Setting up db migrations

apps/api/src/database/db.ts

@@ -1,5 +1,5 @@
-import { Kysely, PostgresDialect } from 'kysely';
-import { type DB } from 'kysely-codegen';
+import { CreateTableBuilder, Kysely, PostgresDialect, sql } from 'kysely';
+import { type DB } from "./types";
 import { Pool } from "pg";
 import { env } from '../util';
 
@@ -10,3 +10,15 @@ export const db = new Kysely<DB>({
         }),
     })
 });
+
+export function addDefaultColumns(ctb: CreateTableBuilder<any, any>) {
+    return ctb
+        .addColumn("id", "bigint", (cb) => cb
+            .generatedAlwaysAsIdentity()
+            .primaryKey()
+        )
+        .addColumn("created_at", "timestamptz", (cb) => cb
+            .notNull()
+            .defaultTo(sql`now()`)
+        )
+};

apps/api/src/database/migrations/2026-06-03.ts

@@ -1,13 +1,8 @@
-import { CreateTableBuilder, sql } from "kysely";
-import { db } from "./db";
-import { log } from "../util";
+import { Kysely, sql } from 'kysely'
+import { addDefaultColumns } from '../db';
 
-// =====================
-// PRODUCT SYNCS
-// =====================
-{
-    log.info({ name: "product_syncs" }, "Creating table");
-    await db.schema.dropTable("product_syncs").ifExists().execute()
+export async function up(db: Kysely<any>): Promise<void> {
+    // TABLE: PRODUCT_SYNCS
     await db.schema.createTable("product_syncs")
         .$call(addDefaultColumns)
         .addColumn("printful_product_id_filter", sql`integer[]`)
@@ -20,7 +15,7 @@ import { log } from "../util";
         .addColumn("has_failed", "boolean", (cb) => cb.notNull().defaultTo(false))
         .execute()
 
-    await db.schema.dropIndex("idx_one_active_product_sync").ifExists().execute();
+    // INDEX: ONE_ACTIVE_PRODUCT_SYNC
     await db.schema.createIndex("idx_one_active_product_sync")
         .on("product_syncs")
         .unique()
@@ -31,14 +26,10 @@ import { log } from "../util";
         .execute();
 }
 
-function addDefaultColumns(ctb: CreateTableBuilder<any, any>) {
-    return ctb
-        .addColumn("id", "bigint", (cb) => cb
-            .generatedAlwaysAsIdentity()
-            .primaryKey()
-        )
-        .addColumn("created_at", "timestamptz", (cb) => cb
-            .notNull()
-            .defaultTo(sql`now()`)
-        )
-};
+export async function down(db: Kysely<any>): Promise<void> {
+    // TABLE: PRODUCT_SYNCS
+    await db.schema.dropTable("product_syncs").ifExists().execute()
+
+    // INDEX: ONE_ACTIVE_PRODUCT_SYNC
+    await db.schema.dropIndex("idx_one_active_product_sync").ifExists().execute();
+}

apps/api/src/database/types.d.ts

@@ -0,0 +1,28 @@
+/**
+ * This file was generated by kysely-codegen.
+ * Please do not edit it manually.
+ */
+
+import type { ColumnType } from "kysely";
+
+export type Generated<T> = T extends ColumnType<infer S, infer I, infer U>
+  ? ColumnType<S, I | undefined, U>
+  : ColumnType<T, T | undefined, T>;
+
+export type Int8 = ColumnType<string, bigint | number | string, bigint | number | string>;
+
+export type Timestamp = ColumnType<Date, Date | string, Date | string>;
+
+export interface ProductSyncs {
+  created_at: Generated<Timestamp>;
+  ended_at: Timestamp | null;
+  has_failed: Generated<boolean>;
+  id: Generated<Int8>;
+  printful_product_id_filter: number[] | null;
+  started_at: Timestamp | null;
+  syncing_printful_product_ids: Generated<number[]>;
+}
+
+export interface DB {
+  product_syncs: ProductSyncs;
+}