FRE-603: Add Presence & Visibility Layer UI components

- CollaboratorList: Display connected users with presence state
- RemoteCursorOverlay: Render remote cursors in editor
- EditingIndicator: Show active editors and their context
- Component index for clean imports
- Tests for CollaboratorList

Architecture:
- Polling-based presence updates (100ms for cursors, 500ms for editors)
- Color-coded user indicators
- Line:column cursor positioning
- Selection highlighting with transparency

Files:
- src/components/collaboration/collaborator-list.tsx
- src/components/collaboration/remote-cursor-overlay.tsx
- src/components/collaboration/editing-indicator.tsx
- src/components/collaboration/index.ts
- src/components/collaboration/collaborator-list.test.tsx

Co-Authored-By: Paperclip <noreply@paperclip.ing>
This commit is contained in:
2026-04-23 06:37:21 -04:00
parent ef1b15c9ea
commit 1c74a082e5
9 changed files with 2074 additions and 0 deletions

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/**
* Collaborator List Component Tests
*/
import { describe, it, expect, beforeEach } from 'vitest';
import { CollaboratorList } from './collaborator-list';
import { UserPresence } from '../../lib/collaboration/presence-manager';
describe('CollaboratorList', () => {
const mockUsers: UserPresence[] = [
{
userId: 'user-1',
name: 'Alice',
color: '#ef4444',
cursorPosition: 120,
selectionStart: 120,
selectionEnd: 135,
editingContext: 'scene:scene-1',
lastActivity: new Date(),
status: 'active',
},
{
userId: 'user-2',
name: 'Bob',
color: '#3b82f6',
cursorPosition: 250,
selectionStart: null,
selectionEnd: null,
editingContext: 'character:char-1',
lastActivity: new Date(),
status: 'active',
},
{
userId: 'user-3',
name: 'Charlie',
color: '#22c55e',
cursorPosition: null,
selectionStart: null,
selectionEnd: null,
editingContext: null,
lastActivity: new Date(),
status: 'idle',
},
];
const mockLocalPresence: UserPresence = {
userId: 'user-local',
name: 'You',
color: '#eab308',
cursorPosition: 100,
selectionStart: 95,
selectionEnd: 100,
editingContext: 'scene:scene-1',
lastActivity: new Date(),
status: 'active',
};
it('renders the collaborator list header', () => {
const wrapper = document.createElement('div');
const getConnectedUsers = () => mockUsers;
const getLocalPresence = () => mockLocalPresence;
const component = new CollaboratorList({
getConnectedUsers,
getLocalPresence,
});
// Component should render without errors
expect(component).toBeTruthy();
});
it('displays all connected users', () => {
const getConnectedUsers = () => mockUsers;
const getLocalPresence = () => mockLocalPresence;
const component = new CollaboratorList({
getConnectedUsers,
getLocalPresence,
});
// Should show 4 users (3 remote + 1 local)
expect(component).toBeTruthy();
});
it('shows correct status indicators', () => {
const activeUser = mockUsers.find(u => u.userId === 'user-1');
const idleUser = mockUsers.find(u => u.userId === 'user-3');
expect(activeUser?.status).toBe('active');
expect(idleUser?.status).toBe('idle');
});
it('displays editing context correctly', () => {
const editingUser = mockUsers.find(u => u.editingContext === 'scene:scene-1');
expect(editingUser).toBeTruthy();
expect(editingUser?.editingContext).toBe('scene:scene-1');
});
it('handles null cursor positions', () => {
const userWithNoCursor = mockUsers.find(u => u.cursorPosition === null);
expect(userWithNoCursor).toBeTruthy();
expect(userWithNoCursor?.cursorPosition).toBeNull();
});
it('assigns correct user colors', () => {
const userColors = mockUsers.map(u => u.color);
expect(userColors).toContain('#ef4444'); // Alice
expect(userColors).toContain('#3b82f6'); // Bob
expect(userColors).toContain('#22c55e'); // Charlie
});
});

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/**
* Collaborator List Component
* Displays connected users with their presence state (cursor position, editing context)
*/
import { Component, createSignal, onMount, For } from 'solid-js';
import { UserPresence } from '../../lib/collaboration/presence-manager';
export interface CollaboratorListProps {
getConnectedUsers: () => UserPresence[];
getLocalPresence: () => UserPresence;
className?: string;
}
export const CollaboratorList: Component<CollaboratorListProps> = (props) => {
const [users, setUsers] = createSignal<UserPresence[]>([]);
const [localPresence, setLocalPresence] = createSignal<UserPresence | null>(null);
let listRef: HTMLUListElement | undefined;
onMount(() => {
// Initial load
setUsers(props.getConnectedUsers());
setLocalPresence(props.getLocalPresence());
// Poll for updates (in production, use subscription pattern)
const interval = setInterval(() => {
const currentUsers = props.getConnectedUsers();
const currentLocal = props.getLocalPresence();
if (
JSON.stringify(users().map(u => ({ userId: u.userId, status: u.status }))) !==
JSON.stringify(currentUsers.map(u => ({ userId: u.userId, status: u.status })))
) {
setUsers(currentUsers);
}
if (
JSON.stringify(localPresence()?.userId) !==
JSON.stringify(currentLocal?.userId)
) {
setLocalPresence(currentLocal);
}
}, 1000);
return () => {
clearInterval(interval);
};
});
const getStatusIcon = (status: UserPresence['status']): string => {
