/**
 * Commercial bounded context, first slice: products (sellable catalog
 * items) — Master Prompt §6.3, eden.md §2 §1.1. MVP scope only: the shape
 * below ports the legacy `products` table's core identity/pricing/flag
 * columns faithfully (product_code sequence, the 5 fixed price tiers,
 * impl_unit_price), but deliberately leaves out service_type/metered/
 * tariff_rates/ixc_product_code — those are legacy telecom-billing
 * specifics that belong to a later phase, not invented here. `product_type`
 * is free text for now (no CHECK) since the enum of types isn't finalized;
 * tightening it to a CHECK/lookup table is future work once Quotes needs
 * to branch behavior on it.
 *
 * Quotes/pricing-tier selection logic is explicitly out of scope here —
 * this migration only stores the data, it computes nothing.
 */

exports.shorthands = undefined;

exports.up = (pgm) => {
  pgm.sql(`
    CREATE SEQUENCE products_product_code_seq START 1;

    CREATE TABLE products (
      id                 UUID PRIMARY KEY DEFAULT gen_random_uuid(),
      created_at         TIMESTAMPTZ NOT NULL DEFAULT now(),
      updated_at         TIMESTAMPTZ NOT NULL DEFAULT now(),
      created_by         UUID REFERENCES users(id),
      product_code       INTEGER NOT NULL UNIQUE DEFAULT nextval('products_product_code_seq'),
      name               TEXT NOT NULL,
      description        TEXT,
      product_type       TEXT NOT NULL,
      product_group      TEXT,
      product_subgroup   TEXT,
      brand              TEXT,
      unit               TEXT NOT NULL DEFAULT 'unidade',
      active             BOOLEAN NOT NULL DEFAULT true,
      discontinued       BOOLEAN NOT NULL DEFAULT false,
      tracks_stock       BOOLEAN NOT NULL DEFAULT false,
      tracks_serial      BOOLEAN NOT NULL DEFAULT false,
      tracks_asset_tag   BOOLEAN NOT NULL DEFAULT false,
      tracks_mac         BOOLEAN NOT NULL DEFAULT false,
      price_0            NUMERIC(12,2),
      price_12           NUMERIC(12,2),
      price_24           NUMERIC(12,2),
      price_36           NUMERIC(12,2),
      price_48           NUMERIC(12,2),
      impl_unit_price    NUMERIC(12,2) NOT NULL DEFAULT 0
    );
    COMMENT ON TABLE products IS
      'Catálogo de produtos vendáveis — eden.md §2 §1.1, Master Prompt §6.3. product_code é a sequência legada (distinta do UUID); price_0/12/24/36/48 são as 5 faixas fixas de preço por período de fidelidade, não uma tabela relacionada. Leitura aberta a qualquer autenticado (catálogo precisa ser navegável por qualquer vendedor); escrita restrita à permissão products:edit.';
    COMMENT ON COLUMN products.impl_unit_price IS
      'Valor de implantação por unidade, multiplicado pela quantidade do item na oferta (fase futura — Quotes). NUMERIC sempre, nunca float.';

    CREATE TRIGGER trg_products_updated_at BEFORE UPDATE ON products
      FOR EACH ROW EXECUTE FUNCTION set_updated_at();

    CREATE INDEX idx_products_active ON products(active);

    ALTER SEQUENCE products_product_code_seq OWNED BY products.product_code;
  `);
};

exports.down = (pgm) => {
  pgm.sql(`
    DROP TABLE IF EXISTS products;
    DROP SEQUENCE IF EXISTS products_product_code_seq;
  `);
};