Galaxy (#575)

Co-authored-by: Skia <florent.jacquet@eshard.com>

core/management/commands/check_front.py

@@ -6,8 +6,15 @@ from django.core.management.base import BaseCommand
 
 # see https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
 # added "v?"
+# Please note that this does not match the version of the three.js library.
+# Hence, you shall have to check this one by yourself
 semver_regex = re.compile(
-    """^v?(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)(?:-(?P<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"""
+    r"^v?"
+    r"(?P<major>\d+)"
+    r"\.(?P<minor>\d+)"
+    r"\.(?P<patch>\d+)"
+    r"(?:-(?P<prerelease>(?:\d+|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:\d+|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?"
+    r"(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"
 )
 
 

core/management/commands/populate.py

@@ -1,7 +1,7 @@
 # -*- coding:utf-8 -*
 #
-# Copyright 2016,2017
-# - Skia <skia@libskia.so>
+# Copyright 2016,2017,2023
+# - Skia <skia@hya.sk>
 #
 # Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
 # http://ae.utbm.fr.
@@ -25,6 +25,7 @@
 import os
 from datetime import date, datetime, timedelta
 from io import StringIO, BytesIO
+from pathlib import Path
 
 from django.contrib.auth.models import Permission
 from django.core.management.base import BaseCommand
@@ -54,6 +55,7 @@ from com.models import Sith, Weekmail, News, NewsDate
 from election.models import Election, Role, Candidature, ElectionList
 from forum.models import Forum, ForumTopic
 from pedagogy.models import UV
+from sas.models import Album, Picture, PeoplePictureRelation
 
 
 class Command(BaseCommand):
@@ -71,9 +73,7 @@ class Command(BaseCommand):
     def handle(self, *args, **options):
         os.environ["DJANGO_COLORS"] = "nocolor"
         Site(id=4000, domain=settings.SITH_URL, name=settings.SITH_NAME).save()
-        root_path = os.path.dirname(
-            os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
-        )
+        root_path = Path(__file__).parent.parent.parent.parent
         root_group, _ = Group.objects.get_or_create(name="Root")
         Group(name="Public").save()
         Group(name="Subscribers").save()
@@ -84,7 +84,7 @@ class Command(BaseCommand):
         Group(name="Banned from buying alcohol").save()
         Group(name="Banned from counters").save()
         Group(name="Banned to subscribe").save()
-        Group(name="SAS admin").save()
+        sas_admin, _ = Group.objects.get_or_create(name="SAS admin")
         Group(name="Forum admin").save()
         Group(name="Pedagogy admin").save()
         self.reset_index("core", "auth")
@@ -119,7 +119,8 @@ class Command(BaseCommand):
 
