include only subscribed users and their direct relations in the galaxy

Embed the timetable generator in the sith

com/static/com/css/news-list.scss

@@ -83,7 +83,8 @@
     #links_content {
       overflow: auto;
       box-shadow: $shadow-color 1px 1px 1px;
-      height: 20em;
+      min-height: 20em;
+      padding-bottom: 1em;
 
       h4 {
         margin-left: 5px;

com/templates/com/macros.jinja

@@ -76,18 +76,20 @@
               It will stay hidden for other users until it has been published.
             {% endtrans %}
           </p>
-          {% if user.has_perm("com.moderate_news") %}
+          {%- if user.has_perm("com.moderate_news") -%}
             {# This is an additional query for each non-moderated news,
             but it will be executed only for admin users, and only one time
-            (if they do their job and moderated news as soon as they see them),
+            (if they do their job and moderate news as soon as they see them),
             so it's still reasonable #}
             <div
-              {% if news is integer or news is string %}
+              {% if news is integer or news is string -%}
                 x-data="{ nbEvents: 0 }"
                 x-init="nbEvents = await nbToPublish()"
-              {% else %}
+              {%- elif news.is_published -%}
+                x-data="{ nbEvents: 0 }"
+              {%- else -%}
                 x-data="{ nbEvents: {{ news.dates.count() }} }"
-              {% endif %}
+              {%- endif -%}
             >
               <template x-if="nbEvents > 1">
                 <div>

com/templates/com/news_list.jinja

@@ -205,6 +205,10 @@
               <i class="fa-solid fa-graduation-cap fa-xl"></i>
               <a href="{{ url("pedagogy:guide") }}">{% trans %}UV Guide{% endtrans %}</a>
             </li>
+            <li>
+              <i class="fa-solid fa-calendar-days fa-xl"></i>
+              <a href="{{ url("timetable:generator") }}">{% trans %}Timetable{% endtrans %}</a>
+            </li>
             <li>
               <i class="fa-solid fa-magnifying-glass fa-xl"></i>
               <a href="{{ url("matmat:search_clear") }}">{% trans %}Matmatronch{% endtrans %}</a>

core/models.py

@@ -651,9 +651,6 @@ class User(AbstractUser):
 
 
 class AnonymousUser(AuthAnonymousUser):
-    def __init__(self):
-        super().__init__()
-
     @property
     def was_subscribed(self):
         return False
@@ -662,10 +659,6 @@ class AnonymousUser(AuthAnonymousUser):
     def is_subscribed(self):
         return False
 
-    @property
-    def subscribed(self):
-        return False
-
     @property
     def is_root(self):
         return False

core/templates/core/base/header.jinja

@@ -77,22 +77,22 @@
         <div class="notification" x-data="{display: false}" :class="{white: display}">
           <a href="#" @click.prevent="display = !display">
             <i :class="`fa-${display ? 'solid': 'regular'} fa-bell`" x-transition></i>
-            {% set notification_count = user.notifications.filter(viewed=False).count() %}
+            {% set notifications = user.notifications.filter(viewed=False).order_by("-date")|list %}
 
-            {% if notification_count > 0 %}
+            {%- if notifications|length > 0 -%}
               <span>
-                {% if notification_count < 100 %}
+                {% if notifications|length < 100 %}
-                  {{ notification_count }}
+                  {{ notifications|length }}
-                {% else %}
+                {%- else -%}
-                  &nbsp;
+                  99+
-                {% endif %}
+                {%- endif -%}
               </span>
             {% endif %}
           </a>
           <div id="header_notif" x-show="display" x-cloak x-transition @click.outside="display = false">
             <ul>
-              {% if user.notifications.filter(viewed=False).count() > 0 %}
+              {%- if notifications|length > 0 -%}
-                {% for n in user.notifications.filter(viewed=False).order_by('-date') %}
+                {%- for n in notifications -%}
                   <li>
                     <a href="{{ url("core:notification", notif_id=n.id) }}">
                       <div class="datetime">
@@ -108,10 +108,10 @@
                       </div>
                     </a>
                   </li>
-                {% endfor %}
+                {%- endfor -%}
-              {% else %}
+              {%- else -%}
                 <li class="empty-notification">{% trans %}You do not have any unread notification{% endtrans %}</li>
-              {% endif %}
+              {%- endif -%}
             </ul>
             <div class="options">
               <a href="{{ url('core:notification_list') }}">

