chore(gatekeeper): add workspace_seats table and types

packages/server/modules/gatekeeper/domain/billing.ts

@@ -169,3 +169,13 @@ export type ReconcileSubscriptionData = (args: {
   subscriptionData: SubscriptionDataInput
   applyProrotation: boolean
 }) => Promise<void>
+
+export type WorkspaceSeatType = 'viewer' | 'editor'
+
+export type WorkspaceSeat = {
+  workspaceId: string
+  userId: string
+  type: WorkspaceSeatType
+  createdAt: Date
+  updatedAt: Date
+}

packages/server/modules/gatekeeper/migrations/20250224141824_create_workspace_seats_table.ts

@@ -0,0 +1,36 @@
+import { Knex } from 'knex'
+
+const WORKSPACE_SEATS_TABLE = 'workspace_seats'
+const WORKSPACES_TABLE = 'workspaces'
+const USERS_TABLE = 'users'
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.createTable(WORKSPACE_SEATS_TABLE, (table) => {
+    table
+      .text('workspaceId')
+      .references('id')
+      .inTable(WORKSPACES_TABLE)
+      .onDelete('cascade')
+      .notNullable()
+    table
+      .text('userId')
+      .references('id')
+      .inTable(USERS_TABLE)
+      .onDelete('cascade')
+      .notNullable()
+    table.text('type').notNullable()
+    table
+      .timestamp('createdAt', { precision: 3, useTz: true })
+      .defaultTo(knex.fn.now())
+      .notNullable()
+    table
+      .timestamp('updatedAt', { precision: 3, useTz: true })
+      .defaultTo(knex.fn.now())
+      .notNullable()
+    table.primary(['workspaceId', 'userId'])
+  })
+}
+
+export async function down(knex: Knex): Promise<void> {
+  await knex.schema.dropTable(WORKSPACE_SEATS_TABLE)
+}