Unify all private message requests in one PrivateRequest class

briar-android/src/main/java/org/briarproject/briar/android/contact/ContactListFragment.java

@@ -43,8 +43,8 @@ import org.briarproject.briar.api.introduction.event.IntroductionRequestReceived
 import org.briarproject.briar.api.introduction.event.IntroductionResponseReceivedEvent;
 import org.briarproject.briar.api.messaging.ConversationManager;
 import org.briarproject.briar.api.messaging.PrivateMessageHeader;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 import org.briarproject.briar.api.messaging.event.PrivateMessageReceivedEvent;
-import org.briarproject.briar.api.sharing.InvitationRequest;
 import org.briarproject.briar.api.sharing.InvitationResponse;
 import org.briarproject.briar.api.sharing.event.InvitationRequestReceivedEvent;
 import org.briarproject.briar.api.sharing.event.InvitationResponseReceivedEvent;
@@ -271,7 +271,7 @@ public class ContactListFragment extends BaseFragment implements EventListener {
 			LOG.info("Invitation Request received, update item");
 			InvitationRequestReceivedEvent m =
 					(InvitationRequestReceivedEvent) e;
-			InvitationRequest ir = m.getRequest();
+			PrivateRequest ir = m.getRequest();
 			updateItem(m.getContactId(), ir);
 		} else if (e instanceof InvitationResponseReceivedEvent) {
 			LOG.info("Invitation response received, updating item");

briar-android/src/main/java/org/briarproject/briar/android/contact/ConversationActivity.java

@@ -62,7 +62,6 @@ import org.briarproject.briar.api.client.ProtocolStateException;
 import org.briarproject.briar.api.client.SessionId;
 import org.briarproject.briar.api.forum.ForumSharingManager;
 import org.briarproject.briar.api.introduction.IntroductionManager;
-import org.briarproject.briar.api.introduction.IntroductionMessage;
 import org.briarproject.briar.api.introduction.IntroductionRequest;
 import org.briarproject.briar.api.introduction.IntroductionResponse;
 import org.briarproject.briar.api.introduction.event.IntroductionRequestReceivedEvent;
@@ -71,10 +70,9 @@ import org.briarproject.briar.api.messaging.MessagingManager;
 import org.briarproject.briar.api.messaging.PrivateMessage;
 import org.briarproject.briar.api.messaging.PrivateMessageFactory;
 import org.briarproject.briar.api.messaging.PrivateMessageHeader;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 import org.briarproject.briar.api.messaging.event.PrivateMessageReceivedEvent;
 import org.briarproject.briar.api.privategroup.invitation.GroupInvitationManager;
-import org.briarproject.briar.api.sharing.InvitationMessage;
-import org.briarproject.briar.api.sharing.InvitationRequest;
 import org.briarproject.briar.api.sharing.InvitationResponse;
 import org.briarproject.briar.api.sharing.event.InvitationRequestReceivedEvent;
 import org.briarproject.briar.api.sharing.event.InvitationResponseReceivedEvent;
@@ -344,15 +342,15 @@ public class ConversationActivity extends BriarActivity
 				long start = now();
 				Collection<PrivateMessageHeader> headers =
 						messagingManager.getMessageHeaders(contactId);
-				Collection<IntroductionMessage> introductions =
+				Collection<PrivateMessageHeader> introductions =
 						introductionManager.getIntroductionMessages(contactId);
-				Collection<InvitationMessage> forumInvitations =
+				Collection<PrivateMessageHeader> forumInvitations =
 						forumSharingManager.getInvitationMessages(contactId);
-				Collection<InvitationMessage> blogInvitations =
+				Collection<PrivateMessageHeader> blogInvitations =
 						blogSharingManager.getInvitationMessages(contactId);
-				Collection<InvitationMessage> groupInvitations =
+				Collection<PrivateMessageHeader> groupInvitations =
 						groupInvitationManager.getInvitationMessages(contactId);
-				List<InvitationMessage> invitations = new ArrayList<>(
+				List<PrivateMessageHeader> invitations = new ArrayList<>(
 						forumInvitations.size() + blogInvitations.size() +
 								groupInvitations.size());
 				invitations.addAll(forumInvitations);
@@ -370,8 +368,8 @@ public class ConversationActivity extends BriarActivity
 
