Progress all over the place with viewer, forms, small engine tweaks

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

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+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import computeCreature from '/imports/api/engine/computeCreature.js';
+
+const flipToggle = new ValidatedMethod({
+  name: 'creatureProperties.flipToggle',
+  validate({_id}){
+		if (!_id) throw new Meteor.Error('No _id', '_id is required');
+  },
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id}) {
+    // Permission
+    let property = CreatureProperties.findOne(_id, {
+      fields: {type: 1, ancestors: 1, enabled: 1, disabled: 1}
+    });
+    if (property.type !== 'toggle'){
+      throw new Meteor.Error('wrong property',
+        'This method can only be applied to toggles');
+    }
+    if (!property.enabled && !property.disabled){
+      throw new Meteor.Error('Computed toggle',
+        'Can\'t flip a toggle that is computed')
+    }
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+
+    // Invert the current value, disabled is the canonical store of value
+    const currentValue = !property.disabled;
+		CreatureProperties.update(_id, {$set: {
+      enabled: !currentValue,
+      disabled: currentValue,
+    }}, {
+			selector: {type: 'toggle'},
+		});
+
+    // Updating a toggle is likely to change the whole tree, do a full recompute
+    computeCreature(rootCreature._id);
+  },
+});
+
+export default flipToggle;