SubMiner/stats/src/hooks/useStreakCalendar.ts

import { useState, useEffect } from 'react';
import { getStatsClient } from './useStatsApi';
import type { StreakCalendarDay } from '../types/stats';

export function useStreakCalendar(days = 90) {
  const [calendar, setCalendar] = useState<StreakCalendarDay[]>([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    let cancelled = false;
    getStatsClient()
      .getStreakCalendar(days)
      .then((data) => { if (!cancelled) setCalendar(data); })
      .catch((err: Error) => { if (!cancelled) setError(err.message); })
      .finally(() => { if (!cancelled) setLoading(false); });
    return () => { cancelled = true; };
  }, [days]);

  return { calendar, loading, error };
}