'use strict';

const Benchmark = require('benchmark');
const benchmarks = require('beautify-benchmark');
const util = require('util');

const suite = new Benchmark.Suite();

function normal(text) {
  if (arguments.length === 2) {
    return util.format(text, arguments[1]);
  } else if (arguments.length === 3) {
    return util.format(text, arguments[1], arguments[2]);
  } else if (arguments.length === 4) {
    return util.format(text, arguments[1], arguments[2], arguments[3]);
  } else if (arguments.length === 5) {
    return util.format(text, arguments[1], arguments[2], arguments[3], arguments[4]);
  }
}

function apply() {
  const args = Array.prototype.slice.call(arguments);
  return util.format.apply(util, args);
}

function apply2() {
  const args = new Array(arguments.length);
  for (let i = 0, l = arguments.length; i < l; i++) {
    args[i] = arguments[i];
  }
  return util.format.apply(util, args);
}

console.log('normal(): %s', normal('this is %s.', 'string'));
console.log('apply(): %s', apply('this is %s.', 'string'));
console.log('apply2(): %s', apply2('this is %s.', 'string'));

suite

.add('normal(arg0, arg1, ...)', function() {
  normal('this is %s.', 'string');
  normal('this is %s and %s.', 'string', 'string2');
  normal('this is %s and %s and %s.', 'string', 'string2', 'string3');
  normal('this is %s and %s and %s and %s.', 'string', 'string2', 'string3', 'string4');
})
.add('function.apply(arg0, arg1, ...)', function() {
  apply('this is %s.', 'string');
  apply('this is %s and %s.', 'string', 'string2');
  apply('this is %s and %s and %s.', 'string', 'string2', 'string3');
  apply('this is %s and %s and %s and %s.', 'string', 'string2', 'string3', 'string4');
})
.add('function.apply2(arg0, arg1, ...)', function() {
  apply2('this is %s.', 'string');
  apply2('this is %s and %s.', 'string', 'string2');
  apply2('this is %s and %s and %s.', 'string', 'string2', 'string3');
  apply2('this is %s and %s and %s and %s.', 'string', 'string2', 'string3', 'string4');
})

.on('cycle', function(event) {
  benchmarks.add(event.target);
})
.on('start', function() {
  console.log('\n  dynamic arguments Benchmark\n  node version: %s, date: %s\n  Starting...',
    process.version, Date());
})
.on('complete', function done() {
  benchmarks.log();
})
.run({ async: false });

// normal(): this is string.
// apply(): this is string.
// apply2(): this is string.
//
//   dynamic arguments Benchmark
//   node version: v2.2.1, date: Sun Aug 30 2015 20:45:42 GMT+0800 (CST)
//   Starting...
//   3 tests completed.
//
//   normal(arg0, arg1, ...)          x 273,983 ops/sec ±0.80% (101 runs sampled)
//   function.apply(arg0, arg1, ...)  x 222,616 ops/sec ±0.70% (98 runs sampled)
//   function.apply2(arg0, arg1, ...) x 265,349