Added alerts to login and signup pate

controllers/web/endpoints.py

@@ -15,22 +15,25 @@ def welcome_page():
 ### LOGIN FUNCTIONALITY
 # Function responsible for delivering the Login page for the site
 @blueprint.route('/login')
-def display_login():
-    return render_template('index.html', content="login.html", user = session.get('user'))
+def display_login(error: str = None):
+    return render_template('index.html', content="login.html", user = session.get('user'), error = error)
 
 # Function responsible for handling logins to the site
 @blueprint.post('/login')
 def login():
     database = UserController()
     user = database.read(request.form['username'])
+    error = None
 
     # No user found
     if user == None:
-        return redirect("/login")
+        error = "No user found with the username " + request.form['username']
+        return display_login(error)
     
     # Incorrect Password
     if sha512(request.form['password'].encode()).hexdigest() != user.password:
-        return redirect("/login")
+        error = "Incorrect Password"
+        return display_login(error)
 
     session['user'] = user.username
     return redirect("/")
@@ -39,8 +42,8 @@ def login():
 ### SIGNUP FUNCTIONALITY
 # Function responsible for delivering the Signup page for the site
 @blueprint.route('/signup')
-def display_signup():
-    return render_template('index.html', content="signup.html", user = session.get('user'))
+def display_signup(error: str = None):
+    return render_template('index.html', content="signup.html", user = session.get('user'), error = error)
 
 # Function responsible for handling signups to the site
 @blueprint.post('/signup')