#!/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_client_theme.php
 * BRIEF: Validates client WaaS theme packages (Joomla type="file")
 */

declare(strict_types=1);

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

use MokoEnterprise\CliFramework;

/**
 * Validates client theme packages that deliver CSS, JS, and images
 * to the MokoOnyx template via Joomla's file package installer.
 *
 * Checks:
 *   - Manifest structure (src/templateDetails.xml)
 *   - Required elements: name, element, version, updateservers, scriptfile, fileset
 *   - Extension type is "file" with method="upgrade"
 *   - Version format (XX.YY.ZZ)
 *   - Required theme files (light.custom.css, dark.custom.css)
 *   - PHP syntax of script.php
 *   - CSS brace balance
 *   - updates.xml at repo root
 *   - Image size warnings
 */
class CheckClientTheme extends CliFramework
{
    /** Required XML elements in the manifest. */
    private const REQUIRED_ELEMENTS = ['name', 'element', 'version'];

    /** Recommended XML elements. */
    private const RECOMMENDED_ELEMENTS = ['updateservers', 'scriptfile', 'description', 'fileset'];

    /** Required theme CSS files relative to repo root. */
    private const REQUIRED_THEME_FILES = [
        'src/media/templates/site/mokoonyx/css/theme/light.custom.css',
        'src/media/templates/site/mokoonyx/css/theme/dark.custom.css',
    ];

    /** Optional but expected files. */
    private const EXPECTED_FILES = [
        'src/media/templates/site/mokoonyx/css/user.css',
        'src/media/templates/site/mokoonyx/js/user.js',
        'src/script.php',
        'updates.xml',
    ];

    /** Maximum image size before warning (1 MB). */
    private const IMAGE_WARN_SIZE = 1048576;

    /**
     * Configure available arguments.
     */
    protected function configure(): void
    {
        $this->setDescription('Validates client WaaS theme packages (type="file")');
        $this->addArgument('--path', 'Repository path to check', '.');
    }

    /**
     * Run all validation checks.
     */
    protected function run(): int
    {
        $path   = rtrim($this->getArgument('--path'), '/');
        $errors = 0;
        $warns  = 0;

        // ── Manifest ──────────────────────────────────────────
        $this->section('Manifest validation');
        $manifest = $path . '/src/templateDetails.xml';

        if (!is_file($manifest)) {
            $this->status(false, 'Missing src/templateDetails.xml');
            $this->printSummary(0, 1, $this->elapsed());
            return 1;
        }

        $content = (string) file_get_contents($manifest);

        // Extension type
        if (preg_match('/type="([^"]*)"/', $content, $m)) {
            if ($m[1] !== 'file') {
                $this->status(false, "Extension type is '{$m[1]}', expected 'file'");
                $errors++;
            } else {
                $this->status(true, 'Extension type: file');
            }
        } else {
            $this->status(false, 'No type attribute on <extension>');
            $errors++;
        }

        // method="upgrade"
        if (str_contains($content, 'method="upgrade"')) {
            $this->status(true, 'method="upgrade" present');
        } else {
            $this->warning('Missing method="upgrade" — updates may fail');
            $warns++;
        }

        // Required elements
        foreach (self::REQUIRED_ELEMENTS as $el) {
            if (str_contains($content, "<{$el}>")) {
                $this->status(true, "<{$el}> present");
            } else {
                $this->status(false, "Missing <{$el}>");
                $errors++;
            }
        }

        // Recommended elements
        foreach (self::RECOMMENDED_ELEMENTS as $el) {
            if (!str_contains($content, "<{$el}>") && !str_contains($content, "<{$el} ")) {
                $this->warning("Missing <{$el}>");
                $warns++;
            }
        }

        // Version format
        if (preg_match('/<version>([^<]+)<\/version>/', $content, $m)) {
            $version = $m[1];
            if (preg_match('/^\d{2}\.\d{2}\.\d{2}$/', $version)) {
                $this->status(true, "Version: {$version}");
            } else {
                $this->status(false, "Version '{$version}' does not match XX.YY.ZZ format");
                $errors++;
            }
        }

        // ── Required files ────────────────────────────────────
        $this->section('Required files');
        foreach (self::REQUIRED_THEME_FILES as $file) {
            $full = $path . '/' . $file;
            if (is_file($full)) {
                $this->status(true, basename($file));
            } else {
                $this->status(false, "Missing: {$file}");
                $errors++;
            }
        }

        foreach (self::EXPECTED_FILES as $file) {
            $full = $path . '/' . $file;
            if (is_file($full)) {
                $this->status(true, basename($file));
            } else {
                $this->warning("Missing: {$file}");
                $warns++;
            }
        }

        // ── PHP syntax ────────────────────────────────────────
        $this->section('PHP syntax');
        $phpFiles = glob($path . '/src/*.php') ?: [];
        foreach ($phpFiles as $phpFile) {
            $output = [];
            $ret    = 0;
            $escaped = escapeshellarg($phpFile);
            exec("php -l {$escaped} 2>&1", $output, $ret);
            if ($ret !== 0) {
                $this->status(false, 'Syntax error: ' . basename($phpFile));
                $errors++;
            } else {
                $this->status(true, basename($phpFile));
            }
        }
        if (empty($phpFiles)) {
            $this->warning('No PHP files in src/');
        }

        // ── CSS validation ────────────────────────────────────
        $this->section('CSS validation');
        $cssFiles = array_merge(
            glob($path . '/src/media/templates/site/mokoonyx/css/theme/*.css') ?: [],
            glob($path . '/src/media/templates/site/mokoonyx/css/*.css') ?: [],
        );
        foreach ($cssFiles as $cssFile) {
            $css   = (string) file_get_contents($cssFile);
            $open  = substr_count($css, '{');
            $close = substr_count($css, '}');
            $name  = str_replace($path . '/src/', '', $cssFile);

            if ($open !== $close) {
                $this->status(false, "Unbalanced braces in {$name} (open: {$open}, close: {$close})");
                $errors++;
            } else {
                $this->status(true, "{$name} ({$open} rules)");
            }

            // BOM check
            if (str_starts_with($css, "\xEF\xBB\xBF")) {
                $this->status(false, "BOM detected in {$name}");
                $errors++;
            }
        }

        // ── Version consistency ───────────────────────────────
        $this->section('Version consistency');
        $manifestVer = '';
        if (preg_match('/<version>([^<]+)<\/version>/', $content, $m)) {
            $manifestVer = $m[1];
        }

        $updatesFile = $path . '/updates.xml';
        if (is_file($updatesFile)) {
            $updatesContent = (string) file_get_contents($updatesFile);
            if (preg_match('/<version>([^<]+)<\/version>/', $updatesContent, $m)) {
                if ($m[1] !== $manifestVer) {
                    $this->warning("Version drift: manifest={$manifestVer}, updates.xml={$m[1]}");
                    $warns++;
                } else {
                    $this->status(true, "Versions match: {$manifestVer}");
                }
            }
        }

        if (is_file($path . '/CHANGELOG.md')) {
            $cl = (string) file_get_contents($path . '/CHANGELOG.md');
            if (!str_contains($cl, "[{$manifestVer}]")) {
                $this->warning("Version {$manifestVer} not in CHANGELOG.md");
                $warns++;
            } else {
                $this->status(true, "CHANGELOG has [{$manifestVer}]");
            }
        }

        // ── Image sizes ───────────────────────────────────────
        $this->section('Image optimization');
        $largeImages = 0;
        $imageDir    = $path . '/src/images';
        if (is_dir($imageDir)) {
            $iter = new \RecursiveIteratorIterator(
                new \RecursiveDirectoryIterator($imageDir, \FilesystemIterator::SKIP_DOTS)
            );
            foreach ($iter as $file) {
                if (!$file->isFile()) {
                    continue;
                }
                $ext = strtolower($file->getExtension());
                if (!in_array($ext, ['png', 'jpg', 'jpeg', 'gif', 'webp', 'svg'])) {
                    continue;
                }
                if ($file->getSize() > self::IMAGE_WARN_SIZE) {
                    $kb = (int) ($file->getSize() / 1024);
                    $this->warning("{$kb}KB: " . str_replace($path . '/', '', $file->getPathname()));
                    $largeImages++;
                }
            }
        }
        if ($largeImages > 0) {
            $this->warning("{$largeImages} image(s) over 1MB — consider optimizing");
        } else {
            $this->status(true, 'All images under 1MB');
        }

        // ── Summary ───────────────────────────────────────────
        $passed = ($errors === 0) ? 1 : 0;
        $this->printSummary($passed, $errors, $this->elapsed());

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

$script = new CheckClientTheme('check_client_theme', 'Validates client WaaS theme packages');
exit($script->execute());