import { createLogger, format, transports } from 'winston';

export type LoggerLevel = 'error' | 'warn' | 'info' | 'http' | 'verbose' | 'debug' | 'silly'

export function generateLoggerOptions(level: LoggerLevel, label: string = '') {
  let readableFormat: any;

  if (label) {
    readableFormat = format.printf(({ level, message, timestamp, label }) => {
      return `[${timestamp} ${level}] - ${label}: ${message}`;
    });
  } else {
    readableFormat = format.printf(({ level, message, timestamp }) => {
      return `[${timestamp} ${level}]: ${message}`;
    });
  }

  return {
    level,
    format: label ? format.combine(
      format.timestamp({
        format: 'YYYY-MM-DD HH:mm:ss:ms'
      }),
      format.label({ label }),
      format.errors({ stack: true }),
      readableFormat
    ) : format.combine(
      format.timestamp({
        format: 'YYYY-MM-DD HH:mm:ss:ms'
      }),
      format.errors({ stack: true }),
      readableFormat
    ),
    exitOnError: false,
    transports: [
      new (transports.Console)({
        format: format.combine(
          format.colorize(),
          readableFormat
        )
      }),
    ]
  }
}

export function getLogger(level: LoggerLevel, label: string = '') {
  return createLogger(generateLoggerOptions(level, label));
}