Cerebra Legal MCP Server

import chalk from 'chalk'; /** * Logger utility for consistent logging throughout the application */ export class Logger { private static instance: Logger; private logLevel: LogLevel; /** * Private constructor to enforce singleton pattern */ private constructor() { // Default to info level this.logLevel = LogLevel.INFO; } /** * Get the singleton instance */ public static getInstance(): Logger { if (!Logger.instance) { Logger.instance = new Logger(); } return Logger.instance; } /** * Set the log level * @param level - The log level to set */ public setLogLevel(level: LogLevel): void { this.logLevel = level; } /** * Log a debug message * @param message - The message to log * @param context - Optional context information */ public debug(message: string, context?: any): void { if (this.logLevel <= LogLevel.DEBUG) { console.error(chalk.gray(`[DEBUG] ${message}`)); if (context) { console.error(chalk.gray(JSON.stringify(context, null, 2))); } } } /** * Log an info message * @param message - The message to log * @param context - Optional context information */ public info(message: string, context?: any): void { if (this.logLevel <= LogLevel.INFO) { console.error(chalk.blue(`[INFO] ${message}`)); if (context) { console.error(chalk.blue(JSON.stringify(context, null, 2))); } } } /** * Log a warning message * @param message - The message to log * @param context - Optional context information */ public warn(message: string, context?: any): void { if (this.logLevel <= LogLevel.WARN) { console.error(chalk.yellow(`[WARN] ${message}`)); if (context) { console.error(chalk.yellow(JSON.stringify(context, null, 2))); } } } /** * Log an error message * @param message - The message to log * @param error - Optional error object * @param context - Optional context information */ public error(message: string, error?: Error, context?: any): void { if (this.logLevel <= LogLevel.ERROR) { console.error(chalk.red(`[ERROR] ${message}`)); if (error) { console.error(chalk.red(error.stack || error.message)); } if (context) { console.error(chalk.red(JSON.stringify(context, null, 2))); } } } /** * Format a thought with borders and colors * @param thought - The thought content * @param category - The thought category * @param thoughtNumber - The thought number * @param totalThoughts - The total number of thoughts * @param isRevision - Whether this is a revision * @param revisesThoughtNumber - The thought number being revised * @returns Formatted thought string */ public formatThought( thought: string, category: string, thoughtNumber: number, totalThoughts: number, isRevision?: boolean, revisesThoughtNumber?: number ): string { let prefix = ''; let context = ''; let color = chalk.blue; // Determine color and prefix based on category switch (category) { case 'ansc_contestation': color = chalk.magenta; prefix = 'ANSC Analysis'; break; case 'consumer_protection': color = chalk.green; prefix = 'Consumer Protection'; break; case 'contract_analysis': color = chalk.cyan; prefix = 'Contract Analysis'; break; case 'legal_reasoning': color = chalk.blue; prefix = 'Legal Reasoning'; break; default: color = chalk.blue; prefix = 'Thought'; } // Add revision information if applicable if (isRevision) { prefix = chalk.yellow(`${prefix} (Revision)`); context = ` (revising thought ${revisesThoughtNumber})`; } const header = `${prefix} ${thoughtNumber}/${totalThoughts}${context}`; const border = '─'.repeat(Math.max(header.length, thought.length) + 4); return ` ┌${border}┐ │ ${color(header)} │ ├${border}┤ │ ${thought.padEnd(border.length - 2)} │ └${border}┘`; } } /** * Log levels enum */ export enum LogLevel { DEBUG = 0, INFO = 1, WARN = 2, ERROR = 3 } // Export a default instance export const logger = Logger.getInstance();