mirror of
https://github.com/Redocly/redoc.git
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392 lines
10 KiB
JavaScript
392 lines
10 KiB
JavaScript
#!/usr/bin/env node
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/* tslint:disable:no-implicit-dependencies */
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import * as React from 'react';
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import { renderToString } from 'react-dom/server';
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import { ServerStyleSheet } from 'styled-components';
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import { compile } from 'handlebars';
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import { createServer, IncomingMessage, ServerResponse } from 'http';
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import { dirname, join, resolve } from 'path';
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import * as zlib from 'zlib';
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// @ts-ignore
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import { createStore, loadAndBundleSpec, Redoc } from 'redoc';
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import { watch } from 'chokidar';
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import {
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createReadStream,
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existsSync,
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lstatSync,
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readFileSync,
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ReadStream,
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writeFileSync,
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} from 'fs';
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import * as mkdirp from 'mkdirp';
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import * as YargsParser from 'yargs';
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interface Options {
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ssr?: boolean;
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watch?: boolean;
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cdn?: boolean;
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output?: string;
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title?: string;
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disableGoogleFont?: boolean;
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port?: number;
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templateFileName?: string;
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templateOptions?: any;
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redocOptions?: any;
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}
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const BUNDLES_DIR = dirname(require.resolve('redoc'));
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/* tslint:disable-next-line */
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YargsParser.command(
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'serve <spec>',
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'start the server',
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yargs => {
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yargs.positional('spec', {
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describe: 'path or URL to your spec',
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});
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yargs.options('title', {
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describe: 'Page Title',
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type: 'string',
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});
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yargs.option('s', {
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alias: 'ssr',
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describe: 'Enable server-side rendering',
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type: 'boolean',
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});
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yargs.option('p', {
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alias: 'port',
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type: 'number',
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default: 8080,
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});
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yargs.option('w', {
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alias: 'watch',
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type: 'boolean',
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});
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yargs.demandOption('spec');
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return yargs;
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},
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async argv => {
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const config: Options = {
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ssr: argv.ssr as boolean,
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title: argv.title as string,
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watch: argv.watch as boolean,
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templateFileName: argv.template as string,
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templateOptions: argv.templateOptions || {},
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redocOptions: getObjectOrJSON(argv.options),
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};
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console.log(config);
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try {
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await serve(argv.port as number, argv.spec as string, config);
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} catch (e) {
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handleError(e);
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}
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},
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)
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.command(
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'bundle <spec>',
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'bundle spec into zero-dependency HTML-file',
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yargs => {
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yargs.positional('spec', {
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describe: 'path or URL to your spec',
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});
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yargs.option('o', {
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describe: 'Output file',
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alias: 'output',
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type: 'string',
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default: 'redoc-static.html',
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});
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yargs.options('title', {
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describe: 'Page Title',
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type: 'string',
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});
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yargs.options('disableGoogleFont', {
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describe: 'Disable Google Font',
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type: 'boolean',
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default: false,
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});
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yargs.option('cdn', {
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describe: 'Do not include ReDoc source code into html page, use link to CDN instead',
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type: 'boolean',
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default: false,
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});
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yargs.demandOption('spec');
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return yargs;
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},
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async (argv: any) => {
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const config = {
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ssr: true,
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output: argv.o as string,
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cdn: argv.cdn as boolean,
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title: argv.title as string,
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disableGoogleFont: argv.disableGoogleFont as boolean,
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templateFileName: argv.template as string,
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templateOptions: argv.templateOptions || {},
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redocOptions: getObjectOrJSON(argv.options),
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};
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try {
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await bundle(argv.spec, config);
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} catch (e) {
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handleError(e);
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}
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},
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)
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.demandCommand()
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.options('t', {
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alias: 'template',
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describe: 'Path to handlebars page template, see https://git.io/vh8fP for the example ',
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type: 'string',
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})
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.options('templateOptions', {
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describe:
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'Additional options that you want pass to template. Use dot notation, e.g. templateOptions.metaDescription',
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})
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.options('options', {
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describe: 'ReDoc options, use dot notation, e.g. options.nativeScrollbars',
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}).argv;
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async function serve(port: number, pathToSpec: string, options: Options = {}) {
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let spec = await loadAndBundleSpec(pathToSpec);
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let pageHTML = await getPageHTML(spec, pathToSpec, options);
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const server = createServer((request, response) => {
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console.time('GET ' + request.url);
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if (request.url === '/redoc.standalone.js') {
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respondWithGzip(
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createReadStream(join(BUNDLES_DIR, 'redoc.standalone.js'), 'utf8'),
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request,
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response,
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{
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'Content-Type': 'application/javascript',
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},
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);
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} else if (request.url === '/') {
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respondWithGzip(pageHTML, request, response, {
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'Content-Type': 'text/html',
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});
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} else if (request.url === '/spec.json') {
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const specStr = JSON.stringify(spec, null, 2);
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respondWithGzip(specStr, request, response, {
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'Content-Type': 'application/json',
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});
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} else {
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response.writeHead(404);
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response.write('Not found');
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response.end();
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}
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console.timeEnd('GET ' + request.url);
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});
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console.log();
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server.listen(port, () => console.log(`Server started: http://127.0.0.1:${port}`));
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if (options.watch && existsSync(pathToSpec)) {
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const pathToSpecDirectory = resolve(dirname(pathToSpec));
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const watchOptions = {
