Groceries: private tracker at /trackers/groceries (stores, products, price history per store, favorites, cheapest highlighted); seeded AH, Jumbo, Lidl, Plus

src/lib/server/db/schema/groceries.ts

@@ -0,0 +1,97 @@
+import { sql } from 'drizzle-orm';
+import { boolean, check, index, integer, numeric, text, uniqueIndex } from 'drizzle-orm/pg-core';
+import { groceriesSchema } from './schemas';
+import { id, timestamps, timestamptz } from './helpers';
+
+// Private grocery tracker (owner only, see requireOwner): the products Stan buys, which
+// ones are favourites, and what they cost at each supermarket over time.
+// Prices are append-only observations in cents, so price history and "cheapest now" both
+// come from the same table. The latest observation per (product, store) is the current price.
+
+export const GROCERY_UNITS = ['piece', 'kg', 'l'] as const;
+export type GroceryUnit = (typeof GROCERY_UNITS)[number];
+
+/** Supermarkets (Albert Heijn, Jumbo, Lidl, Plus, …). `slug` is the stable key for imports. */
+export const groceryStores = groceriesSchema.table(
+	'stores',
+	{
+		id: id(),
+		slug: text('slug').notNull(),
+		name: text('name').notNull(),
+		website: text('website'),
+		color: text('color'),
+		sortOrder: integer('sort_order').notNull().default(0),
+		archivedAt: timestamptz('archived_at'),
+		...timestamps
+	},
+	(t) => [
+		uniqueIndex('stores_slug_key').on(t.slug),
+		check('stores_slug_check', sql`${t.slug} ~ '^[a-z0-9][a-z0-9-]{0,62}$'`),
+		check('stores_name_check', sql`length(btrim(${t.name})) > 0`)
+	]
+);
+
+/**
+ * A product as Stan thinks of it ("Halfvolle melk 1 L"), not one store's SKU: the same
+ * product can be priced at several stores. `unit_amount` + `unit` (e.g. 1.5 + 'l') make
+ * unit prices comparable across pack sizes.
+ */
+export const groceryProducts = groceriesSchema.table(
+	'products',
+	{
+		id: id(),
+		name: text('name').notNull(),
+		brand: text('brand'),
+		category: text('category'),
+		size: text('size'), // as printed, e.g. "6 x 1 L"
+		unitAmount: numeric('unit_amount', { precision: 10, scale: 3, mode: 'number' }),
+		unit: text('unit').$type<GroceryUnit>(),
+		favorite: boolean('favorite').notNull().default(false),
+		notes: text('notes'),
+		archivedAt: timestamptz('archived_at'),
+		...timestamps
+	},
+	(t) => [
+		uniqueIndex('products_name_brand_key').on(
+			sql`lower(${t.name})`,
+			sql`lower(coalesce(${t.brand}, ''))`
+		),
+		index('products_category_idx').on(t.category),
+		check('products_name_check', sql`length(btrim(${t.name})) > 0`),
+		check('products_unit_check', sql`${t.unit} IS NULL OR ${t.unit} IN ('piece','kg','l')`),
+		check('products_unit_amount_check', sql`${t.unitAmount} IS NULL OR ${t.unitAmount} > 0`)
+	]
+);
+
+/** One observed price of a product at a store (manual entry or a later import). */
+export const groceryPrices = groceriesSchema.table(
+	'prices',
+	{
+		id: id(),
+		productId: integer('product_id')
+			.notNull()
+			.references(() => groceryProducts.id, { onDelete: 'cascade' }),
+		storeId: integer('store_id')
+			.notNull()
+			.references(() => groceryStores.id, { onDelete: 'cascade' }),
+		priceCents: integer('price_cents').notNull(),
+		unitPriceCents: integer('unit_price_cents'), // per product.unit, if known
+		promo: boolean('promo').notNull().default(false), // bonus / aanbieding price
+		observedAt: timestamptz('observed_at').notNull().defaultNow(),
+		source: text('source').notNull().default('manual'), // 'manual', 'ah-api', 'jumbo-api', …
+		storeProductId: text('store_product_id'), // e.g. AH webshopId, Jumbo SKU
+		url: text('url'),
+		notes: text('notes'),
+		...timestamps
+	},
+	(t) => [
+		index('prices_product_store_idx').on(t.productId, t.storeId, t.observedAt),
+		index('prices_store_idx').on(t.storeId),
+		check('prices_price_check', sql`${t.priceCents} >= 0`),
+		check('prices_unit_price_check', sql`${t.unitPriceCents} IS NULL OR ${t.unitPriceCents} >= 0`)
+	]
+);
+
+export type GroceryStore = typeof groceryStores.$inferSelect;
+export type GroceryProduct = typeof groceryProducts.$inferSelect;
+export type GroceryPrice = typeof groceryPrices.$inferSelect;

src/lib/server/db/schema/index.ts

@@ -15,3 +15,4 @@ export * from './house-tracker';
 export * from './health';
 export * from './books';
 export * from './tasks';
+export * from './groceries';

src/lib/server/db/schema/schemas.ts

@@ -15,3 +15,4 @@ export const metaSchema = pgSchema('meta');
 export const healthSchema = pgSchema('health');
 export const booksSchema = pgSchema('books');
 export const tasksSchema = pgSchema('tasks');
+export const groceriesSchema = pgSchema('groceries');