2023-06-18 21:20:52 +00:00
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import express from "express";
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2023-06-19 10:05:59 +00:00
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import { Readability, isProbablyReaderable } from "@mozilla/readability";
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2023-06-18 21:20:52 +00:00
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import got from "got";
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2023-06-18 22:44:17 +00:00
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import path from "path";
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import { fileURLToPath } from "url";
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2023-06-19 12:11:22 +00:00
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import "dotenv/config";
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2023-06-21 00:26:24 +00:00
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import { parseHTML, parseJSON } from "linkedom";
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2023-06-20 10:19:17 +00:00
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// @ts-ignore
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import XHR2 from "xhr2";
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const XMLHttpRequest = XHR2.XMLHttpRequest;
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2023-06-20 11:51:05 +00:00
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import { minify } from "html-minifier";
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2023-06-20 23:00:31 +00:00
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import { blazeUrl, injectBlazeToPageLinks } from "./utils.js";
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2023-06-18 21:20:52 +00:00
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const app = express();
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2023-06-19 10:05:59 +00:00
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const port = 8888;
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2023-06-18 21:20:52 +00:00
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2023-06-20 11:51:05 +00:00
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const minifierOptions = {
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collapseWhitespace: true,
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removeComments: true,
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removeOptionalTags: true,
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removeRedundantAttributes: true,
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removeScriptTypeAttributes: true,
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removeTagWhitespace: true,
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useShortDoctype: true,
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minifyCSS: true,
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};
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2023-06-18 22:46:43 +00:00
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// @ts-ignore
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2023-06-18 22:44:17 +00:00
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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2023-06-19 11:58:21 +00:00
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app.get("/", async (req, res) => {
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const searchEngine = "https://api.search.brave.com/res/v1/web/search";
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2023-06-20 10:19:17 +00:00
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const query = req.query.q as string;
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2023-06-18 21:20:52 +00:00
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2023-06-19 10:05:59 +00:00
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if (!query) {
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2023-06-20 10:19:17 +00:00
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return res.sendFile(path.join(__dirname, "/dist/index.html"));
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2023-06-18 21:20:52 +00:00
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}
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2023-06-20 07:32:07 +00:00
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const key = process.env.CYCLIC_BRAVE_KEY;
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2023-06-19 12:01:17 +00:00
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if (!key) {
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throw new Error("No brave key found");
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}
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2023-06-20 10:19:17 +00:00
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try {
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const xhr = new XMLHttpRequest();
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2023-06-20 23:00:31 +00:00
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xhr.open("GET", `${searchEngine}?q=${query}&safesearch=moderate`, true);
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2023-06-20 10:19:17 +00:00
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xhr.setRequestHeader("Accept", "*/*");
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xhr.setRequestHeader("X-Subscription-Token", key);
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xhr.onreadystatechange = () => {
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if (xhr.readyState !== 4) {
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return;
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}
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if (xhr.status !== 200) {
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console.error("XHR request failed:", xhr.status, xhr.statusText);
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return;
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}
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const data = JSON.parse(xhr.responseText);
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// @ts-ignore
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const results = data.web.results.map(
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(result: any) => `
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2023-06-20 07:45:18 +00:00
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<article>
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2023-06-20 23:00:31 +00:00
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<a href="${blazeUrl}/blazed?url=${result.url}">
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2023-06-20 10:19:17 +00:00
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<h2>${result.title}</h2>
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</a>
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2023-06-19 13:27:14 +00:00
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<span>${result.meta_url.hostname}</span>
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2023-06-19 11:58:21 +00:00
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<p>${result.description}</p>
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2023-06-20 07:45:18 +00:00
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</article>
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2023-06-19 12:11:22 +00:00
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<hr />
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2023-06-20 10:19:17 +00:00
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`
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);
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const html = `
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<title>Blaze - ${query}</title>
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<style>
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body {font-family:sans-serif}
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h2 {margin-bottom:0}
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span {font-size:.9rem}
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</style>
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</head>
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<body>
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${results.join("")}
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</body>
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</html>
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`;
