'use strict';

var toJSON = require('../util/to_json');

var Logging = {
  LOG_LEVELS: {
    fatal:  4,
    error:  3,
    warn:   2,
    info:   1,
    debug:  0
  },

  writeLog: function(messageArgs, level) {
    var logger = Logging.logger || (Logging.wrapper || Logging).logger;
    if (!logger) return;

    var args   = Array.prototype.slice.apply(messageArgs),
        banner = '[Faye',
        klass  = this.className,

        message = args.shift().replace(/\?/g, function() {
          try {
            return toJSON(args.shift());
          } catch (error) {
            return '[Object]';
          }
        });

    if (klass) banner += '.' + klass;
    banner += '] ';

    if (typeof logger[level] === 'function')
      logger[level](banner + message);
    else if (typeof logger === 'function')
      logger(banner + message);
  }
};

for (var key in Logging.LOG_LEVELS)
  (function(level) {
    Logging[level] = function() {
      this.writeLog(arguments, level);
    };
  })(key);

module.exports = Logging;