using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Crestron.SimplSharp;
using Crestron.SimplSharpPro;
using Crestron.SimplSharpPro.DeviceSupport;
using Crestron.SimplSharpPro.DM;
using Crestron.SimplSharpPro.DM.Endpoints;
using Crestron.SimplSharpPro.DM.Endpoints.Transmitters;

using PepperDash.Core;
using PepperDash.Essentials.Core;
using PepperDash.Essentials.Core.Bridges;
using PepperDash.Essentials.DM.Config;

namespace PepperDash.Essentials.DM
{
    // using eVst = Crestron.SimplSharpPro.DeviceSupport.eX02VideoSourceType;

    /// <summary>
    /// Controller class for all DM-TX-201C/S/F transmitters
    /// </summary>
    public class DmTx200Controller : DmTxControllerBase, ITxRouting, IHasFeedback, IHasFreeRun, IVgaBrightnessContrastControls
    {
        public DmTx200C2G Tx { get; private set; }

        public RoutingInputPortWithVideoStatuses HdmiInput { get; private set; }
        public RoutingInputPortWithVideoStatuses VgaInput { get; private set; }
        public RoutingOutputPort DmOutput { get; private set; }

        public override StringFeedback ActiveVideoInputFeedback { get; protected set; }
        public IntFeedback VideoSourceNumericFeedback { get; protected set; }
        public IntFeedback AudioSourceNumericFeedback { get; protected set; }
        public IntFeedback HdmiInHdcpCapabilityFeedback { get; protected set; }

        public BoolFeedback FreeRunEnabledFeedback { get; protected set; }

        public IntFeedback VgaBrightnessFeedback { get; protected set; }
        public IntFeedback VgaContrastFeedback { get; protected set; }

        /// <summary>
        /// Helps get the "real" inputs, including when in Auto
        /// </summary>
        public DmTx200Base.eSourceSelection ActualActiveVideoInput
        {
            get
            {
                if (Tx.VideoSourceFeedback == DmTx200Base.eSourceSelection.Digital ||
                        Tx.VideoSourceFeedback == DmTx200Base.eSourceSelection.Analog ||
                        Tx.VideoSourceFeedback == DmTx200Base.eSourceSelection.Disable)
                    return Tx.VideoSourceFeedback;
                else // auto
                {
                    if (Tx.HdmiInput.SyncDetectedFeedback.BoolValue)
                        return DmTx200Base.eSourceSelection.Digital;
                    else if (Tx.VgaInput.SyncDetectedFeedback.BoolValue)
                        return DmTx200Base.eSourceSelection.Analog;
                    else
                        return DmTx200Base.eSourceSelection.Disable;
                }
            }
        }

        public RoutingPortCollection<RoutingInputPort> InputPorts
        {
            get
            {
                return new RoutingPortCollection<RoutingInputPort> 
				{ 
					HdmiInput, 
					VgaInput, 
					AnyVideoInput 
				};
            }
        }

        public RoutingPortCollection<RoutingOutputPort> OutputPorts
        {
            get
            {
                return new RoutingPortCollection<RoutingOutputPort> { DmOutput };
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="key"></param>
        /// <param name="name"></param>
        /// <param name="tx"></param>
        public DmTx200Controller(string key, string name, DmTx200C2G tx)
            : base(key, name, tx)
        {
            Tx = tx;

            HdmiInput = new RoutingInputPortWithVideoStatuses(DmPortName.HdmiIn,
                eRoutingSignalType.Audio | eRoutingSignalType.Video, eRoutingPortConnectionType.Hdmi, DmTx200Base.eSourceSelection.Digital, this,
                VideoStatusHelper.GetHdmiInputStatusFuncs(tx.HdmiInput));
            VgaInput = new RoutingInputPortWithVideoStatuses(DmPortName.VgaIn,
                eRoutingSignalType.Video, eRoutingPortConnectionType.Vga, DmTx200Base.eSourceSelection.Analog, this,
                VideoStatusHelper.GetVgaInputStatusFuncs(tx.VgaInput));

