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<?php

declare(strict_types=1);

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <[email protected]>
 *     Dariusz Rumiński <[email protected]>
 *
 * 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\Fixer\ConfigurableFixerInterface;
use PhpCsFixer\Fixer\WhitespacesAwareFixerInterface;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolverInterface;
use PhpCsFixer\FixerConfiguration\FixerOptionBuilder;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
use PhpCsFixer\Preg;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;

/**
 * @author Filippo Tessarotto <[email protected]>
 * @author Julien Falque <[email protected]>
 */
final class AlignMultilineCommentFixer extends AbstractFixer implements ConfigurableFixerInterface, WhitespacesAwareFixerInterface
{
    /**
     * @var null|int[]
     */
    private $tokenKinds;

    public function configure(array $configuration): void
    {
        parent::configure($configuration);

        $this->tokenKinds = [T_DOC_COMMENT];
        if ('phpdocs_only' !== $this->configuration['comment_type']) {
            $this->tokenKinds[] = T_COMMENT;
        }
    }

    public function getDefinition(): FixerDefinitionInterface
    {
        return new FixerDefinition(
            'Each line of multi-line DocComments must have an asterisk [PSR-5] and must be aligned with the first one.',
            [
                new CodeSample(
                    '<?php
    /**
            * This is a DOC Comment
with a line not prefixed with asterisk

   */
'
                ),
                new CodeSample(
                    '<?php
    /*
            * This is a doc-like multiline comment
*/
',
                    ['comment_type' => 'phpdocs_like']
                ),
                new CodeSample(
                    '<?php
    /*
            * This is a doc-like multiline comment
with a line not prefixed with asterisk

   */
',
                    ['comment_type' => 'all_multiline']
                ),
            ]
        );
    }

    /**
     * {@inheritdoc}
     *
     * Must run before CommentToPhpdocFixer, GeneralPhpdocAnnotationRemoveFixer, GeneralPhpdocTagRenameFixer, NoBlankLinesAfterPhpdocFixer, NoEmptyPhpdocFixer, NoSuperfluousPhpdocTagsFixer, PhpdocAddMissingParamAnnotationFixer, PhpdocAlignFixer, PhpdocAnnotationWithoutDotFixer, PhpdocInlineTagNormalizerFixer, PhpdocLineSpanFixer, PhpdocNoAccessFixer, PhpdocNoAliasTagFixer, PhpdocNoEmptyReturnFixer, PhpdocNoPackageFixer, PhpdocNoUselessInheritdocFixer, PhpdocOrderByValueFixer, PhpdocOrderFixer, PhpdocParamOrderFixer, PhpdocReadonlyClassCommentToKeywordFixer, PhpdocReturnSelfReferenceFixer, PhpdocSeparationFixer, PhpdocSingleLineVarSpacingFixer, PhpdocSummaryFixer, PhpdocTagCasingFixer, PhpdocTagTypeFixer, PhpdocToParamTypeFixer, PhpdocToPropertyTypeFixer, PhpdocToReturnTypeFixer, PhpdocTrimConsecutiveBlankLineSeparationFixer, PhpdocTrimFixer, PhpdocTypesOrderFixer, PhpdocVarAnnotationCorrectOrderFixer, PhpdocVarWithoutNameFixer.
     * Must run after ArrayIndentationFixer.
     */
    public function getPriority(): int
    {
        return 27;
    }

    public function isCandidate(Tokens $tokens): bool
    {
        return $tokens->isAnyTokenKindsFound($this->tokenKinds);
    }

    protected function applyFix(\SplFileInfo $file, Tokens $tokens): void
    {
        $lineEnding = $this->whitespacesConfig->getLineEnding();
        foreach ($tokens as $index => $token) {
            if (!$token->isGivenKind($this->tokenKinds)) {
                continue;
            }

            $whitespace = '';
            $previousIndex = $index - 1;

            if ($tokens[$previousIndex]->isWhitespace()) {
                $whitespace = $tokens[$previousIndex]->getContent();
                --$previousIndex;
            }

            if ($tokens[$previousIndex]->isGivenKind(T_OPEN_TAG)) {
                $whitespace = Preg::replace('/\S/', '', $tokens[$previousIndex]->getContent()).$whitespace;
            }

            if (!Preg::match('/\R(\h*)$/', $whitespace, $matches)) {
                continue;
            }

            if ($token->isGivenKind(T_COMMENT) && 'all_multiline' !== $this->configuration['comment_type'] && Preg::match('/\R(?:\R|\s*[^\s\*])/', $token->getContent())) {
                continue;
            }

            $indentation = $matches[1];
            $lines = Preg::split('/\R/u', $token->getContent());

            foreach ($lines as $lineNumber => $line) {
                if (0 === $lineNumber) {
                    continue;
                }

                $line = ltrim($line);

                if ($token->isGivenKind(T_COMMENT) && (!isset($line[0]) || '*' !== $line[0])) {
                    continue;
                }

                if (!isset($line[0])) {
                    $line = '*';
                } elseif ('*' !== $line[0]) {
                    $line = '* '.$line;
                }

                $lines[$lineNumber] = $indentation.' '.$line;
            }

            $tokens[$index] = new Token([$token->getId(), implode($lineEnding, $lines)]);
        }
    }

    protected function createConfigurationDefinition(): FixerConfigurationResolverInterface
    {
        return new FixerConfigurationResolver([
            (new FixerOptionBuilder('comment_type', 'Whether to fix PHPDoc comments only (`phpdocs_only`), any multi-line comment whose lines all start with an asterisk (`phpdocs_like`) or any multi-line comment (`all_multiline`).'))
                ->setAllowedValues(['phpdocs_only', 'phpdocs_like', 'all_multiline'])
                ->setDefault('phpdocs_only')
                ->getOption(),
        ]);
    }
}