Started on DBv1 migration

app/imports/migrations/methods/getVersion.js

@@ -0,0 +1,30 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import { assertAdmin } from '/imports/api/sharing/sharingPermissions.js';
+import { Migrations } from 'meteor/percolate:migrations';
+
+const dbVersionToGitVersion = {
+  0: '2.0-beta.32 and lower',
+  1: '2.0-beta.33',
+}
+
+const getVersion = new ValidatedMethod({
+  name: 'admin.getVersion',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run() {
+    if (Meteor.isClient) return;
+    assertAdmin(this.userId);
+    const dbVersion = Migrations.getVersion();
+    return {
+      dbVersion,
+      gitVersion: dbVersionToGitVersion[dbVersion],
+    }
+  },
+});
+
+export default getVersion;