#!/usr/bin/env php
<?php

/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * This file is part of a Moko Consulting project.
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: MokoStandards.Scripts.Validate
 * INGROUP: MokoStandards
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/moko-platform
 * PATH: /validate/check_no_secrets.php
 * BRIEF: Checks for potential secrets in committed files (advisory)
 */

declare(strict_types=1);

require_once __DIR__ . '/../../vendor/autoload.php';

use MokoEnterprise\CliFramework;

/**
 * Scans all tracked non-binary files for common secret patterns (advisory — always exits 0).
 */
class CheckNoSecrets extends CliFramework
{
    /** Regex matching suspicious key=value or key: value assignments. */
    private const SECRET_PATTERN = '/(password|api[_\-]?key|secret|token|private[_\-]?key)\s*[:=]\s*["\'][^"\']{8,}/i';

    /**
     * Substrings that mark a line as a known-safe false positive.
     * Dolibarr CSRF token functions generate nonces at runtime — not credentials.
     */
    private const SAFE_SUBSTRINGS = ['newToken()', 'checkToken()', 'currentToken()'];

    /** Binary file extensions to skip. */
    private const BINARY_EXTENSIONS = ['jpg', 'jpeg', 'png', 'gif', 'pdf', 'zip', 'tar', 'gz'];

    /**
     * Configure available arguments.
     */
    protected function configure(): void
    {
        $this->setDescription('Checks for potential secrets in committed files (advisory)');
        $this->addArgument('--path', 'Repository path to check', '.');
    }

    /**
     * Run the secrets scan (advisory — always exits 0).
     *
     * @return int  Exit code: always 0.
     */
    protected function run(): int
    {
        $path   = $this->getArgument('--path');
        $output = shell_exec('git -C ' . escapeshellarg($path) . ' ls-files 2>/dev/null') ?? '';
        $all    = array_values(array_filter(explode("\n", $output)));
        $files  = array_filter($all, function (string $f): bool {
            return !in_array(strtolower(pathinfo($f, PATHINFO_EXTENSION)), self::BINARY_EXTENSIONS, true);
        });
        $files = array_values($files);
        $total = count($files);
        $found = 0;

        $this->section('Scanning for secret patterns');

        foreach ($files as $i => $file) {
            $this->progress($i + 1, $total, $file);
            $fullPath = $path . '/' . $file;
            if (!is_file($fullPath)) {
                continue;
            }
            $lines     = explode("\n", (string) file_get_contents($fullPath));
            $flagged   = false;
            foreach ($lines as $line) {
                if (!preg_match(self::SECRET_PATTERN, $line)) {
                    continue;
                }
                // Skip known-safe patterns (e.g. Dolibarr CSRF token functions)
                $safe = false;
                foreach (self::SAFE_SUBSTRINGS as $sub) {
                    if (str_contains($line, $sub)) {
                        $safe = true;
                        break;
                    }
                }
                if (!$safe) {
                    $flagged = true;
                    break;
                }
            }
            if ($flagged) {
                $this->progress($i + 1, $total, '', true);
                $this->status(false, $file, 'potential secret pattern detected');
                $found++;
            }
        }
        $this->progress($total, $total, '', true);

        $this->printSummary($total - $found, $found, $this->elapsed());

        if ($found > 0) {
            $this->log('WARNING', 'Advisory — review flagged files manually');
        }

        return 0;
    }
}

$script = new CheckNoSecrets('check_no_secrets', 'Checks for potential secrets in committed files');
exit($script->execute());