99 lines
No EOL
3.1 KiB
JavaScript
99 lines
No EOL
3.1 KiB
JavaScript
const express = require('express')
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const sqlite3 = require('sqlite3')
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const cors = require('cors')
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const app = express()
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const db = new sqlite3.Database(':memory:');
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const getCurrentUnixTimestamp = () => Math.floor(Date.now() / 1000);
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db.serialize(() => {
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db.run(`CREATE TABLE cache (
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id TEXT PRIMARY KEY,
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response TEXT,
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time TEXT
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)`);
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});
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app.use(cors());
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app.get('/', async (req, res) => {
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const url = req.query.url;
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if (!url) {
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res.status(400).contentType("text/plain").send("nop");
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return;
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}
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db.get(`SELECT * FROM cache WHERE id = ?`, [url], async (err, row) => {
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if (err) {
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console.error(err);
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res.status(500).send("damn");
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return;
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}
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if (row) {
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const currentTime = getCurrentUnixTimestamp();
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const twoHoursInSeconds = 7200;
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if (currentTime - row.time > twoHoursInSeconds) {
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db.run(`DELETE FROM cache WHERE id = ?`, [url], async (err) => {
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if (err) {
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console.error(err);
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res.status(500).send("damn");
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return;
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}
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const resp = await getinfosl(url)
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const insertStmt = db.prepare(`INSERT INTO cache (id, response, time) VALUES (?, ?, ?)`);
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const currentTime = getCurrentUnixTimestamp();
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insertStmt.run(url, resp, currentTime, (err) => {
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if (err) {
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console.error(err);
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res.status(500).send("damn");
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return;
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}
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res.contentType("application/json");
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res.header("cache", "stale - invalidated");
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res.send(resp)
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console.log("old response (entry readded)");
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});
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insertStmt.finalize();
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});
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} else {
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res.header("cache", "fresh");
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res.contentType("application/json");
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res.send(row.response);
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}
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} else {
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const insertStmt = db.prepare(`INSERT INTO cache (id, response, time) VALUES (?, ?, ?)`);
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const currentTime = getCurrentUnixTimestamp();
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const resp = await getinfosl(url)
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insertStmt.run(url, resp, currentTime, (err) => {
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if (err) {
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console.error(err);
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res.status(500).send("damn");
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return;
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}
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res.
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res.contentType("application/json");
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res.header("cache", "wasnt");
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res.send(resp)
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console.log("New entry added");
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});
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insertStmt.finalize();
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}
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});
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});
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async function getinfosl(url) {
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const response = await fetch(`https://api.song.link/v1-alpha.1/links?url=${url}`);
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const meow = await response.text();
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return meow;
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}
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app.listen(3000, async () => {
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console.log("running")
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}) |