using System.Collections;
using TMPro;
using UnityEngine;

/// <summary>
/// Authorize and check for available webcam(s)
/// </summary>
public class BootScreen : MonoBehaviour
{
    /// <summary>
    /// UI Reference to the text object to display an error message
    /// </summary>
    public TMP_Text errorText;

    /// <summary>
    /// Reference to the list that holds all user avatars
    /// </summary>
    public UserAvatarList sprites;

    /// <summary>
    /// Request authorization and check whether at least 1 webcam is available
    /// </summary>
    IEnumerator Start()
    {
        UserList.AVATARS = sprites.avatars;
        PersistentDataController.GetInstance().Load();

        yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
        if (Application.HasUserAuthorization(UserAuthorization.WebCam))
        {
            if (0 < WebCamTexture.devices.Length)
            {
                WebCamTexture webcamTexture = new WebCamTexture();
                webcamTexture.deviceName = WebCamTexture.devices[0].name;

                webcamTexture.Play();
                yield return new WaitForSeconds(0.1f); // Wait a little for the webcam to start

                if (webcamTexture.isPlaying)
                {
                    webcamTexture.Stop();
                    SystemController.GetInstance().SwapScene("Common/Scenes/MainMenuScreen");
                }
                else
                {
                    errorText.text = "Zorg ervoor dat je webcam niet in gebruik is door een andere applicatie!";
                }
            }
            else
            {
                errorText.text = "Zorg ervoor dat je webcam correct is aangesloten!";
            }
        }
        else
        {
            errorText.text = "Zorg ervoor dat deze applicatie toegang heeft tot je webcam!";
        }
    }
}