Refactor stats, add derived catalog stores, improve timer

src/lib/catalog/index.ts

@@ -1,4 +1,30 @@
-import { db } from '$lib/catalog/db';
+import { page } from '$app/stores';
+import { db, type Catalog } from '$lib/catalog/db';
+import type { Volume } from '$lib/types';
 import { liveQuery } from 'dexie';
+import { derived, type Readable } from 'svelte/store';
 
 export const catalog = liveQuery(() => db.catalog.toArray());
+
+function sortManga(a: Volume, b: Volume) {
+  if (a.volumeName < b.volumeName) {
+    return -1;
+  }
+  if (a.volumeName > b.volumeName) {
+    return 1;
+  }
+  return 0;
+}
+
+
+export const manga = derived([page, catalog as unknown as Readable<Catalog[]>], ([$page, $catalog]) => {
+  if ($page && $catalog) {
+    return $catalog.find((item) => item.id === $page.params.manga)?.manga.sort(sortManga)
+  }
+});
+
+export const volume = derived(([page, manga]), ([$page, $manga]) => {
+  if ($page && $manga) {
+    return $manga.find((item) => item.mokuroData.volume_uuid === $page.params.volume)
+  }
+})