Turn into an Express server
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GPG Key ID:
AE3FBD02DC583ABB
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@ -0,0 +1,18 @@
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import express from 'express';
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import path from 'path';
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import cookieParser from 'cookie-parser';
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import logger from 'morgan';
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import { fileURLToPath } from 'url';
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const thisdir = path.dirname(fileURLToPath(import.meta.url));
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const app = express();
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export default app;
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app.use(logger('dev'));
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app.use(express.json());
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app.use(express.urlencoded({ extended: false }));
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app.use(cookieParser());
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app.use(express.static(path.join(thisdir, 'public')));
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import mazes from './routes/mazes.mjs';
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app.use('/mazes', mazes);
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import http from 'http';
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import debug from 'debug';
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const log = debug('youtube-maze:server');
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/**
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* Normalize a port into a number, string, or false.
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*/
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const normalizePort = val =>
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{
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const port = parseInt(val, 10);
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// Named pipe
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if (isNaN(port))
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{
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return val;
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}
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// Port number
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if (port >= 0)
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{
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return port;
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}
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return false;
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};
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// Instantiate app
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import app from '../app.mjs';
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const port = normalizePort(process.env.PORT || '3000');
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app.set('port', port);
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// Create HTTP server
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const server = http.createServer(app);
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server.listen(port);
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server.keepAliveTimeout = 60000;
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server.on('error', error => {
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if (error.syscall !== 'listen')
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{
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throw error;
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}
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const bind = typeof port === 'string' ? `Pipe ${port}` : `Port ${port}`;
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// Handle specific listen errors with friendly messages
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switch (error.code)
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{
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case 'EACCES':
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console.error(`${bind} requires elevated privileges`);
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process.exit(1);
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case 'EADDRINUSE':
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console.error(`${bind} is already in use`);
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process.exit(1);
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default:
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throw error;
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}
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});
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server.on('listening', () => {
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const addr = server.address();
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const bind = typeof addr === 'string'
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? `pipe ${addr}`
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: `port ${addr.port}`;
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log(`Listening on ${bind}`);
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});
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@ -1,44 +0,0 @@
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'use strict';
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import util from 'util';
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const YOUTUBE_WATCH = 'https://youtu.be/%s';
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const GRAPH_NODE = ' "%s" [label="%s", URL="%s", fontcolor=blue]';
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const GRAPH_LINK = ' "%s" -> "%s"';
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/**
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* Escape double quotes in a string.
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*/
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const escapeQuotes = str => str.replace(/"/g, '\\"');
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/**
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* Convert a graph of videos to the DOT format.
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*
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* @param nodes Nodes of the graph.
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* @param next For each node, list of next neighbors.
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* @param [title=identity] Function giving the name of each node.
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* @param [url=none] Function given the URL of each node, or an empty string
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* if a node has no URL.
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* @return DOT representation of the graph.
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*/
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export const graphToDOT = (nodes, next) =>
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{
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// Convert nodes
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const nodesStr = Object.entries(nodes).map(([id, {title}]) =>
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{
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const url = util.format(YOUTUBE_WATCH, id);
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return util.format(GRAPH_NODE, id, escapeQuotes(title), url);
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}).join('\n');
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// Convert edges
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const nextStr = Object.entries(next).map(([id, neighbors]) =>
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Array.from(neighbors)
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.map(neighbor => util.format(GRAPH_LINK, id, neighbor))
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.join('\n')
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).join('\n');
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return `digraph youtube {
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${nodesStr}
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${nextStr}
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}`;
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};
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import fs from 'fs';
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import util from 'util';
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import * as api from './api.mjs';
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import {graphToDOT} from './graph.mjs';
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// Fetch the output path from command line
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if (process.argv.length !== 4)
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{
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console.error(`Usage: ${process.argv[1]} ROOT DEST
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Explore videos linked from ROOT and write the resulting graph to DEST.`);
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process.exit(1);
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}
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const root = process.argv[2];
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const dest = process.argv[3];
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// Store metadata about each visited video
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const videosNodes = Object.create(null);
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// List of videos linked from each video either through a card or an
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// endscreen item
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const nextVideos = Object.create(null);
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/**
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* Recursively explore a video and the video linked from it to fill
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* the video graph.
