143 lines
4.1 KiB
JavaScript
Executable File
143 lines
4.1 KiB
JavaScript
Executable File
#!/usr/bin/env -S npx nodejsscript
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/* jshint esversion: 11,-W097, -W040, module: true, node: true, expr: true, undef: true *//* global echo, $, pipe, s, fetch, cyclicLoop */
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const url_drops= "https://pagenotfound.cz/drop/";
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const { version, description }= s.cat("package.json").xargs(JSON.parse);
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/**
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* @typedef {Object} Article
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* @property {string} title
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* @property {string} perex
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* @property {string} author
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* @property {string} loc
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* @property {string} drop
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* */
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/**
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* @typedef {Object} Drop
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* @property {string} drop
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* @property {string} date
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* */
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/**
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* @typedef {Object} Sitemap
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* @property {Article[]} articles
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* @property {Drop[]} drops
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* */
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/**
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* @typedef {Object} State
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* @property {Sitemap} json
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* @property {string[]} changed Changed files
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* */
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$.api()
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.version(version)
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.describe(description)
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.command("pull", "Update article list")
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.option("--git", "Update git repository")
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.action(async function pull({ git: is_git= false }){
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if(is_git) s.run`git pull --rebase`;
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const { changed }= await sitemap().then(toRSS);
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echo("Changed files:", changed.length ? changed.join(", ") : "—");
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if(is_git) gitCommit(changed, "pull");
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$.exit(0);
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})
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.parse();
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function gitCommit(files, des= "not specified"){
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if(!files.length || !s.run`git diff --numstat`.trim())
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return echo("Nothig todo");
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echo("Diff to save");
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s.run`git config user.name "Bot"`;
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s.run`git config user.email "${"zc.murtnec@naj.elrdna".split("").reverse().join("")}"`;
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s.run`git add ${files}`;
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s.run`git commit -m "Updated by bot – ${des}"`;
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s.run`git push`;
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s.run`git config --remove-section user`;
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}
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/**
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* @param {State} state
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* @returns {State} state
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* */
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async function toRSS({ json, changed }){
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if(!changed.length) return { json, changed };
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const path= "rss.xml";
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const host= "https://pagenotfound.cz";
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const articles= json.articles.map(function({ title, perex, author, loc, drop }){
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return [
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"<item>",
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...[
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`<title>${title}</title>`,
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`<link>${host+loc}</link>`,
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`<description>${perex}</description>`,
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`<author>${author}</author>`,
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`<pubDate>${json.drops.find(d=> d.drop === drop).date}</pubDate>`,
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`<category>${drop}</category>`,
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].map(l=> "\t"+l),
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"</item>"
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].map(l=> "\t"+l).join("\n");
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});
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s.echo([
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`<?xml version="1.0" encoding="UTF-8" ?>`,
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`<rss version="2.0">`,
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"<channel>",
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` <title>Pagenotfound.cz</title>`,
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` <link>${host}</link>`,
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...articles,
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"</channel>",
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"</rss>"
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].join("\n")).to(path);
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return { json, changed: [...changed, path] };
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}
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import { JSDOM } from "jsdom";
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/** @returns {Promise<State>} */
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async function sitemap(){
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const path= "sitemap.json";
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/** @type {Sitemap} */
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const json= s.test("-f", path) ? s.cat(path).xargs(JSON.parse) : { drops: [], articles: [] };
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await syncDrops(json);
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const [ { drop: drop_last } ]= json.drops;
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const [ article_last= { drop: "" } ]= json.articles;
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if(drop_last === article_last.drop) return { json, changed: [] };
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const res= await fetch(url_drops+drop_last);
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if(res.status !== 200) return { json, changed: [] };
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const dom= new JSDOM(await res.text());
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const diff= [];
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for(const article of dom.window.document.querySelectorAll("article")){
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diff.push({
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title: article.querySelector("h2").textContent.trim(),
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perex: article.querySelector("[class^=ArticleTile_perex]").textContent.trim(),
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author: article.querySelector("[class^=ArticleTile_author]").textContent.trim(),
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loc: article.querySelector("a").href,
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drop: drop_last,
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});
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}
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json.articles.unshift(...diff);
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s.echo(JSON.stringify(json, null, "\t")).to(path);
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return { json, changed: [ path ] };
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}
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/** @param {Sitemap} json */
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async function syncDrops(json){
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const [ { drop: drop_last } ]= json.drops;
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const i_index= drop_last.search(/\d/);
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const pre= drop_last.slice(0, i_index);
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const index= pipe(
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Number,
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i=> i+1,
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i=> i.toString().padStart(drop_last.length - i_index, "0"),
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)(drop_last.slice(i_index));
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const drop= pre+index;
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const res= await fetch(url_drops+drop, { method: "HEAD" });
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if(res.status !== 200) return json;
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const date= pipe(
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d=> new Date(d),
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d=> d.toISOString(),
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)(res.headers.get("date"));
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json.drops.unshift({ drop, date });
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return json;
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}
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