 	private void displayMessages(int revision,
 			Collection<PrivateMessageHeader> headers,
-			Collection<IntroductionMessage> introductions,
-			Collection<InvitationMessage> invitations) {
+			Collection<PrivateMessageHeader> introductions,
+			Collection<PrivateMessageHeader> invitations) {
 		runOnUiThreadUnlessDestroyed(() -> {
 			if (revision == adapter.getRevision()) {
 				adapter.incrementRevision();
@@ -397,8 +395,8 @@ public class ConversationActivity extends BriarActivity
 	@SuppressWarnings("ConstantConditions")
 	private List<ConversationItem> createItems(
 			Collection<PrivateMessageHeader> headers,
-			Collection<IntroductionMessage> introductions,
-			Collection<InvitationMessage> invitations) {
+			Collection<PrivateMessageHeader> introductions,
+			Collection<PrivateMessageHeader> invitations) {
 		int size =
 				headers.size() + introductions.size() + invitations.size();
 		List<ConversationItem> items = new ArrayList<>(size);
@@ -409,7 +407,7 @@ public class ConversationActivity extends BriarActivity
 			else item.setBody(body);
 			items.add(item);
 		}
-		for (IntroductionMessage m : introductions) {
+		for (PrivateMessageHeader m : introductions) {
 			ConversationItem item;
 			if (m instanceof IntroductionRequest) {
 				IntroductionRequest i = (IntroductionRequest) m;
@@ -420,11 +418,11 @@ public class ConversationActivity extends BriarActivity
 			}
 			items.add(item);
 		}
-		for (InvitationMessage i : invitations) {
+		for (PrivateMessageHeader i : invitations) {
 			ConversationItem item;
-			if (i instanceof InvitationRequest) {
-				InvitationRequest r = (InvitationRequest) i;
-				item = ConversationItem.from(this, contactName, r);
+			if (i instanceof PrivateRequest) {
+				item = ConversationItem
+						.from(this, contactName, (PrivateRequest) i);
 			} else {
 				InvitationResponse r = (InvitationResponse) i;
 				item = ConversationItem.from(this, contactName, r);
@@ -525,7 +523,7 @@ public class ConversationActivity extends BriarActivity
 					(InvitationRequestReceivedEvent) e;
 			if (event.getContactId().equals(contactId)) {
 				LOG.info("Invitation received, adding...");
-				InvitationRequest ir = event.getRequest();
+				PrivateRequest ir = event.getRequest();
 				handleInvitationRequest(ir);
 			}
 		} else if (e instanceof InvitationResponseReceivedEvent) {
@@ -586,7 +584,7 @@ public class ConversationActivity extends BriarActivity
 		});
 	}
 
-	private void handleInvitationRequest(InvitationRequest m) {
+	private void handleInvitationRequest(PrivateRequest m) {
 		getContactNameTask().addListener(new FutureTaskListener<String>() {
 			@Override
 			public void onSuccess(String contactName) {

briar-android/src/main/java/org/briarproject/briar/android/contact/ConversationItem.java

@@ -16,10 +16,11 @@ import org.briarproject.briar.api.forum.ForumInvitationResponse;
 import org.briarproject.briar.api.introduction.IntroductionRequest;
 import org.briarproject.briar.api.introduction.IntroductionResponse;
 import org.briarproject.briar.api.messaging.PrivateMessageHeader;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 import org.briarproject.briar.api.privategroup.invitation.GroupInvitationRequest;
 import org.briarproject.briar.api.privategroup.invitation.GroupInvitationResponse;
-import org.briarproject.briar.api.sharing.InvitationRequest;
 import org.briarproject.briar.api.sharing.InvitationResponse;
+import org.briarproject.briar.api.sharing.Shareable;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.NotThreadSafe;
@@ -86,35 +87,6 @@ abstract class ConversationItem {
 		}
 	}
 