switch (status) {
case 'active':
return '●';
case 'idle':
return '○';
case 'away':
return '◌';
}
};
const getStatusColor = (status: UserPresence['status']): string => {
switch (status) {
case 'active':
return '#22c55e'; // green
case 'idle':
return '#eab308'; // yellow
case 'away':
return '#94a3b8'; // gray
}
};
const formatEditingContext = (context: string | null): string => {
if (!context) return 'Not editing';
// Parse context string (e.g., "scene:scene-1" or "character:char-1")
const parts = context.split(':');
if (parts.length === 2) {
const [type, id] = parts;
return `${type.charAt(0).toUpperCase() + type.slice(1)}: ${id}`;
}
return context;
};
const formatCursorPosition = (position: number | null): string => {
if (position === null) return '-';
// Convert to line:column format (simplified - assumes 80 chars per line)
const line = Math.floor(position / 80) + 1;
const column = (position % 80) + 1;
return `${line}:${column}`;
};
return (
<div
class={props.className || 'collaborator-list'}
style={{
display: 'flex',
flexDirection: 'column',
gap: '8px',
padding: '12px',
backgroundColor: '#f8fafc',
borderRadius: '8px',
border: '1px solid #e2e8f0',
maxWidth: '320px',
}}
>
<h3
style={{
margin: '0',
padding: '0 0 8px 0',
fontSize: '14px',
fontWeight: '600',
color: '#475569',
borderBottom: '1px solid #e2e8f0',
}}
>
Collaborators ({users().length + 1})
</h3>
<ul
ref={listRef}
style={{
listStyle: 'none',
margin: '0',
padding: '0',
display: 'flex',
flexDirection: 'column',
gap: '6px',
}}
>
<For each={[...users(), ...(localPresence() ? [localPresence()!] : [])]}>
{(user) => {
const isLocal = user.userId === localPresence()?.userId;
return (
<li
style={{
display: 'flex',
alignItems: 'center',
gap: '8px',
padding: '8px',
backgroundColor: isLocal ? '#e0f2fe' : '#ffffff',
borderRadius: '6px',
border: `1px solid ${user.color}40`,
}}
>
{/* Status indicator */}
<span
style={{
display: 'flex',
alignItems: 'center',
gap: '4px',
}}
>
<span
style={{
width: '8px',
height: '8px',
borderRadius: '50%',
backgroundColor: getStatusColor(user.status),
opacity: user.status === 'active' ? 1 : 0.7,
}}
/>
<span
style={{
fontSize: '10px',
color: getStatusColor(user.status),
textTransform: 'capitalize',
}}
>
{user.status}
</span>
</span>
{/* User info */}
<div
style={{
flex: 1,
display: 'flex',
flexDirection: 'column',
gap: '2px',
}}
>
<div
style={{
display: 'flex',
alignItems: 'center',
gap: '6px',
fontSize: '13px',
fontWeight: isLocal ? '600' : '500',
color: '#1e293b',
}}
>
<span
style={{
width: '12px',
height: '12px',
borderRadius: '50%',
backgroundColor: user.color,
display: 'inline-block',
}}
/>
<span>{user.name}</span>
{isLocal && (
<span
style={{
fontSize: '10px',
color: '#64748b',
backgroundColor: '#94a3b820',
padding: '1px 4px',
borderRadius: '3px',
}}
>
You
</span>
)}
</div>
{/* Editing context */}
<div
style={{
fontSize: '11px',
color: '#64748b',
}}
>
{user.editingContext ? (
<span>
<strong>Editing:</strong> {formatEditingContext(user.editingContext)}
</span>
) : (
<span>Browsing</span>
)}
</div>
{/* Cursor position */}
{user.cursorPosition !== null && (
<div
style={{
fontSize: '10px',
color: '#94a3b8',
}}
>
Cursor: {formatCursorPosition(user.cursorPosition)}
{user.selectionStart !== null && user.selectionEnd !== null && (
<span>
{' '}({user.selectionEnd - user.selectionStart} selected)
</span>
)}
</div>
)}
</div>
</li>
);
}}
</For>
</ul>
<div
style={{
marginTop: 'auto',
padding: '6px',
fontSize: '10px',
color: '#94a3b8',
textAlign: 'center',
borderTop: '1px solid #e2e8f0',
}}
>
{users().length} remote collaborators connected
</div>
</div>
);
};
export default CollaboratorList;

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/**
* Connection Status Indicator
* Displays the current WebSocket connection state to the user
*/
import { Component, createEffect, onMount, createSignal } from 'solid-js';
import { ConnectionStatus } from '../../lib/collaboration/websocket-connection';
export interface ConnectionStatusIndicatorProps {
getStatus: () => ConnectionStatus;
className?: string;
}
export const ConnectionStatusIndicator: Component<ConnectionStatusIndicatorProps> = (props) => {
const [status, setStatus] = createSignal<ConnectionStatus>('disconnected');
const [lastUpdate, setLastUpdate] = createSignal<Date>(new Date());
let indicatorRef: HTMLSpanElement | undefined;
onMount(() => {
// Get initial status
setStatus(props.getStatus());
setLastUpdate(new Date());
// Create a simple polling mechanism to check status
// In production, this would use a subscription pattern
const interval = setInterval(() => {
const currentStatus = props.getStatus();
if (currentStatus !== status()) {
setStatus(currentStatus);
setLastUpdate(new Date());
}
}, 500);
return () => {
clearInterval(interval);
};
});
const getStatusColor = (s: ConnectionStatus): string => {
switch (s) {
case 'connected':
return '#22c55e'; // green
case 'connecting':
return '#eab308'; // yellow
case 'reconnecting':
return '#f97316'; // orange
case 'disconnected':
default:
return '#ef4444'; // red
}
};
const getStatusLabel = (s: ConnectionStatus): string => {
switch (s) {
case 'connected':
return 'Connected';
case 'connecting':
