chore: import upstream snapshot with attribution

api/server/middleware/accessResources/canAccessPromptGroupResource.js

@@ -0,0 +1,61 @@
+const { ResourceType } = require('librechat-data-provider');
+const { canAccessResource } = require('./canAccessResource');
+const { getPromptGroup } = require('~/models');
+
+/**
+ * PromptGroup ID resolver function
+ * Resolves promptGroup ID to MongoDB ObjectId
+ *
+ * @param {string} groupId - PromptGroup ID from route parameter
+ * @returns {Promise<Object|null>} PromptGroup document with _id field, or null if not found
+ */
+const resolvePromptGroupId = async (groupId) => {
+  return await getPromptGroup({ _id: groupId });
+};
+
+/**
+ * PromptGroup-specific middleware factory that creates middleware to check promptGroup access permissions.
+ * This middleware extends the generic canAccessResource to handle promptGroup ID resolution.
+ *
+ * @param {Object} options - Configuration options
+ * @param {number} options.requiredPermission - The permission bit required (1=view, 2=edit, 4=delete, 8=share)
+ * @param {string} [options.resourceIdParam='groupId'] - The name of the route parameter containing the promptGroup ID
+ * @returns {Function} Express middleware function
+ *
+ * @example
+ * // Basic usage for viewing promptGroups
+ * router.get('/prompts/groups/:groupId',
+ *   canAccessPromptGroupResource({ requiredPermission: 1 }),
+ *   getPromptGroup
+ * );
+ *
+ * @example
+ * // Custom resource ID parameter and edit permission
+ * router.patch('/prompts/groups/:id',
+ *   canAccessPromptGroupResource({
+ *     requiredPermission: 2,
+ *     resourceIdParam: 'id'
+ *   }),
+ *   updatePromptGroup
+ * );
+ */
+const canAccessPromptGroupResource = (options) => {
+  const { requiredPermission, resourceIdParam = 'groupId' } = options;
+
+  if (!requiredPermission || typeof requiredPermission !== 'number') {
+    throw new Error(
+      'canAccessPromptGroupResource: requiredPermission is required and must be a number',
+    );
+  }
+
+  return canAccessResource({
+    resourceType: ResourceType.PROMPTGROUP,
+    requiredPermission,
+    resourceIdParam,
+    idResolver: resolvePromptGroupId,
+  });
+};
+
+module.exports = {
+  canAccessPromptGroupResource,
+};