job_arguments.rb

module RuboCop
  module Cops
    module Jobs
      class Arguments < RuboCop::Cop::Cop
        MAX_JOB_ARGUMENTS = 3
        MSG = 'Replace %<args_count>d arguments with a single Dry::Struct'.freeze

        def on_args(node)
          return unless perform_method?(node.parent)

          args_count = node.children.size

          return if args_count <= MAX_JOB_ARGUMENTS

          add_offense(node.parent, message: MSG % { args_count: args_count })
        end

        private

        def_node_matcher :perform_method?, <<~PATTERN
          (def :perform (args ...) ...)
        PATTERN
      end
    end
  end
end