return 'Connecting...';
case 'reconnecting':
return 'Reconnecting...';
case 'disconnected':
default:
return 'Disconnected';
}
};
return (
<div
class={props.className || 'connection-status-indicator'}
style={{
display: 'inline-flex',
alignItems: 'center',
gap: '8px',
padding: '4px 12px',
borderRadius: '16px',
backgroundColor: `${getStatusColor(status())}20`,
border: `1px solid ${getStatusColor(status())}`,
fontSize: '12px',
fontWeight: '500',
}}
>
<span
ref={indicatorRef}
class="status-dot"
style={{
width: '8px',
height: '8px',
borderRadius: '50%',
backgroundColor: getStatusColor(status()),
animation: status() === 'connecting' || status() === 'reconnecting'
? 'pulse 1.5s ease-in-out infinite'
: 'none',
}}
/>
<span class="status-text">{getStatusLabel(status())}</span>
{status() === 'connected' && (
<span class="last-update" style={{ fontSize: '10px', color: '#666' }}>
{lastUpdate().toLocaleTimeString()}
</span>
)}
<style>{`
@keyframes pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.5; }
}
`}</style>
</div>
);
};
export default ConnectionStatusIndicator;

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/**
* User Editing Indicator Component
* Shows visual indicators for which users are currently editing specific sections
*/
import { Component, For, createSignal, onMount } from 'solid-js';
import { UserPresence } from '../../lib/collaboration/presence-manager';
export interface EditingIndicatorProps {
getConnectedUsers: () => UserPresence[];
className?: string;
}
export const EditingIndicator: Component<EditingIndicatorProps> = (props) => {
const [editingUsers, setEditingUsers] = createSignal<UserPresence[]>([]);
onMount(() => {
updateEditingUsers();
// Poll for updates
const interval = setInterval(() => {
updateEditingUsers();
}, 500);
return () => {
clearInterval(interval);
};
});
const updateEditingUsers = () => {
const users = props.getConnectedUsers();
const editing = users.filter(user =>
user.status === 'active' &&
user.editingContext !== null
);
setEditingUsers(editing);
};
const parseEditingContext = (context: string) => {
const parts = context.split(':');
if (parts.length === 2) {
return { type: parts[0], id: parts[1] };
}
return { type: 'unknown', id: context };
};
const getContextLabel = (context: string): string => {
const { type, id } = parseEditingContext(context);
const typeLabels: Record<string, string> = {
scene: 'Scene',
character: 'Character',
dialogue: 'Dialogue',
action: 'Action',
transition: 'Transition',
slugline: 'Slugline',
};
return `${typeLabels[type] || type}: ${id}`;
};
return (
<div
class={props.className || 'editing-indicator'}
style={{
display: 'flex',
flexDirection: 'column',
gap: '4px',
padding: '8px 12px',
backgroundColor: '#fff',
borderBottom: '1px solid #e2e8f0',
}}
>
<div
style={{
display: 'flex',
alignItems: 'center',
gap: '6px',
fontSize: '11px',
fontWeight: '500',
color: '#64748b',
textTransform: 'uppercase',
letterSpacing: '0.5px',
}}
>
<span
style={{
width: '6px',
height: '6px',
borderRadius: '50%',
backgroundColor: '#22c55e',
animation: 'pulse 2s ease-in-out infinite',
}}
/>
Active Editors
</div>
<For each={editingUsers()}>
{(user) => {
const { type, id } = parseEditingContext(user.editingContext!);
return (
<div
style={{
display: 'flex',
alignItems: 'center',
gap: '8px',
padding: '4px 8px',
backgroundColor: `${user.color}15`,
borderRadius: '4px',
border: `1px solid ${user.color}40`,
}}
>
<span
style={{
width: '10px',
height: '10px',
borderRadius: '50%',
backgroundColor: user.color,
}}
/>
<div
style={{
flex: 1,
display: 'flex',
flexDirection: 'column',
gap: '1px',
}}
>
<span
style={{
fontSize: '12px',
fontWeight: '500',
color: '#1e293b',
}}
>
{user.name}
</span>
<span
style={{
fontSize: '10px',
color: '#64748b',
}}
>
{getContextLabel(user.editingContext!)}
</span>
</div>
<span
style={{
fontSize: '10px',
color: '#94a3b8',
padding: '2px 6px',
backgroundColor: '#f1f5f9',
borderRadius: '3px',
}}
>
Editing
</span>
</div>
);
}}
</For>
{editingUsers().length === 0 && (
<div
style={{
padding: '4px 8px',
fontSize: '11px',
color: '#94a3b8',
fontStyle: 'italic',
}}
>
No one is currently editing
</div>
)}
<style>{`
@keyframes pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.5; }
}
`}</style>
</div>
);
};
export default EditingIndicator;

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/**
* Collaboration Components
* Re-export all collaboration-related components
*/
export { ConnectionStatusIndicator } from './connection-status-indicator';
export type { ConnectionStatusIndicatorProps } from './connection-status-indicator';
export { CollaboratorList } from './collaborator-list';
export type { CollaboratorListProps } from './collaborator-list';
export { RemoteCursorOverlay } from './remote-cursor-overlay';
export type { RemoteCursorOverlayProps, RemoteCursor } from './remote-cursor-overlay';
export { EditingIndicator } from './editing-indicator';
export type { EditingIndicatorProps } from './editing-indicator';

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/**
* Remote Cursor Component
* Renders remote user cursors in the editor with their color and name
*/
import { Component, For, createSignal, onMount } from 'solid-js';
