feat: invites (#967)

* stub invite endpoint

* feat: First pass invite UI

* feat: allow removing invite rows

* First pass: sending logic

* fix: label accessibility

* fix: add button submits
incorrect permissions
middleware flow error

* 💚

* Error handling, email filtering, tests

* Flow

* Add Invite to people page
Remove old Tip

* Add copy link to subdomain

server/commands/userInviter.js

@@ -0,0 +1,57 @@
+// @flow
+import { uniqBy } from 'lodash';
+import { User, Team } from '../models';
+import events from '../events';
+import mailer from '../mailer';
+
+type Invite = { name: string, email: string };
+
+export default async function documentMover({
+  user,
+  invites,
+}: {
+  user: User,
+  invites: Invite[],
+}): Promise<{ sent: Invite[] }> {
+  const team = await Team.findByPk(user.teamId);
+
+  // filter out empties, duplicates and non-emails
+  const compactedInvites = uniqBy(
+    invites.filter(invite => !!invite.email.trim() && invite.email.match('@')),
+    'email'
+  );
+  const emails = compactedInvites.map(invite => invite.email);
+
+  // filter out existing users
+  const existingUsers = await User.findAll({
+    where: {
+      teamId: user.teamId,
+      email: emails,
+    },
+  });
+  const existingEmails = existingUsers.map(user => user.email);
+  const filteredInvites = compactedInvites.filter(
+    invite => !existingEmails.includes(invite.email)
+  );
+
+  // send and record invites
+  filteredInvites.forEach(async invite => {
+    await mailer.invite({
+      to: invite.email,
+      name: invite.name,
+      actorName: user.name,
+      actorEmail: user.email,
+      teamName: team.name,
+      teamUrl: team.url,
+    });
+
+    events.add({
+      name: 'users.invite',
+      actorId: user.id,
+      teamId: user.teamId,
+      email: invite.email,
+    });
+  });
+
+  return { sent: filteredInvites };
+}