Honour photo_reblogs_only in the home timeline

app/Http/Controllers/Api/ApiV1Controller.php

@@ -2642,6 +2642,16 @@ class ApiV1Controller extends Controller
         $inTypes = $includeReblogs ?
             ['photo', 'photo:album', 'video', 'video:album', 'photo:video:album', 'share'] :
             ['photo', 'photo:album', 'video', 'video:album', 'photo:video:album'];
+
+        // "Photo reblogs only"
+        $photosReblogsOnly = $request->filled('photos_reblogs_only')
+            ? $request->boolean('photos_reblogs_only')
+            : data_get($other, 'photo_reblogs_only', false);
+        $reblogTargetTypes = array_diff($inTypes, ['share']);
+
+        // Filtering happens after the fetch, so fetch deeper to fill a page
+        $fetchLimit = $photosReblogsOnly ? $limit * 6 : $limit * 2;
+
         AccountService::setLastActive($request->user()->id);
 
         $cachedFilters = CustomFilter::getCachedFiltersForAccount($pid);
@@ -2770,7 +2780,7 @@ class ApiV1Controller extends Controller
                 ->whereIn('type', $inTypes)
                 ->whereIn('visibility', ['public', 'unlisted', 'private'])
                 ->orderByDesc('id')
-                ->take(($limit * 2))
+                ->take($fetchLimit)
                 ->get()
                 ->map(function ($s) use ($pid, $napi) {
                     try {
@@ -2796,8 +2806,15 @@ class ApiV1Controller extends Controller
 
                     return $status;
                 })
-                ->filter(function ($status) {
-                    return $status && isset($status['account']);
+                ->filter(function ($status) use ($photosReblogsOnly, $reblogTargetTypes) {
+                    if (! $status || ! isset($status['account'])) {
+                        return false;
+                    }
+
+                    // direct posts pass; a boost must share a photo or video
+                    return ! $photosReblogsOnly
+                        || empty($status['reblog'])
+                        || in_array(data_get($status['reblog'], 'pf_type'), $reblogTargetTypes);
                 })
                 ->map(function ($status) use ($pid) {
                     if (! empty($status['reblog'])) {
@@ -2841,7 +2858,7 @@ class ApiV1Controller extends Controller
                 ->whereIn('type', $inTypes)
                 ->whereIn('visibility', ['public', 'unlisted', 'private'])
                 ->orderByDesc('id')
-                ->take(($limit * 2))
+                ->take($fetchLimit)
                 ->get()
                 ->map(function ($s) use ($pid, $napi) {
                     try {
@@ -2867,8 +2884,15 @@ class ApiV1Controller extends Controller
 
                     return $status;
                 })
-                ->filter(function ($status) {
-                    return $status && isset($status['account']);
+                ->filter(function ($status) use ($photosReblogsOnly, $reblogTargetTypes) {
+                    if (! $status || ! isset($status['account'])) {
+                        return false;
+                    }
+
+                    // direct posts pass; a boost must share a photo or video
+                    return ! $photosReblogsOnly
+                        || empty($status['reblog'])
+                        || in_array(data_get($status['reblog'], 'pf_type'), $reblogTargetTypes);
                 })
                 ->map(function ($status) use ($pid) {
                     if (! empty($status['reblog'])) {