Browser Manager MCP Server

/** * Professional Logger Service - Enterprise Grade Logging * Implements structured logging with multiple levels and destinations */ export enum LogLevel { DEBUG = 0, INFO = 1, WARN = 2, ERROR = 3, CRITICAL = 4 } export interface LogEntry { timestamp: string; level: LogLevel; category: string; message: string; data?: any; error?: { name: string; message: string; stack?: string; }; userId?: string; sessionId?: string; } export interface LoggerConfig { level: LogLevel; enableConsole: boolean; enableStorage: boolean; maxStorageEntries: number; categories: string[]; } class Logger { private static instance: Logger; private config: LoggerConfig; private sessionId: string; private logs: LogEntry[] = []; private constructor() { this.sessionId = this.generateSessionId(); this.config = { level: LogLevel.INFO, enableConsole: true, enableStorage: true, maxStorageEntries: 1000, categories: ['websocket', 'debugger', 'ui', 'connection', 'error'] }; this.loadLogsFromStorage(); } static getInstance(): Logger { if (!Logger.instance) { Logger.instance = new Logger(); } return Logger.instance; } private generateSessionId(): string { return `session_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`; } private loadLogsFromStorage(): void { try { const stored = localStorage.getItem('extension_logs'); if (stored) { this.logs = JSON.parse(stored).slice(-this.config.maxStorageEntries); } } catch (error) { console.warn('Failed to load logs from storage:', error); } } private saveLogsToStorage(): void { if (!this.config.enableStorage) return; try { const recentLogs = this.logs.slice(-this.config.maxStorageEntries); localStorage.setItem('extension_logs', JSON.stringify(recentLogs)); } catch (error) { console.warn('Failed to save logs to storage:', error); } } private createLogEntry(level: LogLevel, category: string, message: string, data?: any, error?: Error): LogEntry { return { timestamp: new Date().toISOString(), level, category, message, data, error: error ? { name: error.name, message: error.message, stack: error.stack } : undefined, sessionId: this.sessionId }; } private log(entry: LogEntry): void { if (entry.level < this.config.level) return; this.logs.push(entry); this.saveLogsToStorage(); if (this.config.enableConsole) { const prefix = `[${entry.timestamp}] [${entry.category.toUpperCase()}]`; const args = [prefix, entry.message]; if (entry.data) args.push(entry.data); if (entry.error) args.push(`${entry.error.name}: ${entry.error.message}`); switch (entry.level) { case LogLevel.DEBUG: console.debug(...args); break; case LogLevel.INFO: console.info(...args); break; case LogLevel.WARN: console.warn(...args); break; case LogLevel.ERROR: case LogLevel.CRITICAL: console.error(...args); if (entry.error?.stack) console.error('Stack trace:', entry.error.stack); break; } } } debug(category: string, message: string, data?: any): void { const entry = this.createLogEntry(LogLevel.DEBUG, category, message, data); this.log(entry); } info(category: string, message: string, data?: any): void { const entry = this.createLogEntry(LogLevel.INFO, category, message, data); this.log(entry); } warn(category: string, message: string, data?: any): void { const entry = this.createLogEntry(LogLevel.WARN, category, message, data); this.log(entry); } error(category: string, message: string, error?: Error, data?: any): void { const entry = this.createLogEntry(LogLevel.ERROR, category, message, data, error); this.log(entry); } critical(category: string, message: string, error?: Error, data?: any): void { const entry = this.createLogEntry(LogLevel.CRITICAL, category, message, data, error); this.log(entry); } getLogs(category?: string, level?: LogLevel): LogEntry[] { return this.logs.filter(log => (!category || log.category === category) && (!level || log.level >= level) ); } clearLogs(): void { this.logs = []; localStorage.removeItem('extension_logs'); } exportLogs(): string { return JSON.stringify(this.logs, null, 2); } updateConfig(config: Partial<LoggerConfig>): void { this.config = { ...this.config, ...config }; } } export const logger = Logger.getInstance();