filter leaderboard by session

app.py

@@ -69,14 +69,36 @@ def home() -> str:
 @app.get("/leaderboard")
 def leaderboard() -> str:
     events = load_events(DATA_PATH)
-    sessions = build_session_summaries(events)
-    board = build_leaderboard(sessions)
-    chart_data = cumulative_profit_series(sessions)
+    all_sessions = build_session_summaries(events)
+    selected_session_date = request.args.get("through_session", "").strip()
+    valid_session_dates = {session.session_date for session in all_sessions}
+
+    if selected_session_date not in valid_session_dates:
+        selected_session_date = ""
+
+    filtered_sessions = all_sessions
+    if selected_session_date:
+        filtered_sessions = [
+            session
+            for session in all_sessions
+            if session.session_date <= selected_session_date
+        ]
+
+    board = build_leaderboard(filtered_sessions)
+    chart_data = cumulative_profit_series(filtered_sessions)
     return render_template(
         "leaderboard.html",
         leaderboard=board,
-        session_count=len(sessions),
+        session_count=len(filtered_sessions),
+        total_session_count=len(all_sessions),
         chart_data=chart_data,
+        available_sessions=all_sessions,
+        selected_session_date=selected_session_date,
+        selected_session_label=(
+            safe_date_label(selected_session_date)
+            if selected_session_date
+            else "Latest session"
+        ),
     )
 
 

static/css/style.css

@@ -576,6 +576,45 @@ td a:hover {
     color: var(--accent-2);
 }
 
+.leaderboard-controls {
+    display: grid;
+    gap: 8px;
+    justify-items: end;
+}
+
+.session-filter-form {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    flex-wrap: wrap;
+}
+
+.session-filter-label {
+    color: var(--text-muted);
+    font-size: 0.9rem;
+    font-weight: 600;
+}
+
+.session-filter-select {
+    min-width: 220px;
+    min-height: 42px;
+    padding: 0 14px;
+    border: 1px solid var(--line-strong);
+    border-radius: 12px;
+    background: rgba(255, 255, 255, 0.035);
+    color: var(--text);
+    outline: none;
+}
+
+.session-filter-select:focus {
+    border-color: rgba(240, 138, 56, 0.42);
+    box-shadow: 0 0 0 4px rgba(240, 138, 56, 0.12);
+}
+
+.compact-button {
+    min-height: 42px;
+}
+
 .positive,
 .negative,
 .neutral {
@@ -770,3 +809,19 @@ td a:hover {
         height: min(66vh, 680px);
     }
 }
+
+@media (max-width: 860px) {
+    .leaderboard-header,
+    .leaderboard-controls {
+        align-items: start;
+        justify-items: start;
+    }
+
+    .session-filter-form {
+        width: 100%;
+    }
+
+    .session-filter-select {
+        width: 100%;
+    }
+}

templates/leaderboard.html

@@ -5,7 +5,7 @@
     <div>
         <p class="eyebrow">All-time results</p>
         <h1>Leaderboard</h1>
-        <p class="muted-text">Track who is up, who is chasing, and how everyone has moved across {{ session_count }} recorded sessions.</p>
+        <p class="muted-text">Track who is up, who is chasing, and how everyone has moved across {{ session_count }} recorded sessions{% if selected_session_date %} through {{ selected_session_label }}{% endif %}.</p>
     </div>
 </section>
 
@@ -30,7 +30,8 @@
         <h2>Table snapshot</h2>
         <div class="stat-list">
             <div class="stat-row"><span>Players tracked</span><strong>{{ leaderboard|length }}</strong></div>
-            <div class="stat-row"><span>Sessions tracked</span><strong>{{ session_count }}</strong></div>
+            <div class="stat-row"><span>Sessions tracked</span><strong>{{ session_count }}{% if total_session_count != session_count %} / {{ total_session_count }}{% endif %}</strong></div>
+            <div class="stat-row"><span>Through session</span><strong>{{ selected_session_label }}</strong></div>
             <div class="stat-row"><span>Best player</span><strong>{% if leaderboard %}{{ leaderboard[0].player_name }}{% else %}—{% endif %}</strong></div>
             <div class="stat-row"><span>Worst player</span><strong>{% if leaderboard %}{{ leaderboard[-1].player_name }}{% else %}—{% endif %}</strong></div>
         </div>
@@ -38,12 +39,26 @@
 </section>
 
 <section class="panel">
-    <div class="panel-header">
+    <div class="panel-header leaderboard-header">
         <div>
             <p class="eyebrow">Standings</p>
             <h2>All-time leaderboard</h2>
         </div>
-        <p class="muted-text small">Click any column to sort.</p>
+        <div class="leaderboard-controls">
+            <form method="get" class="session-filter-form">
+                <label for="through_session" class="session-filter-label">Through session</label>
+                <select id="through_session" name="through_session" class="session-filter-select" onchange="this.form.submit()">
+                    <option value="" {% if not selected_session_date %}selected{% endif %}>Latest session</option>
+                    {% for session in available_sessions %}
+                    <option value="{{ session.session_date }}" {% if selected_session_date == session.session_date %}selected{% endif %}>{{ session.session_date | pretty_date }}</option>
+                    {% endfor %}
+                </select>
+                {% if selected_session_date %}
+                <a class="ghost-button compact-button" href="{{ url_for('leaderboard') }}">Reset</a>
+                {% endif %}
+            </form>
+            <p class="muted-text small">Click any column to sort.</p>
+        </div>
     </div>
 
     <div class="table-wrap">