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ignored: [/(^|[\/\\])\../, /___jb_[a-z]+___$/],
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ignoreInitial: true,
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};
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const watcher = watch(pathToSpecDirectory, watchOptions);
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const log = console.log.bind(console);
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const handlePath = async _path => {
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try {
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spec = await loadAndBundleSpec(pathToSpec);
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pageHTML = await getPageHTML(spec, pathToSpec, options);
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log('Updated successfully');
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} catch (e) {
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console.error('Error while updating: ', e.message);
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}
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};
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watcher
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.on('change', async path => {
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log(`${path} changed, updating docs`);
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handlePath(path);
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})
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.on('add', async path => {
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log(`File ${path} added, updating docs`);
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handlePath(path);
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})
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.on('addDir', path => {
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log(`↗ Directory ${path} added. Files in here will trigger reload.`);
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})
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.on('error', error => console.error(`Watcher error: ${error}`))
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.on('ready', () => log(`👀 Watching ${pathToSpecDirectory} for changes...`));
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}
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}
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async function bundle(pathToSpec, options: Options = {}) {
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const start = Date.now();
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const spec = await loadAndBundleSpec(pathToSpec);
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const pageHTML = await getPageHTML(spec, pathToSpec, { ...options, ssr: true });
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mkdirp.sync(dirname(options.output!));
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writeFileSync(options.output!, pageHTML);
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const sizeInKiB = Math.ceil(Buffer.byteLength(pageHTML) / 1024);
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const time = Date.now() - start;
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console.log(
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`\n🎉 bundled successfully in: ${options.output!} (${sizeInKiB} KiB) [⏱ ${time / 1000}s]`,
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);
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}
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async function getPageHTML(
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spec: any,
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pathToSpec: string,
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{
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ssr,
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cdn,
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title,
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disableGoogleFont,
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templateFileName,
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templateOptions,
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redocOptions = {},
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}: Options,
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) {
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let html;
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let css;
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let state;
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let redocStandaloneSrc;
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if (ssr) {
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console.log('Prerendering docs');
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const specUrl = redocOptions.specUrl || (isURL(pathToSpec) ? pathToSpec : undefined);
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const store = await createStore(spec, specUrl, redocOptions);
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const sheet = new ServerStyleSheet();
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html = renderToString(sheet.collectStyles(React.createElement(Redoc, { store })));
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css = sheet.getStyleTags();
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state = await store.toJS();
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if (!cdn) {
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redocStandaloneSrc = readFileSync(join(BUNDLES_DIR, 'redoc.standalone.js'));
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}
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}
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templateFileName = templateFileName ? templateFileName : join(__dirname, './template.hbs');
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const template = compile(readFileSync(templateFileName).toString());
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return template({
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redocHTML: `
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<div id="redoc">${(ssr && html) || ''}</div>
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<script>
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${(ssr && `const __redoc_state = ${sanitizeJSONString(JSON.stringify(state))};`) || ''}
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var container = document.getElementById('redoc');
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Redoc.${
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ssr
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? 'hydrate(__redoc_state, container);'
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: `init("spec.json", ${JSON.stringify(redocOptions)}, container)`
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};
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</script>`,
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redocHead: ssr
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? (cdn
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? '<script src="https://unpkg.com/redoc@next/bundles/redoc.standalone.js"></script>'
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: `<script>${redocStandaloneSrc}</script>`) + css
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: '<script src="redoc.standalone.js"></script>',
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title: title || spec.info.title || 'ReDoc documentation',
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disableGoogleFont,
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templateOptions,
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});
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}
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// credits: https://stackoverflow.com/a/9238214/1749888
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function respondWithGzip(
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contents: string | ReadStream,
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request: IncomingMessage,
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response: ServerResponse,
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headers = {},
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) {
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let compressedStream;
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const acceptEncoding = (request.headers['accept-encoding'] as string) || '';
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if (acceptEncoding.match(/\bdeflate\b/)) {
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response.writeHead(200, { ...headers, 'content-encoding': 'deflate' });
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compressedStream = zlib.createDeflate();
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} else if (acceptEncoding.match(/\bgzip\b/)) {
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response.writeHead(200, { ...headers, 'content-encoding': 'gzip' });
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compressedStream = zlib.createGzip();
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} else {
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response.writeHead(200, headers);
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if (typeof contents === 'string') {
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response.write(contents);
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response.end();
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} else {
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contents.pipe(response);
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}
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return;
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}
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if (typeof contents === 'string') {
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compressedStream.write(contents);
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compressedStream.pipe(response);
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compressedStream.end();
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return;
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} else {
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contents.pipe(compressedStream).pipe(response);
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}
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}
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function isURL(str: string): boolean {
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return /^(https?:)\/\//m.test(str);
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}
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function sanitizeJSONString(str: string) {
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return escapeClosingScriptTag(escapeUnicode(str));
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}
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// see http://www.thespanner.co.uk/2011/07/25/the-json-specification-is-now-wrong/
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function escapeClosingScriptTag(str) {
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return str.replace(/<\/script>/g, '<\\/script>');
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}
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// see http://www.thespanner.co.uk/2011/07/25/the-json-specification-is-now-wrong/
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function escapeUnicode(str) {
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return str.replace(/\u2028|\u2029/g, m => '\\u202' + (m === '\u2028' ? '8' : '9'));
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}
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function handleError(error: Error) {
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console.error(error.stack);
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process.exit(1);
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}
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function getObjectOrJSON(options) {
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switch (typeof options) {
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case 'object':
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return options;
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case 'string':
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try {
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if (existsSync(options) && lstatSync(options).isFile()) {
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return JSON.parse(readFileSync(options, 'utf-8'));
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} else {
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return JSON.parse(options);
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}
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} catch (e) {
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console.log(
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`Encountered error:\n\n${options}\n\nis neither a file with a valid JSON object neither a stringified JSON object.`,
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);
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handleError(e);
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}
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default:
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return {};
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}
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}
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