Implement /api/v1/leaderboard

routes/Ranking.py

@@ -0,0 +1,57 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session as DBSession
+from sqlalchemy import desc
+from database import SessionLocal, PlayerRank
+
+router = APIRouter()
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+@router.get("/leaderboard")
+async def get_leaderboard(db: DBSession = Depends(get_db)):
+    try:
+        top_100_query = (
+            db.query(PlayerRank.PId)
+            .order_by(desc(PlayerRank.FesPower))
+            .limit(100)
+            .all()
+        )
+        top_100_pids = {row for row in top_100_query}
+        modes = [0, 1, 2]
+
+        leaderboard = {}
+
+        for mode in modes:
+            top_players = (
+                db.query(PlayerRank)
+                .filter(PlayerRank.GameMode == mode)
+                .order_by(desc(PlayerRank.RankingScore))
+                .limit(9)
+                .all()
+            )
+
+            mode_results = []
+            for player in top_players:
+                mode_results.append({
+                    "PId": player.PId,
+                    "MiiName": player.MiiName,
+                    "Rank": player.Rank,
+                    "WinSum": player.WinSum,
+                    "LoseSum": player.LoseSum,
+                    "RankingScore": round(player.RankingScore, 2),
+                    "FesPower": player.FesPower,
+                    "is_top_100_fes": player.PId in top_100_pids
+                })
+            
+            leaderboard[f"mode_{mode}"] = mode_results
+
+        return leaderboard
+
+    except Exception as e:
+        print(f"Error fetching leaderboard: {e}")
+        return {"error": str(e)}