         club_root = SithFile(parent=None, name="clubs", is_folder=True, owner=root)
         club_root.save()
-        SithFile(parent=None, name="SAS", is_folder=True, owner=root).save()
+        sas = SithFile(parent=None, name="SAS", is_folder=True, owner=root)
+        sas.save()
         main_club = Club(
             id=1,
             name=settings.SITH_MAIN_CLUB["name"],
@@ -223,7 +224,15 @@ Welcome to the wiki page!
                 Group.objects.filter(name=settings.SITH_MAIN_MEMBERS_GROUP).first().id
             ]
             skia.save()
-            skia_profile_path = os.path.join(root_path, "core/fixtures/images/3.jpg")
+            skia_profile_path = (
+                root_path
+                / "core"
+                / "fixtures"
+                / "images"
+                / "sas"
+                / "Family"
+                / "skia.jpg"
+            )
             with open(skia_profile_path, "rb") as f:
                 name = str(skia.id) + "_profile.jpg"
                 skia_profile = SithFile(
@@ -233,7 +242,7 @@ Welcome to the wiki page!
                     owner=skia,
                     is_folder=False,
                     mime_type="image/jpeg",
-                    size=os.path.getsize(skia_profile_path),
+                    size=skia_profile_path.stat().st_size,
                 )
                 skia_profile.file.name = name
                 skia_profile.save()
@@ -351,23 +360,48 @@ Welcome to the wiki page!
             ]
             u.save()
             # Adding user Richard Batsbak
-            r = User(
+            richard = User(
                 username="rbatsbak",
                 last_name="Batsbak",
                 first_name="Richard",
                 email="richard@git.an",
                 date_of_birth="1982-06-12",
             )
-            r.set_password("plop")
-            r.save()
-            r.view_groups = [
+            richard.set_password("plop")
+            richard.save()
+            richard.godfathers.add(comptable)
+            richard_profile_path = (
+                root_path
+                / "core"
+                / "fixtures"
+                / "images"
+                / "sas"
+                / "Family"
+                / "richard.jpg"
+            )
+            with open(richard_profile_path, "rb") as f:
+                name = f"{richard.id}_profile.jpg"
+                richard_profile = SithFile(
+                    parent=profiles_root,
+                    name=name,
+                    file=resize_image(Image.open(BytesIO(f.read())), 400, "JPEG"),
+                    owner=richard,
+                    is_folder=False,
+                    mime_type="image/jpeg",
+                    size=richard_profile_path.stat().st_size,
+                )
+                richard_profile.file.name = name
+                richard_profile.save()
+                richard.profile_pict = richard_profile
+                richard.save()
+            richard.view_groups = [
                 Group.objects.filter(name=settings.SITH_MAIN_MEMBERS_GROUP).first().id
             ]
-            r.save()
+            richard.save()
             # Adding syntax help page
             p = Page(name="Aide_sur_la_syntaxe")
             p.save(force_lock=True)
-            with open(os.path.join(root_path) + "/doc/SYNTAX.md", "r") as rm:
+            with open(root_path / "doc" / "SYNTAX.md", "r") as rm:
                 PageRev(
                     page=p, title="Aide sur la syntaxe", author=skia, content=rm.read()
                 ).save()
@@ -442,7 +476,7 @@ Welcome to the wiki page!
             s.save()
             # Richard
             s = Subscription(
-                member=User.objects.filter(pk=r.pk).first(),
+                member=User.objects.filter(pk=richard.pk).first(),
                 subscription_type=default_subscription,
                 payment_method=settings.SITH_SUBSCRIPTION_PAYMENT_METHOD[0][0],
             )
@@ -514,7 +548,7 @@ Welcome to the wiki page!
             subscribers = Group.objects.get(name="Subscribers")
             old_subscribers = Group.objects.get(name="Old subscribers")
             Customer(user=skia, account_id="6568j", amount=0).save()
-            Customer(user=r, account_id="4000k", amount=0).save()
+            Customer(user=richard, account_id="4000k", amount=0).save()
             p = ProductType(name="Bières bouteilles")
             p.save()
             c = ProductType(name="Cotisations")
@@ -825,7 +859,15 @@ Welcome to the wiki page!
                 Group.objects.filter(name=settings.SITH_MAIN_MEMBERS_GROUP).first().id
             ]
             sli.save()
-            sli_profile_path = os.path.join(root_path, "core/fixtures/images/5.jpg")
+            sli_profile_path = (
+                root_path
+                / "core"
+                / "fixtures"
+                / "images"
+                / "sas"
+                / "Family"
+                / "sli.jpg"
+            )
             with open(sli_profile_path, "rb") as f:
                 name = str(sli.id) + "_profile.jpg"
                 sli_profile = SithFile(
@@ -835,7 +877,7 @@ Welcome to the wiki page!
                     owner=sli,
                     is_folder=False,
                     mime_type="image/jpeg",
-                    size=os.path.getsize(sli_profile_path),
+                    size=sli_profile_path.stat().st_size,
                 )
                 sli_profile.file.name = name
                 sli_profile.save()
@@ -851,7 +893,15 @@ Welcome to the wiki page!
             )
             krophil.set_password("plop")
             krophil.save()
-            krophil_profile_path = os.path.join(root_path, "core/fixtures/images/6.jpg")
+            krophil_profile_path = (
+                root_path
+                / "core"
+                / "fixtures"
+                / "images"
+                / "sas"
+                / "Family"
+                / "krophil.jpg"
+            )
             with open(krophil_profile_path, "rb") as f:
                 name = str(krophil.id) + "_profile.jpg"
                 krophil_profile = SithFile(
@@ -861,7 +911,7 @@ Welcome to the wiki page!
                     owner=krophil,
                     is_folder=False,
                     mime_type="image/jpeg",
-                    size=os.path.getsize(krophil_profile_path),
+                    size=krophil_profile_path.stat().st_size,
                 )
                 krophil_profile.file.name = name
                 krophil_profile.save()
@@ -1164,3 +1214,106 @@ Welcome to the wiki page!
                 hours_THE=121,
                 hours_TE=4,
             ).save()
+
+            # SAS
+            skia.groups.add(sas_admin.id)
+            sas_fixtures_path = root_path / "core" / "fixtures" / "images" / "sas"
+            for f in sas_fixtures_path.glob("*"):
+                if f.is_dir():
+                    album = Album(
+                        parent=sas,
+                        name=f.name,
+                        owner=root,
+                        is_folder=True,
+                        is_in_sas=True,
+                        is_moderated=True,
+                    )
+                    album.clean()
+                    album.save()
+                    for p in f.iterdir():
+                        pict = Picture(
+                            parent=album,
+                            name=p.name,
+                            file=resize_image(
+                                Image.open(BytesIO(p.read_bytes())), 1000, "JPEG"
+                            ),
+                            owner=root,
+                            is_folder=False,
+                            is_in_sas=True,
+                            is_moderated=True,
+                            mime_type="image/jpeg",
+                            size=p.stat().st_size,
+                        )
+                        pict.file.name = p.name
+                        pict.clean()
+                        pict.generate_thumbnails()
+                        pict.save()
+
+            p = Picture.objects.get(name="skia.jpg")
+            PeoplePictureRelation(user=skia, picture=p).save()
+            p = Picture.objects.get(name="sli.jpg")
+            PeoplePictureRelation(user=sli, picture=p).save()
+            p = Picture.objects.get(name="krophil.jpg")
+            PeoplePictureRelation(user=krophil, picture=p).save()
+            p = Picture.objects.get(name="skia_sli.jpg")
+            PeoplePictureRelation(user=skia, picture=p).save()
+            PeoplePictureRelation(user=sli, picture=p).save()
+            p = Picture.objects.get(name="skia_sli_krophil.jpg")
+            PeoplePictureRelation(user=skia, picture=p).save()
+            PeoplePictureRelation(user=sli, picture=p).save()
+            PeoplePictureRelation(user=krophil, picture=p).save()
+            p = Picture.objects.get(name="richard.jpg")
+            PeoplePictureRelation(user=richard, picture=p).save()
+
+            with open(skia_profile_path, "rb") as f:
+                name = str(skia.id) + "_profile.jpg"
+                skia_profile = SithFile(
+                    parent=profiles_root,
+                    name=name,
+                    file=resize_image(Image.open(BytesIO(f.read())), 400, "JPEG"),
+                    owner=skia,
+                    is_folder=False,
+                    mime_type="image/jpeg",
+                    size=skia_profile_path.stat().st_size,
+                )
+                skia_profile.file.name = name
+                skia_profile.save()
+                skia.profile_pict = skia_profile
+                skia.save()
+
+            # Create some additional data for galaxy to work with
+            root.godfathers.add(skia)
+            skia.godfathers.add(root)
+            sli.godfathers.add(skia)
+            richard.godchildren.add(subscriber)
+            richard.godchildren.add(public)
+            Membership(
+                user=sli,
+                club=troll,
+                role=9,
+                description="Padawan Troll",
+                start_date=timezone.now() - timedelta(days=17),
+            ).save()
+            Membership(
+                user=krophil,
+                club=troll,
+                role=10,
+                description="Maitre Troll",
+                start_date=timezone.now() - timedelta(days=200),
+            ).save()
+            Membership(
+                user=skia,
+                club=troll,
+                role=2,
+                description="Grand Ancien Troll",
+                start_date=timezone.now() - timedelta(days=400),
+                end_date=timezone.now() - timedelta(days=86),
+            ).save()
+            Membership(
+                user=richard,
+                club=troll,
+                role=2,
+                description="",
+                start_date=timezone.now() - timedelta(days=200),
+                end_date=timezone.now() - timedelta(days=100),
+            ).save()

