first commit

.gitignore

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+node_modules

main.js

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+const express = require('express')
+const sqlite3 = require('sqlite3')
+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.get('/', async (req, res) => {
+    const url = req.query.url;
+
+    if (!url) {
+        res.status(400).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 = 10;
+
+            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.send(resp)
+                        console.log("old response (entry readded)");
+                    });
+        
+                    insertStmt.finalize();
+                });
+            } else {
+                console.log("cache valid")
+                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.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")
+})

package.json

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+{
+  "name": "slcache",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "main": "node ./main.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.21.1",
+    "sqlite3": "^5.1.7"
+  }
+}