add-on-workflow.rb

# File:
#      include/add-on/add-on-workflow.ycp
#
# Module:
#      System installation
#
# Summary:
#      Add-on product installation workflow
#
# Authors:
#      Jiri Srain <jsrain@suse.cz>
#  Lukas Ocilka <locilka@suse.cz>
#
#

require "y2packager/medium_type"
require "y2packager/resolvable"
require "ui/ui_extension_checker"

module Yast
  module AddOnAddOnWorkflowInclude
    include Yast::Logger

    # remember that the Full medium add-ons have been selected by user
    @@media_addons_selected = false

    def initialize_add_on_add_on_workflow(include_target)
      Yast.import "UI"
      Yast.import "Pkg"

      textdomain "add-on"

      Yast.import "AddOnProduct"
      Yast.import "WorkflowManager"
      Yast.import "Linuxrc"
      Yast.import "InstURL"
      Yast.import "Mode"
      Yast.import "Popup"
      Yast.import "Report"
      Yast.import "Sequencer"
      Yast.import "SourceDialogs"
      Yast.import "SourceManager"
      Yast.import "PackageSystem"
      Yast.import "ProductProfile"
      Yast.import "Stage"
      Yast.import "Wizard"
      Yast.import "Confirm"
      Yast.import "GetInstArgs"
      Yast.import "Installation"
      Yast.import "PackageCallbacks"
      Yast.import "PackagesUI"
      Yast.import "Packages"

      Yast.include include_target, "packager/inst_source_dialogs.rb"
      Yast.include include_target, "packager/repositories_include.rb"
      Yast.include include_target, "add-on/misc.rb"

      # Used for adding sources
      @createResult = :again

      @new_addon_name = ""

      @product_infos = {}

      # track the added repositories, using AddOnProduct.src_id does not work
      # for multiple repository medium
      # Arry<Fixnum>
      @added_repos = []
    end

    # Initialize current inst. sources
    def Read
      Pkg.SourceStartManager(true)
      :next
    end

    # Write (changed) inst. sources
    def Write
      Pkg.SourceSaveAll
      :next
    end

    # used Add-Ons are stored in AddOnProduct::add_on_products
    # bnc #393620
    def AddAddOnToStore(src_id)
      if src_id.nil?
        log.error("Wrong src_id: #{src_id}")
        return
      end

      # BNC #450274
      # Prevent from adding one product twice
      matching_product = AddOnProduct.add_on_products.find do |product|
        product["media"] == src_id
      end

      if matching_product
        log.info("Product already added: #{matching_product}")
        return
      end

      source_data = Pkg.SourceGeneralData(src_id)

      AddOnProduct.add_on_products <<
        {
          "media"       => src_id,
          # table cell
          "product"     => source_data["name"],
          "media_url"   => source_data["url"],
          "product_dir" => source_data["product_dir"]
        }
    end

    # Run dialog for selecting the media
    # @return [Symbol] for wizard sequencer
    def MediaSelect
      aliases = {
        # true: Skip "type" if it comes from :back and call registartion instead.
        # bsc#1160501
        "type"  => [-> { media_type_selection }, true],
        "edit"  => -> { EditDialog() },
        "store" => -> { StoreSource() }
      }

      sources_before = Pkg.SourceGetCurrent(false)
      Builtins.y2milestone("Sources before adding new one: %1", sources_before)

      sequence = {
        "ws_start" => "type",
        "type"     => {
          next:   "edit",
          # bnc #392083
          finish: "store",
          abort:  :abort,
          skip:   :skip
        },
        "edit"     => {
          next:   "store",
          # bnc #392083
          finish: "store",
          abort:  :abort
        },
        "store"    => {
          next:   :next,
          # bnc #392083
          finish: :next,
          abort:  :abort
        }
      }