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

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


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

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 });
    }

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

    }, [value])


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


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


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