'use strict';

const { settings } = require('./settings');

const LEVELS = { error: 0, warn: 1, info: 2, debug: 3 };

function redact(value) {
  let text = typeof value === 'string' ? value : String(value);
  if (settings.xtreamPassword) {
    text = text.split(settings.xtreamPassword).join('***');
  }
  if (settings.xtreamUsername && settings.xtreamUsername.length >= 4) {
    text = text.split(settings.xtreamUsername).join('***');
  }
  text = text.replace(/([?&](?:username|password)=)[^&\s]+/gi, '$1***');
  text = text.replace(/(\/live\/)[^/\s]+\/[^/\s]+/gi, '$1***/***');
  return text;
}

function emit(level, args) {
  if ((LEVELS[level] ?? 2) > (LEVELS[settings.logLevel] ?? 2)) return;
  const line = args.map(redact).join(' ');
  const stamp = new Date().toISOString();
  process.stdout.write(`${stamp} [${level.toUpperCase()}] ${line}\n`);
}

module.exports = {
  debug: (...args) => emit('debug', args),
  info: (...args) => emit('info', args),
  warn: (...args) => emit('warn', args),
  error: (...args) => emit('error', args),
  redact,
};