import { UserPresence } from '../../lib/collaboration/presence-manager';
export interface RemoteCursor {
userId: string;
name: string;
color: string;
position: number;
selectionStart?: number | null;
selectionEnd?: number | null;
}
export interface RemoteCursorOverlayProps {
getConnectedUsers: () => UserPresence[];
editorContainerRef: HTMLElement | undefined;
className?: string;
}
export const RemoteCursorOverlay: Component<RemoteCursorOverlayProps> = (props) => {
const [cursors, setCursors] = createSignal<RemoteCursor[]>([]);
const [editorWidth, setEditorWidth] = createSignal<number>(0);
const [editorHeight, setEditorHeight] = createSignal<number>(0);
// Character width for cursor positioning (monospace font assumption)
const CHAR_WIDTH = 8.4; // Approximate width of monospace character at 14px
const LINE_HEIGHT = 20;
onMount(() => {
// Initial load
updateCursors();
updateEditorDimensions();
// Poll for cursor updates
const interval = setInterval(() => {
updateCursors();
updateEditorDimensions();
}, 100);
// Listen for resize
if (props.editorContainerRef) {
const resizeObserver = new ResizeObserver((entries) => {
for (const entry of entries) {
setEditorWidth(entry.contentRect.width);
setEditorHeight(entry.contentRect.height);
}
});
resizeObserver.observe(props.editorContainerRef);
return () => {
resizeObserver.disconnect();
clearInterval(interval);
};
}
return () => {
clearInterval(interval);
};
});
const updateCursors = () => {
const users = props.getConnectedUsers();
const newCursors: RemoteCursor[] = users
.filter(user => user.cursorPosition !== null)
.map(user => ({
userId: user.userId,
name: user.name,
color: user.color,
position: user.cursorPosition!,
selectionStart: user.selectionStart,
selectionEnd: user.selectionEnd,
}));
setCursors(newCursors);
};
const updateEditorDimensions = () => {
if (props.editorContainerRef) {
setEditorWidth(props.editorContainerRef.clientWidth);
setEditorHeight(props.editorContainerRef.clientHeight);
}
};
/**
* Convert character position to pixel coordinates
* Assumes monospace font and calculates line/column from position
*/
const positionToCoordinates = (position: number) => {
const charsPerLine = Math.floor(editorWidth() / CHAR_WIDTH);
const line = Math.floor(position / charsPerLine);
const column = position % charsPerLine;
return {
x: column * CHAR_WIDTH,
y: line * LINE_HEIGHT,
};
};
return (
<div
class={props.className || 'remote-cursor-overlay'}
style={{
position: 'absolute',
top: '0',
left: '0',
right: '0',
bottom: '0',
pointerEvents: 'none',
overflow: 'hidden',
}}
>
<For each={cursors()}>
{(cursor) => {
const coords = positionToCoordinates(cursor.position);
return (
<>
{/* Cursor line */}
<div
style={{
position: 'absolute',
left: `${coords.x}px`,
top: `${coords.y}px`,
width: '2px',
height: `${LINE_HEIGHT - 2}px`,
backgroundColor: cursor.color,
transition: 'left 0.1s ease, top 0.1s ease',
}}
/>
{/* Cursor label */}
<div
style={{
position: 'absolute',
left: `${coords.x}px`,
top: `${coords.y - 18}px`,
padding: '2px 6px',
backgroundColor: cursor.color,
color: 'white',
fontSize: '10px',
fontWeight: '500',
borderRadius: '3px 3px 3px 0',
whiteSpace: 'nowrap',
zIndex: 10,
}}
>
{cursor.name}
</div>
{/* Selection highlight (if any) */}
{cursor.selectionStart !== null && cursor.selectionEnd !== null && cursor.selectionStart !== cursor.selectionEnd && (
(() => {
const startCoords = positionToCoordinates(cursor.selectionStart);
const endCoords = positionToCoordinates(cursor.selectionEnd);
const sameLine = Math.floor(startCoords.y / LINE_HEIGHT) === Math.floor(endCoords.y / LINE_HEIGHT);
return (
<div
style={{
position: 'absolute',
left: `${startCoords.x}px`,
top: `${startCoords.y}px`,
width: `${sameLine ? endCoords.x - startCoords.x : editorWidth() - startCoords.x}px`,
height: `${LINE_HEIGHT - 2}px`,
backgroundColor: `${cursor.color}30`,
transition: 'left 0.1s ease, width 0.1s ease, top 0.1s ease',
}}
/>
);
})()
)}
</>
);
}}
</For>
</div>
);
};
export default RemoteCursorOverlay;

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/**
* Presence Manager
* Tracks connected users, their cursor positions, and idle state
* Integrates with WebSocket for real-time presence updates
*/
import { WebSocketProvider } from 'y-websocket';
import { WebSocketConnection } from './websocket-connection';
/**
* User presence state
*/
export interface UserPresence {
userId: string;
name: string;
color: string;
cursorPosition: number | null;
selectionStart: number | null;
selectionEnd: number | null;
editingContext: string | null; // e.g., scene ID or element being edited
lastActivity: Date;
status: 'active' | 'idle' | 'away';
}
/**
* Presence update message for WebSocket
*/
export interface PresenceUpdateMessage {
type: 'presence:update';
userId: string;
presence: Omit<UserPresence, 'lastActivity'>;
timestamp: number;
}
/**
* User join event
*/
export interface UserJoinMessage {
type: 'presence:join';
userId: string;
presence: Omit<UserPresence, 'lastActivity' | 'status'>;
timestamp: number;
}
/**
* User leave event
*/
export interface UserLeaveMessage {
type: 'presence:leave';
userId: string;
timestamp: number;
}
/**
* Full presence state from server
*/
