/**
* BigBlueButton open source conferencing system - http://www.bigbluebutton.org/
* 
* Copyright (c) 2012 BigBlueButton Inc. and by respective authors (see below).
*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation; either version 3.0 of the License, or (at your option) any later
* version.
* 
* BigBlueButton 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
*
*/

package org.bigbluebutton.presentation;

import static org.bigbluebutton.presentation.FileTypeConstants.*;

import java.util.ArrayList;
import java.util.List;

@SuppressWarnings("serial")
public final class SupportedFileTypes {
	// Set as private to prevent instantiation
	private SupportedFileTypes() {} 
	
	private static final List<String> SUPPORTED_FILE_LIST = new ArrayList<String>(15) {		
		{				
			// Add all the supported files				
			add(XLS); add(XLSX);	add(DOC); add(DOCX); add(PPT); add(PPTX);				
			add(ODT); add(RTF); add(TXT); add(ODS); add(ODP); add(PDF);
			add(JPG); add(JPEG); add(PNG);
		}
	};
		
	private static final List<String> OFFICE_FILE_LIST = new ArrayList<String>(11) {		
		{			
			// Add all Offile file types
			add(XLS); add(XLSX);	add(DOC); add(DOCX); add(PPT); add(PPTX);				
			add(ODT); add(RTF); add(TXT); add(ODS); add(ODP); 
		}
	};
	
	private static final List<String> IMAGE_FILE_LIST = new ArrayList<String>(3) {		
		{	
			// Add all image file types
			add(JPEG); add(JPG);	add(PNG);
		}
	};
	
	/*
	 * Returns if the file with extension is supported.
	 */
	public static boolean isFileSupported(String fileExtension) {
		return SUPPORTED_FILE_LIST.contains(fileExtension.toLowerCase());
	}
	
	/*
	 * Returns if the office file is supported.
	 */
	public static boolean isOfficeFile(String fileExtension) {
		return OFFICE_FILE_LIST.contains(fileExtension.toLowerCase());
	}
	
	public static boolean isPdfFile(String fileExtension) {
		return "pdf".equalsIgnoreCase(fileExtension);
	}
	
	/*
	 * Returns if the iamge file is supported
	 */
	public static boolean isImageFile(String fileExtension) {
		return IMAGE_FILE_LIST.contains(fileExtension.toLowerCase());
	}
}