core/templates/core/404.jinja

@@ -2,7 +2,12 @@
 
 {% block content %}
 
-<h3>{% trans %}404, Not Found{% endtrans %}</h3>
+<div id="page">
+	<h3>{% trans %}404, Not Found{% endtrans %}</h3>
+	<p class="alert alert-red">
+		{{ exception }}
+	</p>
+</div>
 
 {% endblock %}
 

core/views/__init__.py

@@ -72,7 +72,9 @@ def forbidden(request, exception):
 
 
 def not_found(request, exception):
-    return HttpResponseNotFound(render(request, "core/404.jinja"))
+    return HttpResponseNotFound(
+        render(request, "core/404.jinja", context={"exception": exception})
+    )
 
 
 def internal_servor_error(request):

core/views/user.py

@@ -189,78 +189,72 @@ class UserTabsMixin(TabedViewMixin):
         return self.object.get_display_name()
 
     def get_list_of_tabs(self):
-        tab_list = []
-        tab_list.append(
+        user: User = self.object
+        tab_list = [
             {
-                "url": reverse("core:user_profile", kwargs={"user_id": self.object.id}),
+                "url": reverse("core:user_profile", kwargs={"user_id": user.id}),
                 "slug": "infos",
                 "name": _("Infos"),
-            }
-        )
-        tab_list.append(
+            },
             {
-                "url": reverse(
-                    "core:user_godfathers", kwargs={"user_id": self.object.id}
-                ),
+                "url": reverse("core:user_godfathers", kwargs={"user_id": user.id}),
                 "slug": "godfathers",
                 "name": _("Family"),
-            }
-        )
-        tab_list.append(
+            },
             {
-                "url": reverse(
-                    "core:user_pictures", kwargs={"user_id": self.object.id}
-                ),
+                "url": reverse("core:user_pictures", kwargs={"user_id": user.id}),
                 "slug": "pictures",
                 "name": _("Pictures"),
-            }
-        )
-        if self.request.user == self.object:
+            },
+        ]
+        if (
+            False and self.request.user.was_subscribed
+        ):  # TODO: display galaxy once it's ready
+            tab_list.append(
+                {
+                    "url": reverse("galaxy:user", kwargs={"user_id": user.id}),
+                    "slug": "galaxy",
+                    "name": _("Galaxy"),
+                }
+            )
+        if self.request.user == user:
             tab_list.append(
                 {"url": reverse("core:user_tools"), "slug": "tools", "name": _("Tools")}
             )
-        if self.request.user.can_edit(self.object):
+        if self.request.user.can_edit(user):
             tab_list.append(
                 {
-                    "url": reverse(
-                        "core:user_edit", kwargs={"user_id": self.object.id}
-                    ),
+                    "url": reverse("core:user_edit", kwargs={"user_id": user.id}),
                     "slug": "edit",
                     "name": _("Edit"),
                 }
             )
             tab_list.append(
                 {
-                    "url": reverse(
-                        "core:user_prefs", kwargs={"user_id": self.object.id}
-                    ),
+                    "url": reverse("core:user_prefs", kwargs={"user_id": user.id}),
                     "slug": "prefs",
                     "name": _("Preferences"),
                 }
             )
-        if self.request.user.can_view(self.object):
+        if self.request.user.can_view(user):
             tab_list.append(
                 {
-                    "url": reverse(
-                        "core:user_clubs", kwargs={"user_id": self.object.id}
-                    ),
+                    "url": reverse("core:user_clubs", kwargs={"user_id": user.id}),
                     "slug": "clubs",
                     "name": _("Clubs"),
                 }
             )
-        if self.request.user.is_owner(self.object):
+        if self.request.user.is_owner(user):
             tab_list.append(
                 {
-                    "url": reverse(
-                        "core:user_groups", kwargs={"user_id": self.object.id}
-                    ),
+                    "url": reverse("core:user_groups", kwargs={"user_id": user.id}),
                     "slug": "groups",
                     "name": _("Groups"),
                 }
             )
         try:
-            if self.object.customer and (
-                self.object == self.request.user
+            if user.customer and (
+                user == self.request.user
                 or self.request.user.is_in_group(
                     settings.SITH_GROUP_ACCOUNTING_ADMIN_ID
                 )
@@ -271,9 +265,7 @@ class UserTabsMixin(TabedViewMixin):
             ):
                 tab_list.append(
                     {
-                        "url": reverse(
-                            "core:user_stats", kwargs={"user_id": self.object.id}
-                        ),
+                        "url": reverse("core:user_stats", kwargs={"user_id": user.id}),
                         "slug": "stats",
                         "name": _("Stats"),
                     }
@@ -281,10 +273,10 @@ class UserTabsMixin(TabedViewMixin):
                 tab_list.append(
                     {
                         "url": reverse(
-                            "core:user_account", kwargs={"user_id": self.object.id}
+                            "core:user_account", kwargs={"user_id": user.id}
                         ),
                         "slug": "account",
-                        "name": _("Account") + " (%s €)" % self.object.customer.amount,
+                        "name": _("Account") + " (%s €)" % user.customer.amount,
                     }
                 )
         except:

galaxy/apps.py

@@ -0,0 +1,30 @@
+# -*- coding:utf-8 -*
+#
+# Copyright 2023
+# - Skia <skia@hya.sk>
+#
+# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
+# http://ae.utbm.fr.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License a published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+
+from django.apps import AppConfig
+
+
+class GalaxyConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "galaxy"

