347 lines
10 KiB
JavaScript
347 lines
10 KiB
JavaScript
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import { writeFile, readFile } from "fs/promises";
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import { rankCalc } from "./rank.js";
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import * as cheerio from 'cheerio';
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let cache = {};
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let site = process.env.site || 'darflen';
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let route = process.env.route || './test.txt';
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let pageLimit = process.env.pageLimit || Infinity;
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let blacklist = (process.env.blacklist + '').split(',') || [];
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let greylist = (process.env.greylist + '').split(',') || [];
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let threshold = process.env.threshold || 100;
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let rel = (process.env.rel == 'relative');
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let hh;
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let percent = 0;
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let d = process.env.depth || 1;
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let noWorry = [];
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async function urlCollector(url, path, file, useLimit, data2) {
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let urls = data2[url] ? (data2[url][path] || []) : [];
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urls = [...urls];
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if (path != 'following' || noWorry.indexOf(url) != -1) return urls;
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let data;
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try {
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data = await fetch(url);
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if (!data.headers.get("content-type").startsWith('text/html')) return urls;
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data = await data.text();
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console.log(`User ${url} was fetched`);
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} catch (err) {
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console.warn(`User ${url} did not fetch`);
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return urls;
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}
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let body = cheerio.load(data);
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let links = body('a');
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let ll = urls.length;
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let returnedFalse = false;
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links.each(function (i, link) {
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if (useLimit && urls.length >= pageLimit * 40 + ll) {
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returnedFalse = true;
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return false;
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}
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let h = body(link).attr('href');
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if (!h) return true;
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h = h.trim();
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if (h.startsWith('./') || h.startsWith('../') || h.startsWith('/')) {
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let u = new URL(url);
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u.pathname = h;
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h = u.toString();
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}
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if (h.startsWith('?')) {
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let u = new URL(url);
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u.search = h;
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h = u.toString();
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}
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if (h.startsWith('#')) {
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let u = new URL(url);
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h = u.toString();
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}
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let h2;
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try {
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h2 = new URL(h);
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} catch (err) {
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}
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if (!h2) return true;
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if (rel && h2.host != new URL(url).host) return true;
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for (let g of greylist) {
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if (h2.toString().includes(g) && g != '') return true;
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}
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if (blacklist.indexOf(h2.toString()) != -1) return true;
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urls.push(h2.toString());
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urls = [...new Set(urls)];
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console.log(`User ${url} has ${urls.length} pages calculated`);
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return true;
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})
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if (!returnedFalse) {
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noWorry.push(url);
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}
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let h3;
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try {
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h3 = new URL(new URL(url).origin);
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} catch (err) {
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}
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urls.push(h3.toString())
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urls.push(url.split('?')[0]);
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if (!data2[url]) data2[url] = { following: [], followers: [] };
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data2[url][path] = [...new Set(urls)];
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return data2[url][path];
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}
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async function rounder(users, data, mode) {
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let p = [];
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let congested = [];
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let timeout = false;
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let pr = new Promise(resolve => setTimeout(function (...ag) {
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timeout = true;
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resolve(ag);
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}, (process.env.delay * 1000) || (60 * 1000)))
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let ul = 0;
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for (let u of users) {
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let it = 0;
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while (p.length >= (process.env.maxRate || 15)) {
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p = p.filter(x => x != 'hi');
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if (p.length == 0) break;
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let pv = await Promise.any([...p, pr]);
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if (timeout) {
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console.warn(`Somehow, this is stuck.`);
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break;
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}
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it++;
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if (it > 10) {
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console.warn(`Promises got congested. Moving to another array...`)
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congested = congested.concat(p);
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p = [];
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break;
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}
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}
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if (timeout) break;
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if (!data[u]) data[u] = { followers: [], following: [] };
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if (noWorry.indexOf(u) != -1) {
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percent += 50 / d / users.length;
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console.log(`User ${u} followers was already fully calculated (${percent}% total)`);
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continue;
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}
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p.push(async function (k) {
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await siteCollector(u, 'followers', site, mode, data);
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percent += 50 / d / users.length;
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console.log(`User ${u} followers is fully calculated (${percent}% total)`);
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p[k] = 'hi';
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}(p.length));
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p.push(async function (k) {
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await siteCollector(u, 'following', site, mode, data);
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percent += 50 / d / users.length;
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console.log(`User ${u} following is fully calculated (${percent}% total)`);
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p[k] = 'hi';
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}(p.length));
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}
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if (!timeout) {
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p = p.concat(congested);
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await Promise.all(p);
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} else {
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console.warn('Took too long...')