core/templates/core/widgets/autocomplete_select.jinja

@@ -1,3 +1,4 @@
+{% spaceless %}
   {% for js in statics.js %}
     <script-once type="module" src="{{ js }}"></script-once>
   {% endfor %}
@@ -21,3 +22,4 @@
     <slot style="display:none" name="initial">{{ initial }}</slot>
   {% endif %}
   </{{ component }}>
+{% endspaceless %}

counter/static/counter/css/counter-click.scss

@@ -39,6 +39,7 @@
   flex: auto;
   margin: 0.2em;
   width: 20%;
+  min-width: 350px;
 
   ul {
     list-style-type: none;

counter/templates/counter/counter_click.jinja

@@ -67,13 +67,13 @@
                 <option value="FIN">{% trans %}Confirm (FIN){% endtrans %}</option>
                 <option value="ANN">{% trans %}Cancel (ANN){% endtrans %}</option>
               </optgroup>
-              {% for category in categories.keys() %}
+              {%- for category in categories.keys() -%}
                 <optgroup label="{{ category }}">
-                  {% for product in categories[category] %}
+                  {%- for product in categories[category] -%}
                     <option value="{{ product.id }}">{{ product }}</option>
-                  {% endfor %}
+                  {%- endfor -%}
                 </optgroup>
-              {% endfor %}
+              {%- endfor -%}
             </counter-product-select>
 
             <input type="submit" value="{% trans %}Go{% endtrans %}"/>

galaxy/management/commands/rule_galaxy.py

@@ -45,8 +45,9 @@ class Command(BaseCommand):
                 "verbosity level should be between 0 and 2 included", stacklevel=2
             )
 
-        if options["verbosity"] == 2:
+        if options["verbosity"] >= 2:
             logger.setLevel(logging.DEBUG)
+            logging.getLogger("django.db.backends").setLevel(logging.DEBUG)
         elif options["verbosity"] == 1:
             logger.setLevel(logging.INFO)
         else:
@@ -59,6 +60,3 @@ class Command(BaseCommand):
         Galaxy.objects.filter(state__isnull=True).delete()
 
         logger.info("Ruled the galaxy in {} queries.".format(len(connection.queries)))
-        if options["verbosity"] > 2:
-            for q in connection.queries:
-                logger.debug(q)

galaxy/models.py

@@ -31,13 +31,14 @@ from collections import defaultdict
 from typing import NamedTuple, TypedDict
 
 from django.db import models
-from django.db.models import Count, F, Q, QuerySet
+from django.db.models import Count, Exists, F, OuterRef, Q, QuerySet
-from django.utils.timezone import localdate
+from django.utils.timezone import localdate, now
 from django.utils.translation import gettext_lazy as _
 
 from club.models import Membership
 from core.models import User
 from sas.models import PeoplePictureRelation, Picture
+from subscription.models import Subscription
 
