Redirects from the intermediate page work and if there's an old mention

there it updates the table to include the handle.

migrations WIP

collections.go

@@ -824,13 +824,14 @@ func handleViewMention(app *App, w http.ResponseWriter, r *http.Request) error {
 	vars := mux.Vars(r)
 	handle := vars["handle"]
 
-	remoteUser, err := getRemoteUserFromHandle(app, handle)
+	remoteUser, err := app.db.getProfilePageFromHandle(app, handle)
 	if err != nil {
-		log.Error("Couldn't find this user in our database "+handle, err)
-		return err
+		log.Error("Couldn't find this user "+handle, err)
+		return nil
 	}
 
-	w.Write([]byte("go to " + remoteUser.ActorID))
+	http.Redirect(w, r, remoteUser, http.StatusSeeOther)
+	w.Write([]byte("go to " + remoteUser))
 
 	return nil
 }

database.go

@@ -20,6 +20,7 @@ import (
 	"github.com/guregu/null"
 	"github.com/guregu/null/zero"
 	uuid "github.com/nu7hatch/gouuid"
+	"github.com/writeas/activityserve"
 	"github.com/writeas/impart"
 	"github.com/writeas/nerds/store"
 	"github.com/writeas/web-core/activitypub"
@@ -2449,3 +2450,38 @@ func handleFailedPostInsert(err error) error {
 	log.Error("Couldn't insert into posts: %v", err)
 	return err
 }
+
+func (db *datastore) getProfilePageFromHandle(app *App, handle string) (actorIRI string, err error) {
+	remoteuser, errRemoteUser := getRemoteUserFromHandle(app, handle)
+	if errRemoteUser != nil {
+		// can't find using handle in the table but the table may already have this user without
+		// handle from a previous version
+		actorIRI = RemoteLookup(handle)
+		_, errRemoteUser := getRemoteUser(app, actorIRI)
+		// if it exists then we need to update the handle
+		if errRemoteUser == nil {
+			// query := "UPDATE remoteusers SET handle='" + handle + "' WHERE actor_id='" + iri + "';"
+			// log.Info(query)
+			_, err := app.db.Exec("UPDATE remoteusers SET handle=? WHERE actor_id=?;", handle, actorIRI)
+			if err != nil {
+				log.Error("Can't update handle (" + handle + ") in database for user " + actorIRI)
+			}
+		} else {
+			// this probably means we don't have the user in the table so let's try to insert it
+			// here we need to ask the server for the inboxes
+			remoteActor, err := activityserve.NewRemoteActor(actorIRI)
+			if err != nil {
+				log.Error("Couldn't fetch remote actor", err)
+			}
+			fmt.Println(actorIRI, remoteActor.GetInbox(), remoteActor.GetSharedInbox(), handle)
+			_, err = app.db.Exec("INSERT INTO remoteusers (actor_id, inbox, shared_inbox, handle) VALUES( ?, ?, ?, ?)", actorIRI, remoteActor.GetInbox(), remoteActor.GetSharedInbox(), handle)
+			if err != nil {
+				log.Error("Can't insert remote user in database", err)
+				return "", err
+			}
+		}
+	} else {
+		actorIRI = remoteuser.ActorID
+	}
+	return actorIRI, nil
+}

migrations/migrations.go

@@ -57,6 +57,7 @@ func (m *migration) Migrate(db *datastore) error {
 var migrations = []Migration{
 	New("support user invites", supportUserInvites),             // -> V1 (v0.8.0)
 	New("support dynamic instance pages", supportInstancePages), // V1 -> V2 (v0.9.0)
+	New("support activityPub mentions", supportActivityPubMentions), // V2 -> V3 (v0.1x.0)
 }
 
