feat: private content (#1137)

* save images as private and serve via signed url from images.info api

* download private images to directory on export

* fix lint errors

* private s3 default, AWS.s3 module level scope, default s3 url expiry

* combine regex to one, and only replace when there are matches

* fix lint

* code not needed anymore, remove

* updates after pulling master

* revert the uploadToS3FromUrl url return

* use model gettr to compact code, rename to attachments api

* basic checking of document read permission to allow attachment viewing

* fix: Continue to upload avatars as public
fix: Allow redirect for non-private attachments

* add support for publicly shared documents

* catch errors which crash the app during zip export and user creation

* add tests

* enable AWS signature v4 for s3

* switch to use factories to build models for testing

* add isDocker flag for local serving of attachment redirect url

* fix redirect tests

Co-authored-by: Tom Moor <tom.moor@gmail.com>

server/test/factories.js

@@ -1,5 +1,13 @@
 // @flow
-import { Share, Team, User, Event, Document, Collection } from '../models';
+import {
+  Share,
+  Team,
+  User,
+  Event,
+  Document,
+  Collection,
+  Attachment,
+} from '../models';
 import uuid from 'uuid';
 
 let count = 0;
@@ -104,3 +112,38 @@ export async function buildDocument(overrides: Object = {}) {
     ...overrides,
   });
 }
+
+export async function buildAttachment(overrides: Object = {}) {
+  count++;
+
+  if (!overrides.teamId) {
+    const team = await buildTeam();
+    overrides.teamId = team.id;
+  }
+
+  if (!overrides.userId) {
+    const user = await buildUser();
+    overrides.userId = user.id;
+  }
+
+  if (!overrides.collectionId) {
+    const collection = await buildCollection(overrides);
+    overrides.collectionId = collection.id;
+  }
+
+  if (!overrides.documentId) {
+    const document = await buildDocument(overrides);
+    overrides.documentId = document.id;
+  }
+
+  return Attachment.create({
+    key: `uploads/key/to/file ${count}.png`,
+    url: `https://redirect.url.com/uploads/key/to/file ${count}.png`,
+    contentType: 'image/png',
+    size: 100,
+    acl: 'public-read',
+    createdAt: new Date('2018-01-02T00:00:00.000Z'),
+    updatedAt: new Date('2018-01-02T00:00:00.000Z'),
+    ...overrides,
+  });
+}