Picasa Web Album Command Line Upload

I wrote this code some time ago before Picasa Web Albums had a good uploading solution for Linux users. This code uses the the Google Data APIs. While there is a better upload solution for Linux now (Picasa for Linux) some of you, like me, might prefer a command line driven upload method. This allows you to upload a batch of photos by issuing a command like this:

picasa user password album delay photos*

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So, for example, you might issue a command like this:

picasa dburger password Honolulu 3000 *.jpg

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This would initiate an upload of all the jpg files in the current directory to my Picasa Web Albums under an album name of Honolulu with a throttling delay of 3 seconds. The picasa script, which calls my java code, is a simple script as follows:

	#!/usr/bin/env bash
	java -cp "/home/dburger/jars/*:/home/dburger/bin/" PicasaUploader "$@"

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And finally, the java code that does all the magic, note that you will need to compile / run against some Google Data API jar files as indicated in the comments:

	import com.google.gdata.client.photos.PicasawebService;
	import com.google.gdata.data.appsforyourdomain.provisioning.UserFeed;
	import com.google.gdata.data.appsforyourdomain.provisioning.UserEntry;
	import com.google.gdata.data.PlainTextConstruct;
	import com.google.gdata.data.media.MediaFileSource;
	import com.google.gdata.data.photos.AlbumEntry;
	import com.google.gdata.data.photos.PhotoEntry;
	import java.io.File;
	import java.io.IOException;
	import java.net.URL;
	// compile: javac -classpath "/home/dburger/jars/*" PicasaUploader.java
	// execute: java -classpath "/home/dburger/jars/*:." PicasaUploader
	public class PicasaUploader {
	public static final String APP = "loosedog@gmail.com-picasa-uploader";
	public static final String BASE_URL =
	"http://picasaweb.google.com/data/feed/api/user/";
	public static void main(String[] args) throws Exception {
	if (args.length < 5) bail();
	String user = args[0];
	String pass = args[1];
	String album = args[2];
	int delay = 0;
	try {
	delay = Integer.parseInt(args[3]);
	} catch (NumberFormatException exc) {
	bail();
	}
	PicasawebService service = new PicasawebService(APP);
	service.setUserCredentials(user, pass);
	if (!albumExists(album, user, service)) createAlbum(album, user, service);
	URL albumUrl = new URL(BASE_URL + user + "/album/" + album);
	for (int i = 4; i < args.length; i++) {
	String file = args[i];
	MediaFileSource media = new MediaFileSource(new File(file), "image/jpeg");
	System.out.print("file: " + file);
	PhotoEntry retPhoto = service.insert(albumUrl, PhotoEntry.class, media);
	System.out.println(" complete.");
	Thread.sleep(delay);
	}
	}
	private static boolean albumExists(String album,
	String user,PicasawebService service) throws Exception {
	URL albumsUrl = new URL(BASE_URL + user + "?kind=album");
	UserFeed userFeed = service.getFeed(albumsUrl, UserFeed.class);
	for (UserEntry ue : userFeed.getEntries()) {
	if (ue.getTitle().getPlainText().equals(album)) return true;
	}
	return false;
	}
	private static AlbumEntry createAlbum(String album, String user,
	PicasawebService service) throws Exception {
	URL postUrl = new URL(BASE_URL + user);
	AlbumEntry entry = new AlbumEntry();
	entry.setTitle(new PlainTextConstruct(album));
	return service.insert(postUrl, entry);
	}
	public static void bail() {
	System.err.println(usage());
	System.exit(1);
	}
	public static String usage() {
	return "provide arguments: user password album delay photos*";
	}
	}

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