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*
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* @param videoId Source video identifier.
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*/
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const exploreVideo = async videoId =>
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{
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// Make sure we don’t explore the same video twice
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if (videoId in videosNodes)
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{
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return Promise.resolve();
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}
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videosNodes[videoId] = {};
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const playerConfig = await api.getPlayerConfig(videoId);
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videosNodes[videoId] = api.getVideoMeta(playerConfig);
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nextVideos[videoId] = new Set();
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// Add links between this video and the linked ones
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api.getEndScreenVideos(playerConfig)
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.forEach(nextId => nextVideos[videoId].add(nextId));
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api.getCardVideos(playerConfig)
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.forEach(nextId => nextVideos[videoId].add(nextId));
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// Recurse on linked videos
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return Promise.all(
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Array.from(nextVideos[videoId])
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.map(id => exploreVideo(id))
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);
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};
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console.log('Starting to explore!');
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exploreVideo(root).then(() =>
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{
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fs.writeFileSync(dest, graphToDOT(videosNodes, nextVideos));
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console.log(`Finished. Result in ${dest}`);
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}).catch(console.error);
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import debug from 'debug';
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import util from 'util';
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import util from 'util';
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import fetch from 'node-fetch';
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import fetch from 'node-fetch';
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const YOUTUBE_BASE = 'https://www.youtube.com/%s';
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import { WATCH_BASE } from './util.mjs';
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const WATCH_BASE = util.format(YOUTUBE_BASE, 'watch?v=%s');
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import { TemporaryError } from './retry.mjs';
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const PLAYER_CONFIG_REGEX = /ytplayer\.config = (\{.*?\});/;
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/**
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const log = debug('youtube-maze:api');
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* Make a promise that is resolved in a point in the future.
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const PLAYER_RESP_REGEX = /window\["ytInitialPlayerResponse"\] = (\{.*?\});/;
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*
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const PLAYER_CONFIG_REGEX = /ytplayer\.config = (\{.*?\});/;
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* @param Number time Time to wait before resolving the promise (ms).
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* @return null
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*/
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const sleep = time => new Promise(resolve => setTimeout(resolve, time));
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/**
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/**
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* Fetch the `ytplayer.config` object for a YouTube video.
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* Fetch the `ytplayer.config` object for a YouTube video.
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*
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*
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* @async
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* @async
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* @param String videoId Identifier of the video to fetch.
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* @param String videoId Identifier of the video to fetch.
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* @param Number retries Allowed number of retries after fetch errors.
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* @param Number cooldown Time to wait before retrying (ms).
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* @return Object The player configuration object.
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* @return Object The player configuration object.
