"use client";

import { useState, useEffect } from "react";

interface DailyToken {
  name: string;
  value: number;
}

interface DailyConnection {
  name: string;
  value: number;
}

interface ModelDistribution {
  name: string;
  value: number;
}

interface StatsData {
  dailyTokens: DailyToken[];
  dailyConnections: DailyConnection[];
  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
  };
}