Feat: Supporter-Team-Statistiken in der Team-Statistikansicht

Erweitert die Team-Statistikansicht um zwei neue Metriken:
- 'Games with Supporters': Zeigt die Anzahl der Spiele an, die mit Unterstützung
  durch ein zweites Team (Supporter-Team) stattgefunden haben.
- 'Avg. Supporter Share': Berechnet den durchschnittlichen Prozentsatz der
  Spieler, die in diesen Spielen vom Supporter-Team gestellt wurden.

Diese Statistiken helfen, den Grad der Abhängigkeit von externer Spielerunterstützung
zu analysieren. Die Anzeige erfolgt in einer neuen Karte auf der Team-Statistikseite.

Änderungen umfassen:
- Anpassung der Funktion  in
  zur Berechnung der neuen Metriken unter Berücksichtigung von
   und .
- Erweiterung des Templates
  um eine neue 'Supporter Stats'-Karte zur Anzeige der berechneten Werte.

team_stats/templates/team_stats/team_statistics.html

@@ -67,9 +67,9 @@
                 </div>
             </div>
 
-            <!-- Luck-O-Meter and Inning Heatmap -->
+            <!-- Luck-O-Meter, Supporter Stats -->
             <div class="row mt-4">
-                <div class="col-md-4">
+                <div class="col-md-6">
                     <div class="card">
                         <div class="card-header">Luck-O-Meter</div>
                         <div class="card-body">
@@ -78,7 +78,20 @@
                         </div>
                     </div>
                 </div>
-                <div class="col-md-8">
+                <div class="col-md-6">
+                    <div class="card">
+                        <div class="card-header">Supporter Stats</div>
+                        <div class="card-body">
+                            <p>Games with Supporters: {{ stats.games_with_supporters }}</p>
+                            <p>Avg. Supporter Share: {{ stats.avg_supporter_player_percentage|floatformat:2 }}%</p>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Inning Heatmap -->
+            <div class="row mt-4">
+                <div class="col-md-12">
                     <div class="card">
                         <div class="card-header">Inning Heatmap (Runs Scored)</div>
                         <div class="card-body">

team_stats/views.py

@@ -2,13 +2,13 @@ from django.shortcuts import render, get_object_or_404
 from django.contrib.auth.decorators import login_required
 from django.http import HttpResponseForbidden
 from clubs.models import Team
-from calendars.models import Game
+from calendars.models import Game, EventParticipation
 
 def _calculate_statistics(team, season=None):
     """
     Calculates statistics for a given team and season.
     """
-    games_query = Game.objects.filter(team=team, result__isnull=False)
+    games_query = Game.objects.filter(team=team, result__isnull=False).prefetch_related('opened_for_teams')
     if season:
         games_query = games_query.filter(season=season)
     
@@ -20,10 +20,25 @@ def _calculate_statistics(team, season=None):
     runs_allowed = 0
     inning_runs = {i: 0 for i in range(1, 10)}
     streak_counter = 0
-    current_streak_type = None
     last_game_result = None
     
+    games_with_supporters = 0
+    total_supporter_player_percentage = 0
+
     for game in games:
+        # Supporter stats
+        if game.opened_for_teams.exists():
+            games_with_supporters += 1
+            
+            attending_players = EventParticipation.objects.filter(event=game, status='attending').select_related('user__team')
+            total_attendees = attending_players.count()
+            
+            if total_attendees > 0:
+                supporter_players_count = attending_players.exclude(user__team=game.team).count()
+                supporter_percentage = (supporter_players_count / total_attendees) * 100
+                total_supporter_player_percentage += supporter_percentage
+
+        # Standard game stats
         result = game.result
         
         sorted_items = sorted(result.inning_results.items(), key=lambda x: int(x[0].split('_')[1]))
@@ -85,6 +100,8 @@ def _calculate_statistics(team, season=None):
     else:
         pythagorean_pct = 0
         
+    avg_supporter_player_percentage = (total_supporter_player_percentage / games_with_supporters) if games_with_supporters > 0 else 0
+
     return {
         'team': team,
         'wins': wins,
@@ -96,6 +113,8 @@ def _calculate_statistics(team, season=None):
         'pythagorean_pct': pythagorean_pct,
         'inning_runs': inning_runs,
         'total_games': total_games,
+        'games_with_supporters': games_with_supporters,
+        'avg_supporter_player_percentage': avg_supporter_player_percentage,
     }
 
 @login_required