import { useState, useEffect, useCallback } from 'react';
import { useDubs } from '../provider';
import type { JackpotRound, JackpotLastWinner } from '../types';

export interface UseJackpotResult {
  round: JackpotRound | null;
  lastWinner: JackpotLastWinner | null;
  loading: boolean;
  error: Error | null;
  refetch: () => void;
}

export function useJackpot(): UseJackpotResult {
  const { client } = useDubs();
  const [round, setRound] = useState<JackpotRound | null>(null);
  const [lastWinner, setLastWinner] = useState<JackpotLastWinner | null>(null);
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState<Error | null>(null);

  const fetch = useCallback(async () => {
    setLoading(true);
    setError(null);
    try {
      const result = await client.getJackpotCurrent();
      setRound(result.round);
      setLastWinner(result.lastWinner);
    } catch (err) {
      setError(err instanceof Error ? err : new Error(String(err)));
    } finally {
      setLoading(false);
    }
  }, [client]);

  useEffect(() => { fetch(); }, [fetch]);

  return { round, lastWinner, loading, error, refetch: fetch };
}