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

public class Screenshot : MonoBehaviour
{
    [SerializeField]
    RawImage _previewImg;

    [SerializeField]
    Camera _capturecam;


    // Update is called once per frame
    void Update()
    {
     /*   if (Input.GetKeyDown(KeyCode.P))
        {
            CreatePreview();
        }*/
        
    }

    public void OnClickTakeScreenshot()
    {
        StartCoroutine(TakeScreenshot());
    }

    public void OnClickPreview()
    {
        CreatePreview();
    }

    public void DestroyPreviewTexture()
    {
        if (_previewImg.texture == true)
        {
            Destroy(_previewImg.texture);
        }
    }

    IEnumerator TakeScreenshot()
    {
        yield return new WaitForEndOfFrame();
        string timpStamp = DateTime.Now.ToString("ddMMyyyyHHmmssffff");
        ScreenCapture.CaptureScreenshot("snapshot_" + timpStamp + ".png");
    }

    void CreatePreview()
    {

        _capturecam.enabled = true;
        RenderTexture screenTexture = new RenderTexture(Screen.width, Screen.height, 16);
        _capturecam.targetTexture = screenTexture;
        RenderTexture.active = screenTexture;
        _capturecam.Render();

        Texture2D renderedTexture = new Texture2D(Screen.width, Screen.height);
        renderedTexture.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
        renderedTexture.Apply();
        
        RenderTexture.active = null;
        _capturecam.enabled = false;

        _previewImg.texture = renderedTexture;

        // Save texture in png file
        byte[] byteArray = renderedTexture.EncodeToPNG();
        string timpStamp = DateTime.Now.ToString("ddMMyyyyHHmmssffff");
        System.IO.File.WriteAllBytes(Application.persistentDataPath + $"/snapshot_{timpStamp}.png", byteArray);
    }
}