# frozen_string_literal: true

module ActiveRecord
  module ConnectionAdapters
    module SQLServer
      class SchemaDumper < ConnectionAdapters::SchemaDumper

        SQLSEVER_NO_LIMIT_TYPES = [
          'text',
          'ntext',
          'varchar(max)',
          'nvarchar(max)',
          'varbinary(max)'
        ].freeze

        private

        def explicit_primary_key_default?(column)
          column.is_primary? && !column.is_identity?
        end

        def schema_limit(column)
          return if SQLSEVER_NO_LIMIT_TYPES.include?(column.sql_type)
          super
        end

        def schema_collation(column)
          return unless column.collation
          column.collation if column.collation != @connection.collation
        end

        def default_primary_key?(column)
          super && column.is_primary? && column.is_identity?
        end

      end
    end
  end
end