import Planka upstream

planka/server/api/helpers/utils/is-preloaded-favicon-exists.js

@@ -0,0 +1,30 @@
+/*!
+ * Copyright (c) 2024 PLANKA Software GmbH
+ * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const PRELOADED_FAVICON_FILENAMES = fs
+  .readdirSync(path.join(sails.config.paths.public, 'preloaded-favicons'))
+  .filter((filename) => filename.endsWith('.png'));
+
+const PRELOADED_FAVICON_HOSTNAMES_SET = new Set(
+  PRELOADED_FAVICON_FILENAMES.map((faviconFilename) => faviconFilename.slice(0, -4)),
+);
+
+module.exports = {
+  sync: true,
+
+  inputs: {
+    hostname: {
+      type: 'string',
+      required: true,
+    },
+  },
+
+  fn(inputs) {
+    return PRELOADED_FAVICON_HOSTNAMES_SET.has(inputs.hostname);
+  },
+};