using TMPro;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class SpellingBeeWebcam : MonoBehaviour
{   
    /// <summary>
    /// Index of the current camera
    /// </summary>
    int camdex = 0;

    /// <summary>
    /// Texture to paste on the display
    /// </summary>
    WebCamTexture tex;

    /// <summary>
    /// Display for the video feed
    /// </summary>
    public RawImage display;

    /// <summary>
    /// For later use
    /// </summary>
    public TextMeshProUGUI dynamic;

    /// <summary>
    /// Initialize the camera view
    /// </summary>
    void Awake()
    {
        WebCamDevice device = WebCamTexture.devices[camdex];
        tex = new WebCamTexture(device.name);
        display.texture = tex;

        tex.Play();
    }

    /// <summary>
    /// Switch to a different webcam
    /// </summary>
    public void SwapCam()
    {
        if (WebCamTexture.devices.Length > 0)
        {
            // Stop the old camera
            display.texture = null;
            tex.Stop();
            tex = null;

            // Find the new camera
            camdex += 1;
            camdex %= WebCamTexture.devices.Length;

            // Start the new camera
            WebCamDevice device = WebCamTexture.devices[camdex];
            tex = new WebCamTexture(device.name);
            display.texture = tex;

            tex.Play();
        }
    }

    /// <summary>
    /// Scene changing is implemented here to avoid problems with webcam
    /// </summary>
    public void LoadScene(string sceneName)
    {
        display.texture = null;
        tex.Stop();
        tex = null;

        SceneManager.LoadScene(sceneName);
    }
}