feat(ADM-018): completed feature

project/migrations/016_orders.js

@@ -0,0 +1,58 @@
+/** Orders with item snapshots and explicit state machine. */
+
+/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
+export const up = (pgm) => {
+  pgm.sql(`
+    CREATE TABLE orders_orders (
+      id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+      user_id uuid NOT NULL,
+      idempotency_key text UNIQUE,
+      state text NOT NULL DEFAULT 'PENDING',
+      currency text NOT NULL DEFAULT 'EUR',
+      subtotal_cents integer NOT NULL DEFAULT 0,
+      discount_cents integer NOT NULL DEFAULT 0,
+      tax_cents integer NOT NULL DEFAULT 0,
+      total_cents integer NOT NULL DEFAULT 0,
+      created_at timestamptz NOT NULL DEFAULT now(),
+      updated_at timestamptz NOT NULL DEFAULT now(),
+      CONSTRAINT orders_orders_state_check CHECK (state IN (
+        'PENDING','AWAITING_PAYMENT','PAID','PROCESSING','SHIPPED','DELIVERED',
+        'CANCELLED','REFUNDED','PARTIALLY_REFUNDED'
+      )),
+      CONSTRAINT orders_orders_currency_check CHECK (currency = 'EUR'),
+      CONSTRAINT orders_orders_subtotal_non_negative CHECK (subtotal_cents >= 0),
+      CONSTRAINT orders_orders_discount_non_negative CHECK (discount_cents >= 0),
+      CONSTRAINT orders_orders_tax_non_negative CHECK (tax_cents >= 0),
+      CONSTRAINT orders_orders_total_non_negative CHECK (total_cents >= 0)
+    )
+  `);
+  pgm.sql('CREATE INDEX orders_orders_user_id_idx ON orders_orders (user_id)');
+
+  pgm.sql(`
+    CREATE TABLE orders_items (
+      id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+      order_id uuid NOT NULL REFERENCES orders_orders(id) ON DELETE CASCADE,
+      product_id uuid NOT NULL,
+      variant_id uuid NOT NULL,
+      sku text NOT NULL,
+      ean text,
+      name text NOT NULL,
+      unit_price_cents integer NOT NULL,
+      discount_cents integer NOT NULL DEFAULT 0,
+      tax_cents integer NOT NULL DEFAULT 0,
+      quantity integer NOT NULL,
+      created_at timestamptz NOT NULL DEFAULT now(),
+      CONSTRAINT orders_items_quantity_positive CHECK (quantity > 0),
+      CONSTRAINT orders_items_unit_price_non_negative CHECK (unit_price_cents >= 0),
+      CONSTRAINT orders_items_discount_non_negative CHECK (discount_cents >= 0),
+      CONSTRAINT orders_items_tax_non_negative CHECK (tax_cents >= 0)
+    )
+  `);
+  pgm.sql('CREATE INDEX orders_items_order_id_idx ON orders_items (order_id)');
+};
+
+/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
+export const down = (pgm) => {
+  pgm.sql('DROP TABLE IF EXISTS orders_items');
+  pgm.sql('DROP TABLE IF EXISTS orders_orders');
+};