            ActiveVideoInputFeedback = new StringFeedback("ActiveVideoInput",
                () => ActualActiveVideoInput.ToString());

            Tx.HdmiInput.InputStreamChange += new EndpointInputStreamChangeEventHandler(InputStreamChangeEvent);
            Tx.BaseEvent += Tx_BaseEvent;
            Tx.OnlineStatusChange += new OnlineStatusChangeEventHandler(Tx_OnlineStatusChange);

            VideoSourceNumericFeedback = new IntFeedback(() =>
            {
                return (int)Tx.VideoSourceFeedback;
            });
            AudioSourceNumericFeedback = new IntFeedback(() =>
            {
                return (int)Tx.AudioSourceFeedback;
            });

            HdmiInHdcpCapabilityFeedback = new IntFeedback("HdmiInHdcpCapability", () =>
            {
                if (tx.HdmiInput.HdcpSupportOnFeedback.BoolValue)
                    return 1;
                else
                    return 0;
            });

            HdcpSupportCapability = eHdcpCapabilityType.HdcpAutoSupport;

            FreeRunEnabledFeedback = new BoolFeedback(() => tx.VgaInput.FreeRunFeedback == eDmFreeRunSetting.Enabled);

            VgaBrightnessFeedback = new IntFeedback(() => tx.VgaInput.VideoControls.BrightnessFeedback.UShortValue);
            VgaContrastFeedback = new IntFeedback(() => tx.VgaInput.VideoControls.ContrastFeedback.UShortValue);

            tx.VgaInput.VideoControls.ControlChange += new Crestron.SimplSharpPro.DeviceSupport.GenericEventHandler(VideoControls_ControlChange);


            var combinedFuncs = new VideoStatusFuncsWrapper
            {
                HdcpActiveFeedbackFunc = () =>
                    (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Digital
                    && tx.HdmiInput.VideoAttributes.HdcpActiveFeedback.BoolValue),

                HdcpStateFeedbackFunc = () =>
                {
                    if (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Digital)
                        return tx.HdmiInput.VideoAttributes.HdcpStateFeedback.ToString();
                    return "";
                },

                VideoResolutionFeedbackFunc = () =>
                {
                    if (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Digital)
                        return tx.HdmiInput.VideoAttributes.GetVideoResolutionString();
                    if (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Analog)
                        return tx.VgaInput.VideoAttributes.GetVideoResolutionString();
                    return "";
                },
                VideoSyncFeedbackFunc = () =>
                (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Digital
                && tx.HdmiInput.SyncDetectedFeedback.BoolValue)
                || (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Analog
                && tx.VgaInput.SyncDetectedFeedback.BoolValue)
                || (ActualActiveVideoInput == DmTx200Base.eSourceSelection.Auto
                && (tx.VgaInput.SyncDetectedFeedback.BoolValue || tx.HdmiInput.SyncDetectedFeedback.BoolValue))

            };

            AnyVideoInput = new RoutingInputPortWithVideoStatuses(DmPortName.AnyVideoIn,
    eRoutingSignalType.Audio | eRoutingSignalType.Video, eRoutingPortConnectionType.None, 0, this, combinedFuncs);

            DmOutput = new RoutingOutputPort(DmPortName.DmOut, eRoutingSignalType.Audio | eRoutingSignalType.Video, eRoutingPortConnectionType.DmCat, null, this);

            AddToFeedbackList(ActiveVideoInputFeedback, VideoSourceNumericFeedback, AudioSourceNumericFeedback,
                AnyVideoInput.VideoStatus.HasVideoStatusFeedback, AnyVideoInput.VideoStatus.HdcpActiveFeedback,
                AnyVideoInput.VideoStatus.HdcpStateFeedback, AnyVideoInput.VideoStatus.VideoResolutionFeedback,
                AnyVideoInput.VideoStatus.VideoSyncFeedback, HdmiInHdcpCapabilityFeedback);

