class Inspec::Test

def describe_chain
  return nil if @qualifier.empty?
  resource = (@qualifier.length > 1) ? @qualifier[0..-2] : [@qualifier[0]]
  res = resource.map { |q| ruby_qualifier(q) }.join('.')
  xres = nil
  if @qualifier.length > 1
    last = @qualifier[-1]
    last_call = last.is_a?(Array) ? last[0].to_s : ''
    if last.length == 1 && last_call !~ /^to_.$/ && !last_call.include?('[') && !last_call.empty?
      # this will go in its()
      xres = last_call
    else
      res += '.' + ruby_qualifier(last)
    end
  end
  [res, xres]
end

def initialize
  @qualifier = []
  @negated = false
  @variables = []
end

def negate!
  @negated = !@negated
end

def rb_describe
  vars = variables.map(&:to_ruby).join("\n")
  vars += "\n" unless vars.empty?
  res, xtra = describe_chain
  itsy = xtra.nil? ? 'it' : 'its(' + xtra.to_s.inspect + ')'
  naughty = @negated ? '_not' : ''
  xpect = defined?(@expectation) ? expectation.inspect : ''
  if matcher == 'match'
    # without this, xpect values like / \/zones\// will not be parsed properly
    xpect = "(#{xpect})"
  elsif xpect != ''
    xpect = ' ' + xpect
  end
  format("%sdescribe %s do\n  %s { should%s %s%s }\nend",
         vars, res, itsy, naughty, matcher, xpect)
end

def rb_skip
  dc = describe_chain
  obj = dc.nil? ? skip.inspect : dc[0]
  format("describe %s do\n  skip %s\nend", obj, skip.inspect)
end

def remove_expectation
  remove_instance_variable(:@expectation)
end

def resource
  @resource ||=
    if qualifier.empty? || qualifier[0].empty? || qualifier[0][0].empty?
      nil
    else
      qualifier[0][0]
    end
end

def to_hash
  { qualifier: qualifier, matcher: matcher, expectation: expectation, skip: skip, negated: negated }
end

def to_ruby
  return rb_skip if !skip.nil?
  rb_describe
end