added a psa system

backend/api/controllers/psa.js

@@ -0,0 +1,14 @@
+const PsaDAO = require("../../dao/psa");
+
+class PsaController {
+  static async get(req, res, next) {
+    try {
+      let data = await PsaDAO.get();
+      return res.status(200).json(data);
+    } catch (e) {
+      return next(e);
+    }
+  }
+}
+
+module.exports = PsaController;

backend/api/routes/psa.js

@@ -0,0 +1,11 @@
+const { authenticateRequest } = require("../../middlewares/auth");
+const PsaController = require("../controllers/psa");
+const RateLimit = require("../../middlewares/rate-limit");
+
+const { Router } = require("express");
+
+const router = Router();
+
+router.get("/", RateLimit.limit1persec, PsaController.get);
+
+module.exports = router;

backend/dao/psa.js

@@ -0,0 +1,9 @@
+const { mongoDB } = require("../init/mongodb");
+
+class PsaDAO {
+  static async get(uid, config) {
+    return await mongoDB().collection("psa").find().toArray();
+  }
+}
+
+module.exports = PsaDAO;

backend/server.js

@@ -30,6 +30,8 @@ const presetRouter = require("./api/routes/preset");
 app.use("/presets", presetRouter);
 const quoteRatings = require("./api/routes/quote-ratings");
 app.use("/quote-ratings", quoteRatings);
+const psaRouter = require("./api/routes/psa");
+app.use("/psa", psaRouter);
 
 app.use(function (e, req, res, next) {
   let uid = undefined;

gulpfile.js

@@ -126,6 +126,7 @@ const refactoredSrc = [
   "./src/js/elements/loader.js",
   "./src/js/elements/sign-out-button.js",
   "./src/js/elements/about-page.js",
+  "./src/js/elements/psa.js",
 
   "./src/js/popups/custom-text-popup.js",
   "./src/js/popups/quote-search-popup.js",

src/js/account-controller.js

@@ -13,6 +13,7 @@ import * as DB from "./db";
 import * as TestLogic from "./test-logic";
 import * as UI from "./ui";
 import axiosInstance from "./axios-instance";
+import * as PSA from "./psa";
 
 export const gmailProvider = new firebase.auth.GoogleAuthProvider();
 const githubProvider = new firebase.auth.GithubAuthProvider();
@@ -47,6 +48,7 @@ const authListener = firebase.auth().onAuthStateChanged(async function (user) {
       ChallengeController.setup(challengeName);
     }, 1000);
   }
+  PSA.show();
 });
 
 export function signIn() {

src/js/elements/notifications.js

@@ -1,7 +1,14 @@
 const notificationHistory = [];
 let id = 0;
 class Notification {
-  constructor(message, level, duration, customTitle, customIcon) {
+  constructor(
+    message,
+    level,
+    duration,
+    customTitle,
+    customIcon,
+    closeCallback = () => {}
+  ) {
     this.message = message;
     this.level = level;
     if (duration == undefined) {
@@ -16,6 +23,7 @@ class Notification {
     this.customTitle = customTitle;
     this.customIcon = customIcon;
     this.id = id++;
+    this.closeCallback = closeCallback;
   }
   //level
   //0 - notice
@@ -117,6 +125,7 @@ class Notification {
             125,
             () => {
               $(`#notificationCenter .notif[id='${this.id}']`).remove();
+              this.closeCallback();
             }
           );
         }
@@ -124,8 +133,22 @@ class Notification {
   }
 }
 
-export function add(message, level, duration, customTitle, customIcon) {
+export function add(
+  message,
+  level,
+  duration,
+  customTitle,
+  customIcon,
+  closeCallback
+) {
   notificationHistory.push(
-    new Notification(message, level, duration, customTitle, customIcon).show()
+    new Notification(
+      message,
+      level,
+      duration,
+      customTitle,
+      customIcon,
+      closeCallback
+    ).show()
   );
 }

src/js/elements/psa.js

@@ -0,0 +1,36 @@
+import axiosInstance from "./axios-instance";
+import * as Notifications from "./notifications";
+
+async function getLatest() {
+  let psa = await axiosInstance.get("/psa");
+  return psa.data;
+}
+
+export async function show() {
+  const latest = await getLatest();
+  if (latest == null || latest.length == 0) {
+    clearMemory();
+    return;
+  }
+  let localmemory = getMemory();
+  latest.forEach((psa) => {
+    if (localmemory.includes(psa._id)) return;
+    Notifications.add(psa.message, -1, 0, "Announcement", "bullhorn", () => {
+      setMemory(psa._id);
+    });
+  });
+}
+
+function setMemory(id) {
+  let list = getMemory();
+  list.push(id);
+  window.localStorage.setItem("confirmedPSAs", JSON.stringify(list));
+}
+
+function clearMemory() {
+  window.localStorage.setItem("confirmedPSAs", JSON.stringify([]));
+}
+
+function getMemory() {
+  return JSON.parse(window.localStorage.getItem("confirmedPSAs")) ?? [];
+}