-	static ConversationItem from(Context ctx, String contactName,
-			IntroductionRequest ir) {
-		if (ir.isLocal()) {
-			String text = ctx.getString(R.string.introduction_request_sent,
-					contactName, ir.getName());
-			return new ConversationNoticeOutItem(ir.getId(),
-					ir.getGroupId(), text, ir.getMessage(), ir.getTimestamp(),
-					ir.isSent(), ir.isSeen());
-		} else {
-			String text;
-			if (ir.wasAnswered()) {
-				text = ctx.getString(
-						R.string.introduction_request_answered_received,
-						contactName, ir.getName());
-			} else if (ir.contactExists()){
-				text = ctx.getString(
-						R.string.introduction_request_exists_received,
-						contactName, ir.getName());
-			} else {
-				text = ctx.getString(R.string.introduction_request_received,
-						contactName, ir.getName());
-			}
-			return new ConversationRequestItem(ir.getId(),
-					ir.getGroupId(), INTRODUCTION, ir.getSessionId(), text,
-					ir.getMessage(), ir.getTimestamp(), ir.isRead(), null,
-					ir.wasAnswered(), false);
-		}
-	}
-
 	static ConversationItem from(Context ctx, String contactName,
 			IntroductionResponse ir) {
 		if (ir.isLocal()) {
@@ -156,21 +128,22 @@ abstract class ConversationItem {
 	}
 
 	static ConversationItem from(Context ctx, String contactName,
-			InvitationRequest ir) {
+			PrivateRequest ir) {
 		if (ir.isLocal()) {
 			String text;
-			if (ir instanceof ForumInvitationRequest) {
+			if (ir instanceof IntroductionRequest) {
+				text = ctx.getString(R.string.introduction_request_sent,
+						contactName, ir.getName());
+			} else if (ir instanceof ForumInvitationRequest) {
 				text = ctx.getString(R.string.forum_invitation_sent,
-						((ForumInvitationRequest) ir).getForumName(),
-						contactName);
+						ir.getName(), contactName);
 			} else if (ir instanceof BlogInvitationRequest) {
 				text = ctx.getString(R.string.blogs_sharing_invitation_sent,
-						((BlogInvitationRequest) ir).getBlogAuthorName(),
-						contactName);
+						ir.getName(), contactName);
 			} else if (ir instanceof GroupInvitationRequest) {
 				text = ctx.getString(
 						R.string.groups_invitations_invitation_sent,
-						contactName, ir.getShareable().getName());
+						contactName, ir.getName());
 			} else {
 				throw new IllegalArgumentException("Unknown InvitationRequest");
 			}
@@ -180,20 +153,36 @@ abstract class ConversationItem {
 		} else {
 			String text;
 			RequestType type;
-			if (ir instanceof ForumInvitationRequest) {
+			if (ir instanceof IntroductionRequest) {
+				type = INTRODUCTION;
+				if (ir.wasAnswered()) {
+					text = ctx.getString(
+							R.string.introduction_request_answered_received,
+							contactName, ir.getName());
+				} else if (ir.doesExist()) {
+					text = ctx.getString(
+							R.string.introduction_request_exists_received,
+							contactName, ir.getName());
+				} else {
+					text = ctx.getString(R.string.introduction_request_received,
+							contactName, ir.getName());
+				}
+				return new ConversationRequestItem(ir.getId(),
+						ir.getGroupId(), type, ir.getSessionId(), text,
+						ir.getMessage(), ir.getTimestamp(), ir.isRead(), null,
+						ir.wasAnswered(), false);
+			} else if (ir instanceof ForumInvitationRequest) {
 				text = ctx.getString(R.string.forum_invitation_received,
-						contactName,
-						((ForumInvitationRequest) ir).getForumName());
+						contactName, ir.getName());
 				type = FORUM;
 			} else if (ir instanceof BlogInvitationRequest) {
 				text = ctx.getString(R.string.blogs_sharing_invitation_received,
-						contactName,
-						((BlogInvitationRequest) ir).getBlogAuthorName());
+						contactName, ir.getName());
 				type = BLOG;
 			} else if (ir instanceof GroupInvitationRequest) {
 				text = ctx.getString(
 						R.string.groups_invitations_invitation_received,
-						contactName, ir.getShareable().getName());
+						contactName, ir.getName());
 				type = GROUP;
 			} else {
 				throw new IllegalArgumentException("Unknown InvitationRequest");
@@ -201,8 +190,8 @@ abstract class ConversationItem {
 			return new ConversationRequestItem(ir.getId(),
 					ir.getGroupId(), type, ir.getSessionId(), text,
 					ir.getMessage(), ir.getTimestamp(), ir.isRead(),
-					ir.getShareable().getId(), !ir.isAvailable(),
-					ir.canBeOpened());
+					((Shareable) ir.getObject()).getId(), !ir.wasAnswered(),
+					ir.doesExist());
 		}
 	}
 
