#!/usr/bin/env php
<?php
/* Copyright (C) 2026 Moko Consulting <hello@mokoconsulting.tech>
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * FILE INFORMATION
 * DEFGROUP: moko-platform.CLI
 * INGROUP: moko-platform
 * REPO: https://git.mokoconsulting.tech/MokoConsulting/moko-platform
 * PATH: /cli/theme_lint.php
 * BRIEF: Lint theme files — CSS syntax, image sizes, hardcoded URLs
 *
 * Usage:
 *   php theme_lint.php --path /repo
 *   php theme_lint.php --path /repo --max-image-kb 500
 *   php theme_lint.php --path /repo --github-output
 *
 * Options:
 *   --path           Repository root (default: .)
 *   --max-image-kb   Maximum image file size in KB (default: 500)
 *   --github-output  Export results to $GITHUB_OUTPUT
 *   --strict         Exit 1 on any warning (default: only on errors)
 */

declare(strict_types=1);

$path = '.';
$maxImageKb = 500;
$ghOutput = false;
$strict = false;

foreach ($argv as $i => $arg) {
	if ($arg === '--path' && isset($argv[$i + 1])) $path = $argv[$i + 1];
	if ($arg === '--max-image-kb' && isset($argv[$i + 1])) $maxImageKb = (int)$argv[$i + 1];
	if ($arg === '--github-output') $ghOutput = true;
	if ($arg === '--strict') $strict = true;
}

$root = realpath($path) ?: $path;
$errors = 0;
$warnings = 0;

// ── Find source directory ───────────────────────────────────────────────
$srcDir = null;
foreach (['src', 'htdocs'] as $d) {
	if (is_dir("{$root}/{$d}")) { $srcDir = "{$root}/{$d}"; break; }
}
if ($srcDir === null) {
	fwrite(STDERR, "No src/ or htdocs/ directory in {$root}\n");
	exit(1);
}

echo "Theme Lint: {$srcDir}\n\n";

// ── Check 1: CSS syntax validation ──────────────────────────────────────
echo "--- CSS Syntax ---\n";
$cssFiles = findFiles($srcDir, '*.css');
$cssMinFiles = findFiles($srcDir, '*.min.css');
$cssToCheck = array_diff($cssFiles, $cssMinFiles);

if (empty($cssToCheck)) {
	echo "  No CSS files to check\n";
} else {
	foreach ($cssToCheck as $file) {
		$content = file_get_contents($file);
		$relPath = str_replace($root . '/', '', $file);

		// Check for unmatched braces
		$openBraces = substr_count($content, '{');
		$closeBraces = substr_count($content, '}');
		if ($openBraces !== $closeBraces) {
			echo "  ERROR: {$relPath}: unmatched braces (open={$openBraces}, close={$closeBraces})\n";
			$errors++;
		}

		// Check for empty rules
		if (preg_match_all('/\{[\s]*\}/', $content, $m)) {
			$count = count($m[0]);
			echo "  WARN:  {$relPath}: {$count} empty rule(s)\n";
			$warnings++;
		}

		// Check for !important abuse (more than 10 in one file)
		$importantCount = substr_count($content, '!important');
		if ($importantCount > 10) {
			echo "  WARN:  {$relPath}: {$importantCount} !important declarations (consider refactoring)\n";
			$warnings++;
		}
	}

	if ($errors === 0) {
		echo "  OK: " . count($cssToCheck) . " CSS file(s) checked\n";
	}
}

// ── Check 2: Image file sizes ───────────────────────────────────────────
echo "\n--- Image Sizes (max {$maxImageKb}KB) ---\n";
$imageExts = ['*.jpg', '*.jpeg', '*.png', '*.gif', '*.webp', '*.svg', '*.bmp'];
$images = [];
foreach ($imageExts as $ext) {
	$images = array_merge($images, findFiles($srcDir, $ext));
}
// Also check root images/ directory
if (is_dir("{$root}/images")) {
	foreach ($imageExts as $ext) {
		$images = array_merge($images, findFiles("{$root}/images", $ext));
	}
}

$oversized = 0;
$totalSize = 0;
foreach ($images as $file) {
	$size = filesize($file);
	$totalSize += $size;
	$relPath = str_replace($root . '/', '', $file);
	$sizeKb = round($size / 1024);

	if ($sizeKb > $maxImageKb) {
		echo "  WARN:  {$relPath}: {$sizeKb}KB (exceeds {$maxImageKb}KB limit)\n";
		$oversized++;
		$warnings++;
	}
}

$totalMb = round($totalSize / 1024 / 1024, 1);
echo "  " . count($images) . " image(s), {$totalMb}MB total";
if ($oversized > 0) {
	echo ", {$oversized} oversized";
}
echo "\n";

// ── Check 3: Hardcoded URLs in CSS/JS ───────────────────────────────────
echo "\n--- Hardcoded URLs ---\n";
$codeFiles = array_merge(
	findFiles($srcDir, '*.css'),
	findFiles($srcDir, '*.js')
);
// Exclude minified files
$codeFiles = array_filter($codeFiles, function($f) {
	return !preg_match('/\.min\.(css|js)$/', $f);
});

$urlPatterns = [
	'/https?:\/\/clarksvillefurs\.com/' => 'hardcoded production URL',
	'/https?:\/\/[a-z]+\.dev\.mokoconsulting\.tech/' => 'hardcoded dev URL',
	'/https?:\/\/localhost/' => 'localhost reference',
];

$urlIssues = 0;
foreach ($codeFiles as $file) {
	$content = file_get_contents($file);
	$relPath = str_replace($root . '/', '', $file);

	foreach ($urlPatterns as $pattern => $desc) {
		if (preg_match_all($pattern, $content, $matches)) {
			$count = count($matches[0]);
			echo "  WARN:  {$relPath}: {$count} {$desc}\n";
			$urlIssues++;
			$warnings++;
		}
	}
}

if ($urlIssues === 0) {
	echo "  OK: No hardcoded URLs found\n";
}

// ── Summary ─────────────────────────────────────────────────────────────
echo "\n=== Summary ===\n";
echo "Errors:   {$errors}\n";
echo "Warnings: {$warnings}\n";

if ($ghOutput) {
	$ghFile = getenv('GITHUB_OUTPUT');
	if ($ghFile) {
		file_put_contents($ghFile, "lint_errors={$errors}\n", FILE_APPEND);
		file_put_contents($ghFile, "lint_warnings={$warnings}\n", FILE_APPEND);
		file_put_contents($ghFile, "lint_images=" . count($images) . "\n", FILE_APPEND);
		file_put_contents($ghFile, "lint_css=" . count($cssToCheck) . "\n", FILE_APPEND);
	}
}

if ($errors > 0) {
	exit(1);
}
if ($strict && $warnings > 0) {
	exit(1);
}
exit(0);

// ── Helper: recursively find files matching a glob pattern ──────────────
function findFiles(string $dir, string $pattern): array
{
	$results = [];
	if (!is_dir($dir)) return $results;

	$iterator = new RecursiveIteratorIterator(
		new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS)
	);

	foreach ($iterator as $file) {
		if (fnmatch($pattern, $file->getFilename())) {
			$results[] = $file->getPathname();
		}
	}

	return $results;
}