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*/
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*/
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export const getPlayerConfig = async (videoId, retries = 3, cooldown = 1000) =>
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export const getPlayerConfig = async (videoId) =>
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{
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{
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const url = util.format(WATCH_BASE, videoId);
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const url = util.format(WATCH_BASE, encodeURIComponent(videoId));
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log(`Fetching ${videoId} (${url})`);
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const res = await fetch(url);
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const res = await fetch(url);
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debugger;
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const body = await res.text();
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const body = await res.text();
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// Look for the initial player response object to check whether the
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// video was found
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const responseSearch = body.match(PLAYER_RESP_REGEX);
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if (responseSearch === null)
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{
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throw new TemporaryError(`Invalid YouTube response for video ${videoId}`);
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}
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const response = JSON.parse(responseSearch[1]);
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if (response.playabilityStatus.status !== 'OK')
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{
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throw new Error(`Video ${videoId} is not available; \
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status: ${response.playabilityStatus.status}; \
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reason: "${response.playabilityStatus.reason}"`);
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}
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// Look for the definition of ytplayer.config and unserialize it
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// Look for the definition of ytplayer.config and unserialize it
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const configSearch = body.match(PLAYER_CONFIG_REGEX);
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const configSearch = body.match(PLAYER_CONFIG_REGEX);
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if (configSearch === null)
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if (configSearch === null)
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{
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{
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if (retries > 0)
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throw new TemporaryError(`Unable to find player for video ${videoId}`);
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{
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console.info(`Error while fetching ${videoId}, retrying in ${cooldown} ms`);
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await sleep(cooldown);
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return getPlayerConfig(videoId, retries - 1, cooldown * 2);
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}
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else
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{
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throw new Error('Unable to find player configuration');
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}
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}
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}
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const config = JSON.parse(configSearch[1]);
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const config = JSON.parse(configSearch[1]);
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config.args.player_response = JSON.parse(config.args.player_response);
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config.args.player_response = JSON.parse(config.args.player_response);
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const actualId = config.args.player_response.videoDetails.videoId;
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if (videoId !== actualId)
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{
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throw new Error(`Video ${videoId} has actual id ${actualId}`);
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}
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return config;
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return config;
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};
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};
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/**
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/**
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* Get metadata about a YouTube video.
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* Get metadata about a YouTube video.
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*
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*
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* @param playerConfig The `ytplayer.config` object corresponding to the source
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* @param config The `ytplayer.config` object corresponding to the source
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* YouTube video, as obtained from `getPlayerConfig`.
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* YouTube video, as obtained from `getPlayerConfig`.
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* @return Object containing the video metadata.
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* @return Object containing the video metadata.
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*/
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*/
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export const getVideoMeta = playerConfig => ({
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export const getVideoMeta = config => ({
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videoId: playerConfig.args.player_response.videoDetails.videoId,
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videoId: config.args.player_response.videoDetails.videoId,
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title: playerConfig.args.player_response.videoDetails.title,
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title: config.args.player_response.videoDetails.title,
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});
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});
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/**
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/**
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* Find videos linked from the endscreen of a YouTube video.
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* Find videos linked from the endscreen of a YouTube video.
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*
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*
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* @param playerConfig The `ytplayer.config` object corresponding to the source
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* @param config The `ytplayer.config` object corresponding to the source
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* YouTube video, as obtained from `getPlayerConfig`.
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* YouTube video, as obtained from `getPlayerConfig`.
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* @return List of identifiers of linked videos.
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* @return List of identifiers of linked videos.
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*/
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*/
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export const getEndScreenVideos = playerConfig =>
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export const getEndScreenVideos = config =>
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{
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{
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const response = playerConfig.args.player_response;
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const response = config.args.player_response;
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if (!('endscreen' in response))
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if (!('endscreen' in response))
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{
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{
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@ -87,13 +100,13 @@ export const getEndScreenVideos = playerConfig =>
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/**
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/**
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* Find videos linked from as cards from a YouTube video.
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* Find videos linked from as cards from a YouTube video.
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*
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*
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* @param playerConfig The `ytplayer.config` object corresponding to the source
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* @param config The `ytplayer.config` object corresponding to the source
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* YouTube video, as obtained from `getPlayerConfig`.
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* YouTube video, as obtained from `getPlayerConfig`.
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* @return List of identifiers of linked videos.
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* @return List of identifiers of linked videos.
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*/
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*/
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export const getCardVideos = playerConfig =>
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export const getCardVideos = config =>
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{
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{
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const response = playerConfig.args.player_response;
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const response = config.args.player_response;
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if (!('cards' in response))
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if (!('cards' in response))
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{
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{
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import util from 'util';
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import * as api from './api.mjs';
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import { WATCH_BASE, PromiseQueue, escapeQuotes } from './util.mjs';
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import { retryable } from '../lib/retry.mjs';
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const GRAPH_NODE = ' "%s" [label="%s", URL="%s", fontcolor=blue]';
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const GRAPH_LINK = ' "%s" -> "%s"';
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const retryPlayerConfig = retryable(api.getPlayerConfig);
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/**
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* Explore the video graph starting from the given root.
