class Quickbooks::Util::QueryBuilder

def clause(field, operator, value)
  # replace with an escaped backslash
  escape_single_quotes = -> field { field.to_s.gsub("'", "\\\\'") }
  value = case value
          when DateTime, Time
            value.iso8601
          when Date
            value.strftime('%Y-%m-%d')
          when Array
            value = value.map(&escape_single_quotes)
          when true, false
            value
          else
            value = escape_single_quotes.call(value)
          end
  if operator.downcase == 'in' && value.is_a?(Array)
    value = value.map { |v| "#{VALUE_QUOTE}#{v}#{VALUE_QUOTE}" }
    "#{field} #{operator} (#{value.join(', ')})"
  elsif value == true || value == false
    "#{field} #{operator} #{value}"
  else
    "#{field} #{operator} #{VALUE_QUOTE}#{value}#{VALUE_QUOTE}"
  end
end

def initialize
end