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