/
index.js
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/
index.js
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/**
* Copyright 2018 The AMP HTML Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
const BBPromise = require('bluebird');
const bundler = require('./bundler');
const fs = BBPromise.promisifyAll(require('fs'));
const {
getListing,
isMainPageFromUrl,
formatBasepath,
} = require('./util/listing');
const {handleApiRequest} = require('./api/api');
const {join} = require('path');
const {renderTemplate} = require('./template');
const pc = process;
// JS Component
const mainComponent = join(__dirname, '/components/main.js');
// CSS
const mainCssFile = join(__dirname, '/main.css');
let shouldCache = true;
function setCacheStatus(cacheStatus) {
shouldCache = cacheStatus;
}
let mainBundleCache;
async function bundleMain() {
if (shouldCache && mainBundleCache) {
return mainBundleCache;
}
const bundle = await bundler.bundleComponent(mainComponent);
if (shouldCache) {
mainBundleCache = bundle;
}
return bundle;
}
function serveIndex({root, mapBasepath}) {
const mapBasepathOrPassthru = mapBasepath || (url => url);
return (req, res, next) => {
if (!root) {
res.status(500);
res.end('Misconfigured: missing `root`.');
return;
}
return (async() => {
if (req.path.startsWith('/dashboard/api')) {
handleApiRequest(root, req, res, next);
return;
}
const isMainPage = isMainPageFromUrl(req.url);
const basepath = mapBasepathOrPassthru(req.url);
const fileSet = await getListing(root, basepath);
if (fileSet == null) {
next();
return;
}
const css = (await fs.readFileAsync(mainCssFile)).toString();
const serveMode = pc.env.SERVE_MODE || 'default';
const renderedHtml = renderTemplate({
basepath: formatBasepath(basepath),
fileSet,
isMainPage,
serveMode,
css,
});
res.end(renderedHtml);
return renderedHtml; // for testing
})();
};
}
// Promises to run before serving
async function beforeServeTasks() {
if (shouldCache) {
await bundleMain();
}
}
module.exports = {
setCacheStatus,
serveIndex,
beforeServeTasks,
};