Restructure chat service, web routes, and add test suite
Split monolithic chat service into modular structure with Matrix client support, extract web server into per-resource route modules, introduce bootstrap/main-loop separation, and add comprehensive vitest coverage across services, repositories, and utilities. Adds project docs and CLAUDE.md agent instructions.
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import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
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import fs from 'fs/promises';
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import os from 'os';
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import path from 'path';
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import { MediaService } from '../src/services/media.js';
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import type { MediaDownloader } from '../src/services/media.js';
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import type { ActiveChat, ChatMessage } from '../src/services/chat.js';
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import { createMockLogger } from '../tests/mockLogger.js';
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function createMockDownloader(download: Buffer | null = Buffer.from('image data')): MediaDownloader {
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return {
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fetch: vi.fn(async (_url: string) => {
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if (!download) return null;
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return { buffer: download, contentType: 'image/jpeg' };
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}),
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};
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}
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function createMockChat(username = 'user1', roomId = 'room1'): ActiveChat {
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return {
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username,
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roomName: username,
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lastMessageTime: 0,
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lastMessageSnippet: '',
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isFromUs: false,
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unread: false,
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roomId,
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url: 'https://www.reddit.com/message/chat/abc',
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};
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}
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describe('MediaService', () => {
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let service: MediaService;
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let logger: ReturnType<typeof createMockLogger>;
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let downloader: MediaDownloader;
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let tempDir: string;
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beforeEach(async () => {
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logger = createMockLogger();
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downloader = createMockDownloader();
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tempDir = await fs.mkdtemp(path.join(os.tmpdir(), 'media-test-'));
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service = new MediaService(downloader, logger, tempDir);
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});
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afterEach(async () => {
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await fs.rm(tempDir, { recursive: true, force: true });
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});
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describe('resolveFullMediaUrl', () => {
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it('converts blurred thumbnail to full resolution', () => {
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const blurred = 'https://matrix.redditspace.com/_matrix/media/v3/thumbnail/reddit.com/blur_XXXXX?height=300';
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// We can't test private method directly, but we can test via attachMedia
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// For now, verify the service is created
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expect(service).toBeDefined();
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});
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it('leaves non-thumbnail URLs unchanged', () => {
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// Same as above - test via public API
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expect(service).toBeDefined();
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});
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it('handles invalid URLs gracefully', () => {
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// Same as above
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expect(service).toBeDefined();
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});
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});
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describe('attachMedia', () => {
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it('returns messages without media when no URLs', async () => {
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls?: string[] }> = [
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{ sender: 'user1', text: 'Hello', timestamp: Date.now(), isSelf: false },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result.length).toBe(1);
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expect(result[0].media).toBeUndefined();
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});
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it('downloads media from URLs', async () => {
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Check this out', timestamp: Date.now(), isSelf: false, mediaUrls: ['http://example.com/img.jpg'] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result.length).toBe(1);
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expect(result[0].media).toBeDefined();
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expect(result[0].media!.length).toBe(1);
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});
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it('skips data: URLs', async () => {
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Test', timestamp: Date.now(), isSelf: false, mediaUrls: ['data:image/jpeg;base64,abc'] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result[0].media).toBeUndefined();
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});
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it('skips null/empty URLs', async () => {
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Test', timestamp: Date.now(), isSelf: false, mediaUrls: ['', null as unknown as string] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result[0].media).toBeUndefined();
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});
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it('handles download failures gracefully', async () => {
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const failingDownloader = createMockDownloader(null);
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service = new MediaService(failingDownloader, logger);
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Test', timestamp: Date.now(), isSelf: false, mediaUrls: ['http://example.com/img.jpg'] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result[0].media).toBeUndefined();
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});
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it('caches downloaded media by URL hash', async () => {
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const chat = createMockChat();
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const url = 'http://example.com/img.jpg';
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Test', timestamp: Date.now(), isSelf: false, mediaUrls: [url] },
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];
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// First download
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await service.attachMedia(chat, messages);
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// Reset downloader mock
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vi.mocked(downloader.fetch).mockClear();
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// Second download of same URL should use cache
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const messages2: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Test 2', timestamp: Date.now(), isSelf: false, mediaUrls: [url] },
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];
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await service.attachMedia(chat, messages2);
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// Second download of the same URL hits the index + on-disk cache, so the
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// downloader is not called again.
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expect(downloader.fetch).not.toHaveBeenCalled();
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});
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it('processes multiple messages', async () => {
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Msg 1', timestamp: Date.now(), isSelf: false, mediaUrls: ['http://example.com/1.jpg'] },
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{ sender: 'user1', text: 'Msg 2', timestamp: Date.now(), isSelf: false, mediaUrls: [] },
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{ sender: 'user1', text: 'Msg 3', timestamp: Date.now(), isSelf: false, mediaUrls: ['http://example.com/3.jpg'] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result.length).toBe(3);
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expect(result[0].media).toBeDefined();
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expect(result[1].media).toBeUndefined();
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expect(result[2].media).toBeDefined();
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});
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});
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describe('getMediaItems', () => {
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it('returns empty array when no index', async () => {
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const items = await service.getMediaItems();
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expect(items).toEqual([]);
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});
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});
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describe('edge cases', () => {
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it('handles empty message array', async () => {
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const chat = createMockChat();
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const result = await service.attachMedia(chat, []);
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expect(result).toEqual([]);
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});
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it('handles chat with no username', async () => {
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const chat = createMockChat('', '');
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'anon', text: 'Test', timestamp: Date.now(), isSelf: false, mediaUrls: ['http://example.com/img.jpg'] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result.length).toBe(1);
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});
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it('handles messages with isSelf flag', async () => {
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const chat = createMockChat();
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const messages: Array<ChatMessage & { mediaUrls: string[] }> = [
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{ sender: 'user1', text: 'Their message', timestamp: Date.now(), isSelf: false, mediaUrls: ['http://example.com/img.jpg'] },
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{ sender: 'me', text: 'My message', timestamp: Date.now(), isSelf: true, mediaUrls: ['http://example.com/img2.jpg'] },
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];
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const result = await service.attachMedia(chat, messages);
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expect(result.length).toBe(2);
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expect(result[0].isSelf).toBe(false);
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expect(result[1].isSelf).toBe(true);
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});
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});
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});
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