@@ -276,8 +265,8 @@ abstract class ConversationItem {
 			return from(ctx, "", (IntroductionRequest) h);
 		} else if(h instanceof IntroductionResponse) {
 			return from(ctx, "", (IntroductionResponse) h);
-		} else if(h instanceof InvitationRequest) {
-			return from(ctx, "", (InvitationRequest) h);
+		} else if(h instanceof PrivateRequest) {
+			return from(ctx, "", (PrivateRequest) h);
 		} else if(h instanceof InvitationResponse) {
 			return from(ctx, "", (InvitationResponse) h);
 		} else {

briar-api/src/main/java/org/briarproject/briar/api/blog/BlogInvitationRequest.java

 package org.briarproject.briar.api.blog;
 
-import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.api.client.SessionId;
-import org.briarproject.briar.api.sharing.InvitationRequest;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 
 import javax.annotation.Nullable;
 
 @NotNullByDefault
-public class BlogInvitationRequest extends InvitationRequest<Blog> {
+public class BlogInvitationRequest extends PrivateRequest<Blog> {
 
 	public BlogInvitationRequest(MessageId id, GroupId groupId, long time,
 			boolean local, boolean sent, boolean seen, boolean read,
-			SessionId sessionId, Blog blog, ContactId contactId,
+			SessionId sessionId, Blog blog,
 			@Nullable String message, boolean available, boolean canBeOpened) {
 		super(id, groupId, time, local, sent, seen, read, sessionId, blog,
 				message, available, canBeOpened);
 	}
 
-	public String getBlogAuthorName() {
-		return getShareable().getName();
-	}
-
 }

briar-api/src/main/java/org/briarproject/briar/api/blog/event/BlogInvitationRequestReceivedEvent.java

@@ -3,7 +3,7 @@ package org.briarproject.briar.api.blog.event;
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.api.blog.Blog;
-import org.briarproject.briar.api.sharing.InvitationRequest;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 import org.briarproject.briar.api.sharing.event.InvitationRequestReceivedEvent;
 
 import javax.annotation.concurrent.Immutable;
@@ -14,7 +14,7 @@ public class BlogInvitationRequestReceivedEvent extends
 		InvitationRequestReceivedEvent<Blog> {
 
 	public BlogInvitationRequestReceivedEvent(Blog blog, ContactId contactId,
-			InvitationRequest<Blog> request) {
+			PrivateRequest<Blog> request) {
 		super(blog, contactId, request);
 	}
 

briar-api/src/main/java/org/briarproject/briar/api/forum/ForumInvitationRequest.java

 package org.briarproject.briar.api.forum;
 
-import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.api.client.SessionId;
-import org.briarproject.briar.api.sharing.InvitationRequest;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
 
 @Immutable
 @NotNullByDefault
-public class ForumInvitationRequest extends InvitationRequest<Forum> {
+public class ForumInvitationRequest extends PrivateRequest<Forum> {
 
 	public ForumInvitationRequest(MessageId id, GroupId groupId, long time,
 			boolean local, boolean sent, boolean seen, boolean read,
-			SessionId sessionId, Forum forum, ContactId contactId,
+			SessionId sessionId, Forum forum,
 			@Nullable String message, boolean available, boolean canBeOpened) {
 		super(id, groupId, time, local, sent, seen, read, sessionId, forum,
 				message, available, canBeOpened);
 	}
 
