-- migrate:up

-- Nueva tabla para mapeos alias -> múltiples productos con score
create table if not exists alias_product_mappings (
  tenant_id uuid not null references tenants(id) on delete cascade,
  alias text not null,
  woo_product_id integer not null,
  score numeric(4,2) not null default 1.0,
  created_at timestamptz not null default now(),
  primary key (tenant_id, alias, woo_product_id)
);

create index if not exists alias_product_mappings_alias_idx 
  on alias_product_mappings(tenant_id, alias);

-- Migrar datos existentes: copiar woo_product_id de product_aliases
insert into alias_product_mappings (tenant_id, alias, woo_product_id, score)
select tenant_id, alias, woo_product_id, coalesce(boost, 1.0)
from product_aliases
where woo_product_id is not null
on conflict (tenant_id, alias, woo_product_id) do nothing;

-- migrate:down
drop table if exists alias_product_mappings;