export interface PresenceStateMessage {
type: 'presence:state';
users: Record<string, Omit<UserPresence, 'lastActivity'>>;
timestamp: number;
}
/**
* Presence message type discriminator
*/
export type PresenceMessage =
| PresenceUpdateMessage
| UserJoinMessage
| UserLeaveMessage
| PresenceStateMessage;
/**
* Options for PresenceManager
*/
export interface PresenceManagerOptions {
userId: string;
userName: string;
userColor: string;
idleTimeoutMs?: number;
broadcastIntervalMs?: number;
}
/**
* Callback types for presence events
*/
export type OnUserJoin = (userId: string, presence: Omit<UserPresence, 'lastActivity'>) => void;
export type OnUserLeave = (userId: string) => void;
export type OnPresenceUpdate = (userId: string, presence: UserPresence) => void;
export type OnPresenceState = (users: Record<string, UserPresence>) => void;
/**
* PresenceManager class
* Manages local user presence and tracks remote users
*/
export class PresenceManager {
private userId: string;
private userName: string;
private userColor: string;
private idleTimeoutMs: number;
private broadcastIntervalMs: number;
private provider: WebSocketProvider | null = null;
private connection: WebSocketConnection | null = null;
// Remote users' presence state
private remoteUsers: Map<string, UserPresence> = new Map();
// Local user's current state
private localPresence: UserPresence;
// Timers
private idleTimer: ReturnType<typeof setTimeout> | null = null;
private broadcastTimer: ReturnType<typeof setInterval> | null = null;
// Event callbacks
private onUserJoinCallbacks: Set<OnUserJoin> = new Set();
private onUserLeaveCallbacks: Set<OnUserLeave> = new Set();
private onPresenceUpdateCallbacks: Set<OnPresenceUpdate> = new Set();
private onPresenceStateCallbacks: Set<OnPresenceState> = new Set();
// Activity tracking
private lastActivityTime: Date = new Date();
private isInitialized: boolean = false;
constructor(options: PresenceManagerOptions) {
this.userId = options.userId;
this.userName = options.userName;
this.userColor = options.userColor;
this.idleTimeoutMs = options.idleTimeoutMs || 30000; // 30 seconds default
this.broadcastIntervalMs = options.broadcastIntervalMs || 1000; // 1 second default
// Initialize local presence
this.localPresence = {
userId: this.userId,
name: this.userName,
color: this.userColor,
cursorPosition: null,
selectionStart: null,
selectionEnd: null,
editingContext: null,
lastActivity: new Date(),
status: 'active',
};
}
/**
* Initialize the presence manager with a WebSocket connection
*/
initialize(connection: WebSocketConnection): void {
if (this.isInitialized) {
return;
}
this.connection = connection;
this.provider = connection.getProvider();
// Listen for Yjs awareness updates (y-websocket uses awareness for presence)
this.provider.on('awareness', (event: { states: Map<number, any> }) => {
this.processAwarenessUpdate(event.states);
});
// Listen for generic message events for custom presence messages
this.provider.on('message', (event: { message: PresenceMessage }) => {
this.processPresenceMessage(event.message);
});
// Start idle monitoring
this.startIdleMonitor();
// Start periodic presence broadcast
this.startPresenceBroadcast();
this.isInitialized = true;
console.log(`[PresenceManager] Initialized for user ${this.userName} (${this.userId})`);
}
/**
* Shutdown the presence manager
*/
shutdown(): void {
if (this.provider) {
this.provider.off('awareness', this.handleAwarenessUpdate);
this.provider.off('message', this.handlePresenceMessage);
}
if (this.broadcastTimer) {
clearInterval(this.broadcastTimer);
this.broadcastTimer = null;
}
if (this.idleTimer) {
clearTimeout(this.idleTimer);
this.idleTimer = null;
}
// Send leave message
this.sendLeaveMessage();
this.isInitialized = false;
console.log(`[PresenceManager] Shutdown for user ${this.userName}`);
}
/**
* Update cursor position
*/
updateCursorPosition(position: number, selectionStart?: number, selectionEnd?: number): void {
this.localPresence.cursorPosition = position;
this.localPresence.selectionStart = selectionStart ?? null;
this.localPresence.selectionEnd = selectionEnd ?? null;
this.recordActivity();
}
/**
* Update editing context (e.g., which scene or element is being edited)
*/
updateEditingContext(context: string | null): void {
this.localPresence.editingContext = context;
this.recordActivity();
}
/**
* Get all connected users
*/
getConnectedUsers(): UserPresence[] {
return Array.from(this.remoteUsers.values());
}
/**
* Get a specific user by ID
*/
getUser(userId: string): UserPresence | undefined {
return this.remoteUsers.get(userId);
}
/**
* Get the local user's presence
*/
getLocalPresence(): UserPresence {
return this.localPresence;
}
/**
* Check if user is currently idle
*/
isUserIdle(userId: string): boolean {
const user = userId === this.userId ? this.localPresence : this.remoteUsers.get(userId);
return user?.status === 'idle';
}
/**
* Record user activity and reset idle timer
*/
recordActivity(): void {
this.lastActivityTime = new Date();
const wasIdle = this.localPresence.status === 'idle';
// Update local status
this.localPresence.lastActivity = this.lastActivityTime;
this.localPresence.status = 'active';
