implement notifications

4 files changed, 175 insertions, 4 deletions

diff --git a/Digitigrade/Model/HomeTimelineItem.php b/Digitigrade/Model/HomeTimelineItem.php
new file mode 100644
index 0000000..7e2c062
--- /dev/null
+++ b/Digitigrade/Model/HomeTimelineItem.php
@@ -0,0 +1,53 @@
+<?php
+namespace Digitigrade\Model;
+
+use Digitigrade\Model;
+use Digitigrade\Model\UserAccount;
+use Digitigrade\Timeline\TimelineItem;
+
+class HomeTimelineItem extends Model {
+    public ?int $id;
+    public UserAccount $userAccount;
+    public ?string $reasonKind;
+    public ?string $reasonData;
+    public string $itemKind;
+    public string $itemData;
+    public \DateTimeImmutable $modified;
+
+    /**
+     * Creates a new home timeline entry for a particular user, but does not save it.
+     */
+    public static function fromTimelineItem(TimelineItem $item, UserAccount $user): self {
+        $hti = new self();
+        $hti->userAccount = $user;
+        $reason = $item->getReason();
+        if ($reason != null) {
+            $hti->reasonKind = $reason::class;
+            $hti->reasonData = json_encode($reason->toJsonReference());
+        }
+        $object = $item->getObject();
+        $hti->itemKind = $object::class;
+        $hti->itemData = json_encode($object->toJsonReference());
+        $hti->modified = new \DateTimeImmutable();
+        return $hti;
+    }
+
+    public function toTimelineItem(): TimelineItem {
+        $reason = null;
+        if (isset($this->reasonKind)) {
+            $reason = $this->reasonKind::fromJsonReference(json_decode($this->reasonData));
+        }
+        $object = $this->itemKind::fromJsonReference(json_decode($this->itemData));
+        return new TimelineItem($object, $reason);
+    }
+
+    public static function findAllForUser(UserAccount $user, ?int $limit = null, int $offset = 0, ?\DateTimeInterface $since = null) {
+        $where = 'user_account = ?';
+        $params = [$user->id];
+        if (isset($since)) {
+            $where .= ' AND modified > ?';
+            $params[] = $since->format('c');
+        }
+        return self::findAllWhere($where, $params, $limit, $offset, 'id DESC');
+    }
+}
\ No newline at end of file
diff --git a/Digitigrade/Model/Interaction.php b/Digitigrade/Model/Interaction.php
index e5619bb..cf2be01 100644
--- a/Digitigrade/Model/Interaction.php
+++ b/Digitigrade/Model/Interaction.php
@@ -1,11 +1,12 @@
 <?php
 namespace Digitigrade\Model;
 
-use Digitigrade\Timeline\HomeTimelineItem;
+use Digitigrade\Model\HomeTimelineItem;
+use Digitigrade\Notification\Notifyable;
 use Digitigrade\Timeline\ReasonReshared;
 use Digitigrade\Timeline\TimelineItem;
 
-class Interaction extends PushableModel {
+class Interaction extends PushableModel implements Notifyable {
     public ?int $id;
     public string $uri;
     public \DateTimeImmutable $created;
@@ -61,6 +62,30 @@ class Interaction extends PushableModel {
         return array_unique($instances);
     }
 
+    public function getNotificationTitle(): string {
+        return sprintf(__('notifications.interaction.' . $this->kind->value . '.title'), $this->author->displayName);
+    }
+    public function getNotificationTitleLink(): ?string {
+        return '/@/' . $this->target->author->getFullHandle() . '/note/' . $this->target->id;
+    }
+    public function getNotificationBody(): ?string {
+        return $this->target->plainContent;
+    }
+    public function getNotificationImageUrl(): ?string {
+        return $this->author->avatar;
+    }
+    public function getNotificationImageLink(): ?string {
+        return '/@/' . $this->author->getFullHandle();
+    }
+
+    public function toJsonReference(): mixed {
+        return $this->id;
+    }
+
+    public static function fromJsonReference(mixed $reference): self {
+        return self::find($reference);
+    }
+
     public function processTimelineAdditions() {
         // basically, if this is a reshare, we need to put a home timeline item
         // for all followers who can see the shared note
@@ -80,6 +105,14 @@ class Interaction extends PushableModel {
         }
     }
 
