<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\DBAL\Types;

use Doctrine\DBAL\Platforms\AbstractPlatform;

/**
 * Type that maps an SQL BLOB to a PHP resource stream
 *
 * @since 2.2
 */
class BlobType extends Type
{
    /** @override */
    public function getSQLDeclaration(array $fieldDeclaration, AbstractPlatform $platform)
    {
        return $platform->getBlobTypeDeclarationSQL($fieldDeclaration);
    }

    /**
     * Converts a value from its database representation to its PHP representation
     * of this type.
     *
     * @param mixed $value The value to convert.
     * @param AbstractPlatform $platform The currently used database platform.
     * @return mixed The PHP representation of the value.
     */
    public function convertToPHPValue($value, AbstractPlatform $platform)
    {
        if (null === $value) {
            return null;
        }

        if (is_string($value)) {
            $value = fopen('data://text/plain;base64,' . base64_encode($value), 'r');
        } 
        
        if ( ! is_resource($value)) {
            throw ConversionException::conversionFailed($value, self::BLOB);
        }

        return $value;
    }

    public function getName()
    {
        return Type::BLOB;
    }

    public function getBindingType()
    {
        return \PDO::PARAM_LOB;
    }
}
