTAPI.Initialize())
            {
                MessageBox.Show("FAILED!");
            }else
            {
                name = myTAPI.Lines[0].Name;
                lineName = (myTAPI != null && myTAPI.Lines.Length > 0 ? name : string.Empty);

                foreach(TapiLine line in myTAPI.Lines)
                {
                    line.NewCall += this.OnNewCall;
                    line.Ringing += this.OnRinging;
                    line.CallStateChanged += this.OnCallState;
                    line.CallInfoChanged += this.OnCallInfo;
                }

                MessageBox.Show(lineName);

            }
        }

        private void OnNewCall(object sender, NewCallEventArgs e)
        {
            if(InvokeRequired == true)
            {
                this.BeginInvoke(new EventHandler<NewCallEventArgs>(this.OnNewCall), new object[] { sender, e });
                return;
            }

            label1.Text = "Dialing...";
        }

        private void OnRinging(object sender, RingEventArgs e)
        {
            if (InvokeRequired == true)
            {
                this.BeginInvoke(new EventHandler<RingEventArgs>(this.OnRinging), new object[] { sender, e });
                return;
            }

            label1.Text = "Ringing...";


        }

        private void OnCallState(object sender, CallStateEventArgs e)
        {
            if (InvokeRequired == true)
            {
                this.BeginInvoke(new EventHandler<CallStateEventArgs>(this.OnCallState), new object[] { sender, e });
                return;
            }

            label1.Text = "Outgoing Call...";


        }

        private void OnCallInfo(object sender, CallInfoChangeEventArgs e)
        {
            if (InvokeRequired == true)
            {
                this.BeginInvoke(new EventHandler<CallInfoChangeEventArgs>(this.OnCallInfo), new object[] { sender, e });
                return;
            }

            label1.Text = "Incoming Call...";


        }

        private void MakePhoneCall(string phoneNumber)
        {
            TapiLine line = myTAPI.GetLineByName(this.lineName, true);

            if (line != null)
            {
                if (!line.IsOpen)
                    line.Open(MediaModes.All);

                line.NewCall += new EventHandler<NewCallEventArgs>(line_NewCall);
                line.CallInfoChanged += new EventHandler<CallInfoChangeEventArgs>(line_CallInfoChanged);
                line.CallStateChanged += new EventHandler<CallStateEventArgs>(line_CallStateChanged);

                if (phoneNumber.Length > 0)
                {
                    MakeCallParams makeCallParams = new MakeCallParams();
                    makeCallParams.DialPause = 2000;
                    try
                    {
                        TapiCall call = line.MakeCall(phoneNumber, null, makeCallParams);
                        MessageBox.Show("Created call " + phoneNumber + " -> " + call, "Sending…");
                    }
                    catch (Exception exc)
                    {
                        if (exc.Message.IndexOf("[0x80000005]") > -1 && myTAPI != null)
                        {
                            myTAPI.Shutdown();
                            myTAPI = new TapiManager("GetCaller");
                            if (myTAPI.Initialize())
                                this.MakePhoneCall(phoneNumber);
                        }
                    }
                }
            }
        }


        private void line_NewCall(object sender, NewCallEventArgs e)
        {
            MessageBox.Show("New call: " + e.Call, e.Privilege.ToString());
        }

        private void line_CallStateChanged(object sender, CallStateEventArgs e)
        {
            MessageBox.Show("CallState: " + e.Call.ToString(), e.CallState.ToString());
        }

        private void line_CallInfoChanged(object sender, CallInfoChangeEventArgs e)
        {
            MessageBox.Show("CallInfo: " + e.Call.ToString(), e.Change.ToString());
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MakePhoneCall("123456789");
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            myTAPI.Shutdown();
            Application.ExitThread();
        }

    }
}