From 55b41815c16867b7472662b39ec1ba07ef38e2b2 Mon Sep 17 00:00:00 2001
From: Brennan Bibic <brennan.bibic@gmail.com>
Date: Wed, 14 Aug 2024 15:29:53 -0400
Subject: [PATCH] reformat ranking groups

---
 ranked/templates/ranked/leaderboard.html |  6 +++--
 ranked/templatetags/rank_filter.py       | 30 ++++++++++++++----------
 ranked/views.py                          | 18 ++++++++++----
 3 files changed, 35 insertions(+), 19 deletions(-)

diff --git a/ranked/templates/ranked/leaderboard.html b/ranked/templates/ranked/leaderboard.html
index 1328b60..d4abb82 100644
--- a/ranked/templates/ranked/leaderboard.html
+++ b/ranked/templates/ranked/leaderboard.html
@@ -1,4 +1,6 @@
-{% extends 'home/base.html' %} {% block content %} {% load rank_filter %}
+{% extends 'home/base.html' %} 
+{% block content %} 
+{% load rank_filter %}
 
 <div class="position-relative overflow-hidden text-center bg-primary">
     <div class="p-lg-4 mx-auto">
@@ -34,7 +36,7 @@ <h1 style="color: white" class="display-4 fw-normal">
         </td>
         <td>{{ player.elo|floatformat:1 }}</td>
         <td>{{ player.mmr|floatformat:1 }}</td>
-        <td>{{player.mmr|get_rank}}</td>
+        <td>{% mmr_to_rank player.mmr highest_mmr lowest_mmr %}</td>
         <td>{{player.matches_played}}</td>
         <td>{{ player.win_rate|floatformat:2 }}%</td>
         <td>{{player.matches_won}}</td>
diff --git a/ranked/templatetags/rank_filter.py b/ranked/templatetags/rank_filter.py
index fa695b9..770f42e 100644
--- a/ranked/templatetags/rank_filter.py
+++ b/ranked/templatetags/rank_filter.py
@@ -2,26 +2,32 @@
 
 register = template.Library()
 
-def mmr_to_rank(mmr):
-    if mmr > 1600:
+@register.simple_tag
+def mmr_to_rank(mmr, highest_mmr, lowest_mmr):
+    if highest_mmr == lowest_mmr:
+        return 'Stone'  # All players have the same MMR, edge case
+
+    # Calculate the percentile
+    percentile = (highest_mmr - mmr) / (highest_mmr - lowest_mmr)
+    
+    # Determine rank based on percentile
+    if percentile <= 0.1:
         return 'Challenger'
-    elif mmr > 1500:
+    elif percentile <= 0.2:
         return 'Grandmaster'
-    elif mmr > 1400:
+    elif percentile <= 0.3:
         return 'Master'
-    elif mmr > 1300:
+    elif percentile <= 0.4:
         return 'Diamond'
-    elif mmr > 1200:
+    elif percentile <= 0.5:
         return 'Platinum'
-    elif mmr > 1100:
+    elif percentile <= 0.6:
         return 'Gold'
-    elif mmr > 1000:
+    elif percentile <= 0.7:
         return 'Silver'
-    elif mmr > 900:
+    elif percentile <= 0.8:
         return 'Bronze'
-    elif mmr > 800:
+    elif percentile <= 0.9:
         return 'Iron'
     else:
         return 'Stone'
-
-register.filter('get_rank', mmr_to_rank)
\ No newline at end of file
diff --git a/ranked/views.py b/ranked/views.py
index 3ff09f5..f860b68 100644
--- a/ranked/views.py
+++ b/ranked/views.py
@@ -1,6 +1,6 @@
 from django.shortcuts import render
 from django.http.response import HttpResponseRedirect
-from django.db.models import Max, F
+from django.db.models import Max, Min, F
 from django.db.models import Q, Count
 from django.db.models import IntegerField, ExpressionWrapper, FloatField
 from django.db.models.functions import ExtractHour
@@ -44,14 +44,22 @@ def leaderboard(request, name):
 
     players = players.annotate(time_delta=ExpressionWrapper(datetime.now(timezone.utc) - F('last_match_played_time'), output_field=FloatField()) / 3600000000)
 
-    # players = players.annotate(mmr=F('elo') * 2 / ((1 + pow(math.e, 1/168 * pow(F('time_delta'), 0.63))) * 
-    #             (1 + pow(math.e, -0.33 * F('matches_played')))))
+    # Calculate MMR
     players = players.annotate(mmr=mmr_calc(F('elo'), F('matches_played'), F('time_delta')))
 
+    # Get highest and lowest MMR values
+    highest_mmr = players.aggregate(Max('mmr'))['mmr__max']
+    lowest_mmr = players.aggregate(Min('mmr'))['mmr__min']
+
     players = players.order_by('-mmr')
 
-    context = {'leaderboard_code': gamemode.short_code,
-               'leaderboard_name': gamemode.name, 'players': players}
+    context = {
+        'leaderboard_code': gamemode.short_code,
+        'leaderboard_name': gamemode.name,
+        'players': players,
+        'highest_mmr': highest_mmr,
+        'lowest_mmr': lowest_mmr
+    }
 
     return render(request, "ranked/leaderboard.html", context)