Improve application responsiveness and background processing

tests/unit/game-file-uploads.test.ts

@@ -5,7 +5,7 @@ import { join } from 'node:path';
 import { afterEach, beforeEach, describe, expect, it } from 'vitest';
 import {
     getUploadFileProgress, hashUploadedFiles, MAX_UPLOAD_CHUNK_BYTES,
-    receiveUploadChunk, UploadOffsetError, validateUploadPlan, withUploadLock
+    receiveUploadChunk, UploadOffsetError, validateUploadPlan, withUploadLock, withUploadFileLock
 } from '../../src/lib/server/game-files/uploads.js';
 import { manifestChecksum, verifyGameFile } from '../../src/lib/server/game-files/storage.js';
 
@@ -22,6 +22,22 @@ beforeEach(async () => {
 });
 afterEach(async () => { await rm(directory, { recursive: true, force: true }); });
 
+it('allows independent files together, serializes same-file offsets, and makes publication a barrier', async () => {
+    let release!: () => void;
+    const blocked = new Promise<void>(resolve => { release = resolve; });
+    const order: string[] = [];
+    const first = withUploadFileLock(root, 'a', async () => { order.push('a1'); await blocked; });
+    const same = withUploadFileLock(root, 'a', async () => { order.push('a2'); });
+    const other = withUploadFileLock(root, 'b', async () => { order.push('b'); });
+    const publish = withUploadLock(root, async () => { order.push('publish'); });
+    const later = withUploadFileLock(root, 'c', async () => { order.push('c'); });
+    await other;
+    expect(order).toEqual(['a1', 'b']);
+    release();
+    await Promise.all([first, same, publish, later]);
+    expect(order).toEqual(['a1', 'b', 'a2', 'publish', 'c']);
+});
+
 describe('browser folder upload plans', () => {
     it('preserves folder structure and source identity while sorting canonical paths', () => {
         expect(validateUploadPlan([{ path: 'zone/map.ff', size: 10, lastModified: 100 }, { path: 'main/data.iwd', size: 0 }])).toEqual([