using System.Collections;
using System.Collections.Generic;
using Unity.Collections;
using UnityEditor;
using UnityEngine;


namespace FreeD
{
    [RequireComponent(typeof(Camera))]
    [ExecuteInEditMode]
    public class FreeDReceiver : MonoBehaviour
    {
        public int cameraId;

        [Header("Listening on port")]
        public int listeningPort = 40_000;
        [Tooltip("Run the server in edit mode")]
        public new bool runInEditMode = true;
        [Tooltip("Show received messages in Unity console")]
        public bool showPacketInConsole = true;
        private string latestMessage;
        [Tooltip("Apply position modification to Unity")]
        public bool modifyPositionWithFreeD = false;
        public bool useRestrictionsPanasonicAW_UE = true;

        [Header("Debug")]
        [Tooltip("Apply the values received to the gameObject")]
        public bool apply = true;

        FreeDServer server;
        Packet packet;
        public Packet lastPacket;

        void OnEnable()
        {
            if (!Application.isPlaying && !runInEditMode) return;
            server = FreeDServer.Get(listeningPort);
            server.received += OnPacketReceived;
        }

        void OnDisable()
        {
            if (server == null) return;
            server.received -= OnPacketReceived;
            server.Stop();
        }

        private void OnPacketReceived(Packet packet)
        {
            if (packet.Id != cameraId) return;

            this.packet = packet;
            if (showPacketInConsole)
                latestMessage = $"Receiving Camera ID {packet.Id}: {packet.Id},{packet.Pan},{packet.Tilt},{packet.Roll},{packet.PosZ},{packet.PosX},{packet.PosY},{packet.Zoom},{packet.Focus}";
        }

        void Update() 
        {
            if (!Application.isPlaying && !runInEditMode) return;
            if (packet == null) return;
            lastPacket = packet;
            if (!apply) return;


            // Cameras don't need to respond to position
            if(modifyPositionWithFreeD)
            {
                transform.localPosition = new Vector3(packet.PosX / 1000f, packet.PosY / 1000f, -packet.PosZ / 1000f);
            }

            transform.localRotation = Quaternion.identity;
            transform.Rotate(Vector3.up, packet.Pan);
            transform.Rotate(Vector3.up, 90f);
            transform.Rotate(Vector3.right, -packet.Tilt);
            transform.Rotate(Vector3.forward, -packet.Roll);

            var camera = GetComponent<Camera>();
            if (camera != null)
            {
                if (packet.Zoom > 0)
                {
                    if(useRestrictionsPanasonicAW_UE)
                    {
                        float newFocalLength = (packet.Zoom / (4095f / 179f));
                    }
                    else
                    {
                        camera.focalLength = Mathf.Clamp(packet.Zoom / (4095f / 179f), 0.001f, 179f);
                    }

                }
                camera.focusDistance = -packet.Focus / 1000f;
            }
                      
           
            packet = null;
        }

        void OnDrawGizmos()
        {
#if UNITY_EDITOR
            if (!Application.isPlaying)
            {
                UnityEditor.EditorApplication.QueuePlayerLoopUpdate();
                UnityEditor.SceneView.RepaintAll();
            }
#endif
        }

        private void OnGUI()
        {
            Rect rectPosOnScreen = new Rect(0, 10 + (cameraId * 20f), Screen.width, 0.05f * Screen.height);
            if (showPacketInConsole)
            {
                GUIStyle textStyle = new GUIStyle(GUI.skin.label);
                textStyle.normal.textColor = Color.green;
                textStyle.fontSize = 10;
                GUI.Label(rectPosOnScreen, latestMessage, textStyle);
            }
            else
            {
                GUI.Label(rectPosOnScreen, "");
            }
        }

    }


#if UNITY_EDITOR
    [CustomEditor(typeof(FreeDReceiver))]
    public class FreeDReceiverEditor : Editor
    {
        public override void OnInspectorGUI()
        {

            FreeDReceiver myScript = (FreeDReceiver)target;

            if (myScript.enabled)
            {
                if (GUILayout.Button($"Stop Receiving from Camera ID {myScript.cameraId}"))
                {
                    myScript.enabled = false;
                    myScript.apply= false;
                }
            }
            else
            {
                if (GUILayout.Button($"Start Receiving from Camera ID {myScript.cameraId}"))
                {
                    myScript.enabled = true;
                    myScript.apply = true;
                }
            }

            DrawDefaultInspector();
        }
    }
#endif

}