import { Injectable, LoggerService } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { Logger, createLogger, format, transports } from 'winston';

enum WinstonLogLevel {
  INFO = 'info',
  ERROR = 'error',
  WARN = 'WARN',
  HTTP = 'HTTP',
  VERBOSE = 'verbose',
  DEBUG = 'debug',
  SILLY = 'silly',
}

@Injectable()
export default class AppLogger implements LoggerService {
  public logger: Logger;
  constructor(config: ConfigService) {
    const { combine, timestamp, label, printf } = format;
    const customLoggerFormat = printf(
      ({ level, message, Label, Timestamp }: { level: string; message: string; Label: string; Timestamp: string }) => {
        return `${Timestamp} [${Label}] ${level}: ${message}`;
      }
    );
    this.logger = createLogger({
      format: combine(label({ label: config.get('app.name') }), timestamp(), customLoggerFormat),
      transports: [new transports.Console(), new transports.File({ filename: config.get('app.logFileName') })],
    });
  }

  log(message: any) {
    this.logger.log(WinstonLogLevel.INFO, message);
  }
  error(message: any) {
    this.logger.log(WinstonLogLevel.ERROR, message);
  }
  warn(message: any) {
    this.logger.log(WinstonLogLevel.WARN, message);
  }
  debug?(message: any) {
    this.logger.log(WinstonLogLevel.DEBUG, message);
  }
  verbose?(message: any) {
    this.logger.log(WinstonLogLevel.VERBOSE, message);
  }
}