/*
 

 *  Copyright (C) 2020, University of the Basque Country (UPV/EHU)

 *
 * Contact for licensing options: <licensing-mcpttclient(at)mcopenplatform(dot)com>
 *
 * This file is part of MCOP MCPTT Client
 *
 * This is free software: you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * This is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 package org.doubango.ngn.services.impl.ms;
 
 
 import android.content.Context;
 
 import org.doubango.ngn.datatype.ms.gms.ns.xcap_diff.XcapDiff;
 import org.doubango.utils.Utils;
 import org.simpleframework.xml.Serializer;
 import org.simpleframework.xml.convert.AnnotationStrategy;
 import org.simpleframework.xml.core.Persister;
 import org.simpleframework.xml.strategy.Strategy;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Calendar;
 
 
 class MSUtils {
     private final static String TAG = Utils.getTAG(MSUtils.class.getCanonicalName());
 
 
 
     //INIT utils xml
 
 
 
         //INIT xcap-diff
 
     protected static XcapDiff getXcapDiff(String string) throws Exception {
         return getXcapDiff(string.getBytes());
     }
 
     protected static XcapDiff getXcapDiff(byte[] bytes) throws Exception {
         return getXcapDiff(new ByteArrayInputStream(bytes));
     }
     private static XcapDiff getXcapDiff(InputStream stream) throws Exception {
         if(stream==null)return null;
         Strategy strategy = new AnnotationStrategy();
         Serializer serializer = new Persister(strategy);
         return serializer.read(XcapDiff.class,stream);
     }
 
 
     private static InputStream getOutputStreamOfXcapDiff(Context context, XcapDiff xcapDiff) throws Exception {
         if(xcapDiff==null)return null;
         Strategy strategy = new AnnotationStrategy();
         Serializer serializer = new Persister(strategy);
         File outputDir = context.getCacheDir(); // context being the Activity pointer
         File outputFile = File.createTempFile(String.valueOf(Calendar.getInstance().getTimeInMillis()), "txt", outputDir);
         serializer.write(xcapDiff,outputFile);
         return new FileInputStream(outputFile);
     }
 
     private static byte[] getBytesOfXcapDiff(Context context,XcapDiff xcapDiff) throws Exception {
         InputStream inputStream=getOutputStreamOfXcapDiff(context,xcapDiff);
         if(inputStream==null)return null;
         return readBytes(inputStream);
     }
 
     public   static String  getStringOfXcapDiff(Context context,XcapDiff xcapDiff) throws Exception {
         return new String(getBytesOfXcapDiff(context,xcapDiff)).trim();
     }
 
 
         //END xcap-diff
 
 
     private static byte[] readBytes(InputStream inputStream) throws IOException {
 
         ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();
 
 
         int bufferSize = 1024;
         byte[] buffer = new byte[bufferSize];
 
 
         int len = 0;
         while ((len = inputStream.read(buffer)) != -1) {
             byteBuffer.write(buffer, 0, len);
         }
 
 
         return byteBuffer.toByteArray();
     }
     //END utils xml
 
 
     //INIT files RAW
     private static InputStream getFileRaw(Context context,String nameFileWithoutExtension){
         if(context==null || nameFileWithoutExtension==null || nameFileWithoutExtension.isEmpty())return null;
         InputStream ins = context.getResources().openRawResource(
                 context.getResources().getIdentifier(nameFileWithoutExtension,
                         "raw", context.getPackageName()));
         return ins;
     }
     //END files RAW
 
 
 
 
 
 }