lf-product-card/src/hooks/useProduct.ts

Npm package deploy test using tsdx

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

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

export const useProduct = ({
  onChange,
  product,
  value = 0,
  initialValues,
}: useProductArgs) => {
  const [counter, setCounter] = useState<number>(initialValues?.count || value);

  const isMounted = useRef(false);

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

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

    // TODO: My solution
    // if (initialValues?.maxCount) {
    //   let tempValue =
    //     initialValues.maxCount >= counter + value ? counter + value : counter;
    //   const newValue = Math.max(tempValue, 0);
    //   setCounter(newValue);
    //   onChange && onChange({ count: newValue, product });
    // }
  };

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

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

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

  return {
    counter,
    isMaxCountReached:
      !!initialValues?.maxCount && initialValues.maxCount === counter,
    maxCount: initialValues?.maxCount,

    increaseBy,
    reset,
  };
};