leafjs/leaf

"use strict";

var ms = require('ms');

var response = exports;

// should this be an accessor? hmmm...
response.cc =
  response.cacheControl = function(maxage) {
    if (maxage === false) {
      this.set('Cache-Control', 'private, no-cache');
      return this;
    }
    if (typeof maxage === 'string') {
      var tmp = ms(maxage);
      if (tmp) maxage = tmp
    }
    if (typeof maxage === 'number') {
      maxage = Math.round(maxage / 1000);
      this.set('Cache-Control', 'public, max-age=' + maxage);
    } else if (typeof maxage === 'string') {
      this.set('Cache-Control', maxage);
    } else {
      throw new Error('invalid cache control value: ' + maxage);
    }
    return this;
  };