make the interaction buttons actually work

5 files changed, 51 insertions, 3 deletions

diff --git a/Digitigrade/Model/Instance.php b/Digitigrade/Model/Instance.php
index 4242638..b3a179f 100644
--- a/Digitigrade/Model/Instance.php
+++ b/Digitigrade/Model/Instance.php
@@ -1,6 +1,7 @@
 <?php
 namespace Digitigrade\Model;
 
+use Digitigrade\GlobalConfig;
 use Digitigrade\Job\RefreshOutboundAuthToken;
 
 class Instance extends FetchableModel {
@@ -26,6 +27,10 @@ class Instance extends FetchableModel {
     }
 
     public static function findByHostname(string $host, bool $autoSave = true, bool $forceRefetch = false): ?self {
+        if ($host == GlobalConfig::getInstance()->getCanonicalHost()) {
+            // refuse to fetch ourselves
+            return null;
+        }
         return self::findByUri("https://$host/.well-known/pawpub-instance", $autoSave, $forceRefetch);
     }
 
diff --git a/Digitigrade/Model/Note.php b/Digitigrade/Model/Note.php
index 7389617..6d83a90 100644
--- a/Digitigrade/Model/Note.php
+++ b/Digitigrade/Model/Note.php
@@ -115,6 +115,10 @@ class Note extends PushableModel implements TimelineIncludeable {
         return Interaction::findAllWithTarget($this);
     }
 
+    public function getInteractionsWithAuthor(Actor $author): array {
+        return Interaction::findAllWhere('author = ? AND target = ? AND deleted = false', [$author->id, $this->id]);
+    }
+
     protected function getRelevantServers(): array {
         $recipientActors = match ($this->privacy->scope) {
             NotePrivacyScope::NONE => [],
diff --git a/Digitigrade/Model/PushableModel.php b/Digitigrade/Model/PushableModel.php
index 9de3507..4df90c8 100644
--- a/Digitigrade/Model/PushableModel.php
+++ b/Digitigrade/Model/PushableModel.php
@@ -40,6 +40,8 @@ abstract class PushableModel extends FetchableModel implements \JsonSerializable
      */
     public function publish() {
         foreach ($this->getRelevantServers() as $instance) {
+            if ($instance == null) // really this should not happen but i'm lazy so it might
+                continue;
             (new PushObject($this, $instance))->submit();
         }
     }
diff --git a/routes/note_fragment.php b/routes/note_fragment.php
index 3cb1fcc..9170e2b 100644
--- a/routes/note_fragment.php
+++ b/routes/note_fragment.php
@@ -1,13 +1,35 @@
 <?php
 
+use Digitigrade\HttpResponseStatus\BadRequest;
+use Digitigrade\Model\Interaction;
+use Digitigrade\Model\InteractionKind;
 use Digitigrade\Model\Note;
 use Digitigrade\Model\UserAccount;
 use Digitigrade\Router;
 
 Router::getInstance()->mount('/fragment/note/:id/:action', function (array $args) {
+    $user = UserAccount::requireByCurrentSession();
+    $action = $args['action'];
+    if (!(in_array($action, ['like', 'dislike', 'reshare']))) {
+        throw new BadRequest("invalid action $action");
+    }
     $note = Note::find($args['id']);
-    // TODO: actually like/dislike/reshare the note as the currently signed in user
-    render_template('interaction_button', ['action' => $args['action'], 'active' => true, 'note' => $note]);
+    $interaction = Interaction::findWhere('author = ? AND target = ? AND kind = ? AND deleted = false', [
+        $user->actor->id, $note->id, $action
+    ]);
+
+    if ($interaction == null) {
+        // we are adding a new interaction
+        $newint = Interaction::create($user->actor, InteractionKind::from($action), $note);
+        $newint->publish();
+        $active = true;
+    } else {
+        // we are removing the existing one
+        $interaction->markDeleted();
+        $active = false;
+    }
+
+    render_template('interaction_button', ['action' => $args['action'], 'active' => $active, 'note' => $note]);
 });
 
 Router::getInstance()->mount('/fragment/note', function (array $args) {
diff --git a/templates/note.php b/templates/note.php
index 83770aa..fdc0dc8 100644
--- a/templates/note.php
+++ b/templates/note.php
@@ -1,3 +1,14 @@
+<?php
+use Digitigrade\Model\InteractionKind;
+use Digitigrade\Model\UserAccount;
+
+$user = UserAccount::findByCurrentSession();
+$interKinds = [];
+if ($user != null) {
+    $interactions = $note->getInteractionsWithAuthor($user->actor);
+    $interKinds = array_map(fn($inter) => $inter->kind, $interactions);
+}
+?>
 <article class="note">
     <a href="/@/<?= $note->author->getFullHandle() ?>">
         <?php call_template('actor_avatar', ['actor' => $note->author]); ?>
@@ -21,7 +32,11 @@
         </div>
         <div class="buttons">
             <?php foreach (['like', 'dislike', 'reshare'] as $action) {
-                render_template('interaction_button', ['action' => $action, 'note' => $note]);
+                render_template('interaction_button', [
+                    'action' => $action,
+                    'note' => $note,
+                    'active' => in_array(InteractionKind::from($action), $interKinds)
+                ]);
             } ?>
         </div>
     </div>