Temporary workaround to only show related statuses

Fixes #3. Proper fix will come when pleroma#111 is closed.

app/javascript/mastodon/actions/statuses.js

@@ -167,6 +167,33 @@ export function fetchContext(id) {
     dispatch(fetchContextRequest(id));
 
     api(getState).get(`/api/v1/statuses/${id}/context`).then(response => {
+      // PLEROMA TEMP FIX
+      // If we already have the status, we can do some preprocessing on descendants & ancestors.
+      const status = getState().getIn(['statuses', id], null);
+      if (status) {
+        console.log("we have the status already - we can do preproc on ancestors");
+        // Filter posts so that they're in our same branch
+        let nextID = status.get("in_reply_to_id");
+        console.log(status, response.data.ancestors);
+        response.data.ancestors = response.data.ancestors.reverse().filter(s => {
+          if (s.in_reply_to_id == null || s.id == nextID) {
+            nextID = s.in_reply_to_id;
+            return true;
+          }
+          return false;
+        }).reverse();
+      }
+
+      const allowedIDs = {};
+      allowedIDs[id] = true;
+      response.data.descendants = response.data.descendants.filter(s => {
+        if (s.in_reply_to_id in allowedIDs) {
+          allowedIDs[s.id] = true;
+          return true;
+        }
+        return false;
+      });
+
       dispatch(importFetchedStatuses(response.data.ancestors.concat(response.data.descendants)));
       dispatch(fetchContextSuccess(id, response.data.ancestors, response.data.descendants));