perf: speed up catalog audit by batching file checks and parallelizing source fetches

src/lib/services/catalog-audit.ts

@@ -1,5 +1,4 @@
-import { existsSync } from "node:fs";
+import { readdir } from "node:fs/promises";
-import path from "node:path";
 import { sql } from "drizzle-orm";
 import { db } from "@/lib/db";
 import { fetchSourceFurnidata } from "@/lib/services/clone-import";
@@ -141,6 +140,13 @@ export async function runCatalogAudit(
 		return;
 	}
 
+	const [iconFiles, nitroFiles] = await Promise.all([
+		readdir(iconDir).catch(() => [] as string[]),
+		readdir(nitroDir).catch(() => [] as string[]),
+	]);
+	const iconSet = new Set(iconFiles);
+	const nitroSet = new Set(nitroFiles);
+
 	onEvent?.({ type: "progress", message: "Loading items_base…" });
 
 	let items: Array<{
@@ -236,7 +242,7 @@ export async function runCatalogAudit(
 			});
 			// Only include items that actually have a .nitro asset — a catalog
 			// entry for a furni without a bundle would be un-placeable in-game.
-			if (existsSync(path.join(nitroDir, `${item.item_name}.nitro`))) {
+			if (nitroSet.has(`${item.item_name}.nitro`)) {
 				missingCatalogEntries.push({
 					classname: item.item_name,
 					itemId: item.id,
@@ -305,8 +311,7 @@ export async function runCatalogAudit(
 	const missingNitroClassnames: string[] = [];
 	for (let i = 0; i < items.length; i++) {
 		const item = items[i];
-		const nitroPath = path.join(nitroDir, `${item.item_name}.nitro`);
+		if (!nitroSet.has(`${item.item_name}.nitro`)) {
-		if (!existsSync(nitroPath)) {
 			missingNitroClassnames.push(item.item_name);
 			issues.push({
 				type: "missing_nitro",
@@ -331,8 +336,7 @@ export async function runCatalogAudit(
 	const missingIconClassnames: string[] = [];
 	for (let i = 0; i < items.length; i++) {
 		const item = items[i];
-		const iconPath = path.join(iconDir, `${item.item_name}_icon.png`);
+		if (!iconSet.has(`${item.item_name}_icon.png`)) {
-		if (!existsSync(iconPath)) {
 			missingIconClassnames.push(item.item_name);
 			issues.push({
 				type: "missing_icon",
@@ -383,7 +387,7 @@ export async function runCatalogAudit(
 			// and drop the ones the repair fixed from the issue list.
 			const stillMissing: string[] = [];
 			for (const classname of missingIconClassnames) {
-				if (!existsSync(path.join(iconDir, `${classname}_icon.png`))) {
+				if (!iconSet.has(`${classname}_icon.png`)) {
 					stillMissing.push(classname);
 				}
 			}
@@ -438,7 +442,7 @@ export async function runCatalogAudit(
 			// and drop the ones the repair fixed from the issue list.
 			const stillMissing: string[] = [];
 			for (const classname of missingNitroClassnames) {
-				if (!existsSync(path.join(nitroDir, `${classname}.nitro`))) {
+				if (!nitroSet.has(`${classname}.nitro`)) {
 					stillMissing.push(classname);
 				}
 			}
@@ -601,28 +605,47 @@ export async function runCatalogAudit(
 	onEvent?.({ type: "progress", message: "Comparing with clone sources…" });
 
 	const sources = await listSources();
-	for (const source of sources) {
+	const sourceResults = await Promise.all(
-		if (!source.furnidataUrl) continue;
+		sources
+			.filter((s) => s.furnidataUrl)
+			.map(async (source) => {
 				try {
 					const entries = await fetchSourceFurnidata(source.furnidataUrl);
-			for (const entry of entries) {
+					return {
+						source,
+						entries,
+						error: null,
+					} as const;
+				} catch {
+					return {
+						source,
+						entries: [] as Array<{ classname: string; name: string }>,
+						error: true,
+					} as const;
+				}
+			}),
+	);
+
+	for (const result of sourceResults) {
+		if (result.error) {
+			issues.push({
+				type: "source_fetch_failed",
+				severity: "error",
+				sourceName: result.source.name,
+				message: `Failed to fetch furnidata from "${result.source.name}"`,
+			});
+			continue;
+		}
+		for (const entry of result.entries) {
 			if (!itemByName.has(entry.classname)) {
 				missingFromSources.push({
-						sourceName: source.name,
+					sourceName: result.source.name,
-						sourceId: source.id,
+					sourceId: result.source.id,
 					classname: entry.classname,
 					itemName: entry.name,
 				});
 			}
 		}
-		} catch {
-			issues.push({
-				type: "source_fetch_failed",
-				severity: "error",
-				sourceName: source.name,
-				message: `Failed to fetch furnidata from "${source.name}"`,
-			});
-		}
 	}
 
 	issues.sort((a, b) => {