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

Este es un paquete de pruebas de despliegue en NPM

import { useEffect, useRef, useState } from "react"
import { InitialValues, Product, ProductChangeProps } from "../interfaces";

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

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,) => {
        // if (initialValues.maxCount && counter + value > initialValues.maxCount) return;
        let newValue = Math.max(counter + value, 0)
        if (initialValues?.maxCount) {
            newValue = Math.min(newValue, initialValues.maxCount)
        }
        setCounter(newValue);

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

    const reset = () => setCounter(initialValues?.count || 0);


    useEffect(() => {
        if (!isMounted.current) return;
        setCounter(value)
    }, [value])

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

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