[Java] VideoUtils

[Java] VideoUtils

package com.litil.utils;


/**
 * This class contains methods concerning videos. For now, it can help 
 * you check if an url is valid and convert a "classic" url to an 
 * "embed" one.
 *
 */
public class VideoUtils {
	
	private static final String VIDEO_TYPE_YOUTUBE = "youtube";
	private static final String VIDEO_TYPE_DAILYMOTION = "dailymotion";
	private static final String VIDEO_TYPE_VIMEO = "vimeo";

	
	
	/**
	 * Cette méthode retourne le type de vidéo correspondant à l'url 
	 * passée en paramètre.
	 * 
	 * @param url
	 * 
	 * @return le type de la vidéo, soit youtube/dailymotion/vimeo
	 */
	public static String getVideoType(String url){
		String videoType = null;
		
		if (url != null){
			if (checkYoutubeUrl(url)){
				videoType = VIDEO_TYPE_YOUTUBE;
			} else if (checkDailymotionUrl(url)){
				videoType = VIDEO_TYPE_DAILYMOTION;
			} else if(checkVimeoUrl(url)){
				videoType = VIDEO_TYPE_VIMEO;
			}
		}
		
		return videoType;
	}
	
	
	
	/**
	 * Cette méthode retourne l'url embed à partir d'une url classique
	 * 
	 * @param url classique
	 * 
	 * @return l'url embed
	 */
	public static String convertUrl(String url){
		String convertedUrl = null;
		
		if (url != null){
			if (checkYoutubeUrl(url)){
				convertedUrl = url.replace("https://", "//");
				convertedUrl = convertedUrl.replace("http://", "//");
				convertedUrl = convertedUrl.replace("watch?v=", "embed/");
			
			} else if (checkDailymotionUrl(url)){
				convertedUrl = url.replace("https://", "//");
				convertedUrl = convertedUrl.replace("http://", "//");
				convertedUrl = convertedUrl.substring(0, convertedUrl.indexOf("_"));
				convertedUrl = convertedUrl.replace("/video/", "/embed/video/");
				
			} else if(checkVimeoUrl(url)){
				convertedUrl = url.replace("https://", "//player.");
				convertedUrl = convertedUrl.replace("http://", "//player.");
				convertedUrl = convertedUrl.replace(".com/", ".com/video/");
				
			}
		}
		
		return convertedUrl;
	}
	
	
	
	/**
	 * This method checks that the given url is a valid Youtube url.
	 * 
	 * @param url
	 * 
	 * @return true if it's a valid Youtube url
	 */
	private static boolean checkYoutubeUrl(String url){
		return (url.toLowerCase().indexOf("www.youtube.com") >= 0 || url.toLowerCase().indexOf("www.youtu.be") >= 0 || url.toLowerCase().indexOf("youtu.be") >= 0);
	}
	
	/**
	 * This method checks that the given url is a valid Dailymotion url.
	 * 
	 * @param url
	 * 
	 * @return true if it's a valid Dailymotion url
	 */
	private static boolean checkDailymotionUrl(String url){
		return (url.toLowerCase().indexOf("www.dailymotion.com") >= 0 || url.toLowerCase().indexOf("://dai.ly") >= 0);
	}
	
	/**
	 * This method checks that the given url is a valid Vimeo url.
	 * 
	 * @param url
	 * 
	 * @return true if it's a valid Vimeo url
	 */
	private static boolean checkVimeoUrl(String url){
		return (url.toLowerCase().indexOf("://vimeo.com") >= 0 || url.toLowerCase().indexOf("player.vimeo.com") >= 0);
	}
	
	
}