using UnityEngine;
using UnityEngine.UI;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.Controls;
using Gyroscope = UnityEngine.InputSystem.Gyroscope;

namespace Unity.RenderStreaming.Samples
{
    using InputSystem = UnityEngine.InputSystem.InputSystem;

    class GyroSample : MonoBehaviour
    {
#pragma warning disable 0649
            [SerializeField] private SignalingManager renderStreaming;
            [SerializeField] private Button sendOfferButton;
            [SerializeField] private RawImage remoteVideoImage;
            [SerializeField] private VideoStreamReceiver receiveVideoViewer;
            [SerializeField] private SingleConnection connection;
            [SerializeField] private Text textVelocityX;
            [SerializeField] private Text textVelocityY;
            [SerializeField] private Text textVelocityZ;
            [SerializeField] private InputAction vector3Action;
#pragma warning restore 0649
        private RenderStreamingSettings settings;

        void Awake()
        {
            if(Gyroscope.current != null)
                InputSystem.EnableDevice(Gyroscope.current);
            else
                Debug.LogError("Gyroscope is not supported on this device.");
            sendOfferButton.onClick.AddListener(SendOffer);
            receiveVideoViewer.OnUpdateReceiveTexture += texture => remoteVideoImage.texture = texture;

            settings = SampleManager.Instance.Settings;
        }

        void OnDestroy()
        {
            // Reset InputControl of Gyroscope surely.
            InputSystem.ResetDevice(Gyroscope.current, true);
            InputSystem.DisableDevice(Gyroscope.current);
        }

        void Start()
        {
            if (renderStreaming.runOnAwake)
                return;
            if (settings != null)
                renderStreaming.useDefaultSettings = settings.UseDefaultSettings;
            if (settings?.SignalingSettings != null)
                renderStreaming.SetSignalingSettings(settings.SignalingSettings);
            renderStreaming.Run();
        }

        void OnEnable()
        {
            vector3Action.Enable();
            vector3Action.performed += UpdateVector3;
            vector3Action.started += UpdateVector3;
            vector3Action.canceled += UpdateVector3;
        }

        void OnDisable()
        {
            vector3Action.Disable();
            vector3Action.performed -= UpdateVector3;
            vector3Action.started -= UpdateVector3;
            vector3Action.canceled -= UpdateVector3;
        }

        private void UpdateVector3(InputAction.CallbackContext context)
        {
            if (context.control is Vector3Control control)
            {
                Vector3 value = control.ReadValue();
                textVelocityX.text = value.x.ToString("f2");
                textVelocityY.text = value.y.ToString("f2");
                textVelocityZ.text = value.z.ToString("f2");
            }
        }

        void SendOffer()
        {
            if(settings != null)
                receiveVideoViewer.SetCodec(settings.ReceiverVideoCodec);

            var connectionId = System.Guid.NewGuid().ToString("N");
            connection.CreateConnection(connectionId);
        }
    }
}