galaxy/management/commands/rule_galaxy.py

@@ -0,0 +1,61 @@
+# -*- coding:utf-8 -*
+#
+# Copyright 2023
+# - Skia <skia@hya.sk>
+#
+# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
+# http://ae.utbm.fr.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License a published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+
+from django.core.management.base import BaseCommand
+from django.db import connection
+
+from galaxy.models import Galaxy
+
+import logging
+
+
+class Command(BaseCommand):
+    help = (
+        "Rule the Galaxy! "
+        "Reset the whole galaxy and compute once again all the relation scores of all users. "
+        "As the sith's users are rather numerous, this command might be quite expensive in memory "
+        "and CPU time. Please keep this fact in mind when scheduling calls to this command in a production "
+        "environment."
+    )
+
+    def handle(self, *args, **options):
+        logger = logging.getLogger("main")
+        if options["verbosity"] > 1:
+            logger.setLevel(logging.DEBUG)
+        elif options["verbosity"] > 0:
+            logger.setLevel(logging.INFO)
+        else:
+            logger.setLevel(logging.NOTSET)
+
+        logger.info("The Galaxy is being ruled by the Sith.")
+        Galaxy.rule()
+        logger.info(
+            "Caching current Galaxy state for a quicker display of the Empire's power."
+        )
+        Galaxy.make_state()
+
+        logger.info("Ruled the galaxy in {} queries.".format(len(connection.queries)))
+        if options["verbosity"] > 2:
+            for q in connection.queries:
+                logger.debug(q)

galaxy/migrations/0001_initial.py

@@ -0,0 +1,113 @@
+# Generated by Django 3.2.16 on 2023-03-02 10:07
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Galaxy",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("state", models.JSONField(verbose_name="current state")),
+            ],
+        ),
+        migrations.CreateModel(
+            name="GalaxyStar",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "mass",
+                    models.PositiveIntegerField(default=0, verbose_name="star mass"),
+                ),
+                (
+                    "owner",
+                    models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="galaxy_user",
+                        to=settings.AUTH_USER_MODEL,
+                        verbose_name="star owner",
+                    ),
+                ),
+            ],
+        ),
+        migrations.CreateModel(
+            name="GalaxyLane",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "distance",
+                    models.PositiveIntegerField(
+                        default=0,
+                        help_text="Distance separating star1 and star2",
+                        verbose_name="distance",
+                    ),
+                ),
+                (
+                    "family",
+                    models.PositiveIntegerField(default=0, verbose_name="family score"),
+                ),
+                (
+                    "pictures",
+                    models.PositiveIntegerField(
+                        default=0, verbose_name="pictures score"
+                    ),
+                ),
+                (
+                    "clubs",
+                    models.PositiveIntegerField(default=0, verbose_name="clubs score"),
+                ),
+                (
+                    "star1",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="lanes1",
+                        to="galaxy.galaxystar",
+                        verbose_name="galaxy star 1",
+                    ),
+                ),
+                (
+                    "star2",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="lanes2",
+                        to="galaxy.galaxystar",
+                        verbose_name="galaxy star 2",
+                    ),
+                ),
+            ],
+        ),
+    ]

