chat.svelte.ts RawHistoryFolder

1/**
2 * Chat State Management
3 *
4 * Minimal state manager for user session.
5 * Real-time data (messages, users) comes from Convex subscriptions in components.
6 */
7
8import type { User, SafeUser } from '../types/chat';
9import { createSafeUser } from '../types/chat';
10
11class ChatState {
12	// Current user state (from session)
13	private _currentUser = $state<SafeUser | null>(null);
14	private _currentRoomId = $state<string | null>(null);
15	// SHA-256 hash of the session token: used as `tokenHash` for Convex authQuery/authMutation
16	private _sessionTokenHash = $state<string | null>(null);
17
18	// Connection state for UI feedback
19	private _connectionStatus = $state<'connected' | 'disconnected' | 'reconnecting'>('disconnected');
20
21	// Mention notifications per room
22	private _roomMentionCounts = $state<Record<string, number>>({});
23
24	// Derived public state
25	public connectionStatus = $derived(this._connectionStatus);
26	public isConnected = $derived(this._connectionStatus === 'connected');
27	public mentionTotal = $derived(
28		Object.values(this._roomMentionCounts).reduce((sum, count) => sum + count, 0)
29	);
30
31	getMentionTotal() {
32		return this.mentionTotal;
33	}
34
35	/**
36	 * Get the current user
37	 */
38	getCurrentUser() {
39		return this._currentUser;
40	}
41
42	/**
43	 * Set the current user (called from layout when session changes)
44	 */
45	setCurrentUser(user: User | SafeUser | null) {
46		if (!user) {
47			this._currentUser = null;
48			this._sessionTokenHash = null;
49			this._connectionStatus = 'disconnected';
50			this._roomMentionCounts = {};
51			return;
52		}
53
54		const safeUser = 'password' in user ? createSafeUser(user) : user;
55		this._currentUser = safeUser;
56		this._connectionStatus = 'connected';
57	}
58
59	/**
60	 * Session token hash for client-side authenticated Convex calls
61	 */
62	getSessionTokenHash() {
63		return this._sessionTokenHash;
64	}
65
66	setSessionTokenHash(hash: string | null) {
67		this._sessionTokenHash = hash;
68	}
69
70	/**
71	 * Get the current room ID
72	 */
73	getCurrentRoomId() {
74		return this._currentRoomId;
75	}
76
77	/**
78	 * Set the current room ID
79	 */
80	setCurrentRoomId(roomId: string | null) {
81		this._currentRoomId = roomId;
82	}
83
84	/**
85	 * Set connection status
86	 */
87	setConnectionStatus(status: 'connected' | 'disconnected' | 'reconnecting') {
88		this._connectionStatus = status;
89	}
90
91	/**
92	 * Update mention count for a room
93	 */
94	setRoomMentionCount(roomId: string | null, count: number) {
95		if (!roomId) return;
96		const next = Math.max(0, count);
97		if (this._roomMentionCounts[roomId] === next) return;
98		this._roomMentionCounts = { ...this._roomMentionCounts, [roomId]: next };
99	}
100
101	/**
102	 * Get mention count for a room
103	 */
104	getRoomMentionCount(roomId: string | null) {
105		if (!roomId) return 0;
106		return this._roomMentionCounts[roomId] ?? 0;
107	}
108}
109
110export const chatState = new ChatState();