chore: move js cache to file

emhttp/plugins/dynamix/include/JSCache.php

@@ -0,0 +1,53 @@
+<?php
+// Function to recursively find JS files in a directory
+function findJsFiles($directory) {
+  if (!is_dir($directory)) {
+    return [];
+  }
+  
+  $jsFiles = [];
+  $iterator = new RecursiveIteratorIterator(
+    new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS)
+  );
+  
+  foreach ($iterator as $file) {
+    if ($file->isFile() && $file->getExtension() === 'js') {
+      $path = $file->getPathname();
+      $baseDir = '/usr/local/emhttp';
+      if (strpos($path, $baseDir) === 0) {
+        $path = substr($path, strlen($baseDir));
+      }
+      $jsFiles[] = $path;
+    }
+  }
+  
+  return $jsFiles;
+}
+
+// Function to get JS files with caching
+function getCachedJSFiles($directory) {
+  $cacheFile = '/tmp/js_files_cache.php';
+  $cacheLifetime = 300; // Cache lifetime in seconds (5 minutes)
+
+  // Check if cache exists and is still valid
+  $useCache = false;
+  if (file_exists($cacheFile)) {
+    $cacheTime = filemtime($cacheFile);
+    if (time() - $cacheTime < $cacheLifetime) {
+      $useCache = true;
+    }
+  }
+
+  if ($useCache) {
+    // Use cached JS files list
+    return include $cacheFile;
+  } else {
+    // Generate new JS files list
+    $jsFiles = findJsFiles($directory);
+    
+    // Store in cache file
+    file_put_contents($cacheFile, '<?php return ' . var_export($jsFiles, true) . ';');
+    
+    return $jsFiles;
+  }
+}