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*
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* @async
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* @param string videoId Source video identifier.
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* @return Array.<Object, Object> Nodes and set of neighbors of each node.
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*/
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export const exploreVideos = async videoId =>
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{
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// Store metadata about each visited video
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const videosNodes = Object.create(null);
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videosNodes[videoId] = {};
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// List of videos linked from each video either through a card or an
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// endscreen item
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const nextVideos = Object.create(null);
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nextVideos[videoId] = new Set();
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// Pending video requests
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const queue = new PromiseQueue();
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queue.add(retryPlayerConfig(videoId));
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while (!queue.empty())
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{
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const config = await queue.next();
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const meta = api.getVideoMeta(config);
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videosNodes[meta.videoId] = meta;
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// Add links between this video and the linked ones
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api.getEndScreenVideos(config)
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.forEach(nextId => nextVideos[meta.videoId].add(nextId));
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api.getCardVideos(config)
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.forEach(nextId => nextVideos[meta.videoId].add(nextId));
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for (let nextId of nextVideos[meta.videoId])
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{
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if (!(nextId in videosNodes))
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{
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videosNodes[nextId] = {};
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nextVideos[nextId] = new Set();
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queue.add(retryPlayerConfig(nextId));
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}
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}
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}
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||||||
|
return [videosNodes, nextVideos];
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Convert a video graph to the DOT format.
|
||||||
|
*
|
||||||
|
* @param Object videosNodes Videos of the graph.
|
||||||
|
* @param Object nextVideos For each video, list of next videos.
|
||||||
|
* @return string DOT representation of the graph.
|
||||||
|
*/
|
||||||
|
export const graphToDOT = (videosNodes, nextVideos) =>
|
||||||
|
{
|
||||||
|
// Convert videosNodes
|
||||||
|
const nodesStr = Object.entries(videosNodes).map(([id, {title}]) =>
|
||||||
|
{
|
||||||
|
const url = util.format(WATCH_BASE, id);
|
||||||
|
return util.format(GRAPH_NODE, id, escapeQuotes(title), url);
|
||||||
|
}).join('\n');
|
||||||
|
|
||||||
|
// Convert edges
|
||||||
|
const nextStr = Object.entries(nextVideos).map(([id, neighbors]) =>
|
||||||
|
Array.from(neighbors)
|
||||||
|
.map(neighbor => util.format(GRAPH_LINK, id, neighbor))
|
||||||
|
.join('\n')
|
||||||
|
).join('\n');
|
||||||
|
|
||||||
|
return `digraph maze {
|
||||||
|
${nodesStr}
|
||||||
|
|
||||||
|
${nextStr}}`;
|
||||||
|
};
|
||||||
|
|
@ -0,0 +1,64 @@
|
||||||
|
import debug from 'debug';
|
||||||
|
import { sleep } from './util.mjs';
|
||||||
|
|
||||||
|
const log = debug('youtube-maze:retry');
|
||||||
|
|
||||||
|
/**
|
||||||
|
* An error that is expected to be temporary such that the initial action
|
||||||
|
* may be retried.
|
||||||
|
*/
|
||||||
|
export class TemporaryError extends Error
|
||||||
|
{
|
||||||
|
constructor(message)
|
||||||
|
{
|
||||||
|
super(message);
|
||||||
|
this.name = this.constructor.name;
|
||||||
|
Error.captureStackTrace(this, this.constructor);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Make an async function retry-able.
|
||||||
|
*
|
||||||
|
* When the underlying function throws a TemporaryError, the initial
|
||||||
|
* call will be repeated, under the limits set below.
|
||||||
|
*
|
||||||
|
* @param function func Async function to call.
|
||||||
|
* @param number retries Allowed number of retries before failing.