 // CurrentVer returns the current migration version the application is on

migrations/v3.go

@@ -0,0 +1,23 @@
+/*
+ * Copyright © 2019 A Bunch Tell LLC.
+ *
+ * This file is part of WriteFreely.
+ *
+ * WriteFreely is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, included
+ * in the LICENSE file in this source code package.
+ */
+
+package migrations
+
+func supportActivityPubMentions(db *datastore) error {
+	t, err := db.Begin()
+
+	_, err = t.Exec(`ALTER TABLE remoteusers ADD COLUMN handle ` + db.typeVarChar(255) + ` DEFAULT '' NOT NULL`)
+	if err != nil {
+		t.Rollback()
+		return err
+	}
+
+	return nil
+}

posts.go

@@ -25,7 +25,6 @@ import (
 	"github.com/guregu/null/zero"
 	"github.com/kylemcc/twitter-text-go/extract"
 	"github.com/microcosm-cc/bluemonday"
-	"github.com/writeas/activityserve"
 	stripmd "github.com/writeas/go-strip-markdown"
 	"github.com/writeas/impart"
 	"github.com/writeas/monday"
@@ -1118,37 +1117,10 @@ func (p *PublicPost) ActivityObject(app *App) *activitystreams.Object {
 	mentions := mentionRegex.FindAllString(content, -1)
 
 	for _, handle := range mentions {
-		var actorIRI string
-		remoteuser, errRemoteUser := getRemoteUserFromHandle(app, handle)
-		if errRemoteUser != nil {
-			// can't find using handle in the table but the table may already have this user without
-			// handle from a previous version
-			actorIRI = RemoteLookup(handle)
-			_, errRemoteUser := getRemoteUser(app, actorIRI)
-			// if it exists then we need to update the handle
-			if errRemoteUser == nil {
-				// query := "UPDATE remoteusers SET handle='" + handle + "' WHERE actor_id='" + iri + "';"
-				// log.Info(query)
-				_, err := app.db.Exec("UPDATE remoteusers SET handle=? WHERE actor_id=?;", handle, actorIRI)
-				if err != nil {
-					log.Error("Can't update handle (" + handle + ") in database for user " + actorIRI)
-				}
-			} else {
-				// this probably means we don't have the user in the table so let's try to insert it
-				// here we need to ask the server for the inboxes
-				remoteActor, err := activityserve.NewRemoteActor(actorIRI)
-				if err != nil {
-					log.Error("Couldn't fetch remote actor", err)
-				}
-				fmt.Println(actorIRI, remoteActor.GetInbox(), remoteActor.GetSharedInbox(), handle)
-				_, err = app.db.Exec("INSERT INTO remoteusers (actor_id, inbox, shared_inbox, handle) VALUES( ?, ?, ?, ?)", actorIRI, remoteActor.GetInbox(), remoteActor.GetSharedInbox(), handle)
-				if err != nil {
-					log.Error("Can't insert remote user in database", err)
-					return nil
-				}
-			}
-		} else {
-			actorIRI = remoteuser.ActorID
+		actorIRI, err := app.db.getProfilePageFromHandle(app, handle)
+		if err != nil {
+			log.Info("Can't find this user either in the database nor in the remote instance")
+			return nil
 		}
 		mentionedUsers[handle] = actorIRI
 	}

schema.sql

@@ -181,6 +181,7 @@ CREATE TABLE IF NOT EXISTS `remoteusers` (
   `actor_id` varchar(255) NOT NULL,
   `inbox` varchar(255) NOT NULL,
   `shared_inbox` varchar(255) NOT NULL,
+  `handle` varchar(255) DEFAULT '' NOT NULL,
   PRIMARY KEY (`id`),
   UNIQUE KEY `collection_id` (`actor_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1;

sqlite.sql

@@ -172,6 +172,7 @@ CREATE TABLE IF NOT EXISTS `remoteusers` (
   actor_id TEXT NOT NULL,
   inbox TEXT NOT NULL,
   shared_inbox TEXT NOT NULL,
+  handle TEXT DEFAULT '' NOT NULL,
   CONSTRAINT collection_id UNIQUE (actor_id)
 );