perf: Move exports to worker service (#2514)

* first pass

* fixes

* fix: Move export related emails to queue

* i18n

server/commands/collectionExporter.js

@@ -0,0 +1,44 @@
+// @flow
+import { Collection, Event, Team, User, FileOperation } from "../models";
+import { getAWSKeyForFileOp } from "../utils/s3";
+
+export default async function collectionExporter({
+  collection,
+  team,
+  user,
+  ip,
+}: {
+  collection?: Collection,
+  team: Team,
+  user: User,
+  ip: string,
+}) {
+  const collectionId = collection?.id;
+  const key = getAWSKeyForFileOp(user.teamId, collection?.name || team.name);
+
+  const fileOperation = await FileOperation.create({
+    type: "export",
+    state: "creating",
+    key,
+    url: null,
+    size: 0,
+    collectionId,
+    userId: user.id,
+    teamId: user.teamId,
+  });
+
+  // Event is consumed on worker in queues/processors/exports
+  await Event.create({
+    name: collection ? "collections.export" : "collections.export_all",
+    collectionId,
+    teamId: user.teamId,
+    actorId: user.id,
+    modelId: fileOperation.id,
+    ip,
+  });
+
+  fileOperation.user = user;
+  fileOperation.collection = collection;
+
+  return fileOperation;
+}