feat(cloud): set seat limit checks for partner member invitations

apps/web/src/views/invite/index.tsx

@@ -36,6 +36,17 @@ export default function InvitePage() {
         return router.push(`/boards`);
       }
 
+      if (
+        error.data?.code === "FORBIDDEN" &&
+        error.message === "SEAT_LIMIT_REACHED"
+      ) {
+        setError(
+          t`This workspace has reached its member limit. The workspace owner will need to upgrade their plan.`,
+        );
+        setIsProcessing(false);
+        return;
+      }
+
       setError(
         error.message ||
           t`Failed to accept invitation. Please try again later, or contact customer support.`,

apps/web/src/views/members/components/InviteMemberForm.tsx

@@ -26,9 +26,13 @@ import { api } from "~/utils/api";
 export function InviteMemberForm({
   subscriptions,
   unlimitedSeats,
+  memberCount,
+  seatLimit,
 }: {
   subscriptions: Subscription[] | undefined;
   unlimitedSeats: boolean;
+  memberCount: number;
+  seatLimit: number | null;
 }) {
   const utils = api.useUtils();
   const [isShareInviteLinkEnabled, setIsShareInviteLinkEnabled] =
@@ -77,6 +81,8 @@ export function InviteMemberForm({
     }
   }, [activeInviteLink]);
 
+  const isAtSeatLimit = seatLimit !== null && memberCount >= seatLimit;
+
   const inviteMember = api.member.invite.useMutation({
     onSuccess: async () => {
       closeModal();
@@ -93,6 +99,15 @@ export function InviteMemberForm({
           message: t`User is already a member of this workspace`,
           icon: "error",
         });
+      } else if (
+        error.data?.code === "FORBIDDEN" &&
+        error.message === "SEAT_LIMIT_REACHED"
+      ) {
+        showPopup({
+          header: t`Seat limit reached`,
+          message: t`You've reached your ${seatLimit ?? 0}-seat limit. Please upgrade your plan to add more members.`,
+          icon: "error",
+        });
       } else {
         showPopup({
           header: t`Error inviting member`,
@@ -284,22 +299,30 @@ export function InviteMemberForm({
             </div>
           )}
 
-        {env("NEXT_PUBLIC_KAN_ENV") === "cloud" &&
-          !isPartnerTier &&
-          !unlimitedSeats && (
-            <div className="mt-3 rounded-md bg-light-100 p-3 text-xs text-light-900 dark:bg-dark-200 dark:text-dark-900">
-              {hasTeamSubscription || hasProSubscription ? (
+        {env("NEXT_PUBLIC_KAN_ENV") === "cloud" && (
+          <div className="mt-3 rounded-md bg-light-100 p-3 text-xs text-light-900 dark:bg-dark-200 dark:text-dark-900">
+            {isPartnerTier && seatLimit !== null ? (
+              <div>
+                <div className="flex items-center justify-between">
+                  <span className="font-medium text-emerald-500 dark:text-emerald-400">
+                    {hasTeamSubscription ? t`Team Plan` : t`Pro Plan`}
+                  </span>
+                  <span className="text-light-900 dark:text-dark-900">
+                    {memberCount} / {seatLimit} {t`seats`}
+                  </span>
+                </div>
+              </div>
+            ) : !unlimitedSeats ? (
+              hasTeamSubscription || hasProSubscription ? (
                 <div>
                   <span className="font-medium text-emerald-500 dark:text-emerald-400">
                     {hasTeamSubscription ? t`Team Plan` : t`Pro Plan ∞`}
                   </span>
-                  {!isPartnerTier && (
-                    <p className="mt-1">
-                      {unlimitedSeats
-                        ? t`You have unlimited seats with your Pro Plan. There is no additional charge for new members!`
-                        : t`Adding a new member will cost an additional ${price} (${billingType}) per seat.`}
-                    </p>
-                  )}
+                  <p className="mt-1">
+                    {unlimitedSeats
+                      ? t`You have unlimited seats with your Pro Plan. There is no additional charge for new members!`
+                      : t`Adding a new member will cost an additional ${price} (${billingType}) per seat.`}
+                  </p>
                 </div>
               ) : (
                 <div>
@@ -310,9 +333,10 @@ export function InviteMemberForm({
                     {t`Inviting members requires a Team or Pro plan. You'll be redirected to upgrade your workspace.`}
                   </p>
                 </div>
-              )}
-            </div>
-          )}
+              )
+            ) : null}
+          </div>
+        )}
       </div>
 
