<?php declare(strict_types=1);

namespace SmcAddressLatin\Core\Checkout\Cart;

use Shopware\Core\Content\Product\State;
use Shopware\Core\Checkout\Cart\Cart;
use Shopware\Core\Checkout\Cart\CartValidatorInterface;
use Shopware\Core\Checkout\Cart\Error\ErrorCollection;
use Shopware\Core\System\SalesChannel\SalesChannelContext;
use SmcAddressLatin\Core\Checkout\Cart\Error\ShippingAddressInvalidCharactersError;
use SmcAddressLatin\Core\Checkout\Cart\Error\ShippingAddressLengthError;

class SmcCartValidator implements CartValidatorInterface
{
    private static function contains_only_latin(?string $input): bool {
        if ($input === null) {
                return true;
        }
        if (preg_match('/[^\p{Common}\p{Latin}]/u', $input) === 0) {
                return true;
        }
        return false;
    }

    private static function is_short_enough(?string $input, int $maxlen): bool {
        if ($input === null) {
            return true;
        }
	if (strlen($input) <= $maxlen) {
            return true;
        }
	return false;
    }

    public function validate(Cart $cart, ErrorCollection $errors, SalesChannelContext $context): void
    {
        $validateShipping = $cart->getLineItems()->count() === 0
            || $cart->getLineItems()->hasLineItemWithState(State::IS_PHYSICAL);
        if (!$validateShipping) {
            return;
        }

        $ship_addr = $context->getShippingLocation()->getAddress();
	if (!$ship_addr) {
            return;
	}
        if (!$this->contains_only_latin($ship_addr->getFirstName())) {
            $errors->add(new ShippingAddressInvalidCharactersError('First Name'));
        }
        if (!$this->contains_only_latin($ship_addr->getLastName())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Last Name'));
        }
        if (!$this->contains_only_latin($ship_addr->getCity())) {
            $errors->add(new ShippingAddressInvalidCharactersError('City'));
        }
        if (!$this->contains_only_latin($ship_addr->getCompany())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Company'));
        }
        if (!$this->contains_only_latin($ship_addr->getDepartment())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Department'));
        }
        if (!$this->contains_only_latin($ship_addr->getTitle())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Title'));
        }
        if (!$this->contains_only_latin($ship_addr->getStreet())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Street'));
        }
        if (!$this->contains_only_latin($ship_addr->getAdditionalAddressLine1())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Additional Address Line 1'));
        }
        if (!$this->contains_only_latin($ship_addr->getAdditionalAddressLine2())) {
            $errors->add(new ShippingAddressInvalidCharactersError('Additional Address Line 2'));
        }

	// https://developers.shipcloud.io/carriers/ups.html
	if (!$this->is_short_enough($ship_addr->getCompany(), 35)) {
            $errors->add(new ShippingAddressLengthError('Company', 35));
        }
        if (!$this->is_short_enough($ship_addr->getStreet(), 35)) {
            $errors->add(new ShippingAddressLengthError('Street', 35));
        }
        if (!$this->is_short_enough($ship_addr->getAdditionalAddressLine1(), 35)) {
            $errors->add(new ShippingAddressLengthError('Additional Address Line 1', 35));
        }
        if (!$this->is_short_enough($ship_addr->getAdditionalAddressLine2(), 35)) {
            $errors->add(new ShippingAddressLengthError('Additional Address Line 2', 35));
        }
        if (!$this->is_short_enough($ship_addr->getCity(), 30)) {
            $errors->add(new ShippingAddressLengthError('City', 30));
        }
        if (!$this->is_short_enough($ship_addr->getZipcode(), 9)) {
            $errors->add(new ShippingAddressLengthError('Zip Code', 9));
        }
        if (!$this->is_short_enough($ship_addr->getPhoneNumber(), 15)) {
            $errors->add(new ShippingAddressLengthError('Phone Number', 15));
        }
	$name = $ship_addr->getFirstName() . " " . $ship_addr->getLastName();
        if (!$this->is_short_enough($name, 35)) {
            $errors->add(new ShippingAddressLengthError('First and Last Name', 35));
        }
    }
}