first commit

hooks/useStats.ts

@@ -0,0 +1,54 @@
+"use client";
+
+import { useState, useEffect } from "react";
+
+interface DailyToken {
+  name: string;
+  value: number;
+}
+
+interface ModelDistribution {
+  name: string;
+  value: number;
+}
+
+interface StatsData {
+  dailyTokens: DailyToken[];
+  modelDistribution: ModelDistribution[];
+}
+
+export function useStats() {
+  const [stats, setStats] = useState<StatsData | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const fetchStats = async () => {
+    try {
+      setLoading(true);
+      setError(null);
+      
+      const response = await fetch("/api/stats");
+      if (!response.ok) {
+        throw new Error("Erreur lors du chargement des statistiques");
+      }
+      
+      const data = await response.json();
+      setStats(data);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : "Erreur inconnue");
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    fetchStats();
+  }, []);
+
+  return {
+    stats,
+    loading,
+    error,
+    refetch: fetchStats
+  };
+}