/**
 * Logger utility for VC-SYS CLI
 */
import chalk from 'chalk';

export enum LogLevel {
  DEBUG = 0,
  INFO = 1,
  WARN = 2,
  ERROR = 3
}

export class Logger {
  private context: string;
  private level: LogLevel;

  constructor(context: string, level: LogLevel = LogLevel.INFO) {
    this.context = context;
    this.level = level;
  }

  debug(message: string, data?: any): void {
    if (this.level <= LogLevel.DEBUG) {
      const timestamp = new Date().toISOString();
      console.log(chalk.gray(`[${timestamp}] [DEBUG] [${this.context}] ${message}`));
      if (data) {
        console.log(chalk.gray(JSON.stringify(data, null, 2)));
      }
    }
  }

  info(message: string, data?: any): void {
    if (this.level <= LogLevel.INFO) {
      const timestamp = new Date().toISOString();
      console.log(chalk.blue(`[${timestamp}] [INFO] [${this.context}] ${message}`));
      if (data) {
        console.log(chalk.gray(JSON.stringify(data, null, 2)));
      }
    }
  }

  warn(message: string, data?: any): void {
    if (this.level <= LogLevel.WARN) {
      const timestamp = new Date().toISOString();
      console.warn(chalk.yellow(`[${timestamp}] [WARN] [${this.context}] ${message}`));
      if (data) {
        console.warn(chalk.gray(JSON.stringify(data, null, 2)));
      }
    }
  }

  error(message: string, error?: any): void {
    if (this.level <= LogLevel.ERROR) {
      const timestamp = new Date().toISOString();
      console.error(chalk.red(`[${timestamp}] [ERROR] [${this.context}] ${message}`));
      if (error) {
        if (error instanceof Error) {
          console.error(chalk.red(error.stack));
        } else {
          console.error(chalk.red(JSON.stringify(error, null, 2)));
        }
      }
    }
  }

  setLevel(level: LogLevel): void {
    this.level = level;
  }
}