From 68cb21fc23b2b13a0645233755e69cc9fde3c2d1 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 26 Dec 2025 01:34:25 -0500
Subject: [PATCH] Relax map bounds filter and add radius fallback

---
 src/components/Map/usePostsEngine.js | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/components/Map/usePostsEngine.js b/src/components/Map/usePostsEngine.js
index e8de524..fd4208e 100644
--- a/src/components/Map/usePostsEngine.js
+++ b/src/components/Map/usePostsEngine.js
@@ -90,8 +90,8 @@ function filterByBounds(posts, map) {
   const ne = bounds.getNorthEast();
   if (!sw || !ne) return posts;
 
-  const padLat = Math.abs(ne.lat - sw.lat) * 0.12;
-  const padLon = Math.abs(ne.lng - sw.lng) * 0.12;
+  const padLat = Math.abs(ne.lat - sw.lat) * 0.35;
+  const padLon = Math.abs(ne.lng - sw.lng) * 0.35;
   const minLat = sw.lat - padLat;
   const maxLat = ne.lat + padLat;
   const minLon = sw.lng - padLon;
@@ -105,6 +105,20 @@ function filterByBounds(posts, map) {
   });
 }
 
+function filterByRadius(posts, center, radiusKm) {
+  if (!Array.isArray(posts) || posts.length === 0) return posts || [];
+  const [centerLon, centerLat] = center || [];
+  if (!Number.isFinite(centerLat) || !Number.isFinite(centerLon)) return posts || [];
+  const limit = Math.max(radiusKm || 0, 1);
+  return posts.filter((p) => {
+    const coords = getCoords(p);
+    if (!coords) return false;
+    const [lon, lat] = coords;
+    const dKm = haversineKm(centerLat, centerLon, lat, lon);
+    return dKm <= limit;
+  });
+}
+
 function getPostTimeMs(p) {
   const raw = p?.created_at || p?.CreatedAt || p?.createdAt || p?.published_at;
   if (!raw) return 0;
@@ -519,7 +533,10 @@ export function usePostsEngine({
     (tf) => {
       const vAll = computeVisible(tf);
       const map = mapRef.current;
-      const vBounded = filterByBounds(vAll, map);
+      let vBounded = filterByBounds(vAll, map);
+      if (vBounded.length === 0 && viewParams?.center && viewParams?.radiusKm) {
+        vBounded = filterByRadius(vAll, viewParams.center, viewParams.radiusKm * 1.2);
+      }
       let v = vBounded;
       if (v.length > MAX_VISIBLE_POSTS) {
         const center = map?.getCenter?.();
@@ -552,7 +569,7 @@ export function usePostsEngine({
 
       syncMarkers(v);
     },
-    [computeVisible, syncMarkers, mapRef, ensureClusterLayers, updateClusterData, setClusterVisibility, splitForClusters, syncPriorityMarkers]
+    [computeVisible, syncMarkers, mapRef, ensureClusterLayers, updateClusterData, setClusterVisibility, splitForClusters, syncPriorityMarkers, viewParams]
   );
 
   // On filter/search changes: recompute + sync (NO clear-all rebuild)