"use strict";

const fs = require("fs");
const path = require("path");
const benchmark = require("benchmark");
const htmlMinifier = require("html-minifier");
const minimize = require("minimize");
const hyperbuild = require("hyperbuild");

const tests_dir = path.join(__dirname, "tests");
const tests = fs.readdirSync(tests_dir).map(name => ({
  name,
  content: fs.readFileSync(path.join(tests_dir, name), "utf8"),
}));

const sizes = {};
const setSize = (program, test, result) => {
  console.log(`Received result for ${program} - ${test}`);

  if (!sizes[test]) {
    sizes[test] = {
      original: {
        result: tests.find(t => t.name === test).content.length,
      },
    };
  }
  const original = sizes[test].original.result;
  sizes[test][program] = {
    result: result,
    difference: `${((result - original) / original * 100).toFixed(2)}%`,
  };
};

const htmlMinifierSettings = {
  caseSensitive: false,
  collapseBooleanAttributes: true,
  collapseInlineTagWhitespace: true,
  collapseWhitespace: true,
  conservativeWhitespace: false,
  customEventAttributes: [],
  decodeEntities: true,
  html5: true,
  ignoreCustomComments: [],
  ignoreCustomFragments: [],
  includeAutoGeneratedTags: true,
  keepClosingSlash: false,
  minifyCSS: false,
  minifyJS: false,
  minifyURLs: false,
  preserveLineBreaks: false,
  preventAttributesEscaping: false,
  processConditionalComments: true,
  processScripts: [],
  removeAttributeQuotes: true,
  removeComments: true,
  removeEmptyAttributes: false,
  removeEmptyElements: false,
  removeOptionalTags: true,
  removeRedundantAttributes: true,
  removeScriptTypeAttributes: true,
  removeStyleLinkTypeAttributes: true,
  removeTagWhitespace: true,
  sortAttributes: true,
  sortClassName: true,
  trimCustomFragments: false,
  useShortDoctype: true,
};

new benchmark.Suite()
  .add("hyperbuild", () => {
    for (const t of tests) {
      setSize("hyperbuild", t.name, hyperbuild.minify(Buffer.from(t.content)));
    }
  })
  .add("html-minifier", () => {
    for (const t of tests) {
      setSize("html-minifier", t.name, htmlMinifier.minify(t.content, htmlMinifierSettings).length);
    }
  })
  .add("minimize", () => {
    for (const t of tests) {
      setSize("minimize", t.name, new minimize().parse(t.content).length);
    }
  })
  .on('cycle', event => {
    console.info(event.target.toString());
  })
  .on('complete', function () {
    console.info(`Fastest is ${this.filter('fastest').map('name')}`);
    Object.entries(sizes).forEach(([test, results]) => {
      console.info(test);
      console.table(results);
    });
  })
  .run({'async': true});