import {GetArraySum} from './types'

/**
 * @description
 * get sum of array numbers
 *
 * @param {any[]} array - array with numbers which need sum
 * @param {boolean} shouldIgnoreNotNumber - should return NaN if in array will be NaN
 * @returns {number}
 *
 * @example
 * getArraySum([1,2,3])
 * // => 6
 *
 * getArraySum([1,2,{},3])
 * // => NaN
 *
 * getArraySum([1,2,{},3, true])
 * // => 6
 */
const getArraySum:GetArraySum = (array, shouldIgnoreNotNumber = false) => {
    const result = array.reduce((prevFunctionResult, arrayItem) => {

        if (shouldIgnoreNotNumber && isNaN(+arrayItem)) {
            return +prevFunctionResult
        } else {
            return +prevFunctionResult + +arrayItem
        }

    }, 0)

    return result
}

export default getArraySum