packages/shared/src/index.ts

// ─────────────────────────────────────────────────────────────
// @codesync/shared — Shared types and constants
// ─────────────────────────────────────────────────────────────

// User colors for cursor presence
export const USER_COLORS = [
  '#FF6B6B', '#4ECDC4', '#45B7D1', '#96CEB4',
  '#FFEAA7', '#DDA0DD', '#98D8C8', '#F7DC6F',
  '#BB8FCE', '#85C1E9', '#F8C471', '#82E0AA',
] as const;

// Rate limiting configuration
export const RATE_LIMITS = {
  AUTH: { windowMs: 15 * 60 * 1000, max: 10 },
  API: { windowMs: 60 * 1000, max: 100 },
  EXECUTION: { windowMs: 60 * 1000, max: 10 },
  AI: { windowMs: 60 * 1000, max: 20 },
  WEBSOCKET: { windowMs: 1000, max: 50 },
} as const;

// Room constraints
export const ROOM_LIMITS = {
  MAX_MEMBERS: 10,
  MAX_FILES: 20,
  MAX_FILE_SIZE: 1024 * 1024,
  MAX_MESSAGE_LENGTH: 4096,
  MAX_ROOM_NAME_LENGTH: 64,
  INVITE_CODE_LENGTH: 8,
} as const;

// Execution constraints
export const EXECUTION_LIMITS = {
  MAX_CODE_SIZE: 64 * 1024,
  MAX_TIMEOUT: 30000,
  DEFAULT_TIMEOUT: 10000,
  MAX_OUTPUT_SIZE: 1024 * 1024,
  MAX_CONCURRENT: 5,
} as const;

// Language configurations
export const LANGUAGE_CONFIG = {
  javascript: {
    name: 'JavaScript', extension: '.js', monacoId: 'javascript',
    dockerImage: 'codesync-sandbox-js', runCommand: 'node',
    timeout: 10000, memoryLimit: '128m',
  },
  typescript: {
    name: 'TypeScript', extension: '.ts', monacoId: 'typescript',
    dockerImage: 'codesync-sandbox-js', runCommand: 'npx tsx',
    timeout: 15000, memoryLimit: '128m',
  },
  python: {
    name: 'Python', extension: '.py', monacoId: 'python',
    dockerImage: 'codesync-sandbox-python', runCommand: 'python3',
    timeout: 10000, memoryLimit: '128m',
  },
  cpp: {
    name: 'C++', extension: '.cpp', monacoId: 'cpp',
    dockerImage: 'codesync-sandbox-cpp', runCommand: 'g++',
    timeout: 15000, memoryLimit: '256m',
  },
  java: {
    name: 'Java', extension: '.java', monacoId: 'java',
    dockerImage: 'codesync-sandbox-java', runCommand: 'javac',
    timeout: 20000, memoryLimit: '256m',
  },
} as const;

// ─── Shared Types ────────────────────────────────────────────

export interface User {
  id: string;
  email: string;
  name: string;
  avatar: string | null;
  provider: string;
  createdAt: string;
}

export interface AuthTokens {
  accessToken: string;
  refreshToken: string;
}

export interface Room {
  id: string;
  name: string;
  ownerId: string;
  language: string;
  isPublic: boolean;
  inviteCode: string;
  maxMembers: number;
  createdAt: string;
  updatedAt: string;
}

export interface RoomMember {
  userId: string;
  roomId: string;
  role: string;
  joinedAt: string;
  lastActive: string;
  user: User;
}

export interface RoomFile {
  id: string;
  roomId: string;
  name: string;
  path: string;
  content: string;
  language: string;
  createdAt: string;
  updatedAt: string;
}

export type ProgrammingLanguage = 'javascript' | 'typescript' | 'python' | 'cpp' | 'java';
export type RoomRole = 'owner' | 'editor' | 'viewer';
export type MessageType = 'text' | 'code' | 'file' | 'system';
export type AIAction = 'explain' | 'fix' | 'optimize' | 'comment' | 'debug';

