this is it, this is the one

index.js

@@ -0,0 +1,95 @@
+ 
+const express = require('express');
+const app = express();
+const fs = require('fs'); 
+require('dotenv').config();
+
+const port = process.env.PORT;
+app.listen(port, () => {
+    console.log('App listening at http://localhost:' + port); 
+});
+
+app.get('/', (req, res) => {
+    res.sendFile(getRandomImagePath(), (err) => {
+        if (err) {
+            res.status(err.status).end();
+        }
+    });
+});
+
+app.get('/:id', (req, res) => {
+    const image = getImageById(req.params.id);
+    if (image) {
+        res.sendFile(image, (err) => {
+            if (err) {
+                res.status(err.status).end();
+            }
+        });
+    } else {
+        return res.json({
+            error: 'Image not found'
+        });
+    }
+});
+
+app.get('/api/listimgs', (req, res) => {
+   return res.json(getAllImageIds());
+});
+
+app.get('/api/randomimg', (req, res) => {
+    return res.json(getRandomImageApi());
+});
+
+app.get('/api/:id', (req, res) => {
+    const image = getImageById(req.params.id, false);
+    if (image) {
+        return res.json({
+            id: parseInt(req.params.id),
+            url: 'https://cat.frozendev.tk' + req.params.id,
+        });
+    } else {
+        return res.json({
+            error: 'Image not found'
+        });
+    }
+});
+
+const getRandomImagePath = () => {
+    const images = fs.readdirSync('./images');
+    return  __dirname + '/images/' + images[Math.floor(Math.random() * images.length)];
+};
+
+const getImageById = (id, path = true) => {
+    const images = fs.readdirSync('./images');
+
+    for (const image of images) {
+        if (image.substring(0, image.length - 4).split('-')[1] === id) {
+            if (path) {
+                return __dirname + '/images/' + image;
+            } else {
+                return image;
+            }
+        }
+    }
+
+    return null;
+};
+
+const getAllImageIds = () => {
+    const ids = [];
+
+    fs.readdirSync('./images').forEach(image => {
+        ids.push(parseInt(image.substring(0, image.length - 4) .split('-')[1]));
+    });
+
+    return ids.sort((a, b) => a - b);
+};
+
+const getRandomImageApi = () => {
+    const path = getRandomImagePath();
+    const id = path.substring(0, path.length - 4).split('-')[1];
+    return {
+        id: parseInt(id),
+        url: 'https://cat.frozendev.tk' + id,
+    };
+};