galaxy/models.py

@@ -0,0 +1,379 @@
+# -*- coding:utf-8 -*
+#
+# Copyright 2023
+# - Skia <skia@hya.sk>
+#
+# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
+# http://ae.utbm.fr.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License a published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+
+import math
+import logging
+
+from typing import Tuple
+
+from django.db import models
+from django.db.models import Q, Case, F, Value, When, Count
+from django.db.models.functions import Concat
+from django.utils import timezone
+from django.utils.translation import gettext_lazy as _
+from typing import List, TypedDict
+
+from core.models import User
+from club.models import Club
+from sas.models import Picture
+
+
+class GalaxyStar(models.Model):
+    """
+    This class defines a star (vertex -> user) in the galaxy graph, storing a reference to its owner citizen, and being
+    referenced by GalaxyLane.
+
+    It also stores the individual mass of this star, used to push it towards the center of the galaxy.
+    """
+
+    owner = models.OneToOneField(
+        User,
+        verbose_name=_("star owner"),
+        related_name="galaxy_user",
+        on_delete=models.CASCADE,
+    )
+    mass = models.PositiveIntegerField(
+        _("star mass"),
+        default=0,
+    )
+
+    def __str__(self):
+        return str(self.owner)
+
+
+class GalaxyLane(models.Model):
+    """
+    This class defines a lane (edge -> link between galaxy citizen) in the galaxy map, storing a reference to both its
+    ends and the distance it covers.
+    Score details between citizen owning the stars is also stored here.
+    """
+
+    star1 = models.ForeignKey(
+        GalaxyStar,
+        verbose_name=_("galaxy star 1"),
+        related_name="lanes1",
+        on_delete=models.CASCADE,
+    )
+    star2 = models.ForeignKey(
+        GalaxyStar,
+        verbose_name=_("galaxy star 2"),
+        related_name="lanes2",
+        on_delete=models.CASCADE,
+    )
+    distance = models.PositiveIntegerField(
+        _("distance"),
+        default=0,
+        help_text=_("Distance separating star1 and star2"),
+    )
+    family = models.PositiveIntegerField(
+        _("family score"),
+        default=0,
+    )
+    pictures = models.PositiveIntegerField(
+        _("pictures score"),
+        default=0,
+    )
+    clubs = models.PositiveIntegerField(
+        _("clubs score"),
+        default=0,
+    )
+
+
+class StarDict(TypedDict):
+    id: int
+    name: str
+    mass: int
+
+
+class GalaxyDict(TypedDict):
+    nodes: List[StarDict]
+    links: List
+
+
+class Galaxy(models.Model):
+    logger = logging.getLogger("main")
+
+    GALAXY_SCALE_FACTOR = 2_000
+    FAMILY_LINK_POINTS = 366  # Equivalent to a leap year together in a club, because.
+    PICTURE_POINTS = 2  # Equivalent to two days as random members of a club.
+    CLUBS_POINTS = 1  # One day together as random members in a club is one point.
+
+    state = models.JSONField("current state")
+
+    @staticmethod
+    def make_state() -> None:
+        """
+        Compute JSON structure to send to 3d-force-graph: https://github.com/vasturiano/3d-force-graph/
+        """
+        without_nickname = Concat(
+            F("owner__first_name"), Value(" "), F("owner__last_name")
+        )
+        with_nickname = Concat(
+            F("owner__first_name"),
+            Value(" "),
+            F("owner__last_name"),
+            Value(" ("),
+            F("owner__nick_name"),
+            Value(")"),
+        )
+        stars = GalaxyStar.objects.annotate(
+            owner_name=Case(
+                When(owner__nick_name=None, then=without_nickname),
+                default=with_nickname,
+            )
+        )
+        lanes = GalaxyLane.objects.annotate(
+            star1_owner=F("star1__owner__id"),
+            star2_owner=F("star2__owner__id"),
+        )
+        json = GalaxyDict(
+            nodes=[
+                StarDict(id=star.owner_id, name=star.owner_name, mass=star.mass)
+                for star in stars
+            ],
+            links=[],
+        )
+        # Make bidirectional links
+        # TODO: see if this impacts performance with a big graph
+        for path in lanes:
+            json["links"].append(
+                {
+                    "source": path.star1_owner,
+                    "target": path.star2_owner,
+                    "value": path.distance,
+                }
+            )
+            json["links"].append(
+                {
+                    "source": path.star2_owner,
+                    "target": path.star1_owner,
+                    "value": path.distance,
+                }
+            )
+        Galaxy.objects.all().delete()
+        Galaxy(state=json).save()
+
+    ###################
+    # User self score #
+    ###################
+
+    @classmethod
+    def compute_user_score(cls, user) -> int:
+        """
+        This compute an individual score for each citizen. It will later be used by the graph algorithm to push
+        higher scores towards the center of the galaxy.
+
+        Idea: This could be added to the computation:
+              - Forum posts
+              - Picture count
+              - Counter consumption
+              - Barman time
+              - ...
+        """
+        user_score = 1
+        user_score += cls.query_user_score(user)
+
+        # TODO:
+        # Scale that value with some magic number to accommodate to typical data
+        # Really active galaxy citizen after 5 years typically have a score of about XXX
+        # Citizen that were seen regularly without taking much part in organizations typically have a score of about XXX
+        # Citizen that only went to a few events typically score about XXX
+        user_score = int(math.log2(user_score))
+
+        return user_score
+
+    @classmethod
+    def query_user_score(cls, user) -> int:
+        score_query = (
+            User.objects.filter(id=user.id)
+            .annotate(
+                godchildren_count=Count("godchildren", distinct=True)
+                * cls.FAMILY_LINK_POINTS,
+                godfathers_count=Count("godfathers", distinct=True)
+                * cls.FAMILY_LINK_POINTS,
+                pictures_score=Count("pictures", distinct=True) * cls.PICTURE_POINTS,
+                clubs_score=Count("memberships", distinct=True) * cls.CLUBS_POINTS,
+            )
+            .aggregate(
+                score=models.Sum(
+                    F("godchildren_count")
+                    + F("godfathers_count")
+                    + F("pictures_score")
+                    + F("clubs_score")
+                )
+            )
+        )
+        return score_query.get("score")
+
+    ####################
+    # Inter-user score #
+    ####################
+
+    @classmethod
+    def compute_users_score(cls, user1, user2) -> Tuple[int, int, int, int]:
+        family = cls.compute_users_family_score(user1, user2)
+        pictures = cls.compute_users_pictures_score(user1, user2)
+        clubs = cls.compute_users_clubs_score(user1, user2)
+        score = family + pictures + clubs
+        return score, family, pictures, clubs
+
+    @classmethod
+    def compute_users_family_score(cls, user1, user2) -> int:
+        link_count = User.objects.filter(
+            Q(id=user1.id, godfathers=user2) | Q(id=user2.id, godfathers=user1)
+        ).count()
+        if link_count:
+            cls.logger.debug(
+                f"\t\t- '{user1}' and '{user2}' have {link_count} direct family link"
+            )
+        return link_count * cls.FAMILY_LINK_POINTS
+
+    @classmethod
+    def compute_users_pictures_score(cls, user1, user2) -> int:
+        picture_count = (
+            Picture.objects.filter(people__user__in=(user1,))
+            .filter(people__user__in=(user2,))
+            .count()
+        )
+        if picture_count:
+            cls.logger.debug(
+                f"\t\t- '{user1}' was pictured with '{user2}' {picture_count} times"
+            )
+        return picture_count * cls.PICTURE_POINTS
+
+    @classmethod
+    def compute_users_clubs_score(cls, user1, user2) -> int:
+        common_clubs = Club.objects.filter(members__in=user1.memberships.all()).filter(
+            members__in=user2.memberships.all()
+        )
+        user1_memberships = user1.memberships.filter(club__in=common_clubs)
+        user2_memberships = user2.memberships.filter(club__in=common_clubs)
+
+        score = 0
+        for user1_membership in user1_memberships:
+            if user1_membership.end_date is None:
+                user1_membership.end_date = timezone.now().date()
+            query = Q(  # start2 <= start1 <= end2
+                start_date__lte=user1_membership.start_date,
+                end_date__gte=user1_membership.start_date,
+            )
+            query |= Q(  # start2 <= start1 <= now
+                start_date__lte=user1_membership.start_date, end_date=None
+            )
+            query |= Q(  # start1 <= start2 <= end2
+                start_date__gte=user1_membership.start_date,
+                start_date__lte=user1_membership.end_date,
+            )
+            for user2_membership in user2_memberships.filter(
+                query, club=user1_membership.club
+            ):
+                if user2_membership.end_date is None:
+                    user2_membership.end_date = timezone.now().date()
+                latest_start = max(
+                    user1_membership.start_date, user2_membership.start_date
+                )
+                earliest_end = min(user1_membership.end_date, user2_membership.end_date)
+                cls.logger.debug(
+                    "\t\t- '%s' was with '%s' in %s starting on %s until %s (%s days)"
+                    % (
+                        user1,
+                        user2,
+                        user2_membership.club,
+                        latest_start,
+                        earliest_end,
+                        (earliest_end - latest_start).days,
+                    )
+                )
+                score += cls.CLUBS_POINTS * (earliest_end - latest_start).days
+        return score
+
+    ###################
+    # Rule the galaxy #
+    ###################
+
+    @classmethod
+    def rule(cls) -> None:
+        GalaxyStar.objects.all().delete()
+        # The following is a no-op thanks to cascading, but in case that changes in the future, better keep it anyway.
+        GalaxyLane.objects.all().delete()
+        rulable_users = (
+            User.objects.filter(subscriptions__isnull=False)
+            .filter(
+                Q(godchildren__isnull=False)
+                | Q(godfathers__isnull=False)
+                | Q(pictures__isnull=False)
+                | Q(memberships__isnull=False)
+            )
+            .distinct()
+        )
+        # force fetch of the whole query to make sure there won't
+        # be any more db hits
+        # this is memory expensive but prevents a lot of db hits, therefore
+        # is far more time efficient
+        rulable_users = list(rulable_users)
+        while len(rulable_users) > 0:
+            user1 = rulable_users.pop()
+            for user2 in rulable_users:
+                cls.logger.debug("")
+                cls.logger.debug(f"\t> Ruling '{user1}' against '{user2}'")
+                star1, _ = GalaxyStar.objects.get_or_create(owner=user1)
+                star2, _ = GalaxyStar.objects.get_or_create(owner=user2)
+                if star1.mass == 0:
+                    star1.mass = cls.compute_user_score(user1)
+                    star1.save()
+                if star2.mass == 0:
+                    star2.mass = cls.compute_user_score(user2)
+                    star2.save()
+                users_score, family, pictures, clubs = cls.compute_users_score(
+                    user1, user2
+                )
+                if users_score > 0:
+                    GalaxyLane(
+                        star1=star1,
+                        star2=star2,
+                        distance=cls.scale_distance(users_score),
+                        family=family,
+                        pictures=pictures,
+                        clubs=clubs,
+                    ).save()
+
+    @classmethod
+    def scale_distance(cls, value) -> int:
+        # TODO: this will need adjustements with the real, typical data on Taiste
+
+        cls.logger.debug(f"\t\t> Score: {value}")
+        # Invert score to draw close users together
+        value = 1 / value  # Cannot be 0
+        value += 2  # We use log2 just below and need to stay above 1
+        value = (  # Let's get something in the range ]0; log2(3)-1≈0.58[ that we can multiply later
+            math.log2(value) - 1
+        )
+        value *= (  # Scale that value with a magic number to accommodate to typical data
+            # Really close galaxy citizen after 5 years typically have a score of about XXX
+            # Citizen that were in the same year without being really friends typically have a score of about XXX
+            # Citizen that have met once or twice only have a couple of pictures together typically score about XXX
+            cls.GALAXY_SCALE_FACTOR
+        )
+        cls.logger.debug(f"\t\t> Scaled distance: {value}")
+        return int(value)

