frontend/src/components/AuthenticatedRoute.jsx

@@ -12,7 +12,7 @@ const AuthenticatedRoute = ({ children, isAuthenticated }) => {
     } else if (!isAuthenticated && currentUser?.id) {
       setLocation("/");
     }
-  }, [currentUser]);
+  }, [currentUser, setLocation, isAuthenticated]);
 
   return children;
 };

frontend/src/components/CoursesWidget.jsx

@@ -0,0 +1,52 @@
+import { Card, Container } from "react-bootstrap";
+import { Link } from "wouter";
+
+const CoursesWidget = ({ className = "" }) => {
+  const dummyData = [
+    {
+      course_id: 1,
+      course_title: "Advanced Website Design",
+      couse_code: "COMP 2707",
+      instructor: "Saja Al Mamoori",
+    },
+    {
+      course_id: 2,
+      course_title: "Introduction to Roman Civilization",
+      couse_code: "GRST 1200",
+      instructor: "Max Nelson",
+    },
+    {
+      course_id: 3,
+      course_title: "Software Verification and Testing",
+      couse_code: "COMP 4110",
+      instructor: "Serif Saad",
+    },
+    {
+      course_id: 1,
+      course_title: "Advanced Website Design",
+      couse_code: "COMP 2707",
+      instructor: "Saja Al Mamoori",
+    },
+  ];
+  return (
+    <Container
+      className={`${className} py-3 d-flex flex-wrap justify-content-around`}
+    >
+      {dummyData.map((course, i) => {
+        return (
+          <Link is="a" key={i} href={`/course/${course.course_id}`}>
+            <Card role="button" className="m-2" style={{ width: "300px" }}>
+              <h2 className="text-center py-5 border">{course.couse_code}</h2>
+              <Card.Body>
+                <Card.Title>{course.course_title}</Card.Title>
+                <Card.Text>{course.instructor}</Card.Text>
+              </Card.Body>
+            </Card>
+          </Link>
+        );
+      })}
+    </Container>
+  );
+};
+
+export default CoursesWidget;

frontend/src/pages/HomePage.jsx

@@ -1,5 +1,6 @@
 import { useContext } from "react";
 import { Container } from "react-bootstrap";
+import CoursesWidget from "../components/CoursesWidget";
 import MyNavbar from "../components/MyNavbar";
 import UserContext from "../contexts/UserContext";
 
@@ -13,6 +14,13 @@ const HomePage = () => {
         <div>
           <h1>Welcome back {currentUser?.username}!</h1>
         </div>
+        <br />
+        <br />
+        <br />
+        <div>
+          <h2>Courses</h2>
+          <CoursesWidget className="ms-0 w-75 border" />
+        </div>
       </Container>
     </div>
   );

frontend/src/pages/LoginPage.jsx

@@ -3,7 +3,7 @@ import { Button, Col, Container, Form, Row, Alert } from "react-bootstrap";
 import { Link, useLocation } from "wouter";
 import MyNavbar from "../components/MyNavbar";
 import UserContext from "../contexts/UserContext";
-import { makeRequest } from "../utils.ts";
+import { sendLogoutRequest, sendLoginRequest } from "../utils.ts";
 
 const LoginPage = () => {
   const [username, setUsername] = useState("");
@@ -15,29 +15,28 @@ const LoginPage = () => {
 
   useEffect(() => {
     if (currentUser?.id) {
-      gotoHome();
-    }
-  }, [currentUser]);
-
-  const gotoHome = () => {
       setLocation("/");
-  };
+    }
+  }, [currentUser, setLocation]);
 
-  const sendLoginRequest = async (e) => {
+  const formCb = async (e) => {
     e?.preventDefault();
-    await makeRequest({
+    const res = await sendLoginRequest(username, password);
-      url: "http://localhost:5000/login",
+
-      method: "POST",
+    if (res?.isError) {
-      body: { username, password },
+      if (res.message.includes("already")) {
-    })
+        setError({
-      .then((resp) => resp.json())
+          ...res,
-      .then((data) => {
+          message: "An error occured. Try logging in again.",
-        if (data.error) {
+        });
-          setError(data);
+        await sendLogoutRequest();
         return;
       }
-        setCurrentUser(data);
+      setError(res);
-      });
+      return;
+    }
+    setCurrentUser(res);
+    setLocation("/");
   };
 
   return (
@@ -53,7 +52,7 @@ const LoginPage = () => {
         )}
         <h2>Login</h2>
         <br />
-        <Form onSubmit={sendLoginRequest}>
+        <Form onSubmit={formCb}>
           <Form.Group as={Row} className="mb-3" controlId="username">
             <Form.Label column sm={2} className="me-2">
               Username

frontend/src/pages/LogoutPage.jsx

@@ -3,23 +3,18 @@ import { useContext, useEffect } from "react";
 import { Container } from "react-bootstrap";
 import MyNavbar from "../components/MyNavbar";
 import UserContext from "../contexts/UserContext";
-import { makeRequest } from "../utils.ts";
+import { sendLogoutRequest } from "../utils.ts";
 
 const LogoutPage = () => {
   const { setCurrentUser } = useContext(UserContext);
   useEffect(() => {
-    const cleanup = async () => {
+    (async () => {
-      await makeRequest({
+      await sendLogoutRequest();
-        url: "http://localhost:5000/logout",
-        method: "POST",
-      });
-
       await setCurrentUser({});
       localStorage.removeItem("currentUser");
       window.location.href = "/login";
-    };
+    })();
-    cleanup();
+  }, [setCurrentUser]);
-  }, []);
 
   return (
     <React.Fragment>

frontend/src/utils.ts

@@ -1,4 +1,4 @@
-const makeRequest = ({ url, method, body }): Promise<Response> => {
+const makeRequest = ({ url, method, body = {} }): Promise<Response> => {
   return fetch(url, {
     method: method,
     credentials: "include",
@@ -8,4 +8,41 @@ const makeRequest = ({ url, method, body }): Promise<Response> => {
   });
 };
 
-export { makeRequest };
+const sendLoginRequest = async (
+  username: string,
+  password: string
+): Promise<object> => {
+  const p: Promise<object> = new Promise(async (res) => {
+    await makeRequest({
+      url: "http://localhost:5000/login",
+      method: "POST",
+      body: { username, password },
+    })
+      .then((resp) => resp.json())
+      .then((data) => {
+        if (data.error) {
+          res({ isError: true, ...data });
+        }
+        res({ isError: false, ...data });
+      });
+    res({ isError: true });
+  });
+  return p;
+};
+
+const sendLogoutRequest = async (): Promise<object> => {
+  const p: Promise<object> = new Promise(async (res) => {
+    await makeRequest({
+      url: "http://localhost:5000/logout",
+      method: "POST",
+    })
+      .then((resp) => resp.json())
+      .then((data) => {
+        res({ isError: false, ...data });
+      });
+    res({ isError: true });
+  });
+  return p;
+};
+
+export { makeRequest, sendLoginRequest, sendLogoutRequest };