feat: add user management functions and update dashboard for create, update, and delete actions

backend/server.js

@@ -3,7 +3,7 @@ import express from "express";
 const app = express();
 const port = 4000;
 
-import { loginUser, createUser } from "./database.js";
+import { loginUser, createUser, updateUser, deleteUser } from "./database.js";
 
 app.use(express.urlencoded({ extended: true }));
 app.set("view engine", "ejs");
@@ -29,6 +29,7 @@ app.use(express.static("public"));
 // Route to handle GET requests to the root URL
 app.get("/", (req, res) => {
   res.render("login.ejs", { error: null, reload: false });
+  console.log("Frontend user requested frontend login page.");
 });
 
 let latestUser;
@@ -40,9 +41,10 @@ app.post("/login", (req, res) => {
       res.status(200).render("dashboard.ejs", {
         sqlResult: result,
         newLink: `/dashboard/${result.user.id}`,
+        alert: null,
+        success: null,
       });
       latestUser = result;
-      console.log(latestUser);
     } else {
       res
         .status(401)
@@ -51,26 +53,51 @@ app.post("/login", (req, res) => {
   });
 });
 
-app.post("/createUser", (req, res) => {
-  createUser(
+app.post(["/createUser", "/updateUser", "/deleteUser"], (req, res) => {
+  let action = req.path;
+  let funcName;
+
+  if (action === "/createUser") {
+    funcName = createUser;
+  } else if (action === "/updateUser") {
+    funcName = updateUser;
+  } else if (action === "/deleteUser") {
+    if (latestUser && req.body.username !== latestUser.user.username) {
+      funcName = deleteUser;
+    } else {
+      res.status(400).render("dashboard.ejs", {
+        sqlResult: latestUser,
+        newLink: latestUser ? `/dashboard/${latestUser.id}` : "#",
+        alert: "Cannot delete the currently logged-in user!",
+        success: null,
+      });
+      return;
+    }
+  } else {
+    res.status(400).send("Invalid action");
+    return;
+  }
+  funcName(
     req.body.username,
     req.body.first_name,
     req.body.last_name,
     req.body.password,
     req.body.email
   ).then((result) => {
-    if (result.success) {
+    if (result.success === true) {
       res.status(201).render("dashboard.ejs", {
         sqlResult: latestUser,
         newLink: `/dashboard/${latestUser.id}`,
+        alert: null,
+        success: "User action successful!",
       });
-      console.log(latestUser);
     } else {
       res.status(400).render("dashboard.ejs", {
         sqlResult: latestUser,
         newLink: `/dashboard/${latestUser.id}`,
+        alert: "User action failed!",
+        success: null,
       });
-      console.log(latestUser);
     }
   });
 });