codex/fix: inconsistent stock options and availability

internal/modules/inventory/product-warehouses/services/product_warehouse.service.go

@@ -71,6 +71,13 @@ func applyWarehouseSelectionFilter(db *gorm.DB, kandangID, locationID uint) *gor
 	}
 }
 
+func applyAvailableOnlyFilter(db *gorm.DB, availableOnly bool) *gorm.DB {
+	if !availableOnly {
+		return db
+	}
+	return db.Where("COALESCE(product_warehouses.qty, 0) > 0")
+}
+
 func (s productWarehouseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity.ProductWarehouse, int64, error) {
 	if err := s.Validate.Struct(params); err != nil {
 		return nil, 0, err
@@ -151,12 +158,31 @@ func (s productWarehouseService) GetAll(c *fiber.Ctx, params *validation.Query)
 			db = db.Where("product_id = ?", params.ProductId)
 		}
 
+		db = applyAvailableOnlyFilter(db, params.AvailableOnly)
+
 		db = applyWarehouseSelectionFilter(db, params.KandangId, params.LocationId)
 
 		if params.WarehouseId != 0 {
 			db = db.Where("warehouse_id = ?", params.WarehouseId)
 		}
 
+		if strings.TrimSpace(params.Search) != "" {
+			searchPattern := "%" + strings.TrimSpace(params.Search) + "%"
+			db = db.Where(
+				`(
+					EXISTS (
+						SELECT 1
+						FROM products p_search
+						WHERE p_search.id = product_warehouses.product_id
+						  AND p_search.name ILIKE ?
+					)
+					OR w_scope.name ILIKE ?
+				)`,
+				searchPattern,
+				searchPattern,
+			)
+		}
+
 		if len(marketingTypes) > 0 {
 			flagSet := make(map[string]struct{})
 			for _, t := range marketingTypes {

internal/modules/inventory/product-warehouses/services/product_warehouse.service_test.go

@@ -49,6 +49,20 @@ func TestApplyWarehouseSelectionFilterSupportsLocationOnlyQuery(t *testing.T) {
 	assertUintIDs(t, ids, []uint{1, 2, 3})
 }
 
+func TestApplyAvailableOnlyFilterRemovesZeroQtyRows(t *testing.T) {
+	db := setupProductWarehouseServiceTestDB(t)
+
+	var ids []uint
+	err := applyAvailableOnlyFilter(baseProductWarehouseSelectionQuery(db), true).
+		Order("product_warehouses.id").
+		Pluck("product_warehouses.id", &ids).Error
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	assertUintIDs(t, ids, []uint{1, 2, 4})
+}
+
 func setupProductWarehouseServiceTestDB(t *testing.T) *gorm.DB {
 	t.Helper()
 
@@ -67,18 +81,19 @@ func setupProductWarehouseServiceTestDB(t *testing.T) *gorm.DB {
 		)`,
 		`CREATE TABLE product_warehouses (
 			id INTEGER PRIMARY KEY,
-			warehouse_id INTEGER NOT NULL
+			warehouse_id INTEGER NOT NULL,
+			qty NUMERIC NULL
 		)`,
 		`INSERT INTO warehouses (id, type, location_id, kandang_id, deleted_at) VALUES
 			(1, 'KANDANG', 101, 11, NULL),
 			(2, 'LOKASI', 101, NULL, NULL),
 			(3, 'KANDANG', 101, 12, NULL),
 			(4, 'LOKASI', 102, NULL, NULL)`,
-		`INSERT INTO product_warehouses (id, warehouse_id) VALUES
-			(1, 1),
-			(2, 2),
-			(3, 3),
-			(4, 4)`,
+		`INSERT INTO product_warehouses (id, warehouse_id, qty) VALUES
+			(1, 1, 10),
+			(2, 2, 20),
+			(3, 3, 0),
+			(4, 4, 15)`,
 	}
 
 	for _, stmt := range statements {