fix(library): sync React photos state after scan and support case-insensitive existing photo lookup

docker/frontend/src/engine/library.ts

@@ -724,7 +724,12 @@ export async function scanFolder(
   jump?: () => string | null,
   from = ''
 ): Promise<ScanProgress> {
-  const known = new Map((await listPhotos(folder.name)).map((p) => [p.id, p]));
+  const rawKnown = await listPhotos(folder.name);
+  const known = new Map<string, LibraryPhoto>();
+  for (const p of rawKnown) {
+    known.set(p.id, p);
+    known.set(p.id.toLowerCase(), p);
+  }
   // A reading kept to one folder keeps no position of its own. The position file
   // belongs to the reading that walks the whole roll, and a fraction of the tree
   // written into it would hand the next visit a roll with the rest of itself
@@ -808,9 +813,17 @@ export async function scanFolder(
       counts[key.toLowerCase()] = counts[key];
     }
   };
-  for (const id of known.keys()) count(id.startsWith(`${normRoot}/`) ? id.slice(normRoot.length + 1) : id);
+  const relOfId = (id: string) => {
+    const normId = normPath(id);
+    const prefix = `${normRoot}/`.toLowerCase();
+    if (normId.toLowerCase().startsWith(prefix)) {
+      return normId.slice(normRoot.length + 1);
+    }
+    return normId;
+  };
+  for (const id of known.keys()) count(relOfId(id));
   const knownPaths = new Set(
-    [...known.keys()].map((id) => (id.startsWith(`${normRoot}/`) ? id.slice(normRoot.length + 1) : id))
+    [...known.keys()].map((id) => relOfId(id))
   );
   const countedDiscovered = new Set<string>();
   const countDiscovered = (rel: string) => {
@@ -825,8 +838,9 @@ export async function scanFolder(
   // been read once before is a reading of a hundred thousand frames even while
   // the walk is still up in its first folders, and one kept to a subfolder is
   // measured against the frames under that one alone.
+  const heldPrefix = `${folder.name}/${from}`.toLowerCase();
   const held = bounded
-    ? [...known.keys()].filter((id) => id.startsWith(`${folder.name}/${from}`)).length
+    ? [...known.keys()].filter((id) => id.toLowerCase().startsWith(heldPrefix)).length
     : known.size;
   // What the screen is told, and how often. The column is redrawn out of the
   // count and the count moves with every frame, so telling the screen a frame at