var WebpackIsomorphicToolsPlugin = require('webpack-isomorphic-tools/plugin');

// see this link for more info on what all of this means
// https://github.com/halt-hammerzeit/webpack-isomorphic-tools
module.exports = {
  // when adding "js" extension to asset types
  // and then enabling debug mode, it may cause a weird error:
  //
  // [0] npm run start-prod exited with code 1
  // Sending SIGTERM to other processes..
  //
  // debug: true,

  assets: {
    images: {
      extensions: ['jpeg', 'jpg', 'png', 'gif'],
      parser: WebpackIsomorphicToolsPlugin.url_loader_parser,
    },
    fonts: {
      extensions: ['woff', 'woff2', 'ttf', 'eot'],
      parser: WebpackIsomorphicToolsPlugin.url_loader_parser,
    },
    svg: {
      extension: 'svg',
      parser: WebpackIsomorphicToolsPlugin.url_loader_parser,
    },
    // this whole "bootstrap" asset type is only used once in development mode.
    // the only place it's used is the Html.js file
    // where a <style/> tag is created with the contents of the
    // './src/theme/bootstrap.config.js' file.
    // (the aforementioned <style/> tag can reduce the white flash
    //  when refreshing page in development mode)
    //
    // hooking into 'js' extension require()s isn't the best solution
    // and I'm leaving this comment here in case anyone finds a better idea.
    //bootstrap: {
    //  extension: 'js',
    //  include: ['./src/theme/bootstrap.config.js'],
    //  filter: function(module, regex, options, log) {
    //    function is_bootstrap_style(name) {
    //      return name.indexOf('./src/theme/bootstrap.config.js') >= 0;
    //    }
    //    if (options.development) {
    //      return is_bootstrap_style(module.name) && WebpackIsomorphicToolsPlugin.style_loader_filter(module, regex, options, log);
    //    }
    //    // no need for it in production mode
    //  },
    //  // in development mode there's webpack "style-loader",
    //  // so the module.name is not equal to module.name
    //  path: WebpackIsomorphicToolsPlugin.style_loader_path_extractor,
    //  parser: WebpackIsomorphicToolsPlugin.css_loader_parser
    //},

    style_modules: {
      extensions: ['scss'],
      filter: function(module, regex, options, log) {
        if (options.development) {
          // in development mode there's webpack "style-loader",
          // so the module.name is not equal to module.name
          return WebpackIsomorphicToolsPlugin.style_loader_filter(
            module,
            regex,
            options,
            log
          );
        } else {
          // in production mode there's no webpack "style-loader",
          // so the module.name will be equal to the asset path
          return regex.test(module.name);
        }
      },
      path: function(module, options, log) {
        if (options.development) {
          // in development mode there's webpack "style-loader",
          // so the module.name is not equal to module.name
          return WebpackIsomorphicToolsPlugin.style_loader_path_extractor(
            module,
            options,
            log
          );
        } else {
          // in production mode there's no webpack "style-loader",
          // so the module.name will be equal to the asset path
          return module.name;
        }
      },
      parser: function(module, options, log) {
        if (options.development) {
          return WebpackIsomorphicToolsPlugin.css_modules_loader_parser(
            module,
            options,
            log
          );
        } else {
          // in production mode there's Extract Text Loader which extracts CSS text away
          return module.source;
        }
      },
    },
  },
};