package uk.co.metricrat.imagebase64;

import android.graphics.*;
import android.graphics.drawable.*;
import android.util.*;
import android.widget.*;
import com.google.appinventor.components.annotations.SimpleEvent;
import com.google.appinventor.components.annotations.SimpleFunction;
import com.google.appinventor.components.runtime.*;
import java.io.*;
import java.net.*;

import static org.acra.ACRA.LOG_TAG;


public class ImageBase64 extends AndroidNonvisibleComponent {

    public ImageBase64(ComponentContainer container) {
      super(container.$form());

    }

    @SimpleFunction(description = "Get Image and returns base64 string")
    public void GetImageAsBase64(Image image ) throws Exception {

      final ImageView imageView = (ImageView) image.getView();
      Bitmap imageBitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap();

      String encodedString = bitMapToBase64(imageBitmap);
      AfterImageBase64(encodedString);
    }

    public String bitMapToBase64(Bitmap bitMap) {
      ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
      bitMap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
      byte[] byteArray = byteArrayOutputStream.toByteArray();
      return Base64.encodeToString(byteArray, Base64.NO_WRAP);
    }

    @SimpleEvent(description = "Called after the image is converted. The text argument `imageBase64Data` is the base64 string of the image")
    public void AfterImageBase64(String imageBase64Data) {
      EventDispatcher.dispatchEvent(this, "AfterImageBase64", imageBase64Data);
    }

    @SimpleFunction(description="Set Image component with image from base64 string")
    public void SetImageFromBase64(final Image image, String base64String) {
        final ImageView imageView = (ImageView) image.getView();
        byte[] decodedString = Base64.decode(base64String, Base64.NO_WRAP);
        Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
        imageView.setImageBitmap(decodedByte);
    }


    // Encodes the given text value so that it can be used in a URL.
    @SimpleFunction(description = "Encodes the given text value so that it can be used in a URL")
    public String UriEncode(String text) {
        try {
            return URLEncoder.encode(text, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            Log.e(LOG_TAG, "UTF-8 is unsupported?", e);
            return "";
        }
    }

}