class Rubocop::Cop::Style::SingleLineBlockParams

def args_match?(method_name, args)
  actual_args = args.flat_map { |a| a.to_a }
  actual_args == target_args(method_name).map(&:to_sym)
end

def message(method_name)
  args = target_args(method_name).join(', ')
  "Name `#{method_name}` block params |#{args}|."
end

def method_names
  methods.map { |e| e.keys.first.to_sym }
end

def methods
  cop_config['Methods']
end

def on_block(node)
  # we care only for single line blocks
  return unless Util.block_length(node) == 0
  method_node, args_node, _body_node = *node
  receiver, method_name, _method_args = *method_node
  # discard other scenarios
  return unless receiver
  return unless method_names.include?(method_name)
  # discard cases with argument destructuring
  args = *args_node
  return true unless args.all? { |n| n.type == :arg }
  unless args_match?(method_name, args)
    add_offense(args_node, :expression, message(method_name))
  end
end

def target_args(method_name)
  method_name = method_name.to_s
  method_hash = methods.find { |m| m.keys.first == method_name }
  method_hash[method_name]
end