package de.tudarmstadt.informatik.hostage.commons;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.security.KeyStore;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;

import de.tudarmstadt.informatik.hostage.net.MySSLSocketFactory;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Environment;
import android.text.TextUtils;

public final class HelperUtils {

	public static String getSSID(Context context) {
		String ssid = null;
		ConnectivityManager connManager = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = connManager
				.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
		if (networkInfo != null && networkInfo.isConnected()) {
			final WifiManager wifiManager = (WifiManager) context
					.getSystemService(Context.WIFI_SERVICE);
			final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
			if (connectionInfo != null
					&& !TextUtils.isEmpty(connectionInfo.getSSID())) {
				ssid = connectionInfo.getSSID();
			}
		}
		return ssid;
	}

	public static String getBSSID(Context context) {
		String bssid = null;
		ConnectivityManager connManager = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = connManager
				.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
		if (networkInfo != null && networkInfo.isConnected()) {
			final WifiManager wifiManager = (WifiManager) context
					.getSystemService(Context.WIFI_SERVICE);
			final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
			if (connectionInfo != null
					&& !TextUtils.isEmpty(connectionInfo.getSSID())) {
				bssid = connectionInfo.getBSSID();
			}
		}
		return bssid;
	}

	public static String getInternalIP(Context context) {
		String ipAddress = null;
		ConnectivityManager connManager = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = connManager
				.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
		if (networkInfo != null && networkInfo.isConnected()) {
			final WifiManager wifiManager = (WifiManager) context
					.getSystemService(Context.WIFI_SERVICE);
			final WifiInfo connectionInfo = wifiManager.getConnectionInfo();
			if (connectionInfo != null) {
				try {
					ipAddress = InetAddress.getByAddress(
							unpackInetAddress(connectionInfo.getIpAddress()))
							.getHostAddress();
				} catch (UnknownHostException e) {
				}
			}
		}
		return ipAddress;
	}

	private static byte[] unpackInetAddress(int bytes) {
		return new byte[] { (byte) ((bytes) & 0xff),
				(byte) ((bytes >>> 8) & 0xff), (byte) ((bytes >>> 16) & 0xff),
				(byte) ((bytes >>> 24) & 0xff) };
	}

	public static String getExternalIP(Context context) {
		String ipAddress = null;
		try {
			HttpClient httpclient = new DefaultHttpClient();
			HttpGet httpget = new HttpGet(
					"http://ip2country.sourceforge.net/ip2c.php?format=JSON");
			HttpResponse response;

			response = httpclient.execute(httpget);

			HttpEntity entity = response.getEntity();
			entity.getContentLength();
			String str = EntityUtils.toString(entity);
			JSONObject json_data = new JSONObject(str);
			ipAddress = json_data.getString("ip");
		} catch (Exception e) {
		}
		return ipAddress;
	}

	/* Checks if external storage is available for read and write */
	public static boolean isExternalStorageWritable() {
		String state = Environment.getExternalStorageState();
		if (Environment.MEDIA_MOUNTED.equals(state)) {
			return true;
		}
		return false;
	}

	public static HttpClient createHttpClient() {
		try {
			KeyStore trustStore = KeyStore.getInstance(KeyStore
					.getDefaultType());
			trustStore.load(null, null);

			SSLSocketFactory sf = new MySSLSocketFactory(trustStore);
			sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);

			HttpParams params = new BasicHttpParams();
			HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
			HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);

			SchemeRegistry registry = new SchemeRegistry();
			registry.register(new Scheme("http", PlainSocketFactory
					.getSocketFactory(), 80));
			registry.register(new Scheme("https", sf, 443));

			ClientConnectionManager ccm = new ThreadSafeClientConnManager(
					params, registry);

			return new DefaultHttpClient(ccm, params);
		} catch (Exception e) {
			return new DefaultHttpClient();
		}
	}
}