First version, for githup; UNSTABLE, DO NOT USE!

www/intern/scripts/displaycontrol/ajax-update_display_config_json.php

@@ -0,0 +1,68 @@
+<?php
+header('Content-Type: application/json');
+
+if (!isset($baseDir)) {
+	$baseDir = $_SERVER['DOCUMENT_ROOT'];
+}
+// ---------- Get and sanitize input ----------
+$type = isset($_GET['type']) ? preg_replace('/[^a-zA-Z0-9 _-]/', '', $_GET['type']) : '';
+
+$allowed_types = ['logo','scoring','ctext'];
+if (!in_array($type, $allowed_types)) {
+    echo json_encode(['success' => false, 'message' => 'Invalid type']);
+    exit;
+}
+
+if ($type === 'ctext'){
+	$ctext = isset($_GET['ctext']) ? $_GET['ctext'] : '';
+}
+
+$folder = realpath($baseDir.'/displays/json');
+if ($folder === false) {
+    echo json_encode([
+        'success' => false,
+        'message' => 'Could not find displays folder.'
+    ]);
+    exit;
+}
+
+$filename = 'config.json';
+$filepath = $folder . '/' . $filename;
+
+if (!is_writable($folder)) {
+    echo json_encode(['success' => false, 'message' => 'Folder not writable: ' . $folder]);
+    exit;
+}
+
+
+$jsonString = file_get_contents($filepath);
+
+// decode JSON, fallback to empty array if invalid
+$oldjson = json_decode($jsonString, true) ?? [];
+
+$oldjson["type"] = $type;
+
+if ($type === 'ctext'){
+	$oldjson["ctext"] = $ctext;
+}
+
+$jsonData = json_encode($oldjson);
+
+
+
+// Write file
+if (file_put_contents($filepath, $jsonData) === false) {
+    echo json_encode([
+        'success' => false,
+        'message' => 'Failed to write JSON file: ' . $filepath
+    ]);
+    exit;
+}
+
+// ---------- Return JSON ----------
+echo json_encode([
+    'success' => true,
+    'message' => 'JSON type updated',
+	'disable_start_button' => true
+]);
+exit;