galaxy/templates/galaxy/user.jinja

@@ -0,0 +1,108 @@
+{% extends "core/base.jinja" %}
+
+{% block title %}
+{% trans user_name=user.get_display_name() %}{{ user_name }}'s Galaxy{% endtrans %}
+{% endblock %}
+
+{% block content %}
+{% if object.galaxy_user %}
+    <p><a onclick="focus_node(get_node_from_id({{ object.id }}))">Reset on {{ object.get_display_name() }}</a></p>
+    <p>Self score: {{ object.galaxy_user.mass }}</p>
+    <table style="width: initial;">
+        <tr>
+          <th></th>
+          <th>Citizen</th>
+          <th>Score</th>
+          <th>Distance</th>
+          <th>Family</th>
+          <th>Pictures</th>
+          <th>Clubs</th>
+        </tr>
+    {% for lane in lanes %}
+        <tr>
+          <td><a onclick="focus_node(get_node_from_id({{ lane.other_star_id }}))">Locate</a></td>
+          <td><a href="{{ url("galaxy:user", user_id=lane.other_star_id) }}">{{ lane.other_star_name }}</a></td>
+          <td>{{ lane.other_star_mass }}</td>
+          <td>{{ lane.distance }}</td>
+          <td>{{ lane.family }}</td>
+          <td>{{ lane.pictures }}</td>
+          <td>{{ lane.clubs }}</td>
+        </tr>
+    {% endfor %}
+    </table>
+
+  <div id="3d-graph" style="margin: 1em;"></div>
+{% else %}
+  <p>This citizen has not yet joined the galaxy</p>
+{% endif %}
+
+{% endblock %}
+
+{% block script %}
+  {{ super() }}
+
+  <script src="{{ static('galaxy/js/three.min.js') }}" defer></script>
+  <script src="{{ static('galaxy/js/three-spritetext.min.js') }}" defer></script>
+  <script src="{{ static('galaxy/js/3d-force-graph.min.js') }}" defer></script>
+  <script src="{{ static('galaxy/js/d3-force-3d.min.js') }}" defer></script>
+
+  <script>
+  var Graph;
+
+  function get_node_from_id(id) {
+      return Graph.graphData().nodes.find(n => n.id === id);
+  }
+
+  function focus_node(node) {
+      // Aim at node from outside it
+      const distance = 200;
+      const distRatio = 1 + distance/Math.hypot(node.x, node.y, node.z);
+
+      const newPos = node.x || node.y || node.z
+        ? { x: node.x * distRatio, y: node.y * distRatio, z: node.z * distRatio }
+        : { x: 0, y: 0, z: distance }; // special case if node is in (0,0,0)
+
+      Graph.cameraPosition(
+        newPos, // new position
+        node, // lookAt ({ x, y, z })
+        3000  // ms transition duration
+      );
+  }
+
+  document.addEventListener("DOMContentLoaded", () => {
+    Graph = ForceGraph3D();
+    Graph(document.getElementById('3d-graph'));
+    Graph
+        .jsonUrl('{{ url("galaxy:data") }}')
+        .width(1000)
+        .height(700)
+        .nodeAutoColorBy('id')
+        .nodeLabel(node => `${node.name}`)
+        .onNodeClick(node => focus_node(node))
+        .linkDirectionalParticles(3)
+        .linkDirectionalParticleWidth(0.8)
+        .linkDirectionalParticleSpeed(0.006)
+        .nodeThreeObject(node => {
+          const sprite = new SpriteText(node.name);
+          sprite.material.depthWrite = false; // make sprite background transparent
+          sprite.color = node.color;
+          sprite.textHeight = 5;
+          return sprite;
+        });
+
+    // Set distance between stars
+    Graph.d3Force('link').distance(link => link.value);
+
+    // Set high masses nearer the center of the galaxy
+    // TODO: quick and dirty strength computation, this will need tuning.
+    Graph.d3Force('positionX', d3.forceX().strength(node => { return 1 - (1 / node.mass); }));
+    Graph.d3Force('positionY', d3.forceY().strength(node => { return 1 - (1 / node.mass); }));
+    Graph.d3Force('positionZ', d3.forceZ().strength(node => { return 1 - (1 / node.mass); }));
+
+    // Focus current user
+    setTimeout(() => focus_node(get_node_from_id({{ object.id }})), 1000);
+  })
+  </script>
+{% endblock %}
+
+

