web/routes/players.py

@@ -202,6 +202,9 @@ def detail(steam_id):
         })
     map_stats_list.sort(key=lambda x: x['matches'], reverse=True)
 
+    # --- New: Recent Performance Stats ---
+    recent_stats = StatsService.get_recent_performance_stats(steam_id)
+
     return render_template('players/profile.html',
                          player=player,
                          features=features,
@@ -211,7 +214,8 @@ def detail(steam_id):
                          distribution=distribution,
                          map_stats=map_stats_list,
                          l2_stats=l2_stats,
-                         side_stats=side_stats)
+                         side_stats=side_stats,
+                         recent_stats=recent_stats)
 
 @bp.route('/comment/<int:comment_id>/like', methods=['POST'])
 def like_comment(comment_id):

web/services/stats_service.py

@@ -632,6 +632,72 @@ class StatsService:
         """
         return query_db('l2', sql, [steam_id, limit])
 
+    @staticmethod
+    def get_recent_performance_stats(steam_id):
+        """
+        Calculates Avg Rating and Rating Variance for:
+        - Last 5, 10, 15 matches
+        - Last 5, 10, 15 days
+        """
+        import numpy as np
+        from datetime import datetime, timedelta
+
+        # Fetch all match ratings with timestamps
+        sql = """
+            SELECT m.start_time, mp.rating
+            FROM fact_match_players mp
+            JOIN fact_matches m ON mp.match_id = m.match_id
+            WHERE mp.steam_id_64 = ?
+            ORDER BY m.start_time DESC
+        """
+        rows = query_db('l2', sql, [steam_id])
+        
+        if not rows:
+            return {}
+
+        # Convert to list of dicts
+        matches = [{'time': r['start_time'], 'rating': r['rating'] or 0} for r in rows]
+        
+        stats = {}
+        
+        # 1. Recent N Matches
+        for n in [5, 10, 15]:
+            subset = matches[:n]
+            if not subset:
+                stats[f'last_{n}_matches'] = {'avg': 0, 'var': 0, 'count': 0}
+                continue
+                
+            ratings = [m['rating'] for m in subset]
+            stats[f'last_{n}_matches'] = {
+                'avg': np.mean(ratings),
+                'var': np.var(ratings),
+                'count': len(ratings)
+            }
+
+        # 2. Recent N Days
+        # Use server time or max match time? usually server time 'now' is fine if data is fresh.
+        # But if data is old, 'last 5 days' might be empty. 
+        # User asked for "recent 5/10/15 days", implying calendar days from now.
+        import time
+        now = time.time()
+        
+        for d in [5, 10, 15]:
+            cutoff = now - (d * 24 * 3600)
+            subset = [m for m in matches if m['time'] >= cutoff]
+            
+            if not subset:
+                stats[f'last_{d}_days'] = {'avg': 0, 'var': 0, 'count': 0}
+                continue
+                
+            ratings = [m['rating'] for m in subset]
+            stats[f'last_{d}_days'] = {
+                'avg': np.mean(ratings),
+                'var': np.var(ratings),
+                'count': len(ratings)
+            }
+            
+        return stats
+
     @staticmethod
     def get_roster_stats_distribution(target_steam_id):
         """

web/templates/players/profile.html

@@ -141,6 +141,66 @@
         </div>
     </div>
 
+    <!-- 2.2 Recent Performance Stability -->
+    <div class="bg-white dark:bg-slate-800 shadow-lg rounded-2xl p-6 border border-gray-100 dark:border-slate-700">
+        <h3 class="text-lg font-bold text-gray-900 dark:text-white mb-6 flex items-center gap-2">
+            <span>📅</span> 近期表现稳定性 (Recent Stability)
+        </h3>
+        
+        <div class="grid grid-cols-1 md:grid-cols-2 gap-8">
+            <!-- By Match Count -->
+            <div>
+                <h4 class="text-sm font-bold text-gray-500 uppercase tracking-wider mb-4">By Matches</h4>
+                <div class="space-y-4">
+                    {% for n in [5, 10, 15] %}
+                    {% set key = 'last_' ~ n ~ '_matches' %}
+                    {% set data = recent_stats.get(key) %}
+                    <div class="flex items-center justify-between p-3 bg-gray-50 dark:bg-slate-700/50 rounded-lg border border-gray-100 dark:border-slate-600">
+                        <div class="flex items-center gap-3">
+                            <span class="text-2xl font-black text-gray-300 dark:text-slate-600 w-8 text-center">{{ n }}</span>
+                            <span class="text-xs font-bold text-gray-500 uppercase">Matches</span>
+                        </div>
+                        <div class="text-right">
+                            {% if data and data.count > 0 %}
+                            <div class="text-xl font-black text-gray-900 dark:text-white">{{ "{:.2f}".format(data.avg) }} <span class="text-xs text-gray-400 font-normal">Rating</span></div>
+                            <div class="text-xs text-gray-500 font-mono">Var: {{ "{:.3f}".format(data.var) }}</div>
+                            {% else %}
+                            <span class="text-xs text-gray-400">N/A</span>
+                            {% endif %}
+                        </div>
+                    </div>
+                    {% endfor %}
+                </div>
+            </div>
+
+            <!-- By Days -->
+            <div>
+                <h4 class="text-sm font-bold text-gray-500 uppercase tracking-wider mb-4">By Days</h4>
+                <div class="space-y-4">
+                    {% for n in [5, 10, 15] %}
+                    {% set key = 'last_' ~ n ~ '_days' %}
+                    {% set data = recent_stats.get(key) %}
+                    <div class="flex items-center justify-between p-3 bg-gray-50 dark:bg-slate-700/50 rounded-lg border border-gray-100 dark:border-slate-600">
+                        <div class="flex items-center gap-3">
+                            <span class="text-2xl font-black text-gray-300 dark:text-slate-600 w-8 text-center">{{ n }}</span>
+                            <span class="text-xs font-bold text-gray-500 uppercase">Days</span>
+                        </div>
+                        <div class="text-right">
+                            {% if data and data.count > 0 %}
+                            <div class="text-xl font-black text-gray-900 dark:text-white">{{ "{:.2f}".format(data.avg) }} <span class="text-xs text-gray-400 font-normal">Rating</span></div>
+                            <div class="text-xs text-gray-500 font-mono">Var: {{ "{:.3f}".format(data.var) }}</div>
+                            <div class="text-[10px] text-gray-400">{{ data.count }} matches</div>
+                            {% else %}
+                            <span class="text-xs text-gray-400">No matches</span>
+                            {% endif %}
+                        </div>
+                    </div>
+                    {% endfor %}
+                </div>
+            </div>
+        </div>
+    </div>
+
     <!-- 2.5 Detailed Stats Panel -->
     <div class="bg-white dark:bg-slate-800 shadow-lg rounded-2xl p-6 border border-gray-100 dark:border-slate-700">
         <h3 class="text-lg font-bold text-gray-900 dark:text-white mb-6 flex items-center gap-2">