<?php
/**
 * Checks that all file names are lowercased.
 *
 * @author    Andy Grunwald <andygrunwald@gmail.com>
 * @copyright 2010-2014 Andy Grunwald
 * @copyright 2023 PHPCSStandards and contributors
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Standards\Generic\Sniffs\Files;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;

class LowercasedFilenameSniff implements Sniff
{


    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [
            T_OPEN_TAG,
            T_OPEN_TAG_WITH_ECHO,
        ];
    }


    /**
     * Processes this sniff, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\File $phpcsFile The file being scanned.
     * @param int                         $stackPtr  The position of the current token in
     *                                               the stack passed in $tokens.
     *
     * @return int
     */
    public function process(File $phpcsFile, int $stackPtr)
    {
        $filename = $phpcsFile->getFilename();
        if ($filename === 'STDIN') {
            return $phpcsFile->numTokens;
        }

        $filename          = basename($filename);
        $lowercaseFilename = strtolower($filename);
        if ($filename !== $lowercaseFilename) {
            $data  = [
                $filename,
                $lowercaseFilename,
            ];
            $error = 'Filename "%s" doesn\'t match the expected filename "%s"';
            $phpcsFile->addError($error, $stackPtr, 'NotFound', $data);
            $phpcsFile->recordMetric($stackPtr, 'Lowercase filename', 'no');
        } else {
            $phpcsFile->recordMetric($stackPtr, 'Lowercase filename', 'yes');
        }

        // Ignore the rest of the file.
        return $phpcsFile->numTokens;
    }
}
