dynamic scoring for events, i'm pretty sure everything is gonna break

src/events/migrations/0008_event_dynamic.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.1.5 on 2022-02-12 18:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0007_event_auto_match'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='event',
+            name='dynamic',
+            field=models.BooleanField(default=False),
+        ),
+    ]

src/events/models.py

@@ -16,6 +16,7 @@ class Event(models.Model):
     slug        =   models.SlugField(max_length=55)
     team_size   =   models.PositiveIntegerField(default=1)
     auto_match  =   models.BooleanField(default=False)
+    dynamic     =   models.BooleanField(default=False)
     def __str__(self):
         return self.name
 

src/events/templates/events/ctf_info.html

@@ -29,7 +29,7 @@
           {% elif errorform == True %}
           <p>{% trans "Error while processing your request. (Invalid Form)" %}</p>
           {% elif notsub == True %}
-          <span class="message error-msg">{% trans "Error: you're not registered to this event, so you can't register scores, fucking logic." %}</span>
+          <span class="message error-msg">{% trans "You must register to the event before submitting flags." %}</span>
           {% elif noteam == True %}
           <span class="message error-msg">{% trans "This is a team event, please create or join a team before submitting flags." %}</span>
           {% if ctf.ctf_url %}

src/events/views/events.py

@@ -7,6 +7,7 @@ from ctfs.models import CTF, CTF_flags, Category
 from django.utils.translation import get_language
 from django.contrib.auth.models import User
 from django.utils.translation import gettext_lazy as _
+from math import log
 
 def get_description_by_lang(ctf):
 	lang = get_language()
@@ -21,6 +22,24 @@ def get_description_by_lang(ctf):
 		ret = ctf.description_ru
 	return ret
 
+def actualize_points(ctf):
+	solves =  CTF_flags.objects.filter(ctf=ctf)
+	nb_solves = len(solves)
+
+	new_points = max(50 - int(log(nb_solves)*2.5)*5, 5)
+
+	if new_points != ctf.points:
+		diff = ctf.points - new_points
+		ctf.points = new_points
+		ctf.save()
+		for s in solves:
+			player = EventPlayer.objects.get(event=ctf.event, user=s.user)
+			player.score -= diff
+			player.save()
+			if player.team:
+				player.team.score -= diff
+				player.team.save()
+
 # Create your views here.
 def events(request):
 	list_events        =   Event.objects.filter().order_by('-end_date', 'start_date')
@@ -115,6 +134,7 @@ def event(request, event_slug):
 def submit_event_flag(request, event_slug, chall_slug):
 	ev          =   get_object_or_404(Event, slug=event_slug)
 	response    =   redirect('events:event_chall_info', event_slug=event_slug, chall_slug=chall_slug)
+	flagged     =   False
 
 	if timezone.now() >= ev.end_date:
 		response['Location'] += '?EventIsOver=1'
@@ -126,8 +146,10 @@ def submit_event_flag(request, event_slug, chall_slug):
 			response['Location'] += '?ChallengeNotFound=1'
 			return response
 		
-		flagged     =   False
-		player		=	EventPlayer.objects.get(user=request.user, event=ev)
+		try:
+			player = EventPlayer.objects.get(event=ev, user=request.user)
+		except:
+			player = None
 		
 		if player:
 			if ev.team_size > 1 and player.team is None:
@@ -160,6 +182,8 @@ def submit_event_flag(request, event_slug, chall_slug):
 							player.team.last_submission_date = timezone.now()
 						player.team.score += ctf_info.points
 						player.team.save()
+					if ev.dynamic:
+						actualize_points(ctf_info)
 					response['Location'] += '?Congrat=1'
 					return response
 				else: