Follows and relationships (#27)

* Follows -- create and undo, both remote and local
* Statuses -- federate new posts, including media, attachments, CWs and image descriptions.

internal/message/fromfederatorprocess.go

@@ -38,24 +38,60 @@ func (p *processor) processFromFederator(federatorMsg gtsmodel.FromFederator) er
 
 	l.Debug("entering function PROCESS FROM FEDERATOR")
 
-	switch federatorMsg.APObjectType {
-	case gtsmodel.ActivityStreamsNote:
+	switch federatorMsg.APActivityType {
+	case gtsmodel.ActivityStreamsCreate:
+		// CREATE
+		switch federatorMsg.APObjectType {
+		case gtsmodel.ActivityStreamsNote:
+			// CREATE A STATUS
+			incomingStatus, ok := federatorMsg.GTSModel.(*gtsmodel.Status)
+			if !ok {
+				return errors.New("note was not parseable as *gtsmodel.Status")
+			}
 
-		incomingStatus, ok := federatorMsg.GTSModel.(*gtsmodel.Status)
-		if !ok {
-			return errors.New("note was not parseable as *gtsmodel.Status")
-		}
+			l.Debug("will now derefence incoming status")
+			if err := p.dereferenceStatusFields(incomingStatus); err != nil {
+				return fmt.Errorf("error dereferencing status from federator: %s", err)
+			}
+			if err := p.db.UpdateByID(incomingStatus.ID, incomingStatus); err != nil {
+				return fmt.Errorf("error updating dereferenced status in the db: %s", err)
+			}
 
-		l.Debug("will now derefence incoming status")
-		if err := p.dereferenceStatusFields(incomingStatus); err != nil {
-			return fmt.Errorf("error dereferencing status from federator: %s", err)
-		}
-		if err := p.db.UpdateByID(incomingStatus.ID, incomingStatus); err != nil {
-			return fmt.Errorf("error updating dereferenced status in the db: %s", err)
-		}
+			if err := p.notifyStatus(incomingStatus); err != nil {
+				return err
+			}
+		case gtsmodel.ActivityStreamsProfile:
+			// CREATE AN ACCOUNT
+			incomingAccount, ok := federatorMsg.GTSModel.(*gtsmodel.Account)
+			if !ok {
+				return errors.New("profile was not parseable as *gtsmodel.Account")
+			}
 
-		if err := p.notifyStatus(incomingStatus); err != nil {
-			return err
+			l.Debug("will now derefence incoming account")
+			if err := p.dereferenceAccountFields(incomingAccount, ""); err != nil {
+				return fmt.Errorf("error dereferencing account from federator: %s", err)
+			}
+			if err := p.db.UpdateByID(incomingAccount.ID, incomingAccount); err != nil {
+				return fmt.Errorf("error updating dereferenced account in the db: %s", err)
+			}
+		}
+	case gtsmodel.ActivityStreamsUpdate:
+		// UPDATE
+		switch federatorMsg.APObjectType {
+		case gtsmodel.ActivityStreamsProfile:
+			// UPDATE AN ACCOUNT
+			incomingAccount, ok := federatorMsg.GTSModel.(*gtsmodel.Account)
+			if !ok {
+				return errors.New("profile was not parseable as *gtsmodel.Account")
+			}
+
+			l.Debug("will now derefence incoming account")
+			if err := p.dereferenceAccountFields(incomingAccount, ""); err != nil {
+				return fmt.Errorf("error dereferencing account from federator: %s", err)
+			}
+			if err := p.db.UpdateByID(incomingAccount.ID, incomingAccount); err != nil {
+				return fmt.Errorf("error updating dereferenced account in the db: %s", err)
+			}
 		}
 	}
 
@@ -121,7 +157,7 @@ func (p *processor) dereferenceStatusFields(status *gtsmodel.Status) error {
 
 		// it might have been processed elsewhere so check first if it's already in the database or not
 		maybeAttachment := &gtsmodel.MediaAttachment{}
-		err := p.db.GetWhere("remote_url", a.RemoteURL, maybeAttachment)
+		err := p.db.GetWhere([]db.Where{{Key: "remote_url", Value: a.RemoteURL}}, maybeAttachment)
 		if err == nil {
 			// we already have it in the db, dereferenced, no need to do it again
 			l.Debugf("attachment already exists with id %s", maybeAttachment.ID)
@@ -170,7 +206,7 @@ func (p *processor) dereferenceStatusFields(status *gtsmodel.Status) error {
 		m.OriginAccountURI = status.GTSAccount.URI
 
 		targetAccount := &gtsmodel.Account{}
-		if err := p.db.GetWhere("uri", uri.String(), targetAccount); err != nil {
+		if err := p.db.GetWhere([]db.Where{{Key: "uri", Value: uri.String()}}, targetAccount); err != nil {
 			// proper error
 			if _, ok := err.(db.ErrNoEntries); !ok {
 				return fmt.Errorf("db error checking for account with uri %s", uri.String())
@@ -206,3 +242,27 @@ func (p *processor) dereferenceStatusFields(status *gtsmodel.Status) error {
 
 	return nil
 }
+
+func (p *processor) dereferenceAccountFields(account *gtsmodel.Account, requestingUsername string) error {
+	l := p.log.WithFields(logrus.Fields{
+		"func":               "dereferenceAccountFields",
+		"requestingUsername": requestingUsername,
+	})
+
+	t, err := p.federator.GetTransportForUser(requestingUsername)
+	if err != nil {
+		return fmt.Errorf("error getting transport for user: %s", err)
+	}
+
+	// fetch the header and avatar
+	if err := p.fetchHeaderAndAviForAccount(account, t); err != nil {
+		// if this doesn't work, just skip it -- we can do it later
+		l.Debugf("error fetching header/avi for account: %s", err)
+	}
+
+	if err := p.db.UpdateByID(account.ID, account); err != nil {
+		return fmt.Errorf("error updating account in database: %s", err)
+	}
+
+	return nil
+}