add previews for stickers

Author: kaizoplant

src/base.rs

@@ -831,10 +831,10 @@ pub enum EventLocation {
 
 impl EventLocation {
     fn to_message_key(&self) -> Option<&MessageKey> {
-        if let EventLocation::Message(_, key) = self {
-            Some(key)
-        } else {
-            None
+        match self {
+            EventLocation::Message(_, key) => Some(key),
+            EventLocation::Sticker(key) => Some(key),
+            _ => None,
         }
     }
 }
@@ -1074,18 +1074,41 @@ impl RoomInfo {
     }
 
     /// Insert a sticker
-    pub fn insert_sticker(&mut self, sticker: StickerEvent) {
+    pub fn insert_sticker(
+        &mut self,
+        room_id: OwnedRoomId,
+        store: AsyncProgramStore,
+        picker: Option<Picker>,
+        sticker: StickerEvent,
+        settings: &mut ApplicationSettings,
+        media: matrix_sdk::Media,
+    ) {
         match sticker {
             MessageLikeEvent::Original(ref sticker_content) => {
-                //TODO
                 let key =
                     (sticker_content.origin_server_ts.into(), sticker_content.event_id.clone());
 
                 let loc = EventLocation::Sticker(key.clone());
 
                 self.keys.insert(sticker_content.event_id.clone(), loc);
-
-                self.messages.insert_message(key, sticker);
+                self.messages.insert_message(key.clone(), sticker.clone());
+
+                if picker.is_some() {
+                    if let (Some(msg), Some(image_preview)) = (
+                        self.get_event_mut(&sticker_content.event_id),
+                        &settings.tunables.image_preview,
+                    ) {
+                        msg.image_preview = ImageStatus::Downloading(image_preview.size.clone());
+                        spawn_insert_preview(
+                            store,
+                            room_id,
+                            sticker_content.event_id.clone(),
+                            sticker_content.content.source.clone().into(),
+                            media,
+                            settings.dirs.image_previews.clone(),
+                        )
+                    }
+                }
             },
             MessageLikeEvent::Redacted(_) => {
                 return;

src/worker.rs

@@ -359,7 +359,14 @@ fn load_insert(
                         info.insert_reaction(ev);
                     },
                     AnyTimelineEvent::MessageLike(AnyMessageLikeEvent::Sticker(ev)) => {
-                        info.insert_sticker(ev);
+                        info.insert_sticker(
+                            room_id.clone(),
+                            store.clone(),
+                            picker.clone(),
+                            ev,
+                            settings,
+                            client.media(),
+                        );
                     },
                     AnyTimelineEvent::MessageLike(_) => {
                         continue;