Added CRUD API and UI for creature folders

app/imports/api/creature/creatureFolders/methods.js/reorderCreatureFolder.js

@@ -0,0 +1,43 @@
+import CreatureFolders from '/imports/api/creature/creatureFolders/CreatureFolders.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+
+const reorderCreatureFolder = new ValidatedMethod({
+  name: 'creatureFolders.methods.reorder',
+  validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, order}) {
+    // Ensure logged in
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('creatureFolders.methods.reorder.denied',
+      'You need to be logged in to reorder a folder');
+    }
+    // Check that this folder is owned by the user
+    let existingFolder = CreatureFolders.findOne(_id);
+    if (existingFolder.owner !== userId){
+      throw new Meteor.Error('creatureFolders.methods.reorder.denied',
+      'This folder does not belong to you');
+    }
+    // First give it the new order, it should end in 0.5 putting it between two other docs
+    CreatureFolders.update(_id, {$set: {order}});
+    this.unblock();
+    // Reorder all the folders with integer numbers in this new order
+    CreatureFolders.find({
+      owner: userId
+    }, {
+      fields: {order: 1,},
+      sort: {order: -1}
+    }).forEach((folder, index) => {
+      if (folder.order !== index){
+        CreatureFolders.update(_id, {$set: {order: index}})
+      }
+    });
+  },
+});
+
+export default reorderCreatureFolder;