initial switch commit

php/get_state.php

@@ -0,0 +1,45 @@
+<?php
+header('Content-Type: text/plain');
+
+// Only allow GET requests
+if ($_SERVER['REQUEST_METHOD'] !== 'GET') {
+    http_response_code(405);
+    die('Method not allowed');
+}
+
+$file_path = '../server_state.txt';
+
+// Check if file exists
+if (!file_exists($file_path)) {
+    // Return default state if file doesn't exist
+    echo '0';
+    exit;
+}
+
+// Check if file is readable
+if (!is_readable($file_path)) {
+    http_response_code(500);
+    die('Cannot read state file');
+}
+
+$state = file_get_contents($file_path);
+
+// Validate the stored state
+if ($state === false) {
+    http_response_code(500);
+    die('Failed to read state');
+}
+
+// Clean the state (remove any whitespace)
+$state = trim($state);
+
+// Validate what we read from the file
+if (!in_array($state, ['0', '1'], true)) {
+    // File was corrupted somehow, reset to default
+    file_put_contents($file_path, '0', LOCK_EX);
+    echo '0';
+    exit;
+}
+
+echo $state;
+?>