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-rw-r--r--app/validators/admin_import_validator.rb19
1 files changed, 19 insertions, 0 deletions
diff --git a/app/validators/admin_import_validator.rb b/app/validators/admin_import_validator.rb
new file mode 100644
index 000000000..338ceb3a7
--- /dev/null
+++ b/app/validators/admin_import_validator.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AdminImportValidator < ActiveModel::Validator
+  FIRST_HEADER = '#domain'
+
+  def validate(import)
+    return if import.type.blank? || import.data.blank?
+
+    # We parse because newlines could be part of individual rows. This
+    # runs on create so we should be reading the local file here before
+    # it is uploaded to object storage or moved anywhere...
+    csv_data = CSV.parse(import.data.queued_for_write[:original].read)
+
+    row_count  = csv_data.size
+    row_count -= 1 if csv_data.first&.first == FIRST_HEADER
+
+    import.errors.add(:data, I18n.t('imports.errors.over_rows_processing_limit', count: Admin::DomainBlocksController::ROWS_PROCESSING_LIMIT)) if row_count > Admin::DomainBlocksController::ROWS_PROCESSING_LIMIT
+  end
+end