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

public class SaveImage : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    public RenderTexture renderTexture;
    public string fileName = "output.png";

    public void save()
    {
        string timestamp = System.DateTime.Now.ToString("yyyyMMdd_HHmmss");
        string fileNameWithTimestamp = System.IO.Path.GetFileNameWithoutExtension(fileName) + "_" + timestamp + System.IO.Path.GetExtension(fileName);

        SaveRenderTextureToPNG(renderTexture, fileNameWithTimestamp);
        Debug.Log("Image saved to " + fileNameWithTimestamp);
        // Optionally, you can also log the full path
        string fullPath = System.IO.Path.Combine(Application.persistentDataPath, fileNameWithTimestamp);
        Debug.Log("Full path: " + fullPath);
    }

    void SaveRenderTextureToPNG(RenderTexture rt, string filePath)
    {
        RenderTexture currentRT = RenderTexture.active;
        RenderTexture.active = rt;

        Texture2D tex = new Texture2D(rt.width, rt.height, TextureFormat.RGBA32, false);
        tex.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
        tex.Apply();

        byte[] bytes = tex.EncodeToPNG();
        System.IO.File.WriteAllBytes(filePath, bytes);

        RenderTexture.active = currentRT;
        Destroy(tex);
    }
}