feat: send notification email for upcoming events

Author: Aksh-Bansal-dev

server/package-lock.json

@@ -19,6 +19,7 @@
     "express": "^4.17.1",
     "jsonwebtoken": "^8.5.1",
     "mongoose": "^5.12.9",
+    "node-cron": "^3.0.0",
     "nodemailer": "^6.6.1",
     "passport": "^0.4.1",
     "passport-google-oauth": "^2.0.0",
@@ -33,6 +34,7 @@
     "@types/jsonwebtoken": "^8.5.1",
     "@types/mongoose": "^5.10.5",
     "@types/node": "^15.0.3",
+    "@types/node-cron": "^2.0.3",
     "@types/nodemailer": "^6.4.2",
     "@types/passport": "^1.0.6",
     "@types/passport-google-oauth": "^1.0.41",

server/package.json

@@ -3,12 +3,15 @@ import mongoose from "mongoose";
 import cors from "cors";
 import cookieParser from "cookie-parser";
 import passport from "passport";
+import cron from "node-cron";
 
 import refreshTokenRoute from "./routes/refreshtoken";
 import userRoute from "./routes/userRoutes";
 import googleAuthRoutes from "./routes/googleAuthRoutes";
 import meetingRoute from "./routes/meetingRoutes";
 import pollRoutes from "./routes/pollRoutes";
+import { Meeting } from "./model/Meeting";
+// import { mailer } from "./config/mailer"; // Uncomment this in production
 require("./config/google-oauth");
 
 // eslint-disable-next-line @typescript-eslint/no-var-requires
@@ -48,6 +51,24 @@ app.get("/", (_, res) => {
   res.send("hello world");
 });
 
+// EMAIL
+cron.schedule("0 0 * * *", async () => {
+  const data = await Meeting.find();
+  const tom = new Date();
+  tom.setDate(tom.getDate() + 1);
+  data.forEach((e) => {
+    const date = new Date(e.datetime);
+    if (date.toISOString() <= tom.toISOString()) {
+      console.log("sending mail...");
+      // UNCOMMENT below in production
+      // const registers = e.registered;
+      // const earr = registers.map(e=>e.email);
+      // const emails = earr.join(", ");
+      // mailer(emails);
+    }
+  });
+});
+
 // LISTEN
 const port = process.env.PORT ? process.env.PORT : 5000;
 app.listen(port, () => {