package de.tudarmstadt.informatik.hostage.logging;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;

import de.tudarmstadt.informatik.hostage.R;
import de.tudarmstadt.informatik.hostage.commons.HelperUtils;
import de.tudarmstadt.informatik.hostage.ui.MainActivity;
import de.tudarmstadt.informatik.hostage.ui.ViewLog;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Environment;
import android.preference.PreferenceManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.widget.Toast;

public class SQLLogger implements Logger{
	Context context;
	DatabaseHandler dbh;
	public static final int JSON = 0x01;
	private int progressMax;
	private int lastUploadedAttackId;
	private NotificationCompat.Builder builder;
	private NotificationManager mNotifyManager;
	SharedPreferences pref;
	Editor editor;
	
	public SQLLogger(Context context){
		this.context = context;
		dbh = new DatabaseHandler(context);	
		pref = PreferenceManager.getDefaultSharedPreferences(context);
		editor = pref.edit();
	}

	public synchronized void write(Record record) {
		dbh.addRecord(record);
	}
	
	public void exportDatabase(int format){
		try {
			FileOutputStream log;
			String filename = "hostage_" + format + "_" + System.currentTimeMillis() + ".log";
			boolean externalStorage = pref.getBoolean("pref_external_storage", false);
			String externalLocation = pref.getString("pref_external_location", "");
			if(externalStorage){
				String root = Environment.getExternalStorageDirectory().toString();
				if(root != null && HelperUtils.isExternalStorageWritable()){					
					File dir = new File(root + externalLocation);
					dir.mkdirs();
					File file = new File(dir, filename);
					log = new FileOutputStream(file);
				}else {
					Toast.makeText(context, "Could not write to SD Card", Toast.LENGTH_SHORT).show();
					return;
				}

			} else{
				log = context.openFileOutput("hostage_" + format + "_" + System.currentTimeMillis() + ".log", Context.MODE_PRIVATE);
			}
			
			ArrayList<Record> records = dbh.getAllRecords();
			for(Record record : records){
					log.write((record.toString(format) + "\n").getBytes());
			}
			log.flush();
			log.close();
			Toast.makeText(context, externalStorage ? filename + " saved on external memory! " + externalLocation : filename + " saved on internal memory!", Toast.LENGTH_LONG).show();
		} catch (Exception e) {
			Toast.makeText(context, "Could not write to SD Card", Toast.LENGTH_SHORT).show();
			e.printStackTrace();
		}	
	}	
	
	public void uploadDatabase(){		
		lastUploadedAttackId = pref.getInt("LAST_UPLOADED_ATTACK_ID", -1);
		int currentAttackCount = dbh.getAttackCount();
		if(lastUploadedAttackId == currentAttackCount -1){
			Toast.makeText(context, "All data have already been uploaded.", Toast.LENGTH_SHORT).show();
			return;
		}
		// Show Upload Notification
		builder = new NotificationCompat.Builder(context)
							.setContentTitle(context.getString(R.string.app_name))
							.setContentText("Upload in progress...")
							.setTicker("Uploading Data...")
							.setSmallIcon(R.drawable.ic_launcher)	
							.setWhen(System.currentTimeMillis());	
		TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
		stackBuilder.addParentStack(MainActivity.class);
		stackBuilder.addNextIntent(new Intent());
		PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,
				PendingIntent.FLAG_UPDATE_CURRENT);
		builder.setContentIntent(resultPendingIntent);
		builder.setAutoCancel(true);
		builder.setOnlyAlertOnce(false);
		mNotifyManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
		mNotifyManager.notify(2, builder.build());
		new Thread(new Runnable() {

			  public void run() {				  
					HttpClient httpclient = HelperUtils.createHttpClient();
					ArrayList<Record> recordList = dbh.getRecordOfEachAttack(lastUploadedAttackId + 1);
					progressMax = recordList.size();		

							HttpPost httppost;
							int progressBarStatus = 1;
							for(Record record: recordList){
								try {
								httppost = new HttpPost(pref.getString("pref_upload", "https://ssi.cased.de"));
								StringEntity se = new StringEntity(record.toString(JSON));
								httppost.setEntity(se);
								httpclient.execute(httppost);
								builder.setProgress(progressMax, progressBarStatus, false);
								progressBarStatus++;
			                     // Update the progress bar
								mNotifyManager.notify(2, builder.build());
								} catch (Exception e) {
									// TODO Auto-generated catch block
									e.printStackTrace();
								}
							}

					// When the loop is finished, updates the notification
		            builder.setContentText("Upload complete")
		            	   .setTicker("Upload complete")
		            // Removes the progress bar
		                   .setProgress(0,0,false);
		            mNotifyManager.notify(2, builder.build());

			}}).start();
		editor.putInt("LAST_UPLOADED_ATTACK_ID",currentAttackCount - 1);
		editor.commit();				
	}
	
	public int getAttackCount(){
		return dbh.getAttackCount();
	}
	
	public int getAttackPerProtokollCount(String protocol){
		return dbh.getAttackPerProtokolCount(protocol);
	}
	
	public void clearLog(){
		dbh.clearData();
	}

	@Override
	public void close() {
		// TODO Auto-generated method stub		
	}
}