skylerto/litterbox

module Litterbox
  # CLI Command operations
  class Command
    attr_accessor :stdout, :stderr, :process
    def initialize(cmd, log = ENV['LITTERBOX_LOG'])
      @cmd = cmd
      @cmd = "sudo #{@cmd}" if ENV['USE_SUDO']
      @stdout = ''
      @stderr = ''
      @log = log
    end

    def run_command
      Open3.popen3(@cmd) do |_, out, err, thr|
        capture_stderr err
        capture_stdout out
        @process = thr.value
        return @stdout, @stderr, @process
      end
    end

    private

    def capture_stderr(err)
      while (line = err.gets)
        @stderr << line unless line.nil?
        puts(line) if @log
      end
    end

    def capture_stdout(out)
      while (lines = out.gets)
        @stdout << lines unless lines.nil?
        puts(lines) if @log
      end
    end
  end
end