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2023-06-20 11:51:05 +00:00
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const minifiedSerp = minify(html, minifierOptions);
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res.send(minifiedSerp);
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2023-06-20 10:19:17 +00:00
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};
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xhr.send();
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} catch (err) {
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console.error(err);
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}
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2023-06-18 21:20:52 +00:00
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});
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2023-06-18 22:52:20 +00:00
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2023-06-20 09:48:11 +00:00
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app.get("/blazed", async (req, res) => {
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2023-06-20 07:32:07 +00:00
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const pageToBlaze = req.query.url as string;
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2023-06-20 09:48:11 +00:00
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try {
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2023-06-20 10:59:26 +00:00
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const response = await got(pageToBlaze, {
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headers: { Accept: "text/html" },
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});
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2023-06-20 09:48:11 +00:00
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const { document } = parseHTML(response.body);
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2023-06-21 00:26:24 +00:00
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// TODO: missing handling of 404. The idea is to send the blaze 404 page, otherwise will show error page on client
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2023-06-20 09:48:11 +00:00
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if (!isProbablyReaderable(document)) {
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2023-06-21 00:26:24 +00:00
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// TODO: send minimalized version of the page instead the read mode
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// implementation draft:
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// document.querySelectorAll("link").forEach((l) => {
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// l.remove();
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// });
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// document.querySelectorAll("style").forEach((s) => {
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// s.remove;
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// });
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// document.querySelectorAll("script").forEach((s) => {
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// s.remove();
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// });
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// // @ts-ignore
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// const jsonDocument = document.toJSON();
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// const cleanDocument = parseJSON(jsonDocument);
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// return res.send(document.toString());
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2023-06-20 09:48:11 +00:00
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return res.sendFile(path.join(__dirname, "/dist/not_blazed.html"));
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}
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2023-06-20 07:32:07 +00:00
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2023-06-20 10:36:47 +00:00
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//TODO: find if there are more performant ways to remove images or evaluate if is the case to remove images
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document.querySelectorAll("img").forEach((img) => img.remove());
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2023-06-20 09:48:11 +00:00
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const reader = new Readability(document);
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const article = reader.parse();
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2023-06-20 07:32:07 +00:00
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2023-06-20 09:48:11 +00:00
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if (!article) {
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return res.send("Something went wrong");
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}
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2023-06-20 07:32:07 +00:00
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2023-06-20 11:51:05 +00:00
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const blazedPage = `<html><head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width,initial-scale=1" />
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<style>body {font-family: sans-serif}</style>
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</head>
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<body>
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${article.content}
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2023-06-20 23:00:31 +00:00
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<script>
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${injectBlazeToPageLinks}
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const url = "${blazeUrl}"
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2023-06-21 00:26:24 +00:00
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const currentUrl = "${req.query.url}"
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injectBlazeToPageLinks(url, currentUrl)
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2023-06-20 23:00:31 +00:00
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</script>
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2023-06-20 11:51:05 +00:00
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</body></html>
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`;
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const minifiedBlazedPage = minify(blazedPage, minifierOptions);
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res.send(minifiedBlazedPage);
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2023-06-20 09:48:11 +00:00
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} catch (err) {
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console.log(err);
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}
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2023-06-20 07:32:07 +00:00
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});
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2023-06-19 10:05:59 +00:00
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2023-06-19 12:55:28 +00:00
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app.get("/info", (_, res) => {
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res.sendFile(path.join(__dirname + "/dist/info.html"));
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2023-06-20 07:32:07 +00:00
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});
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app.get("/ooops", (_, res) => {
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res.sendFile(path.join(__dirname + "/dist/info_not_blazed.html"));
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});
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2023-06-19 12:55:28 +00:00
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2023-06-20 07:41:34 +00:00
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app.get("/favicon.svg", (_, res) => {
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res.sendFile(path.join(__dirname + "/favicon.svg"));
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});
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2023-06-18 22:52:20 +00:00
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app.listen(port, () => {
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console.log(`Got request`);
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});
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