galaxy/tests.py

@@ -0,0 +1,149 @@
+# -*- coding:utf-8 -*
+#
+# Copyright 2023
+# - Skia <skia@hya.sk>
+#
+# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
+# http://ae.utbm.fr.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License a published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+
+from django.test import TestCase
+from django.core.management import call_command
+
+from core.models import User
+from galaxy.models import Galaxy
+
+
+class GalaxyTest(TestCase):
+    def setUp(self):
+        call_command("populate")
+        self.root = User.objects.get(username="root")
+        self.skia = User.objects.get(username="skia")
+        self.sli = User.objects.get(username="sli")
+        self.krophil = User.objects.get(username="krophil")
+        self.richard = User.objects.get(username="rbatsbak")
+        self.subscriber = User.objects.get(username="subscriber")
+        self.public = User.objects.get(username="public")
+        self.com = User.objects.get(username="comunity")
+
+    def test_user_self_score(self):
+        with self.assertNumQueries(8):
+            self.assertEqual(Galaxy.compute_user_score(self.root), 9)
+            self.assertEqual(Galaxy.compute_user_score(self.skia), 10)
+            self.assertEqual(Galaxy.compute_user_score(self.sli), 8)
+            self.assertEqual(Galaxy.compute_user_score(self.krophil), 2)
+            self.assertEqual(Galaxy.compute_user_score(self.richard), 10)
+            self.assertEqual(Galaxy.compute_user_score(self.subscriber), 8)
+            self.assertEqual(Galaxy.compute_user_score(self.public), 8)
+            self.assertEqual(Galaxy.compute_user_score(self.com), 1)
+
+    def test_users_score(self):
+        expected_scores = {
+            "krophil": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "public": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "rbatsbak": {"clubs": 100, "family": 0, "pictures": 0, "score": 100},
+                "subscriber": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+            },
+            "public": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0}
+            },
+            "rbatsbak": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "public": {"clubs": 0, "family": 366, "pictures": 0, "score": 366},
+                "subscriber": {"clubs": 0, "family": 366, "pictures": 0, "score": 366},
+            },
+            "root": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "krophil": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "public": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "rbatsbak": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "skia": {"clubs": 0, "family": 732, "pictures": 0, "score": 732},
+                "sli": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "subscriber": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+            },
+            "skia": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "krophil": {"clubs": 114, "family": 0, "pictures": 2, "score": 116},
+                "public": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "rbatsbak": {"clubs": 100, "family": 0, "pictures": 0, "score": 100},
+                "sli": {"clubs": 0, "family": 366, "pictures": 4, "score": 370},
+                "subscriber": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+            },
+            "sli": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "krophil": {"clubs": 17, "family": 0, "pictures": 2, "score": 19},
+                "public": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "rbatsbak": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "subscriber": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+            },
+            "subscriber": {
+                "comunity": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+                "public": {"clubs": 0, "family": 0, "pictures": 0, "score": 0},
+            },
+        }
+        computed_scores = {}
+        users = [
+            self.root,
+            self.skia,
+            self.sli,
+            self.krophil,
+            self.richard,
+            self.subscriber,
+            self.public,
+            self.com,
+        ]
+
+        with self.assertNumQueries(100):
+            while len(users) > 0:
+                user1 = users.pop(0)
+                for user2 in users:
+                    score, family, pictures, clubs = Galaxy.compute_users_score(
+                        user1, user2
+                    )
+                    u1 = computed_scores.get(user1.username, {})
+                    u1[user2.username] = {
+                        "score": score,
+                        "family": family,
+                        "pictures": pictures,
+                        "clubs": clubs,
+                    }
+                    computed_scores[user1.username] = u1
+
+        self.maxDiff = None  # Yes, we want to see the diff if any
+        self.assertDictEqual(expected_scores, computed_scores)
+
+    def test_page_is_citizen(self):
+        Galaxy.rule()
+        self.client.login(username="root", password="plop")
+        response = self.client.get("/galaxy/1/")
+        self.assertContains(
+            response,
+            '<a onclick="focus_node(get_node_from_id(8))">Locate</a>',
+            status_code=200,
+        )
+
+    def test_page_not_citizen(self):
+        Galaxy.rule()
+        self.client.login(username="root", password="plop")
+        response = self.client.get("/galaxy/2/")
+        self.assertContains(
+            response,
+            "Ce citoyen n&#39;a pas encore rejoint la galaxie",
+            status_code=404,
+        )

