+ private GroupInfo handleSignalServiceDataMessage(SignalServiceDataMessage message, boolean isSync, String source, String destination) {
+ GroupInfo group = null;
+ if (message.getGroupInfo().isPresent()) {
+ SignalServiceGroup groupInfo = message.getGroupInfo().get();
+ switch (groupInfo.getType()) {
+ case UPDATE:
+ try {
+ group = groupStore.getGroup(groupInfo.getGroupId());
+ } catch (GroupNotFoundException e) {
+ group = new GroupInfo(groupInfo.getGroupId());
+ }
+
+ if (groupInfo.getAvatar().isPresent()) {
+ SignalServiceAttachment avatar = groupInfo.getAvatar().get();
+ if (avatar.isPointer()) {
+ long avatarId = avatar.asPointer().getId();
+ try {
+ retrieveAttachment(avatar.asPointer());
+ group.avatarId = avatarId;
+ } catch (IOException | InvalidMessageException e) {
+ System.err.println("Failed to retrieve group avatar (" + avatarId + "): " + e.getMessage());
+ }
+ }
+ }
+
+ if (groupInfo.getName().isPresent()) {
+ group.name = groupInfo.getName().get();
+ }
+
+ if (groupInfo.getMembers().isPresent()) {
+ group.members.addAll(groupInfo.getMembers().get());
+ }
+
+ groupStore.updateGroup(group);
+ break;
+ case DELIVER:
+ try {
+ group = groupStore.getGroup(groupInfo.getGroupId());
+ } catch (GroupNotFoundException e) {
+ }
+ break;
+ case QUIT:
+ try {
+ group = groupStore.getGroup(groupInfo.getGroupId());
+ group.members.remove(source);
+ } catch (GroupNotFoundException e) {
+ }
+ break;
+ }
+ }
+ if (message.isEndSession()) {
+ handleEndSession(isSync ? destination : source);
+ }
+ if (message.getAttachments().isPresent()) {
+ for (SignalServiceAttachment attachment : message.getAttachments().get()) {
+ if (attachment.isPointer()) {
+ try {
+ retrieveAttachment(attachment.asPointer());
+ } catch (IOException | InvalidMessageException e) {
+ System.err.println("Failed to retrieve attachment (" + attachment.asPointer().getId() + "): " + e.getMessage());
+ }
+ }
+ }
+ }
+ return group;
+ }
+