-	public String getForumName() {
-		return getShareable().getName();
-	}
-
 }

briar-api/src/main/java/org/briarproject/briar/api/forum/event/ForumInvitationRequestReceivedEvent.java

@@ -3,7 +3,7 @@ package org.briarproject.briar.api.forum.event;
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.briar.api.forum.Forum;
-import org.briarproject.briar.api.sharing.InvitationRequest;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 import org.briarproject.briar.api.sharing.event.InvitationRequestReceivedEvent;
 
 import javax.annotation.concurrent.Immutable;
@@ -14,7 +14,7 @@ public class ForumInvitationRequestReceivedEvent extends
 		InvitationRequestReceivedEvent<Forum> {
 
 	public ForumInvitationRequestReceivedEvent(Forum forum, ContactId contactId,
-			InvitationRequest<Forum> request) {
+			PrivateRequest<Forum> request) {
 		super(forum, contactId, request);
 	}
 

briar-api/src/main/java/org/briarproject/briar/api/introduction/Introduction.java

+package org.briarproject.briar.api.introduction;
+
+import org.briarproject.bramble.api.identity.Author;
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.briar.api.messaging.Nameable;
+
+import javax.annotation.concurrent.Immutable;
+
+import static org.briarproject.briar.api.introduction.Role.INTRODUCER;
+
+@Immutable
+@NotNullByDefault
+public class Introduction implements Nameable {
+
+	private final Author introducedAuthor;
+	private final Role ourRole;
+
+	public Introduction(Author introducedAuthor, Role ourRole) {
+		this.introducedAuthor = introducedAuthor;
+		this.ourRole = ourRole;
+	}
+
+	@Override
+	public String getName() {
+		return introducedAuthor.getName();
+	}
+
+	public boolean isIntroducer() {
+		return ourRole == INTRODUCER;
+	}
+
+}

briar-api/src/main/java/org/briarproject/briar/api/introduction/IntroductionManager.java

@@ -7,6 +7,7 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
 import org.briarproject.briar.api.client.SessionId;
 import org.briarproject.briar.api.messaging.ConversationManager.ConversationClient;
+import org.briarproject.briar.api.messaging.PrivateMessageHeader;
 
 import java.util.Collection;
 
@@ -50,7 +51,7 @@ public interface IntroductionManager extends ConversationClient {
 	/**
 	 * Returns all introduction messages for the given contact.
 	 */
-	Collection<IntroductionMessage> getIntroductionMessages(ContactId contactId)
+	Collection<PrivateMessageHeader> getIntroductionMessages(ContactId contactId)
 			throws DbException;
 
 }

briar-api/src/main/java/org/briarproject/briar/api/introduction/IntroductionMessage.java

-package org.briarproject.briar.api.introduction;
-
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.bramble.api.sync.GroupId;
-import org.briarproject.bramble.api.sync.MessageId;
-import org.briarproject.briar.api.client.SessionId;
-import org.briarproject.briar.api.messaging.PrivateMessageHeader;
-
-import javax.annotation.concurrent.Immutable;
-
-@Immutable
-@NotNullByDefault
-public abstract class IntroductionMessage extends PrivateMessageHeader {
-
-	private final SessionId sessionId;
-
-	IntroductionMessage(SessionId sessionId, MessageId messageId,
-			GroupId groupId, long time, boolean local, boolean sent,
-			boolean seen, boolean read) {
-		super(messageId, groupId, time, local, sent, seen, read);
-		this.sessionId = sessionId;
-	}
-
-	public SessionId getSessionId() {
-		return sessionId;
-	}
-
-}

briar-api/src/main/java/org/briarproject/briar/api/introduction/IntroductionRequest.java

 package org.briarproject.briar.api.introduction;
 
-import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.api.client.SessionId;
+import org.briarproject.briar.api.messaging.PrivateRequest;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
 
 @Immutable
 @NotNullByDefault
-public class IntroductionRequest extends IntroductionMessage {
+public class IntroductionRequest extends PrivateRequest<Introduction> {
 
