module Gitlab
  module Ci
    module Pipeline
      module Chain
        class Skip < Chain::Base
          SKIP_PATTERN = /\[(ci[ _-]skip|skip[ _-]ci)\]/i

          def perform!
            if skipped?
              @pipeline.skip if @command.save_incompleted
            end
          end

          def skipped?
            !@command.ignore_skip_ci && commit_message_skips_ci?
          end

          def break?
            skipped?
          end

          private

          def commit_message_skips_ci?
            return false unless @pipeline.git_commit_message

            @skipped ||= !!(@pipeline.git_commit_message =~ SKIP_PATTERN)
          end
        end
      end
    end
  end
end