 
 class GalaxyStar(models.Model):
@@ -198,8 +199,16 @@ class Galaxy(models.Model):
         cls, picture_count_threshold: int = DEFAULT_PICTURE_COUNT_THRESHOLD
     ) -> QuerySet[User]:
         return (
-            User.objects.exclude(subscriptions=None)
+            User.objects.filter(is_subscriber_viewable=True)
-            .annotate(pictures_count=Count("pictures"))
+            .exclude(subscriptions=None)
+            .annotate(
+                pictures_count=Count("pictures"),
+                is_active_in_galaxy=Exists(
+                    Subscription.objects.filter(
+                        member=OuterRef("id"), subscription_end__gt=now()
+                    )
+                ),
+            )
             .filter(pictures_count__gt=picture_count_threshold)
             .distinct()
         )
@@ -290,9 +299,9 @@ class Galaxy(models.Model):
         31/12/2022 (also two years, but with an offset of one year), then their
         club score is 365.
         """
-        memberships = user.memberships.only("start_date", "end_date", "club_id")
+        memberships = user.memberships.values("start_date", "end_date", "club_id")
         result = defaultdict(int)
-        now = localdate()
+        today = localdate()
         for membership in memberships:
             # This is a N+1 query, but 92% of galaxy users have less than 10 memberships.
             # Only 5 users have more than 30 memberships.
@@ -300,23 +309,23 @@ class Galaxy(models.Model):
                 Membership.objects.exclude(user=user)
                 .filter(
                     Q(  # start2 <= start1 <= end2
-                        start_date__lte=membership.start_date,
+                        start_date__lte=membership["start_date"],
-                        end_date__gte=membership.start_date,
+                        end_date__gte=membership["start_date"],
                     )
-                    | Q(  # start2 <= start1 <= now
+                    | Q(  # start2 <= start1 <= today
-                        start_date__lte=membership.start_date, end_date=None
+                        start_date__lte=membership["start_date"], end_date=None
                     )
                     | Q(  # start1 <= start2 <= end2
-                        start_date__gte=membership.start_date,
+                        start_date__gte=membership["start_date"],
-                        start_date__lte=membership.end_date or now,
+                        start_date__lte=membership["end_date"] or today,
                     ),
-                    club_id=membership.club_id,
+                    club_id=membership["club_id"],
                 )
                 .only("start_date", "end_date", "user_id")
             )
             for other in common_memberships:
-                start = max(membership.start_date, other.start_date)
+                start = max(membership["start_date"], other.start_date)
-                end = min(membership.end_date or now, other.end_date or now)
+                end = min(membership["end_date"] or today, other.end_date or today)
                 result[other.user_id] += (end - start).days * cls.CLUBS_POINTS
         return result
 
@@ -382,18 +391,22 @@ class Galaxy(models.Model):
         # this is memory expensive but prevents a lot of db hits, therefore
         # is far more time efficient
 
-        rulable_users = list(self.get_rulable_users(picture_count_threshold))
+        rulable_users_qs = self.get_rulable_users(picture_count_threshold)
-        rulable_users_count = len(rulable_users)
+        active_users_count = rulable_users_qs.filter(is_active_in_galaxy=True).count()
+        rulable_users = list(rulable_users_qs)
         user1_count = 0
         self.logger.info(
-            f"{rulable_users_count} citizen have been listed. Starting to rule."
+            f" {len(rulable_users)} citizens (with {active_users_count} active ones) "
+            f"have been listed. Starting to rule."
         )
 
         self.logger.info("Creating stars for all citizen")
         individual_scores = self.compute_individual_scores()
         GalaxyStar.objects.bulk_create(
             [
-                GalaxyStar(owner=user, galaxy=self, mass=individual_scores[user.id])
+                GalaxyStar(
+                    owner_id=user.id, galaxy=self, mass=individual_scores[user.id]
+                )
                 for user in rulable_users
             ]
         )
@@ -405,9 +418,9 @@ class Galaxy(models.Model):
         t_global_start = time.time()
         while len(rulable_users) > 0:
             user1 = rulable_users.pop()
+            if not user1.is_active_in_galaxy:
+                continue
             user1_count += 1
-            rulable_users_count2 = len(rulable_users)
-
             star1 = stars[user1.id]
 
             lanes = []
@@ -448,17 +461,20 @@ class Galaxy(models.Model):
                 self.logger.info("")
                 self.logger.info(f" Ruling of {self} ".center(60, "#"))
                 self.logger.info(
-                    f"Progression: {user1_count}/{rulable_users_count} "
+                    f"Progression: {user1_count}/{active_users_count} "
-                    f"citizen -- {rulable_users_count - user1_count} remaining"
+                    f"citizen -- {active_users_count - user1_count} remaining"
                 )
                 self.logger.info(f"Speed: {global_avg_speed:.2f} citizen per second")
-                eta = rulable_users_count2 // global_avg_speed
+                eta = len(rulable_users) // global_avg_speed
                 self.logger.info(
                     f"ETA: {int(eta // 60 % 60)} minutes {int(eta % 60)} seconds"
                 )
                 self.logger.info("#" * 60)
             t_global_start = time.time()
 
