#!/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.Templates.Scripts.Validate
 * INGROUP: MokoStandards.Templates
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/moko-platform
 * PATH: /templates/scripts/validate/validate_manifest.php
 * BRIEF: Validate a Joomla component XML manifest against MokoStandards requirements
 * NOTE: Deployed to bin/validate_manifest.php in governed WaaS component repos.
 *       Run: php bin/validate_manifest.php [--path DIR] [--verbose]
 */

declare(strict_types=1);

// Deployed to bin/validate_manifest.php in org repos — vendor/ is one level up (repo root)
require_once __DIR__ . '/../vendor/autoload.php';

use MokoEnterprise\CliFramework;

/**
 * Validates a Joomla component XML manifest against MokoStandards requirements.
 *
 * Checks performed:
 *   - XML manifest exists and is well-formed
 *   - Required manifest attributes present (type, version, method)
 *   - Required manifest elements present (name, author, authorEmail, license, version)
 *   - License is GPL-3.0-or-later
 *   - Required directories present (src/, languages/ or administrator/)
 *   - Required files present (README.md, CHANGELOG.md, LICENSE, composer.json)
 *   - SPDX-License-Identifier header present in all PHP source files
 *   - No tab characters in YAML/JSON config files
 */
class ValidateJoomlaManifest extends CliFramework
{
	protected function configure(): void
	{
		$this->setDescription('Validate a Joomla component XML manifest against MokoStandards requirements');
		$this->addArgument('--path', 'Repository root to validate', '.');
	}

	protected function run(): int
	{
		$path   = rtrim((string) $this->getArgument('--path'), '/\\');
		$passed = 0;
		$failed = 0;

		if (!is_dir($path)) {
			$this->error("Path does not exist: {$path}");
		}

		// ── Find XML manifest ─────────────────────────────────────────────
		$this->section('XML manifest');
		$manifest = $this->findManifest($path);
		if ($manifest === null) {
			$this->status(false, 'No Joomla component XML manifest found');
			$failed++;
		} else {
			$this->status(true, 'Manifest found: ' . substr($manifest, strlen($path) + 1));
			$passed++;

			// Parse and validate
			libxml_use_internal_errors(true);
			$xml = simplexml_load_file($manifest);
			if ($xml === false) {
				$this->status(false, 'Manifest is not valid XML');
				$failed++;
			} else {
				$this->status(true, 'Manifest is well-formed XML');
				$passed++;

				// Required attributes
				foreach (['type', 'version', 'method'] as $attr) {
					$ok = isset($xml[$attr]) && (string) $xml[$attr] !== '';
					$this->status($ok, "Attribute \"{$attr}\" present");
					$ok ? $passed++ : $failed++;
				}

				// Required elements
				foreach (['name', 'author', 'authorEmail', 'license', 'version'] as $elem) {
					$ok = isset($xml->{$elem}) && trim((string) $xml->{$elem}) !== '';
					$this->status($ok, "Element <{$elem}> present and non-empty");
					$ok ? $passed++ : $failed++;
				}

				// License check
				$license = trim((string) ($xml->license ?? ''));
				$okLicense = str_contains(strtolower($license), 'gpl') || str_contains($license, '3.0');
				$this->status($okLicense, "License is GPL-3.0-or-later (found: \"{$license}\")");
				$okLicense ? $passed++ : $failed++;
			}
		}

		// ── Required files ────────────────────────────────────────────────
		$this->section('Required files');
		foreach (['README.md', 'CHANGELOG.md', 'LICENSE', 'composer.json'] as $file) {
			$ok = file_exists("{$path}/{$file}");
			$this->status($ok, $file);
			$ok ? $passed++ : $failed++;
		}

		// ── Required directories ──────────────────────────────────────────
		$this->section('Required directories');
		foreach (['src'] as $dir) {
			$ok = is_dir("{$path}/{$dir}");
			$this->status($ok, $dir . '/');
			$ok ? $passed++ : $failed++;
		}

		// ── SPDX headers ──────────────────────────────────────────────────
		$this->section('SPDX-License-Identifier headers');
		$phpFiles     = $this->findFiles($path . '/src', '*.php');
		$missingHeader = 0;
		foreach ($phpFiles as $file) {
			$head = file_get_contents($file, false, null, 0, 512) ?: '';
			if (!str_contains($head, 'SPDX-License-Identifier')) {
				$missingHeader++;
				$this->log('WARN', 'Missing SPDX header: ' . substr($file, strlen($path) + 1));
			}
		}
		$ok = $missingHeader === 0;
		$this->status($ok, "All PHP files have SPDX header ({$missingHeader} missing)");
		$ok ? $passed++ : $failed++;

		// ── No tabs in config files ───────────────────────────────────────
		$this->section('No tab characters in config files');
		$configFiles = array_merge(
			$this->findFiles($path, '*.yml'),
			$this->findFiles($path, '*.yaml'),
			$this->findFiles($path, '*.json')
		);
		$tabFiles = 0;
		foreach ($configFiles as $file) {
			if (str_contains((string) file_get_contents($file), "\t")) {
				$tabFiles++;
				$this->log('WARN', 'Tab found: ' . substr($file, strlen($path) + 1));
			}
		}
		$ok = $tabFiles === 0;
		$this->status($ok, "No tabs in YAML/JSON ({$tabFiles} files affected)");
		$ok ? $passed++ : $failed++;

		// ── Summary ───────────────────────────────────────────────────────
		$this->printSummary($passed, $failed, $this->elapsed());

		return $failed > 0 ? 1 : 0;
	}

	// ── Helpers ───────────────────────────────────────────────────────────

	private function findManifest(string $path): ?string
	{
		// Check root first, then common Joomla locations
		$candidates = array_merge(
			glob($path . '/*.xml') ?: [],
			glob($path . '/administrator/components/com_*/*.xml') ?: []
		);
		foreach ($candidates as $xml) {
			$content = (string) file_get_contents($xml);
			if (str_contains($content, 'type="component"') || str_contains($content, "type='component'")) {
				return $xml;
			}
		}
		return null;
	}

	private function findFiles(string $dir, string $pattern): array
	{
		if (!is_dir($dir)) {
			return [];
		}
		$results = [];
		$iter    = new \RecursiveIteratorIterator(
			new \RecursiveDirectoryIterator($dir, \FilesystemIterator::SKIP_DOTS)
		);
		foreach ($iter as $file) {
			if ($file->isFile() && fnmatch($pattern, $file->getFilename())) {
				$results[] = $file->getPathname();
			}
		}
		return $results;
	}
}

$script = new ValidateJoomlaManifest('validate_manifest', 'Validate a Joomla component XML manifest against MokoStandards requirements');
exit($script->execute());