/* 
 * Spout4Unity
* Copyright © 2014-2015 Benjamin Kuperberg
* Copyright © 2015 Stefan Schlupek
* All rights reserved
*/
using UnityEngine;
using System.Collections;
using System;

namespace Spout
{
    [Serializable]
    [ExecuteInEditMode]
    [Obsolete("This component is deprecated. Use ImageEffectSpoutSender component instead.", false)]
    public class SpoutSender : MonoBehaviour
    {

        //according to dxgiformat.h :
        //tested with DXGI_FORMAT_R8G8B8A8_UNORM (ATI Card)
        
        public string sharingName = "UnitySender";
        public Texture texture;
        public Spout.TextureFormat textureFormat = Spout.TextureFormat.DXGI_FORMAT_R8G8B8A8_UNORM;
        public bool debugConsole = false;

        private bool senderIsCreated;
#if UNITY_EDITOR
        private Camera _cam;
#endif
        //make this public if you want
        //It's better you set this always to true!
        //There are problems with creating a sender at OnEnable at Editor/App Start time so we have a little delay hack that calls the CreateSender at Update()
        private bool StartupDelay = true;
        // if there are problems you can increase this value 
        private int _startupFramesDelay = 3;

        private int _startUpFrameCount;

        private int _createAttempts = 5;
        private int _attempts = 0;

#pragma warning disable 414
        //In  EditMode we have to force the camera to render.But as this is called 100 times per second beware of your performance, so we only render at a specific interval
        private int _editorUpdateFrameInterval = 10;
#pragma warning restore 414

        private int _frameCounter;


        void Awake()
        {
            //Debug.Log("SpoutSender.Awake");
            //if(debugConsole) Spout2.instance.initDebugConsole();
#if UNITY_EDITOR
            _cam = GetComponent<Camera>() as Camera;
#endif
        }

        void Start()
        {

        }

        void OnEnable()
        {

            //Debug.Log("SpoutSender.OnEnable");


#if UNITY_EDITOR

            if (!Application.isPlaying)
            {
                UnityEditor.EditorApplication.update -= _Update;
                UnityEditor.EditorApplication.update += _Update;
            }
#endif
            if (debugConsole) Spout.instance.initDebugConsole();
            _startUpFrameCount = 0;
            _attempts = 0;

            //Problem with creatingSender and disabled hosting Gameobject.(You always have to call OnEnable twice to get a Sender created)
            //It's better to do the real createSender call at OnUpdate.
            if (!StartupDelay) _CreateSender();

        }

        void OnDisable()
        {
            Debug.Log("SpoutSender.OnDisable");

            //we can't call  Spout2.instance because on Disable is also called when scene is destroyed.  
            //so a nother instance of Spout could be generated in the moment when the Spout2 instance is destroyed!


#if UNITY_EDITOR
            UnityEditor.EditorApplication.update -= _Update;
#endif

            _CloseSender();
        }

        void Update()
        {
            _Update();
        }

        void _Update()
        {
            //Debug.Log("SpoutSender.Update");
            if (texture == null) return;

            //in  EditMode we have to force the camera to render.But as this is called 100 times per second beware of your performance, so we only render at a special interval
#if UNITY_EDITOR
            if (!Application.isPlaying)
            {
                _frameCounter++;
                _frameCounter %= _editorUpdateFrameInterval;
                if (Spout.isEnabledInEditor)
                {
                    if (_cam != null)
                    {
                        if (_frameCounter == 0) _cam.Render();
                    }
                }
            }
#endif

            if (senderIsCreated)
            {
                Spout.instance.UpdateSender(sharingName, texture);
                //Debug.Log("Update sender :"+updateSenderResult);
            }
            else
            {

                //this is the delay  

                if (StartupDelay)
                {
                    _startUpFrameCount++;
                    if (_startUpFrameCount < _startupFramesDelay) return;
                    if (_attempts > _createAttempts) return;
                    _CreateSender();
                }

            }
        }

        void OnDestroy()
        {

        }


        private void _CreateSender()
        {
            //Debug.Log("SpoutSender._CreateSender");

            if (texture == null) return;
            if (!Spout.isInit) return;
            if (!Spout.instance.enabled) return;
#if UNITY_EDITOR
            if (!Application.isPlaying && !Spout.isEnabledInEditor) return;
#endif


            //Debug.Log("SpoutSender._CreateSender");

            if (!senderIsCreated)
            {
                Debug.Log("Sender is not created, creating one");
                senderIsCreated = Spout.instance.CreateSender(sharingName, texture, (int)textureFormat);
            }

            _attempts++;
            if (_attempts > _createAttempts) Debug.LogWarning(String.Format("There are problems with creating the sender {0}. Please check your settings or restart Unity.", sharingName));
#if UNITY_EDITOR
            if (_cam != null)
            {
                if (_cam.targetTexture == null || _cam.targetTexture != texture)
                {
                    Debug.LogWarning("Your Camera has no Target Texture or the texture that the Spout Sender uses is different!");
                    if (texture != null) _cam.targetTexture = (RenderTexture)texture;
                }
            }
#endif
            Spout.instance.OnSenderStopped -= OnSenderStoppedDelegate;
            Spout.instance.OnSenderStopped += OnSenderStoppedDelegate;

            Spout.instance.OnAllSendersStopped -= OnAllSendersStoppedDelegate;
            Spout.instance.OnAllSendersStopped += OnAllSendersStoppedDelegate;

            Spout.instance.OnEnabled -= _OnSpoutEnabled;
            Spout.instance.OnEnabled += _OnSpoutEnabled;
        }

        private void _OnSpoutEnabled()
        {
            //Debug.Log("SpoutSender._OnSpoutEnabled");
            if (enabled)
            {
                //force a reconnection
                enabled = !enabled;
                enabled = !enabled;
            }
        }

        private void _CloseSender()
        {
            Debug.Log("SpoutSender._CloseSender:" + sharingName);
            if (senderIsCreated) Spout.CloseSender(sharingName);
            _CloseSenderCleanUpData();
        }

        private void OnSenderStoppedDelegate(object sender, TextureShareEventArgs e)
        {
            //Debug.Log("SpoutSender.OnSenderStoppedDelegate:"+e.sharingName);
            if (e.sharingName == sharingName)
            {
                _CloseSenderCleanUpData();
            }
        }

        private void OnAllSendersStoppedDelegate()
        {
            _CloseSenderCleanUpData();
        }

        private void _CloseSenderCleanUpData()
        {
            senderIsCreated = false;
        }
    }
}