+        count, _ = self.stars.filter(Q(lanes1=None) & Q(lanes2=None)).delete()
+        self.logger.info(f"{count} orphan stars have been trimmed.")
+
         # Here, we get the IDs of the old galaxies that we'll need to delete. In normal operation, only one galaxy
         # should be returned, and we can't delete it yet, as it's the one still displayed by the Sith.
         old_galaxies_pks = list(

galaxy/tests.py

@@ -122,7 +122,7 @@ class TestGalaxyModel(TestCase):
             self.com,
         ]
 
-        with self.assertNumQueries(44):
+        with self.assertNumQueries(38):
             while len(users) > 0:
                 user1 = users.pop(0)
                 family_scores = Galaxy.compute_user_family_score(user1)
@@ -150,7 +150,7 @@ class TestGalaxyModel(TestCase):
         that the number of queries to rule the galaxy is stable.
         """
         galaxy = Galaxy.objects.create()
-        with self.assertNumQueries(39):
+        with self.assertNumQueries(36):
             galaxy.rule(0)  # We want everybody here
 
 

locale/fr/LC_MESSAGES/django.po

@@ -1061,6 +1061,10 @@ msgstr "Nos services"
 msgid "UV Guide"
 msgstr "Guide des UVs"
 
+#: com/templates/com/news_list.jinja
+msgid "Timetable"
+msgstr "Emploi du temps"
+
 #: com/templates/com/news_list.jinja core/templates/core/base/navbar.jinja
 msgid "Matmatronch"
 msgstr "Matmatronch"
@@ -5236,6 +5240,18 @@ msgstr "Membre existant"
 msgid "the groups that can create subscriptions"
 msgstr "les groupes pouvant créer des cotisations"
 
+#: timetable/templates/timetable/generator.jinja
+msgid "Timetable generator"
+msgstr "Générateur d'emploi du temps"
+
+#: timetable/templates/timetable/generator.jinja
+msgid "Generate"
+msgstr "Générer"
+
+#: timetable/templates/timetable/generator.jinja
+msgid "Save to PNG"
+msgstr "Sauver en PNG"
+
 #: trombi/models.py
 msgid "subscription deadline"
 msgstr "fin des inscriptions"