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}
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let endn = [...users];
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let oldLength = endn.length;
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for (let h in data) {
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endn.push(h);
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if (endn.length > oldLength * 1.25) {
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endn = [...new Set(endn)];
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}
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}
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//let fcg = ((a, b) => ((data[a] ? -data[a].followers.length : 0) - (data[b] ? -data[b].followers.length : 0)));
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//endn = endn.sort(fcg);
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return endn;
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}
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async function textCollector(word, path, file) {
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if (!hh) hh = await readFile(file, 'utf8');
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hh = hh.toLowerCase();
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let words = hh.split(/[\n.]+/g).filter(x => word.length == 0 || ` ${x} `.includes(` ${word} `));
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words = words.join(' ').split(/[^a-zA-Z0-9']+/g);
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words = [...new Set(words)];
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if (!data2[word]) data2[word] = { following: [], followers: [] };
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data2[word][path] = words;
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return words;
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}
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async function siteCollector(user, path, site, useLimit, data2) {
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let users = [];
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let urls = data2[user] ? (data2[user][path] || []) : [];
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let ul = urls.length;
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let i = 1 + (ul || 0);
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let out = [];
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if (site == 'file') {
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return await textCollector(user, path, route, data2);
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}
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if (site == 'url') {
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return await urlCollector(user, path, route, useLimit, data2);
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}
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while (true) {
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let p;
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if (site == 'darflen') {
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p = `https://api.darflen.com/users/${user}/${path}/${i}`;
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} else if (site == 'scratch') {
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p = `https://api.scratch.mit.edu/users/${user}/${path}/?limit=40&offset=${(i - 1) * 40}`;
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} else {
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throw 'That site is not supported.';
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}
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let j1 = cache[p];
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if (!j1) {
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let h1 = await fetch(p);
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try {
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j1 = await h1.json();
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} catch (err) {
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j1 = [];
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}
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}
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cache[p] = j1;
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if (!j1 || ((i - ul - 1) >= pageLimit && useLimit)) break;
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let users2;
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try {
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if (site == 'darflen') {
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users2 = j1[path].map(x => x.profile.username);
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} else if (site == 'scratch') {
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users2 = j1.map(x => x.username);
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}
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} catch (err) {
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users2 = [];
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}
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users.push(users2);
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if (users2.length == 0) break;
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i++;
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console.log(`User ${user} has ${i} pages calculated`);
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}
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out = out.concat(...users);
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if (useLimit) {
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out.length = Math.min(out.length, pageLimit * 40);
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}
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if (!data2[user]) data2[user] = { following: [], followers: [] };
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data2[user][path] = out;
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return out;
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}
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(async function () {
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let penv = process.env.user || 'paradock';
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penv = penv.split(',');
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let users = [];
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let data = {};
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try {
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let fil = await readFile(`./net_${btoa(penv[0])}.json`);
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data = JSON.parse(fil);
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console.log(`Archive found.`)
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} catch (err) {
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data = {};
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}
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users = await rounder(penv, data, false);
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users = [...new Set(users)];
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let dat;
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for (let i = 0; i < d; i++) {
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if (i != 0) {
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let tempSet = dat.map(x => x[0]);
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let kk = Object.keys(data);
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//kk = kk.sort((x, y) => ((new URL(x).host == new URL(penv[0]).host) ? 0 : 1) - ((new URL(y).host == new URL(penv[0]).host) ? 0 : 1));
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console.log(kk)
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let oldLength = kk.length;
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let theData = {};
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for (let a = 0; a < oldLength * threshold && a < oldLength; a++) {
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let key = kk[a];
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theData[key] = data[key];
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}
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users = tempSet.concat(await rounder(tempSet, theData, true));
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users = [...new Set(users)];
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}
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for (let uf of users) {
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let u = data[uf];
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if (!u) {
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data[uf] = { following: [], followers: [] }
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}
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let { following, followers } = u;
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if (!following || !followers) continue;
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try {
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if (site == 'url') {
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let o = new URL(new URL(uf).origin).toString();
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if (followers.indexOf(o) == -1) {
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followers.push(o)
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}
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}
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} catch (err) {
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}
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for (let f of followers) {
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if (!data[f]) data[f] = { followers: [] };
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if (!data[f].following) data[f].following = [];
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if (data[f].following.indexOf(uf) == -1) {
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data[f].following.push(uf);
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}
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}
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for (let f of following) {
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if (!data[f]) data[f] = { following: [] };
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if (!data[f].followers) data[f].followers = [];
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if (data[f].followers.indexOf(uf) == -1) {
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data[f].followers.push(uf);
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}
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}
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}
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console.log(`Graph is fully repaired`);
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dat = Object.entries(rankCalc(data, (i == d - 1) ? process.env.matrixIterations : 3, penv, site == 'url'));
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dat = dat.sort((a, b) => b[1] - a[1]);
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console.log(`Graph is calculated with ${dat.length} entries`);
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let dat2 = {};
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for (let d of dat) {
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dat2[d[0]] = d[1] * 100 + "%";
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}
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let srz = JSON.stringify(dat2);
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let ff = `./users_${i}_${btoa(penv[0])}_${+new Date()}.json`;
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await writeFile(ff, srz, 'utf8');
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console.log(`Temporary file ${ff} is written`);
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if (process.env.useArchive) {
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ff = `./net_${btoa(penv[0])}.json`;
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await writeFile(ff, JSON.stringify(data), 'utf8');
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console.log(`Temporary file ${ff} is written`);
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}
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}
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console.log(`Graph is complete (${Object.keys(users).length} entries)`);
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})()
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