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src/services/database/migrations/002-order-invitation-and-seed.ts

@@ -0,0 +1,74 @@
+import { Kysely, sql } from "kysely";
+
+import type { Database } from "../tables.js";
+
+/**
+ * Adds invitation tracking to orders and seeds sample catalog items.
+ */
+export async function up(db: Kysely<Database>): Promise<void> {
+  await db.schema
+    .alterTable("orders")
+    .addColumn("invitation_identifier", "text")
+    .execute();
+
+  await db.schema
+    .createIndex("idx_orders_invitation_identifier")
+    .on("orders")
+    .column("invitation_identifier")
+    .execute();
+
+  const seedItems = [
+    {
+      name: "Cola",
+      description: "Classic cola drink",
+      price: 1000,
+      quantity: 10,
+      image: "",
+    },
+    {
+      name: "Chips",
+      description: "Salted potato chips",
+      price: 1500,
+      quantity: 8,
+      image: "",
+    },
+    {
+      name: "Water",
+      description: "Still spring water",
+      price: 800,
+      quantity: 15,
+      image: "",
+    },
+    {
+      name: "Chocolate Bar",
+      description: "Milk chocolate bar",
+      price: 1200,
+      quantity: 12,
+      image: "",
+    },
+  ];
+
+  for (const item of seedItems) {
+    const existing = await db
+      .selectFrom("items")
+      .select("id")
+      .where("name", "=", item.name)
+      .executeTakeFirst();
+
+    if (!existing) {
+      await db.insertInto("items").values(item).execute();
+    }
+  }
+}
+
+/**
+ * Removes invitation column and seed is left in place.
+ */
+export async function down(db: Kysely<Database>): Promise<void> {
+  await sql`DROP INDEX IF EXISTS idx_orders_invitation_identifier`.execute(db);
+
+  await db.schema
+    .alterTable("orders")
+    .dropColumn("invitation_identifier")
+    .execute();
+}