import { useState, useEffect, useRef } 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(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,
      maxCount: initialValues?.maxCount,
      isMaxCountReached: !!initialValues?.maxCount && initialValues?.maxCount === counter,
      increaseBy,
      reset
   };
};