            // Set Ports for CEC
            HdmiInput.Port = Tx.HdmiInput;
            VgaInput.Port = Tx.VgaInput;
            DmOutput.Port = Tx.DmOutput;
        }

        void VideoControls_ControlChange(object sender, Crestron.SimplSharpPro.DeviceSupport.GenericEventArgs args)
        {
            var id = args.EventId;
            Debug.Console(2, this, "EventId {0}", args.EventId);

            if (id == VideoControlsEventIds.BrightnessFeedbackEventId)
            {
                VgaBrightnessFeedback.FireUpdate();
            }
            else if (id == VideoControlsEventIds.ContrastFeedbackEventId)
            {
                VgaContrastFeedback.FireUpdate();
            }
        }

        void Tx_OnlineStatusChange(GenericBase currentDevice, OnlineOfflineEventArgs args)
        {
            ActiveVideoInputFeedback.FireUpdate();
            VideoSourceNumericFeedback.FireUpdate();
            AudioSourceNumericFeedback.FireUpdate();

        }

        public override bool CustomActivate()
        {

            Tx.HdmiInput.InputStreamChange += (o, a) => FowardInputStreamChange(HdmiInput, a.EventId);
            Tx.HdmiInput.VideoAttributes.AttributeChange += (o, a) => FireVideoAttributeChange(HdmiInput, a.EventId);

            Tx.VgaInput.InputStreamChange += (o, a) => FowardInputStreamChange(VgaInput, a.EventId);
            Tx.VgaInput.VideoAttributes.AttributeChange += (o, a) => FireVideoAttributeChange(VgaInput, a.EventId);

            // Base does register and sets up comm monitoring.
            return base.CustomActivate();
        }

        public override void LinkToApi(BasicTriList trilist, uint joinStart, string joinMapKey, EiscApi bridge)
        {
            LinkDmTxToApi(this, trilist, joinStart, joinMapKey, bridge);
        }

        /// <summary>
        /// Enables or disables free run
        /// </summary>
        /// <param name="enable"></param>
        public void SetFreeRunEnabled(bool enable)
        {
            if (enable)
            {
                Tx.VgaInput.FreeRun = eDmFreeRunSetting.Enabled;
            }
            else
            {
                Tx.VgaInput.FreeRun = eDmFreeRunSetting.Disabled;
            }
        }

        /// <summary>
        /// Sets the VGA brightness level
        /// </summary>
        /// <param name="level"></param>
        public void SetVgaBrightness(ushort level)
        {
            Tx.VgaInput.VideoControls.Brightness.UShortValue = level;
        }

        /// <summary>
        /// Sets the VGA contrast level
        /// </summary>
        /// <param name="level"></param>
        public void SetVgaContrast(ushort level)
        {
            Tx.VgaInput.VideoControls.Contrast.UShortValue = level;
        }

        public void ExecuteNumericSwitch(ushort input, ushort output, eRoutingSignalType type)
        {
            Debug.Console(2, this, "Executing Numeric Switch to input {0}.", input);

            switch (input)
            {
                case 0:
                    {
                        ExecuteSwitch(DmTx200Base.eSourceSelection.Auto, null, type);
                        break;
                    }
                case 1:
                    {
                        ExecuteSwitch(HdmiInput.Selector, null, type);
                        break;
                    }
                case 2:
                    {
                        ExecuteSwitch(VgaInput.Selector, null, type);
                        break;
                    }
                case 3:
                    {
                        ExecuteSwitch(DmTx200Base.eSourceSelection.Disable, null, type);
                        break;
                    }
            }
        }

        public void ExecuteSwitch(object inputSelector, object outputSelector, eRoutingSignalType signalType)
        {
            if ((signalType | eRoutingSignalType.Video) == eRoutingSignalType.Video)
                Tx.VideoSource = (DmTx200Base.eSourceSelection)inputSelector;
            if ((signalType | eRoutingSignalType.Audio) == eRoutingSignalType.Audio)
                Tx.AudioSource = (DmTx200Base.eSourceSelection)inputSelector;
        }

