fix on stocks on store catalogue

repositories/productPublishRepository.go

@@ -3,6 +3,8 @@ package repositories
 import (
 	"fmt"
 
+	"nearle/models"
+
 	"gorm.io/gorm"
 )
 
@@ -124,3 +126,44 @@ func (r *productRepository) UnpublishProduct(tenantID, productID int) (int, erro
 		tenantID, productID)
 	return int(res.RowsAffected), res.Error
 }
+
+// PublishPricedLocations releases the rows an import has just created, at the
+// one branch it imported into.
+//
+// The publish gate exists to stop an unpriced product reaching a till that
+// would ring it up at zero. An import from a spreadsheet CARRIES the price — it
+// is on the row this writes — so the gate's condition is already met, and
+// leaving these rows unpublished asks somebody to click a button that can only
+// answer "yes" seventeen times.
+//
+// It was not a harmless extra step. Nothing in the backend filters on
+// `publishedat`, so the products were already on sale in the customer app while
+// the merchant's own store catalogue — the one screen that does read it —
+// showed nothing. The shopkeeper could not see what their shoppers could buy.
+//
+// Three things keep this honest:
+//
+//   - `price > 0` is checked in SQL, not by the caller. A row that somehow
+//     arrived unpriced stays unpublished, which is the rule the gate is for.
+//   - COALESCE keeps the first release date, so re-importing does not rewrite
+//     the history of a product that has been on sale for months.
+//   - Only the named branch. PublishProduct releases to every outlet a tenant
+//     runs and that is right for a deliberate release; an import names one
+//     branch, and quietly stocking the others would put products in shops
+//     nobody chose.
+func (r *productRepository) PublishPricedLocations(refs []models.ProductLocationRef) error {
+	if len(refs) == 0 {
+		return nil
+	}
+	for _, ref := range refs {
+		if err := r.db.Exec(`
+			UPDATE productlocations
+			SET publishedat = COALESCE(publishedat, NOW()), updated = NOW()
+			WHERE tenantid = ? AND locationid = ? AND productid = ?
+			  AND COALESCE(price, 0) > 0`,
+			ref.Tenantid, ref.Locationid, ref.Productid).Error; err != nil {
+			return err
+		}
+	}
+	return nil
+}