export interface ChatMessage {
  id: string;
  content: string;
  userId: string;
  userName: string;
  userAvatar: string | null;
  roomId: string;
  type: MessageType;
  metadata?: any;
  createdAt: string;
}

export interface UserCursor {
  userId: string;
  userName: string;
  userColor: string;
  position: { lineNumber: number; column: number };
  selection?: {
    startLineNumber: number;
    startColumn: number;
    endLineNumber: number;
    endColumn: number;
  };
}

export interface UserPresence {
  userId: string;
  userName: string;
  userColor: string;
  isOnline: boolean;
  lastSeen: string;
  isTyping: boolean;
}

export interface ExecutionRequest {
  code: string;
  language: ProgrammingLanguage;
  stdin?: string;
  timeout?: number;
}

export interface ExecutionResult {
  id: string;
  stdout: string;
  stderr: string;
  exitCode: number;
  duration: number;
  memoryUsed: number;
  timedOut: boolean;
}

export interface CreateRoomPayload {
  name: string;
  language: ProgrammingLanguage;
  isPublic: boolean;
  maxMembers?: number;
}

export interface AIRequest {
  action: AIAction;
  code: string;
  language: ProgrammingLanguage;
  prompt?: string;
  error?: string;
}

export interface AIResponse {
  content: string;
  suggestions?: Array<{ description: string; code: string }>;
}

export interface AIMessage {
  id: string;
  role: 'user' | 'assistant';
  content: string;
  timestamp: string;
}

export interface WebRTCSignal {
  type: 'offer' | 'answer' | 'ice-candidate';
  from: string;
  to: string;
  payload: any;
}

export interface PeerConnection {
  peerId: string;
  peerName: string;
  isAudioEnabled: boolean;
  isVideoEnabled: boolean;
  isScreenSharing: boolean;
}

export interface DashboardStats {
  totalRooms: number;
  totalExecutions: number;
  totalCollaborationTime: number;
  recentActivity: any[];
}

export interface Snippet {
  id: string;
  userId: string;
  title: string;
  code: string;
  language: string;
  description?: string;
  isPublic: boolean;
  createdAt: string;
  updatedAt: string;
}

// Socket event interfaces
export interface ServerToClientEvents {
  'room:joined': (data: any) => void;
  'room:member-joined': (data: any) => void;
  'room:member-left': (data: any) => void;
  'doc:sync': (data: any) => void;
  'doc:state': (data: any) => void;
  'presence:update': (data: any) => void;
  'cursor:update': (data: any) => void;
  'chat:message': (data: any) => void;
  'chat:typing': (data: any) => void;
  'chat:history': (data: any) => void;
  'exec:output': (data: any) => void;
  'exec:complete': (data: any) => void;
  'exec:error': (data: any) => void;
  'webrtc:offer': (data: any) => void;
  'webrtc:answer': (data: any) => void;
  'webrtc:ice-candidate': (data: any) => void;
  'webrtc:peer-joined': (data: any) => void;
  'webrtc:peer-left': (data: any) => void;
  'error': (data: any) => void;
}

export interface ClientToServerEvents {
  'room:join': (data: any) => void;
  'room:leave': (data: any) => void;
  'doc:update': (data: any) => void;
  'doc:request-state': (data: any) => void;
  'presence:update': (data: any) => void;
  'cursor:move': (data: any) => void;
  'chat:send': (data: any) => void;
  'chat:typing': (data: any) => void;
  'chat:history': (data: any) => void;
  'exec:run': (data: any) => void;
  'exec:kill': (data: any) => void;
  'webrtc:join': () => void;
  'webrtc:leave': () => void;
  'webrtc:offer': (data: any) => void;
  'webrtc:answer': (data: any) => void;
  'webrtc:ice-candidate': (data: any) => void;
}