Implement BlogSharingManager

briar-api/src/org/briarproject/api/blogs/BlogConstants.java

@@ -22,6 +22,12 @@ public interface BlogConstants {
 	/** The maximum length of a blog post's body in bytes. */
 	int MAX_BLOG_POST_BODY_LENGTH = MAX_MESSAGE_BODY_LENGTH - 1024;
 
+	/* Blog Sharing Constants */
+	String BLOG_TITLE = "blogTitle";
+	String BLOG_DESC = "blogDescription";
+	String BLOG_AUTHOR_NAME = "blogAuthorName";
+	String BLOG_PUBLIC_KEY = "blogPublicKey";
+
 	// Metadata keys
 	String KEY_DESCRIPTION = "description";
 	String KEY_TITLE = "title";

briar-api/src/org/briarproject/api/blogs/BlogInvitationMessage.java

@@ -0,0 +1,26 @@
+package org.briarproject.api.blogs;
+
+import org.briarproject.api.clients.SessionId;
+import org.briarproject.api.contact.ContactId;
+import org.briarproject.api.sharing.InvitationMessage;
+import org.briarproject.api.sync.MessageId;
+
+public class BlogInvitationMessage extends InvitationMessage {
+
+	private final String blogTitle;
+
+	public BlogInvitationMessage(MessageId id, SessionId sessionId,
+			ContactId contactId, String blogTitle, String message,
+			boolean available, long time, boolean local, boolean sent,
+			boolean seen, boolean read) {
+
+		super(id, sessionId, contactId, message, available, time, local, sent,
+				seen, read);
+		this.blogTitle = blogTitle;
+	}
+
+	public String getBlogTitle() {
+		return blogTitle;
+	}
+
+}

briar-api/src/org/briarproject/api/blogs/BlogSharingManager.java

@@ -0,0 +1,60 @@
+package org.briarproject.api.blogs;
+
+import org.briarproject.api.contact.Contact;
+import org.briarproject.api.contact.ContactId;
+import org.briarproject.api.db.DbException;
+import org.briarproject.api.sharing.SharingManager;
+import org.briarproject.api.sync.ClientId;
+import org.briarproject.api.sync.GroupId;
+
+import java.util.Collection;
+
+public interface BlogSharingManager
+		extends SharingManager<Blog, BlogInvitationMessage> {
+
+	/**
+	 * Returns the unique ID of the blog sharing client.
+	 */
+	ClientId getClientId();
+
+	/**
+	 * Sends an invitation to share the given blog with the given contact
+	 * and sends an optional message along with it.
+	 */
+	void sendInvitation(GroupId groupId, ContactId contactId,
+			String message) throws DbException;
+
+	/**
+	 * Responds to a pending blog invitation
+	 */
+	void respondToInvitation(Blog b, Contact c, boolean accept)
+			throws DbException;
+
+	/**
+	 * Returns all blogs sharing messages sent by the Contact
+	 * identified by contactId.
+	 */
+	Collection<BlogInvitationMessage> getInvitationMessages(
+			ContactId contactId) throws DbException;
+
+	/**
+	 * Returns all blogs to which the user could subscribe.
+	 */
+	Collection<Blog> getAvailable() throws DbException;
+
+	/**
+	 * Returns all contacts who are sharing the given blog with us.
+	 */
+	Collection<Contact> getSharedBy(GroupId g) throws DbException;
+
+	/**
+	 * Returns the IDs of all contacts with whom the given blog is shared.
+	 */
+	Collection<Contact> getSharedWith(GroupId g) throws DbException;
+
+	/**
+	 * Returns true if the blog not already shared and no invitation is open
+	 */
+	boolean canBeShared(GroupId g, Contact c) throws DbException;
+
+}

