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

using UnityEngine.UI;

using UnityEngine.Networking;

public class ImageUploader : MonoBehaviour
{
    //public GameObject sendingPanel;
    public GameObject errorPanel;


    public GameObject masterConnector;
    // Start is called before the first frame update
    void Start()
    {
        
    }

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

    public void UploadImageToServer() 
    {
        //sendingPanel.SetActive(true);  //delete sending panel since it block the image in the middle
        StartCoroutine( TakeScreenshotAndSave() );
        

    }

    private IEnumerator TakeScreenshotAndSave()
    {
	    yield return new WaitForEndOfFrame();

	    Texture2D ss = new Texture2D( Screen.width, Screen.height, TextureFormat.RGB24, false );
	    ss.ReadPixels( new Rect( 0, 0, Screen.width, Screen.height ), 0, 0 );
	    ss.Apply();

	    // SEND THE PHOTO TO SERVER
        byte[] bytes = ss.EncodeToPNG();

	    Debug.Log( "Permission result: sucess");

        string gameNumber = masterConnector.GetComponent<MasterCreateGame>().GetGameNumber();

        StartCoroutine(SendImageToServer(gameNumber, bytes));

	    // To avoid memory leaks
	    Destroy( ss );
    }

    public IEnumerator SendImageToServer(string gameNumber, byte[] image)
    {
        string serverUrl = "https://smarthubs.media.tuwien.ac.at/api/add_image_to_game";

       // Create a Web Form
        WWWForm form = new WWWForm();
        form.AddField("game", gameNumber);
        form.AddBinaryData("img", image);

        using (UnityWebRequest www = UnityWebRequest.Post(serverUrl, form))
        {
            yield return www.SendWebRequest();

            if (www.result != UnityWebRequest.Result.Success)
            {
                Debug.Log(www.error);
                // PROMPT ERROR
                errorPanel.SetActive(true);
            }
            else
            {
                Debug.Log("Form upload complete!");
                //sendingPanel.SetActive(false);    //delete sending panel since it block the image in the middle
                
                
            }
        }
    }

}