using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Diagnostics;

using System.Windows.Forms;

using CecSharp;

namespace SharpDisplayManager

{

    class ConsumerElectronicControl

    {

        ///

        private PowerManager.SettingNotifier iPowerSettingNotifier;

        ///

        private Cec.Client iCecClient;

        ///This flag will only work properly if both on and off events are monitored.

        ///TODO: have a more solid implementation

        public bool MonitorPowerOn;

        /// <summary>

        /// 

        /// </summary>

        /// <param name="aWndHandle"></param>

        /// <param name="aDeviceName"></param>

        /// <param name="aHdmiPort"></param>

        public void Start(IntPtr aWndHandle, string aDeviceName, byte aHdmiPort, bool aMonitorOn, bool aMonitorOff)

        {

            //Assuming monitor is on when we start up

            MonitorPowerOn = true;

            //Create our power setting notifier and register the event we are interested in

            iPowerSettingNotifier = new PowerManager.SettingNotifier(aWndHandle);

            //

            if (aMonitorOn)

            {

                iPowerSettingNotifier.OnMonitorPowerOn += OnMonitorPowerOn;

            }

            //

            if (aMonitorOff)

            {

                iPowerSettingNotifier.OnMonitorPowerOff += OnMonitorPowerOff;

            }

            //CEC

            iCecClient = new Cec.Client(aDeviceName,aHdmiPort);

            if (!iCecClient.Connect(1000))

            {

                Debug.WriteLine("WARNING: No CEC connection!");

            }

        }

        //

        public void Stop()

        {

            //

            if (iPowerSettingNotifier != null)

            {

                iPowerSettingNotifier.OnMonitorPowerOn -= OnMonitorPowerOn;

                iPowerSettingNotifier.OnMonitorPowerOff -= OnMonitorPowerOff;

                iPowerSettingNotifier = null;

            }

            //

            if (iCecClient != null)

            {

                iCecClient.Close();

                iCecClient.Dispose();

                iCecClient = null;

            }

        }

        private void OnMonitorPowerOn()

        {

            Debug.WriteLine("ON");

            iCecClient.Lib.PowerOnDevices(CecLogicalAddress.Tv);

            iCecClient.Lib.SetActiveSource(CecDeviceType.Tv);

            MonitorPowerOn = true;

        }

        private void OnMonitorPowerOff()

        {

            Debug.WriteLine("OFF");

            iCecClient.Lib.StandbyDevices(CecLogicalAddress.Tv);

            MonitorPowerOn = false;

        }

        /// <summary>

        /// We need to handle WM_POWERBROADCAST.

        /// </summary>

        /// <param name="message"></param>

        public void OnWndProc(ref Message message)

        {

            //Hook in our power manager

            if (iPowerSettingNotifier != null)

            {

                iPowerSettingNotifier.WndProc(ref message);

            }

        }

    }

}