added login page

login/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

login/apps.py

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+from django.apps import AppConfig
+
+
+class LoginConfig(AppConfig):
+    name = 'login'

login/jinja2/login/index.html

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+{% extends "base.html" %}
+{% block title %}Login{% endblock %}
+{% block content %}
+<h1>Login</h1>
+<form method="post" action="{{ url('login:index') }}">
+	{{ csrf_input }}
+	<input type="text" placeholder="Username" name="username" maxlength="20" required/><br />
+	<input type="password" placeholder="Password" name="password" maxlength="1024" required/><br />
+	<input type="submit" value="Log in" name="submit"/>
+</form>
+{% endblock %}

login/models.py

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+from django.db import models
+
+# Create your models here.

login/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

login/urls.py

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+#!/usr/bin/env python3
+"""
+Login app URL configuration.
+"""
+from django.urls import path
+
+from . import views
+
+app_name = 'login'
+urlpatterns = [
+	path('', views.index, name='index'),
+]

login/views.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+"""
+/login app views.
+"""
+from django.contrib import messages
+from django.shortcuts import redirect, render
+from django.contrib.auth import authenticate, login
+
+def index(request):
+	"""
+	The login page.
+	"""
+	if request.method == "GET":
+		context = {}
+		return render(request, 'login/index.html', context)
+	username = request.POST['username']
+	password = request.POST['password']
+	user = authenticate(request, username=username, password=password)
+	if user is not None:
+		login(request, user)
+		messages.success(request, "Logged in")
+		return redirect('homepage:index')
+	else:
+		messages.error(request, "Invalid credentials")
+		return redirect('login:index')