/**
 * External dependencies
 */
import { __ } from '@wordpress/i18n';
import {
	ProductStatus,
	ProductType,
	Product,
	ProductDimensions,
} from '@woocommerce/data';
import type { FormErrors } from '@woocommerce/components';

export const validate = (
	values: Partial< Product< ProductStatus, ProductType > >
) => {
	const errors: FormErrors< typeof values > = {};
	if ( ! values.name?.length ) {
		errors.name = __( 'This field is required.', 'woocommerce' );
	}

	if ( values.name && values.name.length > 120 ) {
		errors.name = __(
			'Please enter a product name shorter than 120 characters.',
			'woocommerce'
		);
	}

	if ( values.regular_price && ! /^[0-9.,]+$/.test( values.regular_price ) ) {
		errors.regular_price = __(
			'Please enter a price with one monetary decimal point without thousand separators and currency symbols.',
			'woocommerce'
		);
	}

	if ( values.sale_price && ! /^[0-9.,]+$/.test( values.sale_price ) ) {
		errors.sale_price = __(
			'Please enter a price with one monetary decimal point without thousand separators and currency symbols.',
			'woocommerce'
		);
	}

	if (
		values.sale_price &&
		( ! values.regular_price ||
			parseFloat( values.sale_price ) >=
				parseFloat( values?.regular_price ) )
	) {
		errors.sale_price = __(
			'Sale price cannot be equal to or higher than list price.',
			'woocommerce'
		);
	}

	if ( values.dimensions?.width && +values.dimensions.width <= 0 ) {
		errors.dimensions = {
			width: __( 'Width must be higher than zero.', 'woocommerce' ),
		};
	}

	if ( values.dimensions?.length && +values.dimensions.length <= 0 ) {
		errors.dimensions = {
			...( ( errors.dimensions as FormErrors< ProductDimensions > ) ??
				{} ),
			length: __( 'Length must be higher than zero.', 'woocommerce' ),
		};
	}

	if ( values.dimensions?.height && +values.dimensions.height <= 0 ) {
		errors.dimensions = {
			...( ( errors.dimensions as FormErrors< ProductDimensions > ) ??
				{} ),
			height: __( 'Height must be higher than zero.', 'woocommerce' ),
		};
	}

	if ( values.weight && +values.weight <= 0 ) {
		errors.weight = __( 'Weight must be higher than zero.', 'woocommerce' );
	}

	return errors;
};