ffrgb / meshviewer

const fs = require('fs');

// stringify functions https://gist.github.com/cowboy/3749767

var stringify = function (obj) {

  var placeholder = '____PLACEHOLDER____';

  var fns = [];

  var json = JSON.stringify(obj, function (key, value) {

    if (typeof value === 'function') {

      fns.push(value);

      return placeholder;

    }

    return value;

  }, 2);

  json = json.replace(new RegExp('"' + placeholder + '"', 'g'), function () {

    return fns.shift();

  });

  return json;

};

module.exports = function (gulp, plugins, config, env) {

  return function html() {

    return gulp.src(env.production() ? config.build + '/*.html' : 'html/*.html')

      .pipe(plugins.realFavicon.injectFaviconMarkups(JSON.parse(fs.readFileSync(config.faviconData)).favicon.html_code))

      .pipe(env.production(plugins.inlineSource({ compress: false })))

      .pipe(plugins.inject(gulp.src(['config.js']), {

        removeTags: true,

        starttag: '<!-- inject:config -->',

        transform: function () {

          delete require.cache[require.resolve('../../config.default')];

          delete require.cache[require.resolve('../../config')];

          var buildConfig = Object.assign({}, require('../../config.default')(), require('../../config')());

          return '<title>' + buildConfig.siteName + ' - loading...</title>' +

            '<script>window.config =' +

            stringify(buildConfig)

              .replace('<!-- inject:cache-breaker -->',

                Math.random().toString(12).substring(7)) +

            ';</script>';

        }

      }))

      .pipe(plugins.inject(gulp.src(['config.js']), {

        removeTags: true,

        starttag: '<!-- inject:title -->',

        transform: function () {

          delete require.cache[require.resolve('../../config.default')];

          delete require.cache[require.resolve('../../config')];

          var buildConfig = Object.assign({}, require('../../config.default')(), require('../../config')());

          return buildConfig.siteName;

        }

      }))

      .pipe(plugins.cacheBust({

        type: 'timestamp'

      }))

      .pipe(plugins.htmlmin({

        removeComments: true,

        collapseWhitespace: true,

        minifyJS: true

      }))

      .pipe(gulp.dest(config.build));

  };

};