From 09f0be46be142ca61bdcd8bccf479ba221456591 Mon Sep 17 00:00:00 2001
From: Nat Dean-Lewis <nat.dean-lewis@softwire.com>
Date: Fri, 6 Feb 2026 09:59:43 +0000
Subject: [PATCH] CLDC-4141: use FIELDS to check max_columns

---
 app/services/bulk_upload/lettings/year2026/csv_parser.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/services/bulk_upload/lettings/year2026/csv_parser.rb b/app/services/bulk_upload/lettings/year2026/csv_parser.rb
index cb57df8c0..68a0b72ce 100644
--- a/app/services/bulk_upload/lettings/year2026/csv_parser.rb
+++ b/app/services/bulk_upload/lettings/year2026/csv_parser.rb
@@ -60,6 +60,14 @@ class BulkUpload::Lettings::Year2026::CsvParser
     valid_field_numbers_count == FIELDS
   end
 
+  def too_many_columns?
+    return if with_headers?
+
+    max_columns_count = body_rows.map(&:size).max - col_offset
+
+    max_columns_count > FIELDS
+  end
+
   def wrong_template_for_year?
     collection_start_year_for_date(first_record_start_date) != FORM_YEAR
   rescue Date::Error