/*

 *  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.profiles;
 
 import android.content.Context;

 import android.os.Build;

 import android.os.Environment;
 import android.util.Log;
 

 import org.doubango.ngn.BuildConfig;

 import org.doubango.ngn.datatype.profiles.Profiles;
 import org.doubango.ngn.sip.NgnSipPrefrences;
 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 ProfilesUtils {
     private final static String TAG = Utils.getTAG(ProfilesUtils.class.getCanonicalName());
     //INIT utils xml
     private final static String NAME_FILE_PROFILES_RAW="profiles";
 
 
     protected static Profiles getProfiles(Context context) throws Exception {
         if(context==null)return null;

         if(BuildConfig.DEBUG)Log.d(TAG,"getProfiles from raw");

         InputStream inputStream=getFileRaw(context,NAME_FILE_PROFILES_RAW);
         if(inputStream==null)return null;
         return getProfiles(inputStream);
 
     }
     protected static Profiles getProfiles(String string) throws Exception {

         if(BuildConfig.DEBUG)Log.d(TAG,"getProfiles: "+string);

         return getProfiles(string.getBytes());
     }
 
     protected static Profiles getProfiles(byte[] bytes) throws Exception {
         //InputStream stream = new ByteArrayInputStream(profilesDefault.getBytes());
         return getProfiles(new ByteArrayInputStream(bytes));
         //return getProfiles(stream);
     }
     protected static Profiles getProfiles(InputStream stream) throws Exception {
         if(stream==null )return null;
         Strategy strategy = new AnnotationStrategy();
         Serializer serializer = new Persister(strategy);
         Profiles preferences=serializer.read(Profiles.class,stream);
         return preferences;
     }
 
 
     protected static InputStream getOutputStreamOfProfiles(Context context, Profiles profiles) throws Exception {
         if(profiles==null)return null;
         if(context==null){
             Log.e(TAG,"Parameter cannot be null.");
             return null;
         }
         Strategy strategy = new AnnotationStrategy();
         Serializer serializer = new Persister(strategy);
         File outputDir = context.getCacheDir();
         File outputFile = File.createTempFile(String.valueOf(Calendar.getInstance().getTimeInMillis()), "txt", outputDir);
         serializer.write(profiles,outputFile);
         InputStream inputStream = new FileInputStream(outputFile);
         return inputStream;
     }
 
     protected static byte[] getBytesOfProfiles(Context context, Profiles profiles) throws Exception {
         InputStream inputStream=getOutputStreamOfProfiles(context,profiles);
         if(inputStream==null)return null;
         return readBytes(inputStream);
     }
 
     protected  static String  getStringOfProfiles(Context context,Profiles profiles) throws Exception {
         byte[] bytes=getBytesOfProfiles(context,profiles);
         if(bytes==null)return null;
         return new String(bytes).trim();
     }
 
     protected static NgnSipPrefrences getNgnSipPrefrences(String string) throws Exception {
         return getNgnSipPrefrences(string.getBytes());
     }
 
     protected static NgnSipPrefrences getNgnSipPrefrences(byte[] bytes) throws Exception {
         return getNgnSipPrefrences(new ByteArrayInputStream(bytes));
     }
     
     private static NgnSipPrefrences getNgnSipPrefrences(InputStream stream) throws Exception {
         if(stream==null)return null;
         Strategy strategy = new AnnotationStrategy();
         Serializer serializer = new Persister(strategy);
         NgnSipPrefrences preference=serializer.read(NgnSipPrefrences.class,stream);
         return preference;
     }
 
 
     private static InputStream getOutputStreamOfNgnSipPrefrences(Context context, NgnSipPrefrences preference) throws Exception {
         if(preference==null)return null;
         if(context==null){
             Log.e(TAG,"Parameter cannot be 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(preference,outputFile);
         InputStream inputStream = new FileInputStream(outputFile);
         return inputStream;
     }
 
     protected static byte[] getBytesNgnSipPrefrences(Context context, NgnSipPrefrences preference) throws Exception {
         InputStream inputStream=getOutputStreamOfNgnSipPrefrences(context,preference);
         if(inputStream==null)return null;
         return readBytes(inputStream);
     }
 
     protected  static String  getStringOfNgnSipPrefrences(Context context,NgnSipPrefrences preference) throws Exception {
         byte[] bytes=getBytesNgnSipPrefrences(context,preference);
         if(bytes==null)return null;
         return new String(bytes).trim();
     }
     //END utils xml
 
     //INIT Utils
     private static byte[] readBytes(InputStream inputStream) throws IOException {
 
         ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();
 
         // storage overwritten on each iteration in bytes
         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();
     }
 
     /* Checks if external storage is available to read and write */
     private static boolean isExternalStorageWritable() {
         String state = Environment.getExternalStorageState();
         if (Environment.MEDIA_MOUNTED.equals(state)) {
             return true;
         }
         return false;
     }
 
     /* Checks if external storage is available to at least read */
     private static boolean isExternalStorageReadable() {
         String state = Environment.getExternalStorageState();
         if (Environment.MEDIA_MOUNTED.equals(state) ||
                 Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
             return true;
         }
         return false;
     }
     //END Utils
 
     //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
 
 }