galaxy/urls.py

@@ -0,0 +1,40 @@
+# -*- coding:utf-8 -*
+#
+# Copyright 2023
+# - Skia <skia@hya.sk>
+#
+# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
+# http://ae.utbm.fr.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License a published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+
+from django.urls import path
+
+from galaxy.views import *
+
+urlpatterns = [
+    path(
+        "<int:user_id>/",
+        GalaxyUserView.as_view(),
+        name="user",
+    ),
+    path(
+        "data.json",
+        GalaxyDataView.as_view(),
+        name="data",
+    ),
+]

galaxy/views.py

@@ -0,0 +1,104 @@
+# -*- coding:utf-8 -*
+#
+# Copyright 2023
+# - Skia <skia@hya.sk>
+#
+# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
+# http://ae.utbm.fr.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License a published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
+# Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#
+
+from django.views.generic import DetailView, View
+from django.http import JsonResponse, Http404
+from django.db.models import Q, Case, F, When, Value
+from django.db.models.functions import Concat
+from django.utils.translation import gettext_lazy as _
+
+from core.views import (
+    CanViewMixin,
+    FormerSubscriberMixin,
+)
+from core.models import User
+from core.views import UserTabsMixin
+from galaxy.models import Galaxy, GalaxyLane
+
+
+class GalaxyUserView(CanViewMixin, UserTabsMixin, DetailView):
+    model = User
+    pk_url_kwarg = "user_id"
+    template_name = "galaxy/user.jinja"
+    current_tab = "galaxy"
+
+    def get_object(self, *args, **kwargs):
+        user: User = super(GalaxyUserView, self).get_object(*args, **kwargs)
+        if not hasattr(user, "galaxy_user"):
+            raise Http404(_("This citizen has not yet joined the galaxy"))
+        return user
+
+    def get_queryset(self):
+        return super(GalaxyUserView, self).get_queryset().select_related("galaxy_user")
+
+    def get_context_data(self, **kwargs):
+        kwargs = super(GalaxyUserView, self).get_context_data(**kwargs)
+        kwargs["lanes"] = (
+            GalaxyLane.objects.filter(
+                Q(star1=self.object.galaxy_user) | Q(star2=self.object.galaxy_user)
+            )
+            .order_by("distance")
+            .annotate(
+                other_star_id=Case(
+                    When(star1=self.object.galaxy_user, then=F("star2__owner__id")),
+                    default=F("star1__owner__id"),
+                ),
+                other_star_mass=Case(
+                    When(star1=self.object.galaxy_user, then=F("star2__mass")),
+                    default=F("star1__mass"),
+                ),
+                other_star_name=Case(
+                    When(
+                        star1=self.object.galaxy_user,
+                        then=Case(
+                            When(
+                                star2__owner__nick_name=None,
+                                then=Concat(
+                                    F("star2__owner__first_name"),
+                                    Value(" "),
+                                    F("star2__owner__last_name"),
+                                ),
+                            )
+                        ),
+                    ),
+                    default=Case(
+                        When(
+                            star1__owner__nick_name=None,
+                            then=Concat(
+                                F("star1__owner__first_name"),
+                                Value(" "),
+                                F("star1__owner__last_name"),
+                            ),
+                        )
+                    ),
+                ),
+            )
+            .select_related("star1", "star2")
+        )
+        return kwargs
+
+
+class GalaxyDataView(FormerSubscriberMixin, View):
+    def get(self, request, *args, **kwargs):
+        return JsonResponse(Galaxy.objects.first().state)

sith/settings.py

@@ -97,6 +97,7 @@ INSTALLED_APPS = (
     "trombi",
     "matmat",
     "pedagogy",
+    "galaxy",
 )
 
 MIDDLEWARE = (
@@ -210,6 +211,29 @@ DATABASES = {
     }
 }
 
+# Logging
+LOGGING = {
+    "version": 1,
+    "disable_existing_loggers": False,
+    "formatters": {
+        "simple": {"format": "%(levelname)s %(message)s"},
+    },
+    "handlers": {
+        "log_to_stdout": {
+            "level": "DEBUG",
+            "class": "logging.StreamHandler",
+            "formatter": "simple",
+        },
+    },
+    "loggers": {
+        "main": {
+            "handlers": ["log_to_stdout"],
+            "level": "INFO",
+            "propagate": True,
+        }
+    },
+}
+
 # Internationalization
 # https://docs.djangoproject.com/en/1.8/topics/i18n/
 
@@ -691,4 +715,8 @@ SITH_FRONT_DEP_VERSIONS = {
     "https://github.com/jhuckaby/webcamjs/": "1.0.0",
     "https://github.com/vuejs/vue-next": "3.2.18",
     "https://github.com/alpinejs/alpine": "3.10.5",
+    "https://github.com/mrdoob/three.js/": "r148",
+    "https://github.com/vasturiano/three-spritetext": "1.6.5",
+    "https://github.com/vasturiano/3d-force-graph/": "1.70.19",
+    "https://github.com/vasturiano/d3-force-3d": "3.0.3",
 }

sith/urls.py

@@ -76,6 +76,7 @@ urlpatterns = [
     path("api/v1/", include(("api.urls", "api"), namespace="api")),
     path("election/", include(("election.urls", "election"), namespace="election")),
     path("forum/", include(("forum.urls", "forum"), namespace="forum")),
+    path("galaxy/", include(("galaxy.urls", "galaxy"), namespace="galaxy")),
     path("trombi/", include(("trombi.urls", "trombi"), namespace="trombi")),
     path("matmatronch/", include(("matmat.urls", "matmat"), namespace="matmat")),
     path("pedagogy/", include(("pedagogy.urls", "pedagogy"), namespace="pedagogy")),