import { useMemo } from 'react';

export function useIterationData(seed = 42, points = 50) {
  function mulberry32(a:number){return function(){let t=(a+=0x6D2B79F5);t=Math.imul(t^(t>>>15),t|1);t^=t+Math.imul(t^(t>>>7),t|61);return ((t^(t>>>14))>>>0)/4294967296;};}
  return useMemo(() => {
    const rand = mulberry32(seed);
    return Array.from({ length: points }, (_, i) => ({
      iteration: i+1,
      meanDifference: Math.max(0.1, 0.8 - i*0.012 + rand()*0.1),
      groupA: 0.7 - i*0.006 + rand()*0.05,
      groupB: 0.3 + i*0.003 + rand()*0.05,
    }));
  }, [seed, points]);
}