/*

 * 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.utils;
 
 import android.content.Context;
 
 import org.doubango.ngn.NgnEngine;
 import org.doubango.ngn.model.NgnContact;
 import org.doubango.ngn.sip.NgnSipPrefrences;
 import org.doubango.tinyWRAP.SipUri;
 
 public class NgnUriUtils {
 
 	private final static long MAX_PHONE_NUMBER = 1000000000000L;
 	private final static String INVALID_SIP_URI = "sip:invalid@open-ims.test";
 	
 	public static String getDisplayName(String uri){
 		String displayname = null;
 		if(!NgnStringUtils.isNullOrEmpty(uri)){
 			NgnContact contact = NgnEngine.getInstance().getContactService().getContactByUri(uri);
 			if(contact != null  && (displayname = contact.getDisplayName()) != null){
 				return displayname;
 			}
 			
 			final SipUri sipUri = new SipUri(uri);
 			if(sipUri.isValid()){
 				displayname = sipUri.getUserName();
 				contact = NgnEngine.getInstance().getContactService().getContactByPhoneNumber(displayname);
 				if(contact != null && !NgnStringUtils.isNullOrEmpty(contact.getDisplayName())){
 					displayname = contact.getDisplayName();
 				}
 			}
 			sipUri.delete();
 		}
 		
 		return displayname == null ? uri : displayname;
 	}
 	
 	public static String getUserName(String validUri){
 		final SipUri sipUri = new SipUri(validUri);
 		String userName = validUri;
 		if(sipUri.isValid()){
 			userName = sipUri.getUserName();
 		}
 		sipUri.delete();
 		return userName;
 	}
 	
 	public static boolean isValidSipUri(String uri){
 		return SipUri.isValid(uri);
 	}
 
 	public static String makeValidSipUri(String uri, Context context){
 		if(NgnStringUtils.isNullOrEmpty(uri)){
 			return NgnUriUtils.INVALID_SIP_URI;
 		}
 		if(uri.startsWith("sip:") || uri.startsWith("sips:")){
 			return uri.replace("#", "%23");
 		}
 		else if(uri.startsWith("tel:")){
 			return uri;
 		}
 		else{
 			if(uri.contains("@")){
 				return String.format("sip:%s", uri);
 			}
 			else{
 				String realm=null;
 				NgnSipPrefrences profileNow= NgnEngine.getInstance().getProfilesService().getProfileNow(context);
 				if(profileNow!=null)realm=profileNow.getRealm();
 				if(realm.startsWith("sip:") || realm.startsWith("sips:")){ // do not forget that IPv6 address could contain ":"
 					realm = realm.substring(realm.indexOf(":") + 1);
 				}
 				// FIXME: Should be done by doubango
 				return String.format("sip:%s@%s", 
 						uri.replace(" ", "").replace("(", "").replace(")", "").replace("-", "").replace("#", "%23"), 
 						realm);
 			}
 		}
 	}
 	
 	public static SipUri makeValidSipUriObj(String uri, Context context){
 		SipUri sipUri = new SipUri(makeValidSipUri(uri, context));
 		if(sipUri.isValid()){
 			return sipUri;
 		}
 		sipUri.delete();
 		return null;
 	}
 	
 	public static String getValidPhoneNumber(String uri){
 		if(uri != null && (uri.startsWith("sip:") || uri.startsWith("sip:") || uri.startsWith("tel:"))){
 			SipUri sipUri = new SipUri(uri);
 			if(sipUri.isValid()){
 				String userName = sipUri.getUserName();
 				if(userName != null){
 					try{
 						String scheme = sipUri.getScheme();
 						if(scheme != null && scheme.equals("tel")){
 							userName = userName.replace("-", "");
 						}
 						long result = Long.parseLong(userName.startsWith("+") ? userName.substring(1) : userName);
 						if(result < NgnUriUtils.MAX_PHONE_NUMBER){
 							return userName;
 						}
 					}
 					catch(NumberFormatException ne){ }
 					catch (Exception e){
 						e.printStackTrace();
 					}
 				}
 			}
 			sipUri.delete();
 		}
 		else{
 			try{
 				uri = uri.replace("-", "");
 				long result = Long.parseLong(uri.startsWith("+") ? uri.substring(1) : uri);
 				if(result < NgnUriUtils.MAX_PHONE_NUMBER){
 					return uri;
 				}
 			}
 			catch(NumberFormatException ne){ }
 			catch (Exception e) {
 				e.printStackTrace();
 			}
 		}
 		return null;
 	}
 	
 	
 }