Reject inviting the same user twice.

packages/worker/src/api/controllers/global/users.ts

@@ -349,14 +349,12 @@ export const checkInvite = async (ctx: any) => {
 }
 
 export const getUserInvites = async (ctx: any) => {
-  let invites
   try {
     // Restricted to the currently authenticated tenant
-    invites = await getInviteCodes()
+    ctx.body = await getInviteCodes()
   } catch (e) {
     ctx.throw(400, "There was a problem fetching invites")
   }
-  ctx.body = invites
 }
 
 export const updateInvite = async (ctx: any) => {

packages/worker/src/api/routes/global/tests/users.spec.ts

@@ -59,6 +59,8 @@ describe("/api/global/users", () => {
       const email = structures.users.newEmail()
       await config.api.users.sendUserInvite(sendMailMock, email)
 
+      jest.clearAllMocks()
+
       const { code, res } = await config.api.users.sendUserInvite(
         sendMailMock,
         email,

packages/worker/src/sdk/users/users.ts

@@ -1,5 +1,9 @@
 import { events, tenancy, users as usersCore } from "@budibase/backend-core"
-import { InviteUsersRequest, InviteUsersResponse } from "@budibase/types"
+import {
+  InviteUserRequest,
+  InviteUsersRequest,
+  InviteUsersResponse,
+} from "@budibase/types"
 import { sendEmail } from "../../utilities/email"
 import { EmailTemplatePurpose } from "../../constants"
 import { getInviteCodes } from "../..//utilities/redis"
@@ -15,12 +19,17 @@ export async function invite(
   const matchedEmails = await usersCore.searchExistingEmails(
     users.map(u => u.email)
   )
-  const existingInvites = await getInviteCodes()
-  const newUsers = []
+  const invitedEmails = (await getInviteCodes()).map(invite => invite.email)
+  const newUsers: InviteUserRequest[] = []
 
   // separate duplicates from new users
   for (let user of users) {
-    if (matchedEmails.includes(user.email)) {
+    if (
+      matchedEmails.includes(user.email) ||
+      invitedEmails.includes(user.email)
+    ) {
+      // This "Unavailable" is load bearing. The tests and frontend both check for it
+      // specifically
       response.unsuccessful.push({ email: user.email, reason: "Unavailable" })
     } else {
       newUsers.push(user)

packages/worker/src/utilities/redis.ts

@@ -66,7 +66,11 @@ async function writeCode(db: RedisDBName, value: Invite | PasswordReset) {
   return code
 }
 
-async function updateCode(db: RedisDBName, code: string, value: any) {
+async function updateCode(
+  db: RedisDBName,
+  code: string,
+  value: Invite | PasswordReset
+) {
   const client = getClient(db)
   await client.store(code, value, getExpirySecondsForDB(db))
 }