Initial commit

app/routes/leaderboard.py

@@ -0,0 +1,56 @@
+from flask import Blueprint, render_template
+from app.auth import login_required
+from app.db import query
+
+bp = Blueprint("leaderboard", __name__)
+
+
+@bp.route("/leaderboard")
+@login_required
+def index():
+    # Get all users with their weight stats
+    users = query("""
+        SELECT
+            u.id,
+            u.display_name,
+            u.username,
+            u.starting_weight_kg,
+            u.goal_weight_kg,
+            (SELECT weight_kg FROM checkins WHERE user_id = u.id ORDER BY checked_in_at ASC LIMIT 1) as first_weight,
+            (SELECT weight_kg FROM checkins WHERE user_id = u.id ORDER BY checked_in_at DESC LIMIT 1) as current_weight,
+            (SELECT COUNT(*) FROM checkins WHERE user_id = u.id) as total_checkins,
+            (SELECT checked_in_at FROM checkins WHERE user_id = u.id ORDER BY checked_in_at DESC LIMIT 1) as last_checkin
+        FROM users u
+        ORDER BY u.created_at
+    """)
+
+    # Calculate rankings
+    ranked = []
+    for u in users:
+        start_w = float(u["starting_weight_kg"] or u["first_weight"] or 0)
+        current_w = float(u["current_weight"] or start_w)
+
+        if start_w > 0:
+            weight_lost = start_w - current_w
+            pct_lost = round((weight_lost / start_w) * 100, 1)
+        else:
+            weight_lost = 0
+            pct_lost = 0
+
+        goal = float(u["goal_weight_kg"]) if u["goal_weight_kg"] else None
+        goal_progress = None
+        if goal and start_w > goal:
+            total_to_lose = start_w - goal
+            goal_progress = min(100, round((weight_lost / total_to_lose) * 100, 1)) if total_to_lose > 0 else 0
+
+        ranked.append({
+            **u,
+            "weight_lost": round(weight_lost, 1),
+            "pct_lost": pct_lost,
+            "goal_progress": goal_progress,
+        })
+
+    # Sort by % lost (descending)
+    ranked.sort(key=lambda x: x["pct_lost"], reverse=True)
+
+    return render_template("leaderboard.html", ranked=ranked)