package-lock.json

@@ -29,6 +29,7 @@
         "d3-force-3d": "^3.0.5",
         "easymde": "^2.19.0",
         "glob": "^11.0.0",
+        "html2canvas": "^1.4.1",
         "htmx.org": "^2.0.3",
         "js-cookie": "^3.0.5",
         "lit-html": "^3.3.0",
@@ -3105,6 +3106,15 @@
         "@babel/core": "^7.4.0 || ^8.0.0-0 <8.0.0"
       }
     },
+    "node_modules/base64-arraybuffer": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-1.0.2.tgz",
+      "integrity": "sha512-I3yl4r9QB5ZRY3XuJVEPfc2XhZO6YweFPI+UovAzn+8/hb3oJ6lnysaFcjVpkCPfVWFUDvoZ8kmVDP7WyRtYtQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6.0"
+      }
+    },
     "node_modules/binary-extensions": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.3.0.tgz",
@@ -3493,6 +3503,15 @@
         "node": ">= 8"
       }
     },
+    "node_modules/css-line-break": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/css-line-break/-/css-line-break-2.1.0.tgz",
+      "integrity": "sha512-FHcKFCZcAha3LwfVBhCQbW2nCNbkZXn7KVUJcsT5/P8YmfsVja0FMPJr0B903j/E69HUphKiV9iQArX8SDYA4w==",
+      "license": "MIT",
+      "dependencies": {
+        "utrie": "^1.0.2"
+      }
+    },
     "node_modules/cytoscape": {
       "version": "3.33.1",
       "resolved": "https://registry.npmjs.org/cytoscape/-/cytoscape-3.33.1.tgz",
@@ -4165,6 +4184,19 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/html2canvas": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/html2canvas/-/html2canvas-1.4.1.tgz",
+      "integrity": "sha512-fPU6BHNpsyIhr8yyMpTLLxAbkaK8ArIBcmZIRiBLiDhjeqvXolaEmDGmELFuX9I4xDcaKKcJl+TKZLqruBbmWA==",
+      "license": "MIT",
+      "dependencies": {
+        "css-line-break": "^2.1.0",
+        "text-segmentation": "^1.0.3"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
     "node_modules/htmx.org": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/htmx.org/-/htmx.org-2.0.6.tgz",
@@ -5454,6 +5486,15 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/text-segmentation": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/text-segmentation/-/text-segmentation-1.0.3.tgz",
+      "integrity": "sha512-iOiPUo/BGnZ6+54OsWxZidGCsdU8YbE4PSpdPinp7DeMtUJNJBoJ/ouUSTJjHkh1KntHaltHl/gDs2FC4i5+Nw==",
+      "license": "MIT",
+      "dependencies": {
+        "utrie": "^1.0.2"
+      }
+    },
     "node_modules/three": {
       "version": "0.177.0",
       "resolved": "https://registry.npmjs.org/three/-/three-0.177.0.tgz",
@@ -5711,6 +5752,15 @@
         "browserslist": ">= 4.21.0"
       }
     },
+    "node_modules/utrie": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/utrie/-/utrie-1.0.2.tgz",
+      "integrity": "sha512-1MLa5ouZiOmQzUbjbu9VmjLzn1QLXBhwpUa7kdLUQK+KQ5KA9I1vk5U4YHe/X2Ch7PYnJfWuWT+VbuxbGwljhw==",
+      "license": "MIT",
+      "dependencies": {
+        "base64-arraybuffer": "^1.0.2"
+      }
+    },
     "node_modules/vite": {
       "version": "6.3.6",
       "resolved": "https://registry.npmjs.org/vite/-/vite-6.3.6.tgz",

package.json

@@ -59,6 +59,7 @@
     "d3-force-3d": "^3.0.5",
     "easymde": "^2.19.0",
     "glob": "^11.0.0",
+    "html2canvas": "^1.4.1",
     "htmx.org": "^2.0.3",
     "js-cookie": "^3.0.5",
     "lit-html": "^3.3.0",

sith/settings.py

@@ -125,6 +125,7 @@ INSTALLED_APPS = (
     "pedagogy",
     "galaxy",
     "antispam",
+    "timetable",
     "api",
 )
 

sith/urls.py

@@ -53,6 +53,7 @@ urlpatterns = [
     path("i18n/", include("django.conf.urls.i18n")),
     path("jsi18n/", JavaScriptCatalog.as_view(), name="javascript-catalog"),
     path("captcha/", include("captcha.urls")),
+    path("edt/", include(("timetable.urls", "timetable"), namespace="timetable")),
 ]
 
 if settings.DEBUG:

timetable/admin.py

@@ -0,0 +1 @@
+# Register your models here.

timetable/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class TimetableConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "timetable"

timetable/models.py

@@ -0,0 +1 @@
+# Create your models here.

