<?php

namespace Akeneo\Tool\Component\Connector\Exception;

use Akeneo\Pim\Enrichment\Component\Product\Model\ProductPriceInterface;
use Akeneo\Tool\Component\Batch\Item\InvalidItemException as BaseInvalidItemException;
use Akeneo\Tool\Component\Batch\Item\InvalidItemInterface;
use Symfony\Component\Validator\ConstraintViolationInterface;
use Symfony\Component\Validator\ConstraintViolationListInterface;

/**
 * Extends the {@link  Akeneo\Tool\Component\Batch\Item\InvalidItemException}
 * to be able to build one from a Symfony constraints violations list.
 *
 * @author    Julien Janvier <jjanvier@akeneo.com>
 * @copyright 2016 Akeneo SAS (http://www.akeneo.com)
 * @license   http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */
class InvalidItemFromViolationsException extends BaseInvalidItemException
{
    /** @var ConstraintViolationListInterface */
    protected $violations;

    /**
     * @param ConstraintViolationListInterface|null $violations
     * @param InvalidItemInterface                  $item
     * @param array                                 $messageParameters
     * @param int                                   $code
     * @param \Exception|null                       $previous
     */
    public function __construct(
        ConstraintViolationListInterface $violations,
        InvalidItemInterface $item,
        array $messageParameters = [],
        $code = 0,
        \Exception $previous = null
    ) {
        $this->violations = $violations;

        $errors = [];
        /** @var ConstraintViolationInterface $violation */
        foreach ($violations as $violation) {
            // TODO: re-format the message, property path doesn't exist for class constraint
            // TODO: for instance cf VariantGroupAxis
            $invalidValue = $this->formatInvalidValue($violation->getInvalidValue());
            $propertyPath = str_replace('-<all_channels>', '', $violation->getPropertyPath());
            $propertyPath = str_replace('-<all_locales>', '', $propertyPath);

            if (null === $invalidValue) {
                $error = sprintf('%s: %s', $propertyPath, $violation->getMessage());
            } else {
                $error = sprintf('%s: %s: %s', $propertyPath, $violation->getMessage(), $invalidValue);
            }

            $errors[] = $error . PHP_EOL;
        }

        parent::__construct(implode("\n", $errors), $item, $messageParameters, $code, $previous);
    }

    private function formatInvalidValue($invalidValue): ?string
    {
        if (is_scalar($invalidValue)) {
            return (string)$invalidValue;
        }
        if ($invalidValue instanceof ProductPriceInterface) {
            return sprintf('%s %s', $invalidValue->getData(), $invalidValue->getCurrency());
        }
        if (is_object($invalidValue) && method_exists($invalidValue, '__toString')) {
            return (string) $invalidValue;
        }
        if (is_iterable($invalidValue)) {
            $formatted = [];
            foreach ($invalidValue as $item) {
                $formattedItem = $this->formatInvalidValue($item);
                if (null !== $formattedItem) {
                    $formatted[] = $formattedItem;
                }
            }

            return [] === $formatted ? null : '[' . implode(', ', $formatted) . ']';
        }

        return null;
    }
}