/*

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

 *  Contact for licensing options: <licensing-mcpttclient(at)mcopenplatform(dot)com>
 *
 * The original file was part of Open Source IMSDROID
 *  Copyright (C) 2010-2011, Mamadou Diop.
 *  Copyright (C) 2011, Doubango Telecom.
 *
 *
 * Contact: Mamadou Diop <diopmamadou(at)doubango(dot)org>
 *
 * This file is part of Open Source Doubango Framework.
 *
 * 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.model;
 
 import org.doubango.ngn.services.impl.NgnNetworkService;
 import org.doubango.ngn.utils.NgnObservableObject;
 import org.doubango.ngn.utils.NgnStringUtils;
 
 import android.net.wifi.ScanResult;
 import android.net.wifi.WifiConfiguration;
 import android.net.wifi.WifiManager;
 
 public class NgnAccessPoint extends NgnObservableObject {
 	// Constants used for different security types
 	public static final String AP_WPA2 = "WPA2";
 	public static final String AP_WPA = "WPA";
 	public static final String AP_WEP = "WEP";
 	public static final String AP_OPEN = "Open";
 	// For EAP Enterprise fields
 	public static final String AP_WPA_EAP = "WPA-EAP";
 	public static final String AP_IEEE8021X = "IEEE8021X";
 	public static final String[] AP_SECURITY_MODES = { AP_WEP, AP_WPA, AP_WPA2, AP_WPA_EAP, AP_IEEE8021X };
 
 	public static final int AP_WEP_PASSWORD_AUTO = 0;
 	public static final int AP_WEP_PASSWORD_ASCII = 1;
 	public static final int AP_WEP_PASSWORD_HEX = 2;
 	
 	private int mNetworkId;
 	private String mSSID;
 	private String mDescription;
 	private boolean mConnected;
 	private boolean mHasPassword;
 	private boolean mOpen;
 	private int mLevel;
 	private WifiConfiguration mConf;
 	private ScanResult mSR;
 	
 	public NgnAccessPoint(){
 		mNetworkId = -1;
 		mSSID = NgnStringUtils.emptyValue();
 		mLevel = 0;
 		mDescription = NgnStringUtils.emptyValue();
 	}
 	
 	public NgnAccessPoint(int networkId, String SSID){
 		this();
 		mNetworkId = networkId;
 		mSSID = SSID;
 	}
 	
 	public NgnAccessPoint(ScanResult sr){
 		this();
 		if((mSR = sr) != null){
 			mSSID = sr.SSID;
 			mLevel = WifiManager.calculateSignalLevel(mSR.level,
 					NgnNetworkService.sWifiSignalValues.length);
 			final String rs = getScanResultSecurity(mSR);
 			mOpen = NgnStringUtils.equals(rs, AP_OPEN, false);
 			mDescription = String.format("%s;%s", 
 					rs, 
 					mSR.capabilities);
 		}
 	}
 	
 	public NgnAccessPoint(WifiConfiguration conf){
 		this();
 		if((mConf = conf) != null){
 			mSSID = NgnStringUtils.unquote(mConf.SSID, "\"") ;
 			mNetworkId = conf.networkId;
 			mHasPassword = !NgnStringUtils.isNullOrEmpty(conf.preSharedKey);
 		}
 	}
 	
 	public WifiConfiguration getConf(){
 		return mConf;
 	}
 	
 	public ScanResult getSR(){
 		return mSR;
 	}
 	
 	public void setNetworkId(int networkId){
 		mNetworkId = networkId;
 	}
 	
 	public int getNetworkId(){
 		return mNetworkId;
 	}
 	
 	public String getSSID(){
 		return mSSID;
 	}
 	
 	public String getDescription(){
 		return mDescription;
 	}
 	
 	public int getLevel(){
 		return mLevel;
 	}
 	
 	public void setLevel(int level){
 		if(mLevel != level){
 			mLevel = level;
 			super.setChangedAndNotifyObservers(this);
 		}
 	}
 	
 	public boolean isConfigured(){
 		return (mNetworkId >= 0);
 	}
 	
 	public void setConnected(boolean connected){
 		if(mConnected != connected){
 			mConnected = connected;
 			super.setChangedAndNotifyObservers(this);
 		}
 	}
 	
 	public boolean isConnected(){
 		return mConnected;
 	}
 	
 	public boolean hasPassword(){
 		return mHasPassword;
 	}
 	
 	public boolean isOpen(){
 		return mOpen;
 	}
 	
 	public static String getScanResultSecurity(ScanResult scanResult) {
 		final String cap = scanResult.capabilities;
 		for (int i = NgnAccessPoint.AP_SECURITY_MODES.length - 1; i >= 0; i--) {
 			if (cap.contains(NgnAccessPoint.AP_SECURITY_MODES[i])) {
 				return NgnAccessPoint.AP_SECURITY_MODES[i];
 			}
 		}
 
 		return NgnAccessPoint.AP_OPEN;
 	}
 }