timetable/static/bundled/timetable/generator-index.ts

@@ -0,0 +1,184 @@
+import html2canvas from "html2canvas";
+
+// see https://regex101.com/r/QHSaPM/2
+const TIMETABLE_ROW_RE: RegExp =
+  /^(?<ueCode>\w.+\w)\s+(?<courseType>[A-Z]{2}\d)\s+((?<weekGroup>[AB])\s+)?(?<weekday>(lundi)|(mardi)|(mercredi)|(jeudi)|(vendredi)|(samedi)|(dimanche))\s+(?<startHour>\d{2}:\d{2})\s+(?<endHour>\d{2}:\d{2})\s+[\dA-B]\s+((?<attendance>[\wé]*)\s+)?(?<room>\w+(?:, \w+)?)$/;
+
+const DEFAULT_TIMETABLE: string = `DS52\t\tCM1\t\tlundi\t08:00\t10:00\t1\tPrésentiel\tA113
+DS53\t\tCM1\t\tlundi\t10:15\t12:15\t1\tPrésentiel\tA101
+DS53\t\tTP1\t\tlundi\t13:00\t16:00\t1\tPrésentiel\tH010
+SO03\t\tCM1\t\tlundi\t16:15\t17:45\t1\tPrésentiel\tA103
+SO03\t\tTD1\t\tlundi\t17:45\t19:45\t1\tPrésentiel\tA103
+DS50\t\tTP1\t\tmardi\t08:00\t10:00\t1\tPrésentiel\tA216
+DS51\t\tCM1\t\tmardi\t10:15\t12:15\t1\tPrésentiel\tA216
+DS51\t\tTP1\t\tmardi\t14:00\t18:00\t1\tPrésentiel\tH010
+DS52\t\tTP2\tA\tjeudi\t08:00\t10:00\tA\tPrésentiel\tA110a, A110b
+DS52\t\tTD1\t\tjeudi\t10:15\t12:15\t1\tPrésentiel\tA110a, A110b
+LC02\t\tTP1\t\tjeudi\t15:00\t16:00\t1\tPrésentiel\tA209
+LC02\t\tTD1\t\tjeudi\t16:15\t18:15\t1\tPrésentiel\tA206`;
+
+type WeekDay =
+  | "lundi"
+  | "mardi"
+  | "mercredi"
+  | "jeudi"
+  | "vendredi"
+  | "samedi"
+  | "dimanche";
+
+const WEEKDAYS = [
+  "lundi",
+  "mardi",
+  "mercredi",
+  "jeudi",
+  "vendredi",
+  "samedi",
+  "dimanche",
+] as const;
+
+const SLOT_HEIGHT = 20 as const; // Each 15min has a height of 20px in the timetable
+const SLOT_WIDTH = 250 as const; // Each weekday ha a width of 400px in the timetable
+const MINUTES_PER_SLOT = 15 as const;
+
+interface TimetableSlot {
+  courseType: string;
+  room: string;
+  startHour: string;
+  endHour: string;
+  startSlot: number;
+  endSlot: number;
+  ueCode: string;
+  weekGroup?: string;
+  weekday: WeekDay;
+}
+
+function parseSlots(s: string): TimetableSlot[] {
+  return s
+    .split("\n")
+    .filter((s: string) => s.length > 0)
+    .map((row: string) => {
+      const parsed = TIMETABLE_ROW_RE.exec(row);
+      if (!parsed) {
+        throw new Error(`Couldn't parse row ${row}`);
+      }
+      const [startHour, startMin] = parsed.groups.startHour
+        .split(":")
+        .map((i) => Number.parseInt(i));
+      const [endHour, endMin] = parsed.groups.endHour
+        .split(":")
+        .map((i) => Number.parseInt(i));
+      return {
+        ...parsed.groups,
+        startSlot: Math.floor((startHour * 60 + startMin) / MINUTES_PER_SLOT),
+        endSlot: Math.floor((endHour * 60 + endMin) / MINUTES_PER_SLOT),
+      } as unknown as TimetableSlot;
+    });
+}
+
+document.addEventListener("alpine:init", () => {
+  Alpine.data("timetableGenerator", () => ({
+    content: DEFAULT_TIMETABLE,
+    error: "",
+    displayedWeekdays: [] as WeekDay[],
+    courses: [] as TimetableSlot[],
+    startSlot: 0,
+    endSlot: 0,
+    table: {
+      height: 0,
+      width: 0,
+    },
+
+    colors: {} as Record<string, string>,
+    colorPalette: [
+      "#27ae60",
+      "#2980b9",
+      "#c0392b",
+      "#7f8c8d",
+      "#f1c40f",
+      "#1abc9c",
+      "#95a5a6",
+      "#26C6DA",
+      "#c2185b",
+      "#e64a19",
+      "#1b5e20",
+    ],
+
+    generate() {
+      try {
+        this.courses = parseSlots(this.content);
+      } catch {
+        this.error = gettext(
+          "Wrong timetable format. Make sure you copied if from your student folder.",
+        );
+        return;
+      }
+
+      // color each UE
+      let colorIndex = 0;
+      for (const slot of this.courses) {
+        if (!this.colors[slot.ueCode]) {
+          this.colors[slot.ueCode] =
+            this.colorPalette[colorIndex % this.colorPalette.length];
+          colorIndex++;
+        }
+      }
+
+      this.displayedWeekdays = WEEKDAYS.filter((day) =>
+        this.courses.some((slot: TimetableSlot) => slot.weekday === day),
+      );
+      this.startSlot = this.courses.reduce(
+        (acc: number, curr: TimetableSlot) => Math.min(acc, curr.startSlot),
+        25 * 4,
+      );
+      this.endSlot = this.courses.reduce(
+        (acc: number, curr: TimetableSlot) => Math.max(acc, curr.endSlot),
+        1,
+      );
+      this.table.height = SLOT_HEIGHT * (this.endSlot - this.startSlot);
+      this.table.width = SLOT_WIDTH * this.displayedWeekdays.length;
+    },
+
+    getStyle(slot: TimetableSlot) {
+      const hasWeekGroup = slot.weekGroup !== undefined;
+      const width = hasWeekGroup ? SLOT_WIDTH / 2 : SLOT_WIDTH;
+      const leftOffset = slot.weekGroup === "B" ? SLOT_WIDTH / 2 : 0;
+      return {
+        height: `${(slot.endSlot - slot.startSlot) * SLOT_HEIGHT}px`,
+        width: `${width}px`,
+        top: `${(slot.startSlot - this.startSlot) * SLOT_HEIGHT}px`,
+        left: `${this.displayedWeekdays.indexOf(slot.weekday) * SLOT_WIDTH + leftOffset}px`,
+        backgroundColor: this.colors[slot.ueCode],
+      };
+    },
+
+    getHours(): [string, object][] {
+      let hour: number = Number.parseInt(
+        this.courses
+          .map((c: TimetableSlot) => c.startHour)
+          .reduce((res: string, hour: string) => (hour < res ? hour : res), "24:00")
+          .split(":")[0],
+      );
+      const res: [string, object][] = [];
+      for (let i = 0; i <= this.endSlot - this.startSlot; i += 60 / MINUTES_PER_SLOT) {
+        res.push([`${hour}:00`, { top: `${i * SLOT_HEIGHT}px` }]);
+        hour += 1;
+      }
+      return res;
+    },
+
+    getWidth() {
+      return this.displayedWeekdays.length * SLOT_WIDTH + 20;
+    },
+
+    async savePng() {
+      const elem = document.getElementById("timetable");
+      const img = (await html2canvas(elem)).toDataURL();
+      const downloadLink = document.createElement("a");
+      downloadLink.href = img;
+      downloadLink.download = "edt.png";
+      document.body.appendChild(downloadLink);
+      downloadLink.click();
+      downloadLink.remove();
+    },
+  }));
+});

