import { useEffect, useRef, useState } from 'react';
import { InitialValues, Product, onChangeArgs } from '../interfaces';

interface Props {
  product: Product;
  onChange?: (args: onChangeArgs) => void;
  value?: number;
  initialValues?: InitialValues;
}

const useProducts = ({ onChange, product, value = 0, initialValues }: Props) => {
  const [counter, setCounter] = useState<number>(initialValues?.count || value);
  const isMounted = useRef(false);

  const increaseBy = (value: number) => {
    const newValue = initialValues?.maxCount
      ? Math.min(Math.max(counter + value, 0), initialValues?.maxCount)
      : Math.max(counter + value, 0);

    setCounter(newValue);

    onChange && onChange({ count: newValue, product });
  };

  const reset = () => {
    setCounter(initialValues?.count || value);
  };

  useEffect(() => {
    if (!isMounted.current) return;

    setCounter(value);
  }, [value]);

  useEffect(() => {
    isMounted.current = true;
  }, [value]);

  return {
    counter,
    isMaxCountReached: !!initialValues?.maxCount && initialValues?.maxCount === counter,
    maxCount: initialValues?.maxCount,
    increaseBy,
    reset,
  };
};

export default useProducts;