require_relative 'command_factory'

module Dockerun
  module Cli
    class DSLProxy
      include DSL
    end

    class DeleteImage
      include TR::CondUtils

      def initialize
        @proxy = DSLProxy.new
      end

      def start(root)
        @proxy.set_exec_root(root)
        begin
          pmt.puts " Dockerun version #{Dockerun::VERSION}".yellow
          pmt.puts " Operational : Delete Image"
          delete_image
        rescue TTY::Reader::InputInterrupt
        end
      end

      def delete_image
        selSpec = CliEngine.select_spec(@proxy.exec_root)
        cont = File.read(selSpec)
        @proxy.set_dry_run_mode
        @proxy.instance_eval(cont)

        res = cf.find_image(@proxy.image_name).run
        if res.success?
          if not_empty?(res.output_lines)

            skip = pmt.no?(" Delete image named '#{@proxy.image_name}'?")
            if not skip
              res = cf.find_container_names_by_image_name(@proxy.image_name, all_containers: true).run
              raise Error, "Failed to extract container name by image name '#{@proxy.image_name}'" if not res.success?

              if not_empty?(res.output_lines)
                cont = []
                cnt = 0
                res.output_lines.each do |l|
                  cont << " #{cnt += 1}. #{l}"
                end
                skip = pmt.no?(" All the containers shall be deleted prior to image '#{@proxy.image_name}' deletion. Proceed?\n#{cont.join("\n")}")
                if not skip
                  res.output_lines.each do |ci|
                    cf.stop_container(ci).run
                    cf.delete_container(ci).run
                  end

                  res = cf.delete_image(@proxy.image_name).run
                  if res.success?
                    pmt.puts " Image '#{@proxy.image_name}' deleted".green
                  else
                    raise Error, " Image '#{@proxy.image_name}' deletion failed. Error was : #{res.err_lines.join("\n")}"
                  end

                else
                  pmt.puts " Delete of image '#{@proxy.image_name}' aborted".yellow
                end

              else
                res = cf.delete_image(@proxy.image_name).run
                if res.success?
                  pmt.puts " Image '#{@proxy.image_name}' deleted".green
                else
                  raise Error, " Image '#{@proxy.image_name}' deletion failed. Error was : #{res.err_lines.join("\n")}"
                end

              end

            else
              pmt.puts " Delete of image '#{@proxy.image_name}' aborted".yellow

            end

          else
            pmt.puts " Image '#{@proxy.image_name}' does not exist".green
          end

        else
          pmt.puts " Failed to find image '#{@proxy.image_name}'. Error was : #{res.err_lines.join("\n")}"
        end
      end

      def pmt
        CliEngine.pmt
      end

      def cf
        if @_cf.nil?
          @_cf = CommandFactory.new
        end
        @_cf
      end

    end
  end
end