       <div className="mt-12 flex items-center justify-end space-x-4 border-t border-light-600 px-5 pb-5 pt-5 dark:border-dark-600">

apps/web/src/views/members/index.tsx

@@ -11,7 +11,11 @@ import { twMerge } from "tailwind-merge";
 
 import type { Subscription } from "@kan/shared/utils";
 import { authClient } from "@kan/auth/client";
-import { getSubscriptionByPlan, hasUnlimitedSeats } from "@kan/shared/utils";
+import {
+  getSeatLimit,
+  getSubscriptionByPlan,
+  hasUnlimitedSeats,
+} from "@kan/shared/utils";
 
 import Avatar from "~/components/Avatar";
 import Button from "~/components/Button";
@@ -84,6 +88,7 @@ export default function MembersPage() {
   const isPaidPlan = isProPlan || isTeamPlan;
 
   const activeMembers = data?.members.length ?? 0;
+  const seatLimit = getSeatLimit(subscriptions);
   const totalSeats =
     teamSubscription?.seats ??
     proSubscription?.seats ??
@@ -402,6 +407,8 @@ export default function MembersPage() {
             <InviteMemberForm
               subscriptions={subscriptions}
               unlimitedSeats={unlimitedSeats}
+              memberCount={activeMembers}
+              seatLimit={seatLimit}
             />
           </Modal>
 

packages/api/src/routers/member.ts

@@ -10,13 +10,14 @@ import * as userRepo from "@kan/db/repository/user.repo";
 import * as workspaceRepo from "@kan/db/repository/workspace.repo";
 import {
   generateUID,
+  getSeatLimit,
   getSubscriptionByPlan,
   hasUnlimitedSeats,
 } from "@kan/shared";
 import { updateSubscriptionSeats } from "@kan/stripe";
 
-import { createTRPCRouter, protectedProcedure, publicProcedure } from "../trpc";
 import { memberInviteResponseSchema } from "../schemas";
+import { createTRPCRouter, protectedProcedure, publicProcedure } from "../trpc";
 import {
   assertCanManageMember,
   assertCanManageRole,
@@ -114,6 +115,20 @@ export const memberRouter = createTRPCRouter({
             });
           }
         }
+
+        const seatLimit = getSeatLimit(subscriptions);
+        if (seatLimit !== null) {
+          const memberCount = await memberRepo.getCountByWorkspaceId(
+            ctx.db,
+            workspace.id,
+          );
+          if (memberCount >= seatLimit) {
+            throw new TRPCError({
+              message: `SEAT_LIMIT_REACHED`,
+              code: "FORBIDDEN",
+            });
+          }
+        }
       }
 
       const existingUser = await userRepo.getByEmail(ctx.db, input.email);
@@ -644,6 +659,20 @@ export const memberRouter = createTRPCRouter({
             });
           }
         }
+
+        const seatLimit = getSeatLimit(subscriptions);
+        if (seatLimit !== null) {
+          const memberCount = await memberRepo.getCountByWorkspaceId(
+            ctx.db,
+            workspace.id,
+          );
+          if (memberCount >= seatLimit) {
+            throw new TRPCError({
+              message: `SEAT_LIMIT_REACHED`,
+              code: "FORBIDDEN",
+            });
+          }
+        }
       }
 
       // Get the workspace role to set roleId

packages/db/src/repository/member.repo.ts

@@ -1,4 +1,4 @@
-import { and, count, eq, isNull } from "drizzle-orm";
+import { and, count, eq, isNull, or } from "drizzle-orm";
 
 import type { dbClient } from "@kan/db/client";
 import type { MemberRole, MemberStatus } from "@kan/db/schema";
@@ -19,6 +19,27 @@ export const getActiveCount = async (db: dbClient) => {
   return result[0]?.count ?? 0;
 };
 
+export const getCountByWorkspaceId = async (
+  db: dbClient,
+  workspaceId: number,
+) => {
+  const result = await db
+    .select({ count: count() })
+    .from(workspaceMembers)
+    .where(
+      and(
+        eq(workspaceMembers.workspaceId, workspaceId),
+        isNull(workspaceMembers.deletedAt),
+        or(
+          eq(workspaceMembers.status, "active"),
+          eq(workspaceMembers.status, "invited"),
+        ),
+      ),
+    );
+
+  return result[0]?.count ?? 0;
+};
+
 export const create = async (
   db: dbClient,
   memberInput: {

packages/shared/src/utils/subscriptions.ts

@@ -54,3 +54,14 @@ export const hasUnlimitedSeats = (
   const activeSubscriptions = getActiveSubscriptions(subscriptions);
   return activeSubscriptions.some((sub) => sub.unlimitedSeats);
 };
+
+export const getSeatLimit = (
+  subscriptions: Subscription[] | undefined,
+): number | null => {
+  const activeSubscriptions = getActiveSubscriptions(subscriptions);
+  const partnerSub = activeSubscriptions.find(
+    (sub) =>
+      sub.partnerTier !== null && !sub.unlimitedSeats && sub.seats !== null,
+  );
+  return partnerSub?.seats ?? null;
+};