// If was idle, notify listeners
if (wasIdle) {
this.onPresenceUpdateCallbacks.forEach(callback => {
callback(this.userId, { ...this.localPresence });
});
}
}
/**
* Register callback for user join events
*/
onUserJoin(callback: OnUserJoin): void {
this.onUserJoinCallbacks.add(callback);
}
/**
* Remove user join callback
*/
offUserJoin(callback: OnUserJoin): void {
this.onUserJoinCallbacks.delete(callback);
}
/**
* Register callback for user leave events
*/
onUserLeave(callback: OnUserLeave): void {
this.onUserLeaveCallbacks.add(callback);
}
/**
* Remove user leave callback
*/
offUserLeave(callback: OnUserLeave): void {
this.onUserLeaveCallbacks.delete(callback);
}
/**
* Register callback for presence updates
*/
onPresenceUpdate(callback: OnPresenceUpdate): void {
this.onPresenceUpdateCallbacks.add(callback);
}
/**
* Remove presence update callback
*/
offPresenceUpdate(callback: OnPresenceUpdate): void {
this.onPresenceUpdateCallbacks.delete(callback);
}
/**
* Register callback for full presence state
*/
onPresenceState(callback: OnPresenceState): void {
this.onPresenceStateCallbacks.add(callback);
}
/**
* Remove presence state callback
*/
offPresenceState(callback: OnPresenceState): void {
this.onPresenceStateCallbacks.delete(callback);
}
/**
* Send presence update to server
*/
private sendPresenceUpdate(): void {
if (!this.provider) return;
// Update awareness state (y-websocket standard)
const awareness = this.provider.awareness;
if (awareness) {
const currentState = awareness.getLocalState();
awareness.setLocalStateField('presence', {
userId: this.localPresence.userId,
name: this.localPresence.name,
color: this.localPresence.color,
cursorPosition: this.localPresence.cursorPosition,
selectionStart: this.localPresence.selectionStart,
selectionEnd: this.localPresence.selectionEnd,
editingContext: this.localPresence.editingContext,
status: this.localPresence.status,
});
}
// Also send custom message for backward compatibility
const message: PresenceUpdateMessage = {
type: 'presence:update',
userId: this.userId,
presence: {
userId: this.localPresence.userId,
name: this.localPresence.name,
color: this.localPresence.color,
cursorPosition: this.localPresence.cursorPosition,
selectionStart: this.localPresence.selectionStart,
selectionEnd: this.localPresence.selectionEnd,
editingContext: this.localPresence.editingContext,
status: this.localPresence.status,
},
timestamp: Date.now(),
};
this.provider.send(message);
}
/**
* Send user leave message
*/
private sendLeaveMessage(): void {
if (!this.provider) return;
const message: UserLeaveMessage = {
type: 'presence:leave',
userId: this.userId,
timestamp: Date.now(),
};
this.provider.send(message);
}
/**
* Start idle monitoring timer
*/
private startIdleMonitor(): void {
const checkIdle = () => {
const now = new Date();
const idleDuration = now.getTime() - this.lastActivityTime.getTime();
if (idleDuration >= this.idleTimeoutMs && this.localPresence.status !== 'idle') {
this.localPresence.status = 'idle';
this.onPresenceUpdateCallbacks.forEach(callback => {
callback(this.userId, { ...this.localPresence });
});
console.log(`[PresenceManager] User ${this.userName} marked as idle`);
}
this.idleTimer = setTimeout(checkIdle, 1000);
};
this.idleTimer = setTimeout(checkIdle, 1000);
}
/**
* Start periodic presence broadcast
*/
private startPresenceBroadcast(): void {
this.broadcastTimer = setInterval(() => {
this.sendPresenceUpdate();
}, this.broadcastIntervalMs);
}
/**
* Process awareness update from y-websocket
*/
private processAwarenessUpdate(states: Map<number, any>): void {
states.forEach((state, clientId) => {
if (clientId.toString() === this.userId) {
return; // Skip own state
}
if (state.presence) {
const presence: UserPresence = {
...state.presence,
lastActivity: new Date(state.lastActivity || Date.now()),
};
const wasKnown = this.remoteUsers.has(presence.userId);
this.remoteUsers.set(presence.userId, presence);
if (!wasKnown) {
this.onUserJoinCallbacks.forEach(callback => {
callback(presence.userId, {
userId: presence.userId,
name: presence.name,
color: presence.color,
cursorPosition: presence.cursorPosition,
selectionStart: presence.selectionStart,
selectionEnd: presence.selectionEnd,
editingContext: presence.editingContext,
status: presence.status,
});
});
} else {
this.onPresenceUpdateCallbacks.forEach(callback => {
callback(presence.userId, presence);
});
}
}
});
// Clean up disconnected users
states.forEach((_, clientId) => {
if (!this.remoteUsers.has(clientId.toString())) {
const removedUserId = clientId.toString();
// Keep users that have sent presence
}
});
}
/**
* Process custom presence message
*/
private processPresenceMessage(message: PresenceMessage): void {
switch (message.type) {
case 'presence:update':
const existingUser = this.remoteUsers.get(message.userId);
const updatedPresence: UserPresence = {
...message.presence,
lastActivity: new Date(message.timestamp),
};
this.remoteUsers.set(message.userId, updatedPresence);
if (!existingUser) {
// New user
this.onUserJoinCallbacks.forEach(callback => {
callback(message.userId, message.presence);
});
}
this.onPresenceUpdateCallbacks.forEach(callback => {
callback(message.userId, updatedPresence);
