blaze/index.ts

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import express from "express";
import { Readability, isProbablyReaderable } from "@mozilla/readability";
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import got from "got";
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import path from "path";
import { fileURLToPath } from "url";
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import "dotenv/config";
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import { parseHTML } from "linkedom";
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// @ts-ignore
import XHR2 from "xhr2";
const XMLHttpRequest = XHR2.XMLHttpRequest;
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const app = express();
const port = 8888;
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// @ts-ignore
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const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
app.get("/", async (req, res) => {
const searchEngine = "https://api.search.brave.com/res/v1/web/search";
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const query = req.query.q as string;
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if (!query) {
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return res.sendFile(path.join(__dirname, "/dist/index.html"));
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}
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const key = process.env.CYCLIC_BRAVE_KEY;
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if (!key) {
throw new Error("No brave key found");
}
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try {
const xhr = new XMLHttpRequest();
xhr.open("GET", `${searchEngine}?q=${query}`, true);
xhr.setRequestHeader("Accept", "*/*");
xhr.setRequestHeader("X-Subscription-Token", key);
xhr.onreadystatechange = () => {
if (xhr.readyState !== 4) {
return;
}
if (xhr.status !== 200) {
console.error("XHR request failed:", xhr.status, xhr.statusText);
return;
}
const data = JSON.parse(xhr.responseText);
const url = process.env.DEV_MODE
? "http://localhost:8888/blazed"
: "https://blaze.cyclic.app/blazed";
// @ts-ignore
const results = data.web.results.map(
(result: any) => `
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<article>
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<a href="${url}?url=${result.url}">
<h2>${result.title}</h2>
</a>
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<span>${result.meta_url.hostname}</span>
<p>${result.description}</p>
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</article>
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<hr />
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`
);
const html = `
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Blaze - ${query}</title>
<style>
body {font-family:sans-serif}
h2 {margin-bottom:0}
span {font-size:.9rem}
</style>
</head>
<body>
${results.join("")}
</body>
</html>
`;
res.send(html);
};
xhr.send();
} catch (err) {
console.error(err);
}
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});
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app.get("/blazed", async (req, res) => {
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const pageToBlaze = req.query.url as string;
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try {
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const response = await got(pageToBlaze, {
headers: { Accept: "text/html" },
});
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const { document } = parseHTML(response.body);
if (!isProbablyReaderable(document)) {
return res.sendFile(path.join(__dirname, "/dist/not_blazed.html"));
}
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//TODO: find if there are more performant ways to remove images or evaluate if is the case to remove images
document.querySelectorAll("img").forEach((img) => img.remove());
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const reader = new Readability(document);
const article = reader.parse();
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if (!article) {
return res.send("Something went wrong");
}
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res.send(article.content);
} catch (err) {
console.log(err);
}
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});
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app.get("/info", (_, res) => {
res.sendFile(path.join(__dirname + "/dist/info.html"));
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});
app.get("/ooops", (_, res) => {
res.sendFile(path.join(__dirname + "/dist/info_not_blazed.html"));
});
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app.get("/favicon.svg", (_, res) => {
res.sendFile(path.join(__dirname + "/favicon.svg"));
});
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app.listen(port, () => {
console.log(`Got request`);
});