timetable/static/timetable/css/generator.scss

@@ -0,0 +1,67 @@
+@import "core/static/core/colors";
+
+#timetable {
+  --hour-side-width: 60px;
+
+  display: block;
+  margin: 2em auto;
+  .header {
+    background-color: $white-color;
+    font-weight: bold;
+    box-shadow: none;
+    width: calc(100% - var(--hour-side-width) - 10px);
+    margin-left: var(--hour-side-width);
+    padding-left: 0;
+    display: flex;
+    flex-direction: row;
+    gap: 0;
+    span {
+      flex: 1;
+      text-align: center;
+    }
+  }
+  .content {
+    position: relative;
+  }
+  .hours {
+    position: absolute;
+    width: 40px;
+    left: 0;
+    top: -.5em;
+
+    .hour {
+      position: absolute;
+
+      .hour-bar {
+        content: "";
+        position: absolute;
+        height: 1px;
+        background: lightgray;
+        top: 50%;
+        left: 100%;
+        margin-left: 10px;
+      }
+    }
+  }
+  .courses {
+    position: absolute;
+    text-align: center;
+    top: 0;
+    left: var(--hour-side-width);
+
+    .slot {
+      background-color: cadetblue;
+      position: absolute;
+      display: flex;
+      flex-direction: column;
+      justify-content: center;
+
+      .course-type {
+        position: absolute;
+        top: 0;
+        right: 0;
+        padding: 10px;
+      }
+    }
+  }
+}

