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package org.mozc.android.inputmethod.japanese.vectorgraphic;

import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.os.Environment;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Saves given {@code Bitmap} to the external stroge.
 */
public class BitmapSaver {

  private BitmapSaver() {
  }

  /**
   * @param filename e.g., "test-01.png"
   * @param bitmap a Bitmap to be saved
   * @return fullpath to resulting .png file.
   */
  public static String saveAsPng(String filename, Bitmap bitmap) {
    FileOutputStream output = null;
    try {
      File file = new File(Environment.getExternalStorageDirectory(), filename);
      output = new FileOutputStream(file);
      bitmap.compress(CompressFormat.PNG, 100, output);
      return file.getAbsolutePath();
    } catch (FileNotFoundException e) {
      throw new RuntimeException(e);
    } finally {
      try {
        output.close();
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  }
}