Lambda-School-Labs/shopping-cart-be

const Validator = require('validator');
const isEmpty = require('is-empty');

function validateProductInput(data) {
    const errors = {};
    // Convert empty fields to an empty string so we can use validator functions
    let { productName, description, price, stock } = data;
    productName = productName || '';
    description = description || '';
    price = price || '';

    stock = stock || '';

    // Name checks
    if (Validator.isEmpty(productName)) {
        errors.name = 'Name field is required';
    }

    // description checks
    if (Validator.isEmpty(description)) {
        errors.description = 'Description field is required';
    }

    // price checks
    if (!price) {
        errors.price = 'Price field is required';
    }
    else if (isNaN(price)) {
        errors.price = 'Price must be a number';
    }
    else if (Number(price) < 0) {
        errors.price = 'Price cant be less than 1';
    }

    // stock checks
    if (stock && isNaN(stock)) {
        errors.stock = 'Stock must be a number';
    }
    else if (stock && Number(stock) < 0) {
        errors.stock = 'Stock cant be less than 1';
    }

    return {
        errors,
        isValid: isEmpty(errors)
    };
}

module.exports = validateProductInput;