package de.neriel.imagetest;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.util.Log;



public class ImageOperationHelper {
    /** Get TAG for debugging messages */
    public static final boolean DEBUG = StartupActivity.DEBUG;

    /** Tag for LogCat */
    public static final String TAG = ImageOperationHelper.class.getSimpleName();

    private CharSequence fileName;
    boolean mExternalStorageAvailable = false;
    boolean mExternalStorageWriteable = false;
    ImageOperationHelper(CharSequence argfileName){
        this.fileName=argfileName;
    }


    //Gets Bitmap Test.png from storage if available
    private Bitmap getImage(){
        checkSDCardStatus();
        if (this.mExternalStorageAvailable) {

            if (DEBUG)
                Log.d(TAG, "Filename: " + this.fileName);
            Bitmap mBitmap = BitmapFactory.decodeFile((String)this.fileName);

            return mBitmap;
        }
        return null;
    }


    //@TODO
    public void drawLineOnBitMapAndSaveItOnSDCard(){
        Bitmap mBitmap; //do something with that bastard bitmap
        mBitmap = getImage();
        if(mBitmap!=null){
            //todo
        }
        if (mBitmap == null){
            Log.d(TAG,"File on storage available?");
        }
    }


    private void checkSDCardStatus() {
        String state = Environment.getExternalStorageState();
        if (Environment.MEDIA_MOUNTED.equals(state)) {
            // We can read and write the media
            mExternalStorageAvailable = mExternalStorageWriteable = true;
        } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
            // We can only read the media
            mExternalStorageAvailable = true;
            mExternalStorageWriteable = false;
        } else {
            // Something else is wrong. It may be one of many other states, but
            // all we need
            // to know is we can neither read nor write
            mExternalStorageAvailable = mExternalStorageWriteable = false;
        }
    }
}