+    public function processNotifications() {
+        if (!$this->target->author->isLocal || $this->author == $this->target->author) {
+            return;
+        }
+        $recipient = UserAccount::findByLinkedActor($this->target->author);
+        Notification::fromNotifyable($this, $recipient)->send();
+    }
+
     public function jsonSerialize(): array {
         if ($this->deleted) {
             return [
diff --git a/Digitigrade/Model/Note.php b/Digitigrade/Model/Note.php
index f6f492d..cf84ee0 100644
--- a/Digitigrade/Model/Note.php
+++ b/Digitigrade/Model/Note.php
@@ -2,11 +2,12 @@
 namespace Digitigrade\Model;
 
 use Digitigrade\Db;
-use Digitigrade\Timeline\HomeTimelineItem;
+use Digitigrade\Model\HomeTimelineItem;
+use Digitigrade\Notification\Notifyable;
 use Digitigrade\Timeline\TimelineIncludeable;
 use Digitigrade\Timeline\TimelineItem;
 
-class Note extends PushableModel implements TimelineIncludeable {
+class Note extends PushableModel implements TimelineIncludeable, Notifyable {
     public ?int $id;
     public string $uri;
     public \DateTimeImmutable $created;
@@ -195,6 +196,33 @@ class Note extends PushableModel implements TimelineIncludeable {
         return self::find($reference);
     }
 
+    public function getNotificationTitle(): string {
+        // assuming that this notification is because the note is a reply for now
+        return sprintf(__('notifications.interaction.reply.title'), $this->author->displayName);
+    }
+    public function getNotificationTitleLink(): ?string {
+        return '/@/' . $this->author->getFullHandle() . '/note/' . $this->id;
+    }
+    public function getNotificationBody(): ?string {
+        return $this->plainContent;
+    }
+    public function getNotificationImageUrl(): ?string {
+        return $this->author->avatar;
+    }
+    public function getNotificationImageLink(): ?string {
+        return '/@/' . $this->author->getFullHandle();
+    }
+
+    public function processNotifications() {
+        foreach ($this->mentions as $a) {
+            if (!$a->isLocal) {
+                continue;
+            }
+            $user = UserAccount::findByLinkedActor($a);
+            Notification::fromNotifyable($this, $user)->send();
+        }
+    }
+
     public function processTimelineAdditions() {
         $item = new TimelineItem($this);
         foreach ($this->getRelevantActors() as $actor) {
diff --git a/Digitigrade/Model/Notification.php b/Digitigrade/Model/Notification.php
new file mode 100644
index 0000000..ee9d64a
--- /dev/null
+++ b/Digitigrade/Model/Notification.php
@@ -0,0 +1,57 @@
+<?php
+namespace Digitigrade\Model;
+
+use Digitigrade\Model;
+use Digitigrade\Notification\Notifyable;
+
+class Notification extends Model {
+    public ?int $id;
+    public UserAccount $userAccount;
+    public string $itemType;
+    public string $itemData;
+    public \DateTimeImmutable $created;
+
+    /**
+     * Creates a new Notification from a Notifyable object, but does not send it.
+     * @param Notifyable $item the item to send in the notification
+     * @param UserAccount $user the user to send the notification to
+     * @return Notification
+     */
+    public static function fromNotifyable(Notifyable $item, UserAccount $user): self {
+        $notif = new self();
+        $notif->userAccount = $user;
+        $notif->itemType = $item::class;
+        $notif->itemData = json_encode($item->toJsonReference());
+        $notif->created = new \DateTimeImmutable();
+
+        $notif->save();
+        return $notif;
+    }
+
+    public function toNotifyable(): Notifyable {
+        return $this->itemType::fromJsonReference(json_decode($this->itemData));
+    }
+
+    /**
+     * Saves this object and delivers the notification to the recipient user.
+     * @return void
+     */
+    public function send() {
+        $this->save();
+        // TODO: send it via any push mechanisms
+    }
+
+    /**
+     * @return self[]
+     */
+    public static function findAllForUser(UserAccount $user, ?int $limit = null, int $offset = 0, ?\DateTimeInterface $since = null) {
+        $where = 'user_account = ?';
+        $params = [$user->id];
+        if (isset($since)) {
+            $where .= ' AND created > ?';
+            $params[] = $since->format('c');
+        }
+        return self::findAllWhere($where, $params, $limit, $offset, 'id DESC');
+    }
+
+}
\ No newline at end of file