feat: tiered billing (cloud) (#1294)

* feat: tiered billing (cloud)

* custom tier

apps/server/src/database/migrations/20250623T215045-more-billing-columns.ts

@@ -0,0 +1,23 @@
+import { type Kysely } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('billing')
+    .addColumn('billing_scheme', 'varchar', (col) => col)
+    .addColumn('tiered_up_to', 'varchar', (col) => col)
+    .addColumn('tiered_flat_amount', 'int8', (col) => col)
+    .addColumn('tiered_unit_amount', 'int8', (col) => col)
+    .addColumn('plan_name', 'varchar', (col) => col)
+    .execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('billing')
+    .dropColumn('billing_scheme')
+    .dropColumn('tiered_up_to')
+    .dropColumn('tiered_flat_amount')
+    .dropColumn('tiered_unit_amount')
+    .dropColumn('plan_name')
+    .execute();
+}

apps/server/src/database/types/db.d.ts

@@ -84,6 +84,7 @@ export interface Backlinks {
 
 export interface Billing {
   amount: Int8 | null;
+  billingScheme: string | null;
   cancelAt: Timestamp | null;
   cancelAtPeriodEnd: boolean | null;
   canceledAt: Timestamp | null;
@@ -96,6 +97,7 @@ export interface Billing {
   metadata: Json | null;
   periodEndAt: Timestamp | null;
   periodStartAt: Timestamp;
+  planName: string | null;
   quantity: Int8 | null;
   status: string;
   stripeCustomerId: string | null;
@@ -103,6 +105,9 @@ export interface Billing {
   stripePriceId: string | null;
   stripeProductId: string | null;
   stripeSubscriptionId: string;
+  tieredFlatAmount: Int8 | null;
+  tieredUnitAmount: Int8 | null;
+  tieredUpTo: string | null;
   updatedAt: Generated<Timestamp>;
   workspaceId: string;
 }