MM-52600: [Shared Channels] Shared channels do not sync channel membership (#30976)

server/channels/store/store.go

@@ -232,7 +232,7 @@ type ChannelStore interface {
 	// It replaces existing fields and creates new ones which don't exist.
 	UpdateMemberNotifyProps(channelID, userID string, props map[string]string) (*model.ChannelMember, error)
 	PatchMultipleMembersNotifyProps(members []*model.ChannelMemberIdentifier, notifyProps map[string]string) ([]*model.ChannelMember, error)
-	GetMembers(channelID string, offset, limit int) (model.ChannelMembers, error)
+	GetMembers(opts model.ChannelMembersGetOptions) (model.ChannelMembers, error)
 	GetMember(ctx context.Context, channelID string, userID string) (*model.ChannelMember, error)
 	GetMemberLastViewedAt(ctx context.Context, channelID string, userID string) (int64, error)
 	GetChannelMembersTimezones(channelID string) ([]model.StringMap, error)
@@ -1014,6 +1014,7 @@ type SharedChannelStore interface {
 	GetRemoteByIds(channelID string, remoteID string) (*model.SharedChannelRemote, error)
 	GetRemotes(offset, limit int, opts model.SharedChannelRemoteFilterOpts) ([]*model.SharedChannelRemote, error)
 	UpdateRemoteCursor(id string, cursor model.GetPostsSinceForSyncCursor) error
+	UpdateRemoteMembershipCursor(id string, syncTime int64) error
 	DeleteRemote(remoteID string) (bool, error)
 	GetRemotesStatus(channelID string) ([]*model.SharedChannelRemoteStatus, error)
 
@@ -1021,7 +1022,9 @@ type SharedChannelStore interface {
 	GetSingleUser(userID string, channelID string, remoteID string) (*model.SharedChannelUser, error)
 	GetUsersForUser(userID string) ([]*model.SharedChannelUser, error)
 	GetUsersForSync(filter model.GetUsersForSyncFilter) ([]*model.User, error)
+	GetUserChanges(userID string, channelID string, afterTime int64) ([]*model.SharedChannelUser, error)
 	UpdateUserLastSyncAt(userID string, channelID string, remoteID string) error
+	UpdateUserLastMembershipSyncAt(userID string, channelID string, remoteID string, syncTime int64) error
 
 	SaveAttachment(remote *model.SharedChannelAttachment) (*model.SharedChannelAttachment, error)
 	UpsertAttachment(remote *model.SharedChannelAttachment) (string, error)