        void Tx_BaseEvent(GenericBase device, BaseEventArgs args)
        {
            var id = args.EventId;
            Debug.Console(2, this, "EventId {0}", args.EventId);

            if (id == EndpointTransmitterBase.VideoSourceFeedbackEventId)
            {
                Debug.Console(2, this, "  Video Source: {0}", Tx.VideoSourceFeedback);
                VideoSourceNumericFeedback.FireUpdate();
                ActiveVideoInputFeedback.FireUpdate();
            }

            // ------------------------------ incomplete -----------------------------------------
            else if (id == EndpointTransmitterBase.AudioSourceFeedbackEventId)
            {
                Debug.Console(2, this, "  Audio Source: {0}", Tx.AudioSourceFeedback);
                AudioSourceNumericFeedback.FireUpdate();
            }
        }

        void InputStreamChangeEvent(EndpointInputStream inputStream, EndpointInputStreamEventArgs args)
        {
            Debug.Console(2, "{0} event {1} stream {2}", this.Tx.ToString(), inputStream.ToString(), args.EventId.ToString());

            if (args.EventId == EndpointInputStreamEventIds.HdcpSupportOffFeedbackEventId)
            {
                HdmiInHdcpCapabilityFeedback.FireUpdate();
            }
            else if (args.EventId == EndpointInputStreamEventIds.HdcpSupportOnFeedbackEventId)
            {
                HdmiInHdcpCapabilityFeedback.FireUpdate();
            }
        }

        /// <summary>
        /// Relays the input stream change to the appropriate RoutingInputPort.
        /// </summary>
        void FowardInputStreamChange(RoutingInputPortWithVideoStatuses inputPort, int eventId)
        {
            if (eventId == EndpointInputStreamEventIds.SyncDetectedFeedbackEventId)
            {
                inputPort.VideoStatus.VideoSyncFeedback.FireUpdate();
                AnyVideoInput.VideoStatus.VideoSyncFeedback.FireUpdate();
            }
        }

        /// <summary>
        /// Relays the VideoAttributes change to a RoutingInputPort
        /// </summary>
        void FireVideoAttributeChange(RoutingInputPortWithVideoStatuses inputPort, int eventId)
        {
            //// LOCATION: Crestron.SimplSharpPro.DM.VideoAttributeEventIds
            //Debug.Console(2, this, "VideoAttributes_AttributeChange event id={0} from {1}",
            //    args.EventId, (sender as VideoAttributesEnhanced).Owner.GetType());
            switch (eventId)
            {
                case VideoAttributeEventIds.HdcpActiveFeedbackEventId:
                    inputPort.VideoStatus.HdcpActiveFeedback.FireUpdate();
                    AnyVideoInput.VideoStatus.HdcpActiveFeedback.FireUpdate();
                    break;
                case VideoAttributeEventIds.HdcpStateFeedbackEventId:
                    inputPort.VideoStatus.HdcpStateFeedback.FireUpdate();
                    AnyVideoInput.VideoStatus.HdcpStateFeedback.FireUpdate();
                    break;
                case VideoAttributeEventIds.HorizontalResolutionFeedbackEventId:
                case VideoAttributeEventIds.VerticalResolutionFeedbackEventId:
                    inputPort.VideoStatus.VideoResolutionFeedback.FireUpdate();
                    AnyVideoInput.VideoStatus.VideoResolutionFeedback.FireUpdate();
                    break;
                case VideoAttributeEventIds.FramesPerSecondFeedbackEventId:
                    inputPort.VideoStatus.VideoResolutionFeedback.FireUpdate();
                    AnyVideoInput.VideoStatus.VideoResolutionFeedback.FireUpdate();
                    break;
            }
        }

    }
}