Implement dark mode

tin/apps/users/forms.py

@@ -6,3 +6,7 @@
 class UserMultipleChoiceField(forms.ModelMultipleChoiceField):
     def label_from_instance(self, user):  # pylint: disable=arguments-differ
         return f"{user.full_name} ({user.username})"
+
+
+class ThemeForm(forms.Form):
+    dark_mode = forms.IntegerField()

tin/apps/users/migrations/0003_user_dark_mode.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.15 on 2024-09-03 19:43
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0002_remove_user_is_sysadmin'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='dark_mode',
+            field=models.IntegerField(default=0),
+        ),
+    ]

tin/apps/users/models.py

@@ -30,6 +30,7 @@ class User(AbstractBaseUser, PermissionsMixin):
     is_teacher = models.BooleanField(default=False)
     is_student = models.BooleanField(default=False)
     date_joined = models.DateTimeField(default=timezone.now)
+    dark_mode = models.IntegerField(default=0)
 
     USERNAME_FIELD = "username"
     REQUIRED_FIELDS = ["email"]

tin/apps/users/urls.py

@@ -0,0 +1,11 @@
+from __future__ import annotations
+
+from django.urls import path
+
+from . import views
+
+app_name = "users"
+
+urlpatterns = [
+    path("theme/", views.change_theme, name="theme"),
+]

tin/apps/users/views.py

@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from django import http
+from django.contrib.auth.decorators import login_required
+
+from tin.apps.users.forms import ThemeForm
+
+
+@login_required
+def change_theme(request):
+    if request.method == "POST":
+        form = ThemeForm(request.POST)
+        if form.is_valid():
+            request.user.dark_mode = form.cleaned_data["dark_mode"]
+            request.user.save()
+            return http.JsonResponse({"success": True})
+        else:
+            return http.JsonResponse({"success": False, "errors": form.errors}, status=400)
+    raise http.Http404

tin/static/css/base.css

@@ -7,6 +7,7 @@
   color: white;
   line-height: 40px;
   background: #4fab4f;
+  position: relative;
 }
 
 #nav ul {
@@ -413,3 +414,19 @@ ul.errors {
     white-space: pre-wrap;
   }
 }
+
+#theme-toggle {
+  width: 30px;
+  height: 30px;
+}
+
+.theme-toggle-button {
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  padding: 0;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-85%, 12%);
+}

tin/templates/base.html

@@ -8,6 +8,10 @@
   {% include "meta.html" %}
 
   <link rel="stylesheet" href="{% static 'css/base.css' %}">
+  {% if request.user.dark_mode == 1 %}
+    <link rel="stylesheet" href="{% static 'css/dark/base.css' %}">
+    <link rel="stylesheet" href="{% static 'css/dark/edit.css' %}">
+  {% endif %}
   <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
   <link rel="stylesheet" type="text/css"
         href="https://fonts.googleapis.com/css?family=Open+Sans:100italic,400italic,700italic,100,400,700"/>
@@ -44,8 +48,56 @@
           $(".continuous-progress").css({height: "15px"}).progressbar({value: false})
       });
   </script>
+  <script>
+      function changeTheme() {
+      const $themeToggle = $('#theme-toggle use');
+      const isDarkMode = $themeToggle.attr('href') === '#svg-moon';
+
+      $themeToggle.attr('href', isDarkMode ? '#svg-sun' : '#svg-moon');
+
+      $.post(
+          "{% url 'users:theme' %}",
+          {
+              dark_mode: isDarkMode ? 1 : 0,
+              csrfmiddlewaretoken: "{{ csrf_token }}"
+          },
+          function () {
+              location.reload();
+          }
+       );
+    }
+  </script>
   {% block head %}{% endblock %}
 </head>
+<div style="display: none">
+    <svg>
+        <symbol id="svg-sun" viewBox="0 0 24 24">
+            <title>Light mode</title>
+            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="white"
+              stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="feather-sun">
+              <circle cx="12" cy="12" r="5"></circle>
+              <line x1="12" y1="1" x2="12" y2="3"></line>
+              <line x1="12" y1="21" x2="12" y2="23"></line>
+              <line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line>
+              <line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line>
+              <line x1="1" y1="12" x2="3" y2="12"></line>
+              <line x1="21" y1="12" x2="23" y2="12"></line>
+              <line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line>
+              <line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line>
+            </svg>
+        </symbol>
+    </svg>
+    <svg>
+        <symbol id="svg-moon" viewBox="0 0 24 24">
+        <title>Dark mode</title>
+        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="white"
+          stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="icon-tabler-moon">
+          <path stroke="none" d="M0 0h24v24H0z" fill="none" />
+          <path d="M12 3c.132 0 .263 0 .393 0a7.5 7.5 0 0 0 7.92 12.446a9 9 0 1 1 -8.313 -12.454z" />
+        </svg>
+  </symbol>
+    </svg>
+</div>
 
 <body>
 
@@ -90,6 +142,13 @@
       {% endif %}
       <li class="right"><i class="fa fa-sign-out"></i><a href="{% url 'auth:logout' %}">Logout
         ({{ request.user.username }})</a></li>
+      <li class="right">
+        <button class="theme-toggle-button" onclick="changeTheme()">
+            <svg id="theme-toggle">
+                <use href="{% if request.user.dark_mode == 1 %}#svg-sun{% else %}#svg-moon{% endif %}"></use>
+            </svg>
+        </button>
+      </li>
     {% endif %}
   </ul>
 </div>

tin/urls.py

@@ -32,6 +32,7 @@
     path("docs/", include("tin.apps.docs.urls", namespace="docs")),
     path("", include("tin.apps.auth.urls", namespace="auth")),
     path("", include("social_django.urls", namespace="social")),
+    path("", include("tin.apps.users.urls", namespace="users")),
 ]
 
 handler404 = handle_404_view