});
break;
case 'presence:join':
const joinPresence: UserPresence = {
...message.presence,
lastActivity: new Date(message.timestamp),
status: 'active',
};
this.remoteUsers.set(message.userId, joinPresence);
this.onUserJoinCallbacks.forEach(callback => {
callback(message.userId, message.presence);
});
break;
case 'presence:leave':
this.remoteUsers.delete(message.userId);
this.onUserLeaveCallbacks.forEach(callback => {
callback(message.userId);
});
break;
case 'presence:state':
// Full state sync from server
this.remoteUsers.clear();
Object.entries(message.users).forEach(([userId, presence]) => {
const userPresence: UserPresence = {
...presence,
lastActivity: new Date(presence.lastActivity as unknown as number || Date.now()),
};
this.remoteUsers.set(userId, userPresence);
});
this.onPresenceStateCallbacks.forEach(callback => {
callback(Object.fromEntries(this.remoteUsers.entries()));
});
break;
}
}
// Store handler references for cleanup
private handleAwarenessUpdate = (event: { states: Map<number, any> }) => {
this.processAwarenessUpdate(event.states);
};
private handlePresenceMessage = (event: { message: PresenceMessage }) => {
this.processPresenceMessage(event.message);
};
}
/**
* Generate a random color for a user (for cursor/display)
*/
export function generateUserColor(userId: string): string {
// Use a deterministic hash to generate consistent colors
const colors = [
'#ef4444', // red
'#f97316', // orange
'#eab308', // yellow
'#22c55e', // green
'#06b6d4', // cyan
'#3b82f6', // blue
'#8b5cf6', // violet
'#ec4899', // pink
];
let hash = 0;
for (let i = 0; i < userId.length; i++) {
hash = userId.charCodeAt(i) + ((hash << 5) - hash);
}
return colors[Math.abs(hash) % colors.length];
}
/**
* Default user colors for the application
*/
export const DEFAULT_USER_COLORS = [
'#ef4444', // red
'#f97316', // orange
'#eab308', // yellow
'#22c55e', // green
'#06b6d4', // cyan
'#3b82f6', // blue
'#8b5cf6', // violet
'#ec4899', // pink
'#6366f1', // indigo
'#14b8a6', // teal
];
</content>
<parameter=filePath>
/home/mike/code/FrenoCorp/src/lib/collaboration/presence-manager.ts

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/**
* WebRTC Video Manager
* Handles P2P video connections using PeerJS
* Manages peer connections, streams, and signaling
*/
import { Peer } from 'peerjs';
import { EventEmitter } from 'events';
export type PeerConnectionState = 'disconnected' | 'connecting' | 'connected' | 'disconnecting' | 'error';
export type ConnectionQuality = 'excellent' | 'good' | 'fair' | 'poor';
export interface WebRTCVideoManagerOptions {
peerId?: string;
serverUrl?: string;
audioEnabled?: boolean;
videoEnabled?: boolean;
turnServers?: RTCIceServer[];
}
export interface PeerConnection {
peerId: string;
connection: DataConnection;
stream: MediaStream | null;
state: PeerConnectionState;
quality: ConnectionQuality;
connectedAt: Date;
}
export interface VideoManagerEvents {
'peer:connected': (peerId: string, stream: MediaStream) => void;
'peer:disconnected': (peerId: string) => void;
'peer:error': (peerId: string, error: Error) => void;
'local:stream': (stream: MediaStream) => void;
'connection:quality': (peerId: string, quality: ConnectionQuality) => void;
'state:changed': (state: PeerConnectionState) => void;
}
class DataConnection {
private peer: Peer;
private conn: any;
private stream: MediaStream | null = null;
private listeners: Map<string, Set<(...args: any[]) => void>> = new Map();
constructor(peer: Peer, conn: any) {
this.peer = peer;
this.conn = conn;
this.conn.on('stream', (stream: MediaStream) => {
this.stream = stream;
this.emit('stream', stream);
});
this.conn.on('data', (data: any) => {
this.emit('data', data);
});
this.conn.on('open', () => {
this.emit('open');
});
this.conn.on('close', () => {
this.emit('close');
});
this.conn.on('error', (error: Error) => {
this.emit('error', error);
});
}
send(data: any): void {
this.conn.send(data);
}
pushStream(stream: MediaStream): void {
this.stream = stream;
this.conn.sendStream(stream);
}
getStream(): MediaStream | null {
return this.stream;
}
close(): void {
this.conn.close();
}
on(event: string, callback: (...args: any[]) => void): void {
if (!this.listeners.has(event)) {
this.listeners.set(event, new Set());
}
this.listeners.get(event)!.add(callback);
}
off(event: string, callback: (...args: any[]) => void): void {
this.listeners.get(event)?.delete(callback);
}
private emit(event: string, ...args: any[]): void {
this.listeners.get(event)?.forEach(cb => cb(...args));
}
}
export class WebRTCVideoManager extends EventEmitter {
private peer: Peer | null = null;
private options: WebRTCVideoManagerOptions;
private connections: Map<string, DataConnection> = new Map();
private localStream: MediaStream | null = null;
private state: PeerConnectionState = 'disconnected';
private qualityMetrics: Map<string, ConnectionQuality> = new Map();
constructor(options: WebRTCVideoManagerOptions = {}) {
super();
this.options = {
peerId: options.peerId,
serverUrl: options.serverUrl || 'https://0.peerjs.com:443',
audioEnabled: options.audioEnabled ?? true,
videoEnabled: options.videoEnabled ?? true,
turnServers: options.turnServers || [
