<?php

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Fixer\Phpdoc;

use PhpCsFixer\AbstractFixer;
use PhpCsFixer\DocBlock\DocBlock;
use PhpCsFixer\Fixer\ConfigurationDefinitionFixerInterface;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolverRootless;
use PhpCsFixer\FixerConfiguration\FixerOptionBuilder;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\Tokenizer\Tokens;
use Symfony\Component\OptionsResolver\Exception\InvalidOptionsException;
use Symfony\Component\OptionsResolver\Options;

/**
 * Case sensitive tag replace fixer (does not process inline tags like {@inheritdoc}).
 *
 * @author Graham Campbell <graham@alt-three.com>
 * @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
 * @author SpacePossum
 */
final class PhpdocNoAliasTagFixer extends AbstractFixer implements ConfigurationDefinitionFixerInterface
{
    /**
     * {@inheritdoc}
     */
    public function isCandidate(Tokens $tokens)
    {
        return $tokens->isTokenKindFound(T_DOC_COMMENT);
    }

    /**
     * {@inheritdoc}
     */
    public function getDefinition()
    {
        return new FixerDefinition(
            'No alias PHPDoc tags should be used.',
            array(
                new CodeSample(
                    '<?php
/**
 * @property string $foo
 * @property-read string $bar
 *
 * @link baz
 */
final class Example
{
}
'
                ),
                new CodeSample(
                    '<?php
/**
 * @property string $foo
 * @property-read string $bar
 *
 * @link baz
 */
final class Example
{
}
',
                    array('replacements' => array('link' => 'website'))
                ),
            )
        );
    }

    /**
     * {@inheritdoc}
     */
    protected function applyFix(\SplFileInfo $file, Tokens $tokens)
    {
        $searchFor = array_keys($this->configuration['replacements']);

        foreach ($tokens as $token) {
            if (!$token->isGivenKind(T_DOC_COMMENT)) {
                continue;
            }

            $doc = new DocBlock($token->getContent());
            $annotations = $doc->getAnnotationsOfType($searchFor);

            if (empty($annotations)) {
                continue;
            }

            foreach ($annotations as $annotation) {
                $annotation->getTag()->setName($this->configuration['replacements'][$annotation->getTag()->getName()]);
            }

            $token->setContent($doc->getContent());
        }
    }

    /**
     * {@inheritdoc}
     */
    protected function createConfigurationDefinition()
    {
        $replacements = new FixerOptionBuilder('replacements', 'Mapping between replaced annotations with new ones.');
        $replacements = $replacements
            ->setAllowedTypes(array('array'))
            ->setNormalizer(function (Options $options, $value) {
                $normalizedValue = array();

                foreach ($value as $from => $to) {
                    if (!is_string($from)) {
                        throw new InvalidOptionsException('Tag to replace must be a string.');
                    }

                    if (!is_string($to)) {
                        throw new InvalidOptionsException(sprintf(
                            'Tag to replace to from "%s" must be a string.',
                            $from
                        ));
                    }

                    if (1 !== preg_match('#^\S+$#', $to) || false !== strpos($to, '*/')) {
                        throw new InvalidOptionsException(sprintf(
                            'Tag "%s" cannot be replaced by invalid tag "%s".',
                            $from,
                            $to
                        ));
                    }

                    $normalizedValue[trim($from)] = trim($to);
                }

                foreach ($normalizedValue as $from => $to) {
                    if (isset($normalizedValue[$to])) {
                        throw new InvalidOptionsException(sprintf(
                            'Cannot change tag "%1$s" to tag "%2$s", as the tag "%2$s" is configured to be replaced to "%3$s".',
                            $from,
                            $to,
                            $normalizedValue[$to]
                        ));
                    }
                }

                return $normalizedValue;
            })
            ->setDefault(array(
                'property-read' => 'property',
                'property-write' => 'property',
                'type' => 'var',
                'link' => 'see',
            ))
            ->getOption()
        ;

        return new FixerConfigurationResolverRootless('replacements', array($replacements));
    }
}
