Began work on copy to for library nodes

app/imports/api/library/methods/copyLibraryNodeTo.js

@@ -0,0 +1,100 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import SimpleSchema from 'simpl-schema';
+i
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import { RefSchema } from '/imports/api/parenting/ChildSchema.js';
+import LibraryNodes from '/imports/api/library/LibraryNodes.js';
+import { assertDocEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import {
+  setLineageOfDocs,
+  renewDocIds
+} from '/imports/api/parenting/parenting.js';
+import { reorderDocs } from '/imports/api/parenting/order.js';
+import fetchDocByRef from '/imports/api/parenting/fetchDocByRef.js';
+
+var snackbar;
+if (Meteor.isClient) {
+  snackbar = require(
+    '/imports/ui/components/snackbars/SnackbarQueue.js'
+  ).snackbar
+}
+
+const DUPLICATE_CHILDREN_LIMIT = 100;
+
+const copyLibraryNodeTo = new ValidatedMethod({
+  name: 'libraryNodes.copyTo',
+  validate: new SimpleSchema({
+    _id: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+    parent: {
+      type: RefSchema,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 1,
+    timeInterval: 5000,
+  },
+  run({ _id, parent }) {
+    if (parent.collection !== 'libraryNodes' && parent.collection !== 'libraries') {
+      throw new Meteor.Error('Invalid destination',
+        'Library documents can only be copied to destinations inside other libraries'
+      );
+    }
+    const libraryNode = LibraryNodes.findOne(_id);
+    const parentDoc = fetchDocByRef(parent);
+    assertDocEditPermission(libraryNode, this.userId);
+
+    let randomSrc = DDP.randomStream('copyLibraryNodeTo');
+    let libraryNodeId = randomSrc.id();
+    libraryNode._id = libraryNodeId;
+
+    let decendants = LibraryNodes.find({
+      'ancestors.id': _id,
+      removed: { $ne: true },
+    }, {
+      limit: DUPLICATE_CHILDREN_LIMIT + 1,
+      sort: { order: 1 },
+    }).fetch();
+
+    if (decendants.length > DUPLICATE_CHILDREN_LIMIT) {
+      decendants.pop();
+      if (Meteor.isClient) {
+        snackbar({
+          text: `Only the first ${DUPLICATE_CHILDREN_LIMIT} children were duplicated`,
+        });
+      }
+    }
+
+    const nodes = [libraryNode, decendants];
+
+    const newAncestry = parentDoc.ancestors || [];
+    newAncestry.push(parent);
+    // re-map all the ancestors
+    setLineageOfDocs({
+      docArray: nodes,
+      newAncestry,
+      oldParent: libraryNode.parent,
+    });
+
+    // Give the docs new IDs without breaking internal references
+    renewDocIds({ docArray: nodes });
+
+    // Order the root node
+    libraryNode.order = (parentDoc.order || 0) + 0.5;
+
+    LibraryNodes.batchInsert(nodes);
+
+    // Tree structure changed by inserts, reorder the tree
+    reorderDocs({
+      collection: LibraryNodes,
+      ancestorId: parent.collection === 'libraries' ? parent.id : parentDoc.ancestors[0].id,
+    });
+
+    return libraryNodeId;
+  },
+});
+
+export default duplicateLibraryNode;

app/imports/api/library/methods/duplicateLibraryNode.js

@@ -16,7 +16,7 @@ if (Meteor.isClient) {
   ).snackbar
 }
 
-const DUPLICATE_CHILDREN_LIMIT = 50;
+const DUPLICATE_CHILDREN_LIMIT = 100;
 
 const duplicateLibraryNode = new ValidatedMethod({
   name: 'libraryNodes.duplicate',