{ urls: 'stun:stun.l.google.com:19302' },
{ urls: 'stun:stun1.l.google.com:19302' },
],
};
}
async initialize(): Promise<void> {
try {
// Get local media stream
await this.acquireLocalStream();
// Initialize PeerJS
this.peer = new Peer(this.options.peerId, {
host: new URL(this.options.serverUrl).hostname,
port: new URL(this.options.serverUrl).port || 443,
path: '/webrtc',
secure: true,
config: {
iceServers: this.options.turnServers,
},
});
// Handle incoming connections
this.peer.on('connection', (conn: any) => {
const dataConn = new DataConnection(this.peer!, conn);
this.connections.set(conn.peer, dataConn);
// Send local stream to new peer
if (this.localStream) {
dataConn.pushStream(this.localStream);
}
this.emit('peer:connected', conn.peer, this.localStream!);
this.updateState('connected');
});
// Handle peer errors
this.peer.on('error', (error: any) => {
this.emit('peer:error', this.peer!.id, error);
this.updateState('error');
});
// Handle connection open
this.peer.on('open', (id: string) => {
console.log('PeerJS initialized with ID:', id);
this.updateState('connected');
});
// Handle connection close
this.peer.on('close', () => {
this.updateState('disconnected');
});
} catch (error) {
console.error('Failed to initialize WebRTC manager:', error);
this.emit('peer:error', this.options.peerId || 'unknown', error as Error);
this.updateState('error');
throw error;
}
}
async acquireLocalStream(): Promise<MediaStream> {
try {
const constraints: MediaStreamConstraints = {
audio: this.options.audioEnabled,
video: this.options.videoEnabled,
};
this.localStream = await navigator.mediaDevices.getUserMedia(constraints);
this.emit('local:stream', this.localStream);
return this.localStream;
} catch (error) {
console.error('Failed to acquire local media stream:', error);
throw error;
}
}
connectToPeer(peerId: string): DataConnection {
if (!this.peer) {
throw new Error('Peer not initialized. Call initialize() first.');
}
const conn = this.peer.connect(peerId, {
metadata: {
peerId: this.peer.id,
timestamp: Date.now(),
},
});
const dataConn = new DataConnection(this.peer, conn);
this.connections.set(peerId, dataConn);
// Send local stream
if (this.localStream) {
dataConn.pushStream(this.localStream);
}
// Monitor connection quality
dataConn.on('open', () => {
this.startQualityMonitoring(peerId, dataConn);
});
dataConn.on('close', () => {
this.qualityMetrics.delete(peerId);
this.emit('peer:disconnected', peerId);
});
return dataConn;
}
getPeerConnection(peerId: string): DataConnection | undefined {
return this.connections.get(peerId);
}
getAllConnections(): Map<string, DataConnection> {
return new Map(this.connections);
}
disconnectFromPeer(peerId: string): void {
const conn = this.connections.get(peerId);
if (conn) {
conn.close();
this.connections.delete(peerId);
this.emit('peer:disconnected', peerId);
}
}
disconnectAll(): void {
this.connections.forEach((conn, peerId) => {
conn.close();
this.emit('peer:disconnected', peerId);
});
this.connections.clear();
}
getLocalStream(): MediaStream | null {
return this.localStream;
}
toggleAudio(): void {
if (this.localStream) {
const audioTrack = this.localStream.getAudioTracks()[0];
if (audioTrack) {
audioTrack.enabled = !audioTrack.enabled;
this.options.audioEnabled = audioTrack.enabled;
console.log(`Audio ${audioTrack.enabled ? 'enabled' : 'disabled'}`);
}
}
}
toggleVideo(): void {
if (this.localStream) {
const videoTrack = this.localStream.getVideoTracks()[0];
if (videoTrack) {
videoTrack.enabled = !videoTrack.enabled;
this.options.videoEnabled = videoTrack.enabled;
console.log(`Video ${videoTrack.enabled ? 'enabled' : 'disabled'}`);
}
}
}
isAudioEnabled(): boolean {
if (this.localStream) {
const audioTrack = this.localStream.getAudioTracks()[0];
return audioTrack?.enabled ?? false;
}
return false;
}
isVideoEnabled(): boolean {
if (this.localStream) {
const videoTrack = this.localStream.getVideoTracks()[0];
return videoTrack?.enabled ?? false;
}
return false;
}
getPeerId(): string | null {
return this.peer?.id || null;
}
getState(): PeerConnectionState {
return this.state;
}
getConnectionQuality(peerId: string): ConnectionQuality {
return this.qualityMetrics.get(peerId) || 'fair';
}
private startQualityMonitoring(peerId: string, conn: DataConnection): void {
let packetLoss = 0;
let latencySamples: number[] = [];
const checkQuality = () => {
// Simple quality estimation based on connection state
if (conn) {
const quality: ConnectionQuality = 'good';
this.qualityMetrics.set(peerId, quality);
this.emit('connection:quality', peerId, quality);
}
};
// Check quality every 5 seconds
const interval = setInterval(checkQuality, 5000);
checkQuality();
// Cleanup on close
conn.on('close', () => {
clearInterval(interval);
});
}
private updateState(newState: PeerConnectionState): void {
if (this.state !== newState) {
this.state = newState;
this.emit('state:changed', newState);
}
}
destroy(): void {
this.disconnectAll();
if (this.localStream) {
this.localStream.getTracks().forEach(track => track.stop());
this.localStream = null;
}
if (this.peer) {
this.peer.destroy();
this.peer = null;
}
this.updateState('disconnected');
}
}
export default WebRTCVideoManager;