-	private final Author introducedAuthor;
-	@Nullable
-	private final String message;
-	private final boolean answered, exists;
-
-	public IntroductionRequest(SessionId sessionId, MessageId messageId,
-			GroupId groupId, long time, boolean local, boolean sent,
-			boolean seen, boolean read, Author introducedAuthor,
+	public IntroductionRequest(MessageId messageId, GroupId groupId,
+			long time, boolean local, boolean sent, boolean seen, boolean read,
+			SessionId sessionId, Introduction introduction,
 			@Nullable String message, boolean answered, boolean exists) {
-		super(sessionId, messageId, groupId, time, local, sent, seen, read);
-		this.introducedAuthor = introducedAuthor;
-		this.message = message;
-		this.answered = answered;
-		this.exists = exists;
-	}
-
-	public String getName() {
-		return introducedAuthor.getName();
-	}
-
-	@Nullable
-	public String getMessage() {
-		return message;
-	}
-
-	public boolean wasAnswered() {
-		return answered;
+		super(messageId, groupId, time, local, sent, seen, read, sessionId,
+				introduction, message, answered, exists);
 	}
 
-	public boolean contactExists() {
-		return exists;
-	}
 }

briar-api/src/main/java/org/briarproject/briar/api/introduction/IntroductionResponse.java

@@ -4,6 +4,7 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.api.client.SessionId;
+import org.briarproject.briar.api.messaging.PrivateMessageHeader;
 
 import javax.annotation.concurrent.Immutable;
 
@@ -11,8 +12,9 @@ import static org.briarproject.briar.api.introduction.Role.INTRODUCER;
 
 @Immutable
 @NotNullByDefault
-public class IntroductionResponse extends IntroductionMessage {
+public class IntroductionResponse extends PrivateMessageHeader {
 
+	private final SessionId sessionId;
 	private final String name;
 	private final Role role;
 	private final boolean accepted;
@@ -20,12 +22,17 @@ public class IntroductionResponse extends IntroductionMessage {
 	public IntroductionResponse(SessionId sessionId, MessageId messageId,
 			GroupId groupId, Role role, long time, boolean local, boolean sent,
 			boolean seen, boolean read, String name, boolean accepted) {
-		super(sessionId, messageId, groupId, time, local, sent, seen, read);
+		super(messageId, groupId, time, local, sent, seen, read);
+		this.sessionId = sessionId;
 		this.name = name;
 		this.role = role;
 		this.accepted = accepted;
 	}
 
+	public SessionId getSessionId() {
+		return sessionId;
+	}
+
 	public String getName() {
 		return name;
 	}

briar-api/src/main/java/org/briarproject/briar/api/messaging/Nameable.java

+package org.briarproject.briar.api.messaging;
+
+import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+
+@NotNullByDefault
+public interface Nameable {
+
+	String getName();
+
+}

briar-api/src/main/java/org/briarproject/briar/api/sharing/InvitationRequest.java → briar-api/src/main/java/org/briarproject/briar/api/messaging/PrivateRequest.java

-package org.briarproject.briar.api.sharing;
+package org.briarproject.briar.api.messaging;
 
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
@@ -10,40 +10,48 @@ import javax.annotation.concurrent.Immutable;
 
 @Immutable
 @NotNullByDefault
-public abstract class InvitationRequest<S extends Shareable>
-		extends InvitationMessage {
+public class PrivateRequest<O extends Nameable> extends PrivateMessageHeader {
 
-	private final S shareable;
+	private final SessionId sessionId;
+	private final O object;
 	@Nullable
 	private final String message;
-	private final boolean available, canBeOpened;
+	private final boolean answered, exists;
 
-	public InvitationRequest(MessageId id, GroupId groupId, long time,
+	public PrivateRequest(MessageId messageId, GroupId groupId, long time,
 			boolean local, boolean sent, boolean seen, boolean read,
-			SessionId sessionId, S shareable,
-			@Nullable String message, boolean available, boolean canBeOpened) {
-		super(id, groupId, time, local, sent, seen, read, sessionId);
-		this.shareable = shareable;