import {
  boolean,
  date,
  doublePrecision,
  index,
  pgTable,
  text,
  uuid,
  integer,
} from "drizzle-orm/pg-core";
import { createdAt, unitEnum } from "./_shared.js";
import { households } from "./households.js";
import { canonicalIngredients } from "./ingredients.js";
import { products } from "./products.js";

/** Kvitton (spec §12): lager + budget + prishistorik + matsvinnsvärde. */
export const receipts = pgTable(
  "receipts",
  {
    id: uuid("id").primaryKey().defaultRandom(),
    householdId: uuid("household_id")
      .notNull()
      .references(() => households.id, { onDelete: "cascade" }),
    storeName: text("store_name"),
    purchaseDate: date("purchase_date"),
    totalMinor: integer("total_minor"),
    discountMinor: integer("discount_minor"),
    imageUrl: text("image_url"),
    scanJobId: uuid("scan_job_id"),
    status: text("status").notNull().default("pending"),
    createdAt: createdAt(),
  },
  (t) => [index("receipts_household_idx").on(t.householdId, t.purchaseDate)],
);

export const receiptLines = pgTable(
  "receipt_lines",
  {
    id: uuid("id").primaryKey().defaultRandom(),
    receiptId: uuid("receipt_id")
      .notNull()
      .references(() => receipts.id, { onDelete: "cascade" }),
    rawText: text("raw_text").notNull(),
    normalizedName: text("normalized_name"),
    canonicalIngredientId: text("canonical_ingredient_id").references(
      () => canonicalIngredients.id,
    ),
    productId: uuid("product_id").references(() => products.id),
    quantity: doublePrecision("quantity"),
    unit: unitEnum("unit"),
    unitPriceMinor: integer("unit_price_minor"),
    totalPriceMinor: integer("total_price_minor"),
    confidence: doublePrecision("confidence").notNull().default(0),
    verifiedByUser: boolean("verified_by_user").notNull().default(false),
    addedToInventory: boolean("added_to_inventory").notNull().default(false),
  },
  (t) => [index("receipt_lines_receipt_idx").on(t.receiptId)],
);

/** Prishistorik per ingrediens/produkt – grund för budget och prognoser (spec §12, §26). */
export const priceObservations = pgTable(
  "price_observations",
  {
    id: uuid("id").primaryKey().defaultRandom(),
    canonicalIngredientId: text("canonical_ingredient_id").references(
      () => canonicalIngredients.id,
    ),
    productId: uuid("product_id").references(() => products.id),
    storeName: text("store_name"),
    priceMinor: integer("price_minor").notNull(),
    quantity: doublePrecision("quantity"),
    unit: unitEnum("unit"),
    pricePerKgMinor: integer("price_per_kg_minor"),
    observedAt: date("observed_at").notNull(),
    source: text("source").notNull().default("receipt"),
    createdAt: createdAt(),
  },
  (t) => [index("price_observations_ingredient_idx").on(t.canonicalIngredientId, t.observedAt)],
);