timetable/templates/timetable/generator.jinja

@@ -0,0 +1,68 @@
+{% extends 'core/base.jinja' %}
+
+{%- block additional_css -%}
+  <link rel="stylesheet" href="{{ static('timetable/css/generator.scss') }}">
+{%- endblock -%}
+
+{%- block additional_js -%}
+  <script type="module" src="{{ static('bundled/timetable/generator-index.ts') }}"></script>
+{%- endblock -%}
+
+{% block title %}
+  {% trans %}Timetable generator{% endtrans %}
+{% endblock %}
+
+{% block content %}
+  <div x-data="timetableGenerator">
+    <form @submit.prevent="generate()">
+      <h1>Générateur d'emploi du temps</h1>
+      <div class="alert alert-red" x-show="!!error" x-cloak>
+        <span class="alert-main" x-text="error"></span>
+      </div>
+      <div class="form-group">
+        <label for="timetable-input">Colle ton emploi du temps (sans l'entête)</label>
+        <textarea id="timetable-input" cols="30" rows="15" x-model="content"></textarea>
+      </div>
+      <input type="submit" class="btn btn-blue" value="{% trans %}Generate{% endtrans %}">
+    </form>
+    <div
+      id="timetable"
+      x-show="table.height > 0 && table.width > 0"
+      :style="{width: `${table.width+80}px`, height: `${table.height+40}px`}"
+    >
+      <div class="header">
+        <template x-for="weekday in displayedWeekdays">
+          <span x-text="weekday"></span>
+        </template>
+      </div>
+      <div class="content">
+        <div class="hours" :height="(endSlot - endSlot%4) - (startSlot - startSlot%4)">
+          <template x-for="[hour, style] in getHours()">
+            <div class="hour" :style="style">
+              <div x-text="hour"></div>
+              <div class="hour-bar" :style="{width: `${getWidth()}px`}"></div>
+            </div>
+          </template>
+        </div>
+        <div class="courses">
+          <template x-for="course in courses">
+            <div class="slot" :style="getStyle(course)">
+              <span class="course-type" x-text="course.courseType"></span>
+              <span x-text="course.ueCode"></span>
+              <span x-text="`${course.startHour} - ${course.endHour}`"></span>
+              <span x-text="(course.weekGroup ? `\nGroupe ${course.weekGroup}` : '')"></span>
+              <span x-text="course.room"></span>
+            </div>
+          </template>
+        </div>
+      </div>
+    </div>
+    <button
+      class="margin-bottom btn btn-blue"
+      @click="savePng"
+      x-show="table.height > 0 && table.width > 0"
+    >
+      {% trans %}Save to PNG{% endtrans %}
+    </button>
+  </div>
+{% endblock content %}

timetable/tests.py

@@ -0,0 +1 @@
+# Create your tests here.

timetable/urls.py

@@ -0,0 +1,5 @@
+from django.urls import path
+
+from timetable.views import GeneratorView
+
+urlpatterns = [path("", GeneratorView.as_view(), name="generator")]

timetable/views.py

@@ -0,0 +1,8 @@
+# Create your views here.
+from django.views.generic import TemplateView
+
+from core.auth.mixins import FormerSubscriberMixin
+
+
+class GeneratorView(FormerSubscriberMixin, TemplateView):
+    template_name = "timetable/generator.jinja"