Added "Copy to Library"

app/imports/api/creature/creatureProperties/methods/copyPropertyToLibrary.js

@@ -0,0 +1,189 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import LibraryNodes from '/imports/api/library/LibraryNodes.js';
+import { RefSchema } from '/imports/api/parenting/ChildSchema.js';
+import {
+  assertEditPermission,
+  assertDocEditPermission,
+  assertCopyPermission
+} from '/imports/api/sharing/sharingPermissions.js';
+import {
+  setLineageOfDocs,
+  getAncestry,
+  renewDocIds
+} from '/imports/api/parenting/parenting.js';
+import { reorderDocs } from '/imports/api/parenting/order.js';
+import { setDocToLastOrder } from '/imports/api/parenting/order.js';
+import Libraries from '/imports/api/library/Libraries.js';
+const DUPLICATE_CHILDREN_LIMIT = 500;
+
+const copyPropertyToLibrary = new ValidatedMethod({
+  name: 'creatureProperties.copyPropertyToLibrary',
+  validate: new SimpleSchema({
+    propId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+    parentRef: {
+      type: RefSchema,
+    },
+    order: {
+      type: Number,
+      optional: true,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 1,
+    timeInterval: 5000,
+  },
+  run({ propId, parentRef, order }) {
+    // get the new ancestry for the properties
+    let { parentDoc, ancestors } = getAncestry({ parentRef });
+
+    // Check permission to edit the destination
+    let rootLibrary;
+    if (parentRef.collection === 'libraries') {
+      rootLibrary = parentDoc;
+    } else if (parentRef.collection === 'libraryNodes') {
+      rootLibrary = Libraries.findOne(parentDoc.ancestors[0].id)
+    } else {
+      throw `${parentRef.collection} is not a valid parent collection`
+    }
+    assertEditPermission(rootLibrary, this.userId);
+
+    const insertedRootNode = insertNodeFromProperty(propId, ancestors, order, this);
+
+    // Tree structure changed by inserts, reorder the tree
+    reorderDocs({
+      collection: LibraryNodes,
+      ancestorId: rootLibrary._id,
+    });
+
+    // Return the docId of the inserted root property
+    return insertedRootNode?._id;
+  },
+});
+
+function insertNodeFromProperty(propId, ancestors, order, method) {
+  // Fetch the property and its descendants, provided they have not been
+  // removed
+  let prop = CreatureProperties.findOne({
+    _id: propId,
+    removed: { $ne: true },
+  });
+  if (!prop) {
+    if (Meteor.isClient) return;
+    else {
+      throw new Meteor.Error(
+        'Insert property from library failed',
+        `No property with id '${propId}' was found`
+      );
+    }
+  }
+
+  // Make sure we can edit this property
+  assertDocEditPermission(prop, method.userId);
+
+  let oldParent = prop.parent;
+  const propCursor = CreatureProperties.find({
+    'ancestors.id': propId,
+    removed: { $ne: true },
+  });
+
+  // Make sure there aren't too many descendants
+  if (propCursor.count() > DUPLICATE_CHILDREN_LIMIT) {
+    throw new Meteor.Error('Copy children limit',
+      `The property has over ${DUPLICATE_CHILDREN_LIMIT} descendants and cannot be copied`);
+  }
+
+  let props = propCursor.fetch();
+
+  // The root prop is first in the array of props
+  // It must get the first generated ID to prevent flickering
+  props = [prop, ...props];
+
+  // If the docs came from a library, that library must consent to this user copying their
+  // properties
+  assertSourceLibraryCopyPermission(props, method);
+
+  // re-map all the ancestors
+  setLineageOfDocs({
+    docArray: props,
+    newAncestry: ancestors,
+    oldParent,
+  });
+
+  // Give the docs new IDs without breaking internal references
+  renewDocIds({
+    docArray: props,
+    collectionMap: { 'creatureProperties': 'libraryNodes' }
+  });
+
+  // Order the root node
+  if (order === undefined) {
+    setDocToLastOrder({
+      collection: LibraryNodes,
+      doc: prop,
+    });
+  } else {
+    prop.order = order;
+  }
+
+  // Insert the props as library nodes
+  LibraryNodes.batchInsert(props);
+  return prop;
+}
+
+/**
+ * 
+ * @param {[Property]} props The properties to check
+ * @param {String} userId The userId trying to copy these properties to a library
+ * Checks that every property can be copied out of the library that originated it by this user
+ */
+function assertSourceLibraryCopyPermission(props, method) {
+  // Skip on the client
+  if (method.isSimulation) return;
+
+  // Get all the library node ids that are sources for these properties
+  const libraryNodeIds = [];
+  props.forEach(prop => {
+    if (prop.libraryNodeId) libraryNodeIds.push(prop.libraryNodeId);
+  });
+  if (!libraryNodeIds.length) return;
+
+  // Get the actual library Ids that each of these source nodes came from
+  const sourceLibIds = new Set();
+  LibraryNodes.find({
+    _id: { $in: libraryNodeIds }
+  }, {
+    fields: { ancestors: 1 }
+  }).forEach(node => {
+    sourceLibIds.add(node.ancestors?.[0]?.id);
+  });
+
+  // Assert copy permission on each of those libraries
+  Libraries.find({
+    _id: { $in: Array.from(sourceLibIds) }
+  }, {
+    fields: {
+      name: 1,
+      owner: 1,
+      readers: 1,
+      writers: 1,
+      public: 1,
+      readersCanCopy: 1,
+    }
+  }).forEach(lib => {
+    try {
+      assertCopyPermission(lib, method.userId);
+    } catch (e) {
+      throw new Meteor.Error('Copy permission denied',
+        `One of the properties you are copying comes from ${lib.name}, which you do not have permission to copy from`);
+    }
+  });
+}
+
+export default copyPropertyToLibrary;