briar-api/src/org/briarproject/api/blogs/BlogSharingMessage.java

@@ -0,0 +1,89 @@
+package org.briarproject.api.blogs;
+
+import org.briarproject.api.FormatException;
+import org.briarproject.api.clients.SessionId;
+import org.briarproject.api.data.BdfDictionary;
+import org.briarproject.api.data.BdfList;
+import org.briarproject.api.sharing.SharingMessage.Invitation;
+import org.briarproject.api.sync.GroupId;
+
+import static org.briarproject.api.blogs.BlogConstants.BLOG_AUTHOR_NAME;
+import static org.briarproject.api.blogs.BlogConstants.BLOG_DESC;
+import static org.briarproject.api.blogs.BlogConstants.BLOG_PUBLIC_KEY;
+import static org.briarproject.api.blogs.BlogConstants.BLOG_TITLE;
+import static org.briarproject.api.sharing.SharingConstants.INVITATION_MSG;
+import static org.briarproject.api.sharing.SharingConstants.SESSION_ID;
+
+public interface BlogSharingMessage {
+
+	class BlogInvitation extends Invitation {
+
+		private final String blogTitle;
+		private final String blogDesc;
+		private final String blogAuthorName;
+		private final byte[] blogPublicKey;
+
+		public BlogInvitation(GroupId groupId, SessionId sessionId,
+				String blogTitle, String blogDesc, String blogAuthorName,
+				byte[] blogPublicKey, String message) {
+
+			super(groupId, sessionId, message);
+
+			this.blogTitle = blogTitle;
+			this.blogDesc = blogDesc;
+			this.blogAuthorName = blogAuthorName;
+			this.blogPublicKey = blogPublicKey;
+		}
+
+		@Override
+		public BdfList toBdfList() {
+			BdfList list = super.toBdfList();
+			list.add(blogTitle);
+			list.add(blogDesc);
+			list.add(BdfList.of(blogAuthorName, blogPublicKey));
+			if (message != null) list.add(message);
+			return list;
+		}
+
+		@Override
+		public BdfDictionary toBdfDictionary() {
+			BdfDictionary d = toBdfDictionaryHelper();
+			d.put(BLOG_TITLE, blogTitle);
+			d.put(BLOG_DESC, blogDesc);
+			d.put(BLOG_AUTHOR_NAME, blogAuthorName);
+			d.put(BLOG_PUBLIC_KEY, blogPublicKey);
+			if (message != null) d.put(INVITATION_MSG, message);
+			return d;
+		}
+
+		public static BlogInvitation from(GroupId groupId, BdfDictionary d)
+				throws FormatException {
+
+			SessionId sessionId = new SessionId(d.getRaw(SESSION_ID));
+			String blogTitle = d.getString(BLOG_TITLE);
+			String blogDesc = d.getString(BLOG_DESC);
+			String blogAuthorName = d.getString(BLOG_AUTHOR_NAME);
+			byte[] blogPublicKey = d.getRaw(BLOG_PUBLIC_KEY);
+			String message = d.getOptionalString(INVITATION_MSG);
+
+			return new BlogInvitation(groupId, sessionId, blogTitle,
+					blogDesc, blogAuthorName, blogPublicKey, message);
+		}
+
+		public String getBlogTitle() {
+			return blogTitle;
+		}
+
+		public String getBlogDesc() {
+			return blogDesc;
+		}
+
+		public String getBlogAuthorName() {
+			return blogAuthorName;
+		}
+
+		public byte[] getBlogPublicKey() {
+			return blogPublicKey;
+		}
+	}
+}

briar-api/src/org/briarproject/api/event/BlogInvitationReceivedEvent.java

@@ -0,0 +1,18 @@
+package org.briarproject.api.event;
+
+import org.briarproject.api.blogs.Blog;
+import org.briarproject.api.contact.ContactId;
+
+public class BlogInvitationReceivedEvent extends InvitationReceivedEvent {
+
+	private final Blog blog;
+
+	public BlogInvitationReceivedEvent(Blog blog, ContactId contactId) {
+		super(contactId);
+		this.blog = blog;
+	}
+
+	public Blog getBlog() {
+		return blog;
+	}
+}

briar-api/src/org/briarproject/api/event/BlogInvitationResponseReceivedEvent.java

@@ -0,0 +1,18 @@
+package org.briarproject.api.event;
+
+import org.briarproject.api.contact.ContactId;
+
+public class BlogInvitationResponseReceivedEvent extends InvitationResponseReceivedEvent {
+
+	private final String blogTitle;
+
+	public BlogInvitationResponseReceivedEvent(String blogTitle,
+			ContactId contactId) {
+		super(contactId);
+		this.blogTitle = blogTitle;
+	}
+
+	public String getBlogTitle() {
+		return blogTitle;
+	}
+}