import { useEffect, useRef, useState } from "react";
import { onChangeArgs, Product, InitialValues } 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);

    // console.log(initialValues?.count)

    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});
    }


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

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


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

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