add service/expiry.js in Server

Server/index.js

@@ -1,5 +1,6 @@
 const express = require("express");
 const cors = require("cors");
+// const scheduleExpiryJobs = require("./services/expiry");
 require("dotenv").config();
 
 

Server/services/expiry.js

@@ -0,0 +1,21 @@
+const cron = require("node-cron");
+const Doc = require("../models/doc");
+
+const scheduleExpiryJobs = () => {
+    cron.schedule("0 0 * * * *", () => {
+        Doc.find({}, (err, docs) => {
+            if (err) return console.log(err);
+
+            docs.forEach((doc) => {
+                if (doc.expiryDate < Date.now()) {
+                    Doc.deleteOne({ _id: doc._id }, (err) => {
+                        if (err) return console.log(err);
+                        console.log("Document expired");
+                    });
+                }
+            });
+        });
+    });
+};
+
+module.exports = scheduleExpiryJobs;