Permet de modifier et supprimer les tarifs

Refs #24

app/Services/PricingService.php

@@ -54,6 +54,19 @@ final class PricingService
         }
         return (int) $rule[$sterilized ? 'fee_after_sterilization' : 'fee_before_sterilization'];
     }
+
+    public static function deleteTariff(int $id): ?string
+    {
+        $db = DB::pdo();
+        $stmt = $db->prepare('SELECT label FROM clinic_tariffs WHERE id=:id');
+        $stmt->execute([':id' => $id]);
+        $label = $stmt->fetchColumn();
+        if ($label === false) {
+            return null;
+        }
+        $db->prepare('DELETE FROM clinic_tariffs WHERE id=:id')->execute([':id' => $id]);
+        return (string) $label;
+    }
     public static function tariffs(bool $active = false): array
     {
         $w = $active ? 'WHERE ct.active=1 AND dc.deleted_at IS NULL' : '';