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

public class StartPause : MonoBehaviour
{
    public VideoPlayer player;
    public Button button;
    public Sprite pauseSprite;
    public Image image;

    private int word_i = 0;
    // In my example, i have 4 videos/images
    private int max_words = 4;
    
    // Start is called before the first frame update
    public void Start()
    {
        next_video();
        //next_image();

        button.image.sprite = pauseSprite;
        Color col = button.image.color;
        col.a = 255;
        button.image.color = col;
    }

    // These two functions generate video and image from files 
    private void next_video(){
        // TODO: fix with dynamic loading
        player.url = $"Assets/Courses/Videos/{word_i}.mp4";
    }

    // This doesn't work
    private void next_image(){
        // TODO: fix with dynamic loading
        Sprite tex = Resources.Load($"Assets/Courses/Images/{word_i}.png") as Sprite;
        image.sprite = tex;
    }

    // Activate by pressing the center of the screen
    public void Pause()
    {
        if (!player.isPlaying)
        {
            player.Play();
            Color col = button.image.color;
            col.a = 0;
            button.image.color = col;
        }
        else
        {
            player.Pause();
            Color col = button.image.color;
            col.a = 255;
            button.image.color = col;
        }
    } 

    // Press next-sign button for next word
    public void NextSign(){
        // Fetch next video and image from log
        // Idea : do this by numbering video's and images and using increment to find them.
        word_i++;
        word_i %= max_words;
        next_video();
        //next_image();
    }
}