using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;

public class PanelWithVideoAndImage : MonoBehaviour
{
    public GameObject feedbackProgressObject;
    public GameObject previewMessage;
    public bool isPreview;

    public Sprite playSprite;
    public Sprite pauseSprite;

    /// <summary>
    /// Reference to instructional video player
    /// </summary>
    public VideoPlayer videoPlayer;
    public Image playButton;
    public RawImage webcamScreen;

    /// <summary>
    /// Reference to the image for displaying the current words sprite
    /// </summary>
    public Transform signImageContainer;

    public GameObject signImagePrefab;

    /// <summary>
    /// Reference to the feedback field
    /// </summary>
    public TMP_Text feedbackText;

    /// <summary>
    /// Reference to the progress bar
    /// </summary>
    public Slider feedbackProgressBar;

    /// <summary>
    /// Reference to the progress bar image, so we can add fancy colors
    /// </summary>
    public Image feedbackProgressImage;

    public List<Learnable> signs;
    public int currentSignIndex;

    public void Display()
    {
        Learnable currentSign = signs[currentSignIndex];
        videoPlayer.aspectRatio = VideoAspectRatio.FitInside;
        videoPlayer.clip = currentSign.clip;
        videoPlayer.Play();

        feedbackProgressObject.SetActive(!isPreview);
        previewMessage.SetActive(isPreview);

        List<Sprite> sprites = new List<Sprite>() { currentSign.image };
        if (currentSign.handGuide != null)
            sprites.Add(currentSign.handGuide);

        foreach (Sprite s in sprites)
        {
            GameObject sprite = GameObject.Instantiate(signImagePrefab, signImageContainer);
            sprite.GetComponent<Image>().sprite = s;
        }
    }

    /// <summary>
    /// This function is called when the pause-button is pressed on the video.
    /// It switches between playing and pausing the video.
    /// It then makes the button invisible when the video is playing, or visible when it's paused.
    /// </summary>
    public void TogglePlayPause()
    {
        if (!videoPlayer.isPlaying)
        {
            // Play video and switch sprite of button
            playButton.sprite = pauseSprite;
            videoPlayer.Play();
        }
           
        else
        {
            // Pause video and and switch sprite of button
            playButton.sprite = playSprite;
            videoPlayer.Pause();
        }
            
    }
}