|
||||||
|
* @param number cooldown Time to wait before retrying (ms).
|
||||||
|
* @return function New function that is retryable.
|
||||||
|
*/
|
||||||
|
export const retryable = (func, retries = 3, cooldown = 1000) =>
|
||||||
|
{
|
||||||
|
return async (...args) =>
|
||||||
|
{
|
||||||
|
while (true)
|
||||||
|
{
|
||||||
|
let remRetries = retries;
|
||||||
|
let curCooldown = cooldown;
|
||||||
|
|
||||||
|
try
|
||||||
|
{
|
||||||
|
const result = await func(...args);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
catch (err)
|
||||||
|
{
|
||||||
|
if (err instanceof TemporaryError && remRetries > 0)
|
||||||
|
{
|
||||||
|
log(`\
|
||||||
|
${func.name}(${args}) failed with error "${err.message}"
|
||||||
|
Retrying in ${curCooldown} ms (${remRetries} retries remaining)`);
|
||||||
|
|
||||||
|
await sleep(curCooldown);
|
||||||
|
remRetries -= 1;
|
||||||
|
curCooldown *= 2;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
throw err;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
@ -0,0 +1,63 @@
|
||||||
|
import util from 'util';
|
||||||
|
|
||||||
|
export const YOUTUBE_BASE = 'https://www.youtube.com/%s';
|
||||||
|
export const WATCH_BASE = util.format(YOUTUBE_BASE, 'watch?v=%s');
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Hold a queue of promises from which results can be extracted.
|
||||||
|
*/
|
||||||
|
export class PromiseQueue
|
||||||
|
{
|
||||||
|
constructor()
|
||||||
|
{
|
||||||
|
this.pending = new Set();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Add a new promise to the queue.
|
||||||
|
*
|
||||||
|
* @param Promise promise Promise to be added.
|
||||||
|
*/
|
||||||
|
add(promise)
|
||||||
|
{
|
||||||
|
const wrapped = promise.then(res => {
|
||||||
|
this.pending.delete(wrapped);
|
||||||
|
return res;
|
||||||
|
});
|
||||||
|
|
||||||
|
this.pending.add(wrapped);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Check whether there is no promise pending in the queue.
|
||||||
|
*
|
||||||
|
* @return boolean
|
||||||
|
*/
|
||||||
|
empty()
|
||||||
|
{
|
||||||
|
return this.pending.size === 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Extract the next available result from the promise queue.
|
||||||
|
*
|
||||||
|
* @return any Next result.
|
||||||
|
*/
|
||||||
|
next()
|
||||||
|
{
|
||||||
|
return Promise.race(this.pending);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Escape double quotes in a string.
|
||||||
|
*/
|
||||||
|
export const escapeQuotes = str => str.replace(/"/g, '\\"');
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Make a promise that is resolved in a point in the future.
|
||||||
|
*
|
||||||
|
* @param number time Time to wait before resolving the promise (ms).
|
||||||
|
* @return null
|
||||||
|
*/
|
||||||
|
export const sleep = time => new Promise(resolve => setTimeout(resolve, time));
|
||||||
|
|
@ -1,13 +1,404 @@
|
||||||
{
|
{
|
||||||
"name": "epenser-maze",
|
"name": "server",
|
||||||
"version": "0.2.0",
|
"version": "0.0.0",
|
||||||
"lockfileVersion": 1,
|
"lockfileVersion": 1,
|
||||||
"requires": true,
|
"requires": true,
|
||||||
"dependencies": {
|
"dependencies": {
|
||||||
|
"accepts": {
|
||||||
|
"version": "1.3.7",
|
||||||
|
"resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
|
||||||
|
"integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
|
||||||
|
"requires": {
|
||||||
|
"mime-types": "~2.1.24",
|
||||||
|
"negotiator": "0.6.2"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"array-flatten": {
|
||||||
|
"version": "1.1.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
|
||||||
|
"integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
|
||||||
|
},
|
||||||
|
"basic-auth": {
|
||||||
|
"version": "2.0.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/basic-auth/-/basic-auth-2.0.1.tgz",
|
||||||
|
"integrity": "sha512-NF+epuEdnUYVlGuhaxbbq+dvJttwLnGY+YixlXlME5KpQ5W3CnXA5cVTneY3SPbPDRkcjMbifrwmFYcClgOZeg==",
|
||||||
|
"requires": {
|
||||||
|
"safe-buffer": "5.1.2"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"body-parser": {
|
||||||
|
"version": "1.18.3",
|
||||||
|
"resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.3.tgz",
|
||||||
|
"integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
|
||||||
|
"requires": {
|
||||||
|
"bytes": "3.0.0",
|
||||||
|
"content-type": "~1.0.4",
|
||||||
|
"debug": "2.6.9",
|
||||||
|
"depd": "~1.1.2",
|
||||||
|
"http-errors": "~1.6.3",
|
||||||
|
"iconv-lite": "0.4.23",
|
||||||
|
"on-finished": "~2.3.0",
|
||||||
|
"qs": "6.5.2",
|
||||||
|
"raw-body": "2.3.3",
|
||||||
|
"type-is": "~1.6.16"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"bytes": {
|
||||||
|
"version": "3.0.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
|
||||||
|
"integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
|
||||||
|
},
|
||||||
|
"content-disposition": {
|
||||||
|
"version": "0.5.2",
|
||||||
|
"resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
|
||||||
|
"integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
|
||||||
|
},
|
||||||
|
"content-type": {
|
||||||
|
"version": "1.0.4",
|
||||||
|
"resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
|
||||||
|
"integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
|
||||||
|
},
|
||||||
|
"cookie": {
|
||||||
|
"version": "0.4.0",
|
||||||
|
"resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.0.tgz",
|
||||||
|
"integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg=="
|
||||||
|
},
|
||||||
|
"cookie-parser": {
|
||||||
|
"version": "1.4.5",
|
||||||
|
"resolved": "https://registry.npmjs.org/cookie-parser/-/cookie-parser-1.4.5.tgz",
|
||||||
|
"integrity": "sha512-f13bPUj/gG/5mDr+xLmSxxDsB9DQiTIfhJS/sqjrmfAWiAN+x2O4i/XguTL9yDZ+/IFDanJ+5x7hC4CXT9Tdzw==",
|
||||||
|
"requires": {
|
||||||
|
"cookie": "0.4.0",
|
||||||
|
"cookie-signature": "1.0.6"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"cookie-signature": {
|
||||||
|
"version": "1.0.6",
|
||||||
|
"resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
|
||||||
|
"integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
|
||||||
|
},
|
||||||
|
"debug": {
|
||||||
|
"version": "2.6.9",
|
||||||
|
"resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
|
||||||
|
"integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
|
||||||
|
"requires": {
|
||||||
|
"ms": "2.0.0"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"depd": {
|
||||||
|
"version": "1.1.2",
|
||||||
|
"resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
|
||||||
|
"integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
|
||||||
|
},
|
||||||
|
"destroy": {
|
||||||
|
"version": "1.0.4",
|
||||||
|
"resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
|
||||||
|
"integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
|
||||||
|
},
|
||||||
|
"ee-first": {
|
||||||
|
"version": "1.1.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
|
||||||
|
"integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
|
||||||
|
},
|
||||||
|
"encodeurl": {
|
||||||
|
"version": "1.0.2",
|
||||||
|
"resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
|
||||||
|
"integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
|
||||||
|
},
|
||||||
|
"escape-html": {
|
||||||
|
"version": "1.0.3",
|
||||||
|
"resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
|
||||||
|
"integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
|
||||||
|
},
|
||||||
|
"etag": {
|
||||||
|
"version": "1.8.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
|
||||||
|
"integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
|
||||||
|
},
|
||||||
|
"express": {
|
||||||
|
"version": "4.16.4",
|
||||||
|
"resolved": "https://registry.npmjs.org/express/-/express-4.16.4.tgz",
|
||||||
|
"integrity": "sha512-j12Uuyb4FMrd/qQAm6uCHAkPtO8FDTRJZBDd5D2KOL2eLaz1yUNdUB/NOIyq0iU4q4cFarsUCrnFDPBcnksuOg==",
|
||||||
|
"requires": {
|
||||||
|
"accepts": "~1.3.5",
|
||||||
|
"array-flatten": "1.1.1",
|
||||||
|
"body-parser": "1.18.3",
|
||||||
|
"content-disposition": "0.5.2",
|
||||||
|
"content-type": "~1.0.4",
|
||||||
|
"cookie": "0.3.1",
|
||||||
|
"cookie-signature": "1.0.6",
|
||||||
|
"debug": "2.6.9",
|
||||||
|
"depd": "~1.1.2",
|
||||||
|
"encodeurl": "~1.0.2",
|
||||||
|
"escape-html": "~1.0.3",
|
||||||
|
"etag": "~1.8.1",
|
||||||
|
"finalhandler": "1.1.1",
|
||||||
|
"fresh": "0.5.2",
|
||||||
|
"merge-descriptors": "1.0.1",
|
||||||
|
"methods": "~1.1.2",
|
||||||
|
"on-finished": "~2.3.0",
|
||||||
|
"parseurl": "~1.3.2",
|
||||||
|
"path-to-regexp": "0.1.7",
|
||||||
|
"proxy-addr": "~2.0.4",
|
||||||
|
"qs": "6.5.2",
|
||||||
|
"range-parser": "~1.2.0",
|
||||||
|
"safe-buffer": "5.1.2",
|
||||||
|
"send": "0.16.2",
|
||||||
|
"serve-static": "1.13.2",
|
||||||
|
"setprototypeof": "1.1.0",
|
||||||
|
"statuses": "~1.4.0",
|
||||||
|
"type-is": "~1.6.16",
|
||||||
|
"utils-merge": "1.0.1",
|
||||||
|
"vary": "~1.1.2"
|
||||||
|
},
|
||||||
|
"dependencies": {
|
||||||
|
"cookie": {
|
||||||
|
"version": "0.3.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
|
||||||
|
"integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
|
||||||
|
}
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"finalhandler": {
|
||||||
|
"version": "1.1.1",
|
||||||
|
"resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.1.tgz",
|
||||||
|
"integrity": "sha512-Y1GUDo39ez4aHAw7MysnUD5JzYX+WaIj8I57kO3aEPT1fFRL4sr7mjei97FgnwhAyyzRYmQZaTHb2+9uZ1dPtg==",
|
||||||
|
"requires": {
|
||||||
|
"debug": "2.6.9",
|
||||||
|
"encodeurl": "~1.0.2",
|
||||||
|
"escape-html": "~1.0.3",
|
||||||
|
"on-finished": "~2.3.0",
|
||||||
|
"parseurl": "~1.3.2",
|
||||||
|
"statuses": "~1.4.0",
|
||||||
|
"unpipe": "~1.0.0"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"forwarded": {
|
||||||
|
"version": "0.1.2",
|
||||||
|
"resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
|
||||||
|
"integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
|
||||||
|
},
|
||||||
|
"fresh": {
|
||||||
|
"version": "0.5.2",
|
||||||
|
"resolved": "https://registry.npmjs.org/fresh/-/fresh-0.5.2.tgz",
|
||||||
|
"integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
|
||||||
|
},
|
||||||
|
"http-errors": {
|
||||||
|
"version": "1.6.3",
|
||||||
|
"resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
|
||||||
|
"integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
|
||||||
|
"requires": {
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||||||
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|
||||||
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|
||||||
|
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|
||||||
|
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|
||||||
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|
||||||
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|
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|
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}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
11
package.json
11
package.json
|
|
@ -1,14 +1,15 @@
|
||||||
{
|
{
|
||||||
"name": "youtube-maze",
|
"name": "youtube-maze",
|
||||||
"private": true,
|
|
||||||
"version": "0.3.0",
|
"version": "0.3.0",
|
||||||
"main": "src/index.js",
|
"private": true,
|
||||||
"license": "CC0",
|
|
||||||
"scripts": {
|
"scripts": {
|
||||||
"epenser": "mkdir -p build && node explore/index.mjs EZGra6O8ClQ build/epenser.dot && dot -Tsvg build/epenser.dot -o build/epenser.svg",
|
"start": "node ./bin/www.mjs"
|
||||||
"defakator": "mkdir -p build && node explore/index.mjs XM1ssJ8yxdg build/defakator.dot && dot -Tsvg build/defakator.dot -o build/defakator.svg"
|
|
||||||
},
|
},
|
||||||
"dependencies": {
|
"dependencies": {
|
||||||
|
"cookie-parser": "~1.4.4",
|
||||||
|
"debug": "~2.6.9",
|
||||||
|
"express": "~4.16.1",
|
||||||
|
"morgan": "~1.9.1",
|
||||||
"node-fetch": "^2.6.1"
|
"node-fetch": "^2.6.1"
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,14 @@
|
||||||
|
<!doctype html>
|
||||||
|
<html lang="en">
|
||||||
|
<head>
|
||||||
|
<meta charset="utf-8">
|
||||||
|
<title>YouTube Maze</title>
|
||||||
|
<link rel="stylesheet" href="/style.css">
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
<h1>YouTube Maze</h1>
|
||||||
|
|
||||||
|
<p><a href="/mazes/EZGra6O8ClQ">e-penser</a></p>
|
||||||
|
<p><a href="/mazes/XM1ssJ8yxdg">Defakator</a></p>
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
|
|
@ -3,7 +3,7 @@
|
||||||
<head>
|
<head>
|
||||||
<meta charset="utf-8">
|
<meta charset="utf-8">
|
||||||
<title>Exploration du labyrinthe du 1er avril d’e-penser</title>
|
<title>Exploration du labyrinthe du 1er avril d’e-penser</title>
|
||||||
<link href="style.css" rel="stylesheet" />
|
<link href="/style2.css" rel="stylesheet" />
|
||||||
</head>
|
</head>
|
||||||
<body>
|
<body>
|
||||||
<h1>Exploration du labyrinthe du 1<sup>er</sup> avril d’e-penser</h1>
|
<h1>Exploration du labyrinthe du 1<sup>er</sup> avril d’e-penser</h1>
|
||||||
|
|
@ -0,0 +1,8 @@
|
||||||
|
body {
|
||||||
|
padding: 50px;
|
||||||
|
font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
|
||||||
|
}
|
||||||
|
|
||||||
|
a {
|
||||||
|
color: #00B7FF;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,22 @@
|
||||||
|
import express from 'express';
|
||||||
|
import { exploreVideos, graphToDOT } from '../lib/explore.mjs';
|
||||||
|
import { retryable } from '../lib/retry.mjs';
|
||||||
|
|
||||||
|
const router = express.Router();
|
||||||
|
export default router;
|
||||||
|
|
||||||
|
const retryExploreVideos = retryable(exploreVideos);
|
||||||
|
|
||||||
|
router.get('/:videoId', async (req, res) => {
|
||||||
|
try
|
||||||
|
{
|
||||||
|
const graph = await retryExploreVideos(req.params.videoId);
|
||||||
|
const dot = graphToDOT(...graph);
|
||||||
|
res.send(dot);
|
||||||
|
}
|
||||||
|
catch (err)
|
||||||
|
{
|
||||||
|
console.error(err);
|
||||||
|
res.status(500).send('Error');
|
||||||
|
}
|
||||||
|
});
|
||||||
Loading…
Reference in New Issue