productos, equivalencias, cross-sell y cantidades

db/migrations/20260119100000_reco_rule_items.sql

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+-- migrate:up
+
+-- Nueva tabla para items de reglas de recomendación con qty/unit
+create table if not exists reco_rule_items (
+  id bigserial primary key,
+  rule_id bigint not null references product_reco_rules(id) on delete cascade,
+  woo_product_id integer not null,
+  qty_per_person numeric(6,3),  -- ej: 0.200 = 200g por persona
+  unit text,                     -- kg | g | unidad
+  reason text,                   -- razón opcional (ej: "base del asado")
+  display_order integer not null default 0,
+  unique (rule_id, woo_product_id)
+);
+
+create index if not exists reco_rule_items_rule_idx on reco_rule_items(rule_id);
+
+-- Agregar tipo de regla y evento trigger a product_reco_rules
+alter table product_reco_rules
+  add column if not exists rule_type text not null default 'crosssell',
+  add column if not exists trigger_event text;
+
+-- Índice para búsqueda por tipo y evento
+create index if not exists product_reco_rules_type_event_idx 
+  on product_reco_rules(tenant_id, rule_type, trigger_event) 
+  where active = true;
+
+-- Migrar datos existentes: copiar recommended_product_ids a reco_rule_items
+insert into reco_rule_items (rule_id, woo_product_id, display_order)
+select r.id, unnest(r.recommended_product_ids), row_number() over (partition by r.id)
+from product_reco_rules r
+where array_length(r.recommended_product_ids, 1) > 0
+on conflict (rule_id, woo_product_id) do nothing;
+
+-- migrate:down
+drop index if exists product_reco_rules_type_event_idx;
+alter table product_reco_rules
+  drop column if exists rule_type,
+  drop column if exists trigger_event;
+drop table if exists reco_rule_items;