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)


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