import React, { useContext, CSSProperties, useCallback } from 'react';
import { ProductContext } from './ProductCard';

import styles from '../styles/styles.module.css';

export interface ProductButtonsProps {
    className?: string;
    style?: CSSProperties;
}

export const ProductButtons = ( { className, style }: ProductButtonsProps ) => {

    // TODO: maxCount
    const { increaseBy, counter, maxCount } = useContext( ProductContext );

    // TODO: isMaxReached = useCallback, [ counter, maxCount]
    // TRUE si el counter === maxCount, de lo contrario FALSE
    const isMaxReached = useCallback(
        () => !!maxCount && counter === maxCount,
        [counter, maxCount],
    )

    return (
        <div 
            className={ ` ${ styles.buttonsContainer} ${ className }` }
            style={ style }
        >
            <button 
                className={ styles.buttonMinus }
                onClick={ () => increaseBy( -1 ) }
            >
                -
            </button>

            <div className={ styles.countLabel } >{ counter }</div>
            
            <button 
                className={ ` ${ styles.buttonAdd } ${ isMaxReached() && styles.disabled }` }
                onClick={ () => increaseBy( 1 ) }
            >
                +
            </button>
        </div>
    );
}