#!/usr/bin/env node

var d3 = require("../../");

var formatNumber = d3.format(".3s");

// Returns the time required to construct a string interpolator
// for two strings with n numbers, separated by commas,
// with probability p that the corresponding numbers in a & b are different.
// The test is run k times, and the mean result is returned.
function observeConstruction(n, p, k) {
  if (arguments.length < 3) k = 1;
  for (var i = 0, sum = 0; i < k; ++i) {
    var a = d3.range(n).map(function() { return Math.random() * 1000; }),
        b = d3.range(n).map(function(i) { return Math.random() < p ? Math.random() * 1000 : a[i]; });
    var start = process.hrtime();
    d3.interpolateString(a, b);
    var elapsed = process.hrtime(start);
    sum += elapsed[0] + elapsed[1] / 1e9;
    process.stdout.write(".");
  }
  console.log("");
  return sum / k;
}

console.log(formatNumber(observeConstruction(  12000, 0.00, 40)) + "s\tn=12,000\tp=0");
console.log(formatNumber(observeConstruction(  12000, 0.50, 40)) + "s\tn=12,000\tp=.5");
// console.log(formatNumber(observeConstruction(  12000, 0.93, 40)) + "s\tn=12,000\tp=.93");
console.log(formatNumber(observeConstruction(  12000, 1.00, 40)) + "s\tn=12,000\tp=1");
console.log(formatNumber(observeConstruction(  60000, 0.00, 20)) + "s\tn=60,000\tp=0");
console.log(formatNumber(observeConstruction(  60000, 0.50, 20)) + "s\tn=60,000\tp=.5");
// console.log(formatNumber(observeConstruction(  60000, 0.93, 20)) + "s\tn=60,000\tp=.93");
console.log(formatNumber(observeConstruction(  60000, 1.00, 20)) + "s\tn=60,000\tp=1");
console.log(formatNumber(observeConstruction( 300000, 0.00, 10)) + "s\tn=300,000\tp=0");
console.log(formatNumber(observeConstruction( 300000, 0.50, 10)) + "s\tn=300,000\tp=.5");
// console.log(formatNumber(observeConstruction( 300000, 0.93, 10)) + "s\tn=300,000\tp=.93");
console.log(formatNumber(observeConstruction( 300000, 1.00, 10)) + "s\tn=300,000\tp=1");
console.log(formatNumber(observeConstruction(1500000, 0.00, 4)) + "s\tn=1,500,000\tp=0");
console.log(formatNumber(observeConstruction(1500000, 0.50, 4)) + "s\tn=1,500,000\tp=.5");
// console.log(formatNumber(observeConstruction(1500000, 0.93, 4)) + "s\tn=1,500,000\tp=.93");
console.log(formatNumber(observeConstruction(1500000, 1.00, 4)) + "s\tn=1,500,000\tp=1");