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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Route cache manager |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-01-18 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Routing; |
| 21 | |
| 22 | use Symfony\Component\Routing\Route; |
| 23 | use Symfony\Component\Routing\RouteCollection; |
| 24 | |
| 25 | /** |
| 26 | * Class RouteCacheManager |
| 27 | * |
| 28 | * Manages route caching for improved performance in production. |
| 29 | * Caches compiled RouteCollection to a PHP file and handles cache invalidation. |
| 30 | */ |
| 31 | class RouteCacheManager |
| 32 | { |
| 33 | private string $cacheDir; |
| 34 | private bool $debug; |
| 35 | |
| 36 | public function __construct(string $cacheDir, bool $debug = false) |
| 37 | { |
| 38 | $this->cacheDir = rtrim(string: $cacheDir, characters: '/'); |
| 39 | $this->debug = $debug; |
| 40 | |
| 41 | // Create a cache directory if it doesn't exist |
| 42 | if (!is_dir($this->cacheDir)) { |
| 43 | mkdir(directory: $this->cacheDir, permissions: 0o755, recursive: true); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Get routes, either from cache or by loading them. |
| 49 | * |
| 50 | * @param string $context The routing context |
| 51 | * @param callable $loader Callback that loads the routes |
| 52 | * @return RouteCollection The route collection |
| 53 | */ |
| 54 | public function getRoutes(string $context, callable $loader): RouteCollection |
| 55 | { |
| 56 | $cacheFile = $this->getCacheFile($context); |
| 57 | |
| 58 | // In debug mode always reload; otherwise use the cache when it holds |
| 59 | // a valid collection - a corrupted cache file falls through to reload. |
| 60 | if (!$this->debug && file_exists($cacheFile)) { |
| 61 | $cachedRoutes = $this->readCache($cacheFile); |
| 62 | if ($cachedRoutes instanceof RouteCollection) { |
| 63 | return $cachedRoutes; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | $routes = $loader(); |
| 68 | if (!$routes instanceof RouteCollection) { |
| 69 | throw new \RuntimeException(sprintf( |
| 70 | 'Route loader for context "%s" did not return a RouteCollection.', |
| 71 | $context, |
| 72 | )); |
| 73 | } |
| 74 | |
| 75 | // Only write cache in production mode |
| 76 | if (!$this->debug) { |
| 77 | $this->writeCache($cacheFile, $routes); |
| 78 | } |
| 79 | |
| 80 | return $routes; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Clear all route caches. |
| 85 | */ |
| 86 | public function clear(): void |
| 87 | { |
| 88 | $pattern = $this->cacheDir . '/routes_*.php'; |
| 89 | $cacheFiles = glob($pattern); |
| 90 | |
| 91 | if ($cacheFiles !== false) { |
| 92 | foreach ($cacheFiles as $file) { |
| 93 | if (!file_exists($file)) { |
| 94 | continue; |
| 95 | } |
| 96 | |
| 97 | unlink($file); |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Clear cache for a specific context. |
| 104 | * |
| 105 | * @param string $context The routing context |
| 106 | */ |
| 107 | public function clearContext(string $context): void |
| 108 | { |
| 109 | $cacheFile = $this->getCacheFile($context); |
| 110 | |
| 111 | if (file_exists($cacheFile)) { |
| 112 | unlink($cacheFile); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Check if a cache exists for a context. |
| 118 | * |
| 119 | * @param string $context The routing context |
| 120 | * @return bool True if a cache exists |
| 121 | */ |
| 122 | public function hasCache(string $context): bool |
| 123 | { |
| 124 | return file_exists($this->getCacheFile($context)); |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Get the cache file path for a context. |
| 129 | * |
| 130 | * @param string $context The routing context |
| 131 | * @return string The cache file path |
| 132 | */ |
| 133 | private function getCacheFile(string $context): string |
| 134 | { |
| 135 | return $this->cacheDir . '/routes_' . $context . '.php'; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Write a route collection to a cache file. |
| 140 | * |
| 141 | * @param string $cacheFile The cache file path |
| 142 | * @param RouteCollection $routes The routes to cache |
| 143 | */ |
| 144 | private function writeCache(string $cacheFile, RouteCollection $routes): void |
| 145 | { |
| 146 | $content = '<?php' . PHP_EOL . PHP_EOL; |
| 147 | $content .= '//' . PHP_EOL; |
| 148 | $content .= '// This file is auto-generated by phpMyFAQ RouteCacheManager' . PHP_EOL; |
| 149 | $content .= '// Do not edit this file manually' . PHP_EOL . PHP_EOL; |
| 150 | $content .= '//' . PHP_EOL; |
| 151 | $content .= 'use Symfony\Component\Routing\Route;' . PHP_EOL; |
| 152 | $content .= 'use Symfony\Component\Routing\RouteCollection;' . PHP_EOL . PHP_EOL; |
| 153 | $content .= '$routes = new RouteCollection();' . PHP_EOL . PHP_EOL; |
| 154 | |
| 155 | foreach ($routes as $name => $route) { |
| 156 | $content .= $this->generateRouteCode($name, $route); |
| 157 | } |
| 158 | |
| 159 | $content .= PHP_EOL . 'return $routes;' . PHP_EOL; |
| 160 | |
| 161 | file_put_contents($cacheFile, $content); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Generate PHP code for a single route. |
| 166 | * |
| 167 | * @param string $name The route name |
| 168 | * @param Route $route The route |
| 169 | * @return string The generated PHP code |
| 170 | */ |
| 171 | private function generateRouteCode(string $name, Route $route): string |
| 172 | { |
| 173 | $path = var_export(value: $route->getPath(), return: true); |
| 174 | $defaults = var_export(value: $route->getDefaults(), return: true); |
| 175 | $requirements = var_export(value: $route->getRequirements(), return: true); |
| 176 | $options = var_export(value: $route->getOptions(), return: true); |
| 177 | $host = var_export(value: $route->getHost(), return: true); |
| 178 | $schemes = var_export(value: $route->getSchemes(), return: true); |
| 179 | $methods = var_export(value: $route->getMethods(), return: true); |
| 180 | $condition = var_export(value: $route->getCondition(), return: true); |
| 181 | |
| 182 | $code = '$routes->add(' . var_export(value: $name, return: true) . ', new Route(' . PHP_EOL; |
| 183 | $code .= ' path: ' . $path . ',' . PHP_EOL; |
| 184 | $code .= ' defaults: ' . $defaults . ',' . PHP_EOL; |
| 185 | $code .= ' requirements: ' . $requirements . ',' . PHP_EOL; |
| 186 | $code .= ' options: ' . $options . ',' . PHP_EOL; |
| 187 | $code .= ' host: ' . $host . ',' . PHP_EOL; |
| 188 | $code .= ' schemes: ' . $schemes . ',' . PHP_EOL; |
| 189 | $code .= ' methods: ' . $methods . ',' . PHP_EOL; |
| 190 | $code .= ' condition: ' . $condition . PHP_EOL; |
| 191 | $code .= '));' . PHP_EOL . PHP_EOL; |
| 192 | |
| 193 | return $code; |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * Read route collection from a cache file. |
| 198 | * |
| 199 | * @param string $cacheFile The cache file path |
| 200 | * @return RouteCollection|null The cached routes, or null if the file is corrupted |
| 201 | */ |
| 202 | private function readCache(string $cacheFile): ?RouteCollection |
| 203 | { |
| 204 | $routes = include $cacheFile; |
| 205 | |
| 206 | return $routes instanceof RouteCollection ? $routes : null; |
| 207 | } |
| 208 | } |