#!/usr/bin/env node

/*! Copyright Twitter Inc. and other contributors. Licensed under MIT *//*
    https://github.com/twitter/twemoji/blob/gh-pages/LICENSE
*/

// dependencies
var fs = require('fs');
var path = require('path');
var { parse } = require('twemoji-parser');
var Utils = require('./utils');


function file(which) {
  return path.join(__dirname, '..', which);
}

function distFile(...which) {
  return path.join(__dirname, '..', 'dist', ...which);
}

fs.readdir(file('assets/ai'), function (err, files) {
  var page = fs.readFileSync(file('src/templates/preview.html')).toString().replace(
    '{{emoji-list}}',
    '<li>' + files.map(function (filename) {
      var codepoints = filename.replace('.ai', '').split('-');
      var emoji = codepoints.map(function(codepoint) {
        return Utils.fromCodePoint(codepoint);
      }).join('');
      if (parse(`${emoji}\ufe0f`).length === 1) {
        codepoints.push('fe0f');
      }
      return codepoints.map(function (codepoint) {
        return '&#x' + codepoint.toUpperCase() + ';';
      }).join('');
    }).join('</li>\n      <li>')+ '</li>'
  );
  fs.writeFileSync(
    distFile('preview.html'),
    page.replace(
      '{{emoji-options}}',
      JSON.stringify({
        size: 72
      })
    )
  );
  fs.writeFileSync(
    distFile('preview-svg.html'),
    page.replace(
      '{{emoji-options}}',
      JSON.stringify({
        folder: 'svg',
        ext: '.svg',
        base: ''
      })
    )
  );
});