/**
 * Commercial bounded context, first slice: `resellers` — the operational
 * reseller/partner registry (eden.md §1.7). Pre-dates the "Programa de
 * Canais" approval workflow with public tokens described in eden.md §6 —
 * that workflow (client_registrations/reseller_registrations, public
 * approval tokens) is explicitly out of scope for this migration and
 * lands in its own later phase. This is just the simple operational CRUD
 * table eden.md §1.7 describes, already referenced by `quotes.reseller_id`
 * conceptually (quotes themselves aren't modeled yet either — Commercial
 * phase lands module by module).
 *
 * Also adds `users.reseller_id` (nullable) — how a user gets scoped to a
 * reseller, per eden.md §7 and the `scope=reseller` permission model
 * (docs/adr/0004-permission-model.md). Lives in this migration rather
 * than a separate one so the FK to `resellers(id)` can be added in the
 * same statement the table is created in, without a two-step migration.
 */

exports.shorthands = undefined;

exports.up = (pgm) => {
  pgm.sql(`
    CREATE TABLE resellers (
      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),
      name           TEXT NOT NULL,
      document       TEXT,
      contact_email  TEXT,
      active         BOOLEAN NOT NULL DEFAULT true
    );
    COMMENT ON TABLE resellers IS
      'Cadastro operacional de revenda — eden.md §1.7. document é CPF/CNPJ livre (sem CHECK de dígito no banco, validado na camada de aplicação, igual companies.cnpj). Leitura aberta a qualquer autenticado (usado em seletores, ex. Orçamentos); escrita restrita à permissão resellers:edit.';

    CREATE TRIGGER trg_resellers_updated_at BEFORE UPDATE ON resellers
      FOR EACH ROW EXECUTE FUNCTION set_updated_at();

    CREATE INDEX idx_resellers_active ON resellers(active);

    -- =====================================================================
    -- users.reseller_id — scopes a user to a reseller (eden.md §7,
    -- docs/adr/0004-permission-model.md scope=reseller)
    -- =====================================================================
    ALTER TABLE users ADD COLUMN reseller_id UUID REFERENCES resellers(id);
    COMMENT ON COLUMN users.reseller_id IS
      'Nullable — vincula o usuário a uma revenda (vendedor de revenda), escopando o que ele vê (eden.md §7). Atribuído via PATCH /v1/resellers/:id/assign-user, nunca aceito de campo vindo do cliente para decisão de autorização (docs/architecture.md, ADR-0004).';

    CREATE INDEX idx_users_reseller ON users(reseller_id);
  `);
};

exports.down = (pgm) => {
  pgm.sql(`
    DROP INDEX IF EXISTS idx_users_reseller;
    ALTER TABLE users DROP COLUMN IF EXISTS reseller_id;
    DROP TABLE IF EXISTS resellers;
  `);
};