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

/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: mokoplatform.CLI
 * INGROUP: mokoplatform
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/mokoplatform
 * PATH: /cli/joomla_metadata_validate.php
 * VERSION: 09.33.00
 * BRIEF: Validate MokoGitea repo metadata against Joomla extension manifest XML
 */

declare(strict_types=1);

require_once __DIR__ . '/../lib/Enterprise/CliFramework.php';

use MokoCli\CliFramework;

class JoomlaMetadataValidateCli extends CliFramework
{
    /** Joomla element prefix map — must match MokoGitea's cleanJoomlaElement() */
    private const JOOMLA_PREFIX = [
        'package'   => 'pkg_',
        'component' => 'com_',
        'module'    => 'mod_',
        'template'  => 'tpl_',
        'library'   => 'lib_',
        'file'      => 'file_',
    ];

    protected function configure(): void
    {
        $this->setDescription('Validate MokoGitea repo metadata against Joomla extension manifest XML');
        $this->addArgument('--path', 'Repo root path (default: current directory)', '.');
        $this->addArgument('--token', 'Gitea API token (or GITEA_TOKEN env)', '');
        $this->addArgument('--org', 'Gitea org', 'MokoConsulting');
        $this->addArgument('--repo', 'Repo name (auto-detected from git if empty)', '');
        $this->addArgument('--api-base', 'Gitea API base URL', 'https://git.mokoconsulting.tech/api/v1');
        $this->addArgument('--ci', 'CI mode: exit 1 on any error', false);
        $this->addArgument('--json', 'Output as JSON', false);
    }

    protected function run(): int
    {
        $path     = realpath($this->getArgument('--path')) ?: $this->getArgument('--path');
        $token    = $this->getArgument('--token') ?: getenv('GITEA_TOKEN') ?: '';
        $org      = $this->getArgument('--org');
        $repoName = $this->getArgument('--repo');
        $apiBase  = rtrim($this->getArgument('--api-base'), '/');
        $ciMode   = (bool) $this->getArgument('--ci');
        $jsonMode = (bool) $this->getArgument('--json');

        if (!is_dir($path)) {
            $this->log('ERROR', "Path does not exist: {$path}");
            return 1;
        }

        if ($repoName === '') {
            $repoName = $this->detectRepoName($path);
        }

        // ── Step 1: Find the Joomla extension manifest XML ──────────
        $joomlaXml = $this->findJoomlaManifest($path);

        if ($joomlaXml === null) {
            $this->log('ERROR', 'No Joomla extension manifest XML found');
            return 1;
        }

        $this->log('INFO', "Joomla manifest: {$joomlaXml['path']}");

        // ── Step 2: Load MokoGitea metadata ─────────────────────────
        $metadata = $this->loadMetadata($path, $org, $repoName, $token, $apiBase);

        if ($metadata === null) {
            $this->log('ERROR', 'Could not load MokoGitea metadata');
            return 1;
        }

        // ── Step 3: Compare ─────────────────────────────────────────
        $results = $this->compare($metadata, $joomlaXml, $path);

        // ── Step 4: Output ──────────────────────────────────────────
        if ($jsonMode) {
            echo json_encode([
                'repo'    => $repoName,
                'results' => $results,
            ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
        } else {
            $this->printResults($repoName, $results);
        }

        $errors = count(array_filter($results, fn($r) => $r['status'] === 'error'));

        return ($ciMode && $errors > 0) ? 1 : 0;
    }

    // =================================================================
    // Find Joomla manifest XML
    // =================================================================

    private function findJoomlaManifest(string $root): ?array
    {
        // Search common locations for a Joomla extension manifest
        $candidates = [];

        // Package manifest: source/pkg_*.xml
        foreach (glob("{$root}/source/pkg_*.xml") as $file) {
            $candidates[] = $file;
        }

        // Component manifest: source/packages/com_*/[name].xml
        foreach (glob("{$root}/source/packages/com_*/*.xml") as $file) {
            $basename = basename($file);
            // Skip access.xml, config.xml, etc.
            if (in_array($basename, ['access.xml', 'config.xml'], true)) {
                continue;
            }
            $candidates[] = $file;
        }

        // Direct source/*.xml
        foreach (glob("{$root}/source/*.xml") as $file) {
            if (basename($file) !== 'pkg_mokosuitebackup.xml') {
                // Already caught above
            }
            $candidates[] = $file;
        }

        // src/ fallback
        foreach (glob("{$root}/src/pkg_*.xml") as $file) {
            $candidates[] = $file;
        }

        // Find the first one that has <extension type="...">
        foreach (array_unique($candidates) as $file) {
            $content = file_get_contents($file);
            if ($content === false) {
                continue;
            }

            if (preg_match('/<extension\s[^>]*type=["\']([^"\']+)["\']/', $content, $typeMatch)) {
                $xml = @simplexml_load_string($content);
                if ($xml === false) {
                    $relPath = str_replace($root . '/', '', $file);
                    $relPath = str_replace($root . '\\', '', $relPath);
                    $this->log('WARN', "Skipping {$relPath}: malformed XML");
                    continue;
                }

                $type = strtolower($typeMatch[1]);
                $relPath = str_replace($root . '/', '', $file);
                $relPath = str_replace($root . '\\', '', $relPath);

                return [
                    'path' => $relPath,
                    'type' => $type,
                    'xml'  => $xml,
                ];
            }
        }

        return null;
    }

    // =================================================================
    // Load metadata (from API)
    // =================================================================

    private function loadMetadata(string $root, string $org, string $repoName, string $token, string $apiBase): ?array
    {
        if ($token === '') {
            $this->log('ERROR', 'No API token provided (use --token or set GITEA_TOKEN env var)');
            return null;
        }

        $url = "{$apiBase}/repos/{$org}/{$repoName}/metadata";
        $ctx = stream_context_create([
            'http' => [
                'header'        => "Authorization: token {$token}\r\nAccept: application/json\r\n",
                'timeout'       => 10,
                'ignore_errors' => true,
            ],
        ]);

        $body = file_get_contents($url, false, $ctx);

        // Extract HTTP status from response headers
        $httpCode = 0;
        if (isset($http_response_header[0]) && preg_match('/\d{3}/', $http_response_header[0], $m)) {
            $httpCode = (int) $m[0];
        }

        if ($body === false) {
            $this->log('ERROR', "Failed to connect to {$url} — check network or TLS configuration");
            return null;
        }

        if ($httpCode === 404) {
            $this->log('ERROR', "API endpoint not found: {$url}");
            $this->log('ERROR', 'Server may need MokoGitea-Fork >= #650 (metadata endpoint rename)');
            return null;
        }

        if ($httpCode === 401 || $httpCode === 403) {
            $this->log('ERROR', "Authentication failed (HTTP {$httpCode}) — check your API token");
            return null;
        }

        if ($httpCode >= 400) {
            $this->log('ERROR', "API returned HTTP {$httpCode}: " . substr($body, 0, 200));
            return null;
        }

        $data = json_decode($body, true);
        if (!is_array($data)) {
            $this->log('ERROR', "API returned invalid JSON from {$url}");
            return null;
        }

        $data['source'] = 'api';
        return $data;
    }

    // =================================================================
    // Compare metadata against Joomla manifest
    // =================================================================

    private function compare(array $metadata, array $joomlaXml, string $root): array
    {
        $results = [];
        $xml     = $joomlaXml['xml'];
        $type    = $joomlaXml['type'];

        // 1. Extension type
        $metaType = $this->normalizeExtensionType(
            $metadata['extension_type'] ?? $metadata['package_type'] ?? ''
        );
        $results[] = [
            'field'    => 'extension_type',
            'metadata' => $metaType,
            'joomla'   => $type,
            'status'   => ($metaType === $type) ? 'ok' : 'error',
            'message'  => ($metaType === $type)
                ? "matches <extension type=\"{$type}\">"
                : "metadata has \"{$metaType}\" but Joomla manifest has \"{$type}\"",
        ];

        // 2. Element name
        $metaName    = strtolower($metadata['name'] ?? '');
        $metaElement = $this->deriveElement($metaType, $metaName);
        $joomlaElement = $this->extractJoomlaElement($xml, $type);

        $elementMatch = ($metaElement === $joomlaElement);
        $results[] = [
            'field'    => 'element',
            'metadata' => $metaElement,
            'joomla'   => $joomlaElement,
            'status'   => $elementMatch ? 'ok' : 'error',
            'message'  => $elementMatch
                ? "derived correctly"
                : "metadata derives \"{$metaElement}\" but Joomla uses \"{$joomlaElement}\"",
        ];

        // 3. Version
        $metaVersion  = $metadata['version'] ?? '';
        $joomlaVersion = (string) ($xml->version ?? '');

        if ($metaVersion !== '' && $joomlaVersion !== '') {
            // Strip dev/rc suffixes for comparison (CI bumps these)
            $metaBase   = preg_replace('/-(dev|rc|alpha|beta)\d*$/', '', $metaVersion);
            $joomlaBase = preg_replace('/-(dev|rc|alpha|beta)\d*$/', '', $joomlaVersion);
            $versionMatch = ($metaBase === $joomlaBase);

            $results[] = [
                'field'    => 'version',
                'metadata' => $metaVersion,
                'joomla'   => $joomlaVersion,
                'status'   => $versionMatch ? 'ok' : 'warn',
                'message'  => $versionMatch
                    ? 'matches (base version)'
                    : "metadata has \"{$metaVersion}\" but Joomla has \"{$joomlaVersion}\"",
            ];
        }

        // 4. PHP minimum (from composer.json)
        $composerPhp = $this->readComposerPhpRequirement($root);
        $metaPhp     = $metadata['php_minimum'] ?? '';

        if ($composerPhp !== '' && $metaPhp !== '') {
            $phpMatch = ($metaPhp === $composerPhp);
            $results[] = [
                'field'    => 'php_minimum',
                'metadata' => $metaPhp,
                'joomla'   => $composerPhp . ' (composer.json)',
                'status'   => $phpMatch ? 'ok' : 'warn',
                'message'  => $phpMatch
                    ? 'matches composer.json'
                    : "metadata has \"{$metaPhp}\" but composer.json requires \"{$composerPhp}\"",
            ];
        }

        // 5. Description
        $metaDesc   = $metadata['description'] ?? '';
        $joomlaDesc = (string) ($xml->description ?? '');

        // Joomla descriptions are often language keys, skip those
        if ($metaDesc !== '' && $joomlaDesc !== '' && !str_starts_with($joomlaDesc, 'COM_') && !str_starts_with($joomlaDesc, 'PKG_')) {
            $descMatch = ($metaDesc === $joomlaDesc);
            $results[] = [
                'field'    => 'description',
                'metadata' => substr($metaDesc, 0, 60) . (strlen($metaDesc) > 60 ? '...' : ''),
                'joomla'   => substr($joomlaDesc, 0, 60) . (strlen($joomlaDesc) > 60 ? '...' : ''),
                'status'   => $descMatch ? 'ok' : 'info',
                'message'  => $descMatch ? 'matches' : 'descriptions differ (informational)',
            ];
        }

        return $results;
    }

    // =================================================================
    // Helpers
    // =================================================================

    /**
     * Normalize extension_type — map MokoGitea types to Joomla types.
     */
    private function normalizeExtensionType(string $type): string
    {
        return match (strtolower($type)) {
            'joomla-extension' => 'package', // legacy mapping
            default => strtolower($type),
        };
    }

    /**
     * Derive the Joomla element name from type + name.
     * Replicates MokoGitea's cleanJoomlaElement() + prefix logic.
     */
    private function deriveElement(string $type, string $name): string
    {
        // Clean: lowercase, strip non-alphanumeric except . _ -
        $clean = strtolower($name);
        $clean = preg_replace('/[^a-z0-9._-]/', '', $clean);

        $prefix = self::JOOMLA_PREFIX[$type] ?? '';

        return $prefix . $clean;
    }

    /**
     * Extract the element name from a Joomla manifest XML.
     * Follows the same logic as Joomla's InstallerAdapter::getElement().
     */
    private function extractJoomlaElement(\SimpleXMLElement $xml, string $type): string
    {
        switch ($type) {
            case 'package':
                $packagename = (string) ($xml->packagename ?? '');
                if ($packagename !== '') {
                    return 'pkg_' . strtolower(preg_replace('/[^a-zA-Z0-9._-]/', '', $packagename));
                }
                break;

            case 'component':
                $element = (string) ($xml->element ?? '');
                if ($element !== '') {
                    $element = strtolower($element);
                    return str_starts_with($element, 'com_') ? $element : 'com_' . $element;
                }
                $name = (string) ($xml->name ?? '');
                $name = strtolower(preg_replace('/[^a-zA-Z0-9._-]/', '', $name));
                return str_starts_with($name, 'com_') ? $name : 'com_' . $name;

            case 'module':
                $element = (string) ($xml->element ?? '');
                if ($element !== '') {
                    return strtolower($element);
                }
                break;

            case 'plugin':
                // Plugins derive element from the file attribute
                if (isset($xml->files)) {
                    foreach ($xml->files->children() as $file) {
                        $plugin = (string) ($file->attributes()->plugin ?? '');
                        if ($plugin !== '') {
                            return strtolower($plugin);
                        }
                    }
                }
                break;

            case 'library':
                $libname = (string) ($xml->libraryname ?? '');
                if ($libname !== '') {
                    return strtolower($libname);
                }
                break;
        }

        // Fallback: use <name> tag
        $name = (string) ($xml->name ?? '');
        return strtolower(preg_replace('/[^a-zA-Z0-9._-]/', '', $name));
    }

    /**
     * Read PHP version requirement from composer.json.
     */
    private function readComposerPhpRequirement(string $root): string
    {
        $composerFile = "{$root}/composer.json";

        if (!is_file($composerFile)) {
            return '';
        }

        $data = json_decode(file_get_contents($composerFile), true);

        if (!is_array($data)) {
            return '';
        }

        $phpReq = $data['require']['php'] ?? '';

        // Extract version number from constraint like ">=8.1"
        if (preg_match('/(\d+\.\d+)/', $phpReq, $m)) {
            return $m[1];
        }

        return '';
    }

    private function detectRepoName(string $root): string
    {
        $gitConfig = "{$root}/.git/config";

        if (!file_exists($gitConfig)) {
            return basename($root);
        }

        $content = file_get_contents($gitConfig);

        if (preg_match('/url\s*=\s*.*\/([^\/\s]+?)(?:\.git)?\s*$/m', $content, $m)) {
            return $m[1];
        }

        return basename($root);
    }

    // =================================================================
    // Output
    // =================================================================

    private function printResults(string $repoName, array $results): void
    {
        $errors = count(array_filter($results, fn($r) => $r['status'] === 'error'));
        $warns  = count(array_filter($results, fn($r) => $r['status'] === 'warn'));
        $oks    = count(array_filter($results, fn($r) => $r['status'] === 'ok'));

        $this->log('INFO', "Validating {$repoName} Joomla metadata...\n");

        foreach ($results as $r) {
            $icon = match ($r['status']) {
                'ok'    => "\xE2\x9C\x93", // ✓
                'error' => "\xE2\x9C\x97", // ✗
                'warn'  => "\xE2\x9A\xA0", // ⚠
                default => "\xE2\x84\xB9", // ℹ
            };

            $line = sprintf(
                "  %s %-16s %s",
                $icon,
                $r['field'],
                $r['message']
            );

            $this->log(
                match ($r['status']) {
                    'error' => 'ERROR',
                    'warn'  => 'WARN',
                    'ok'    => 'OK',
                    default => 'INFO',
                },
                $line
            );
        }

        echo "\n";

        if ($errors > 0) {
            $this->log('ERROR', "{$errors} error(s) — update delivery will fail");
        } elseif ($warns > 0) {
            $this->log('WARN', "All critical checks passed, {$warns} warning(s)");
        } else {
            $this->log('OK', "All {$oks} checks passed");
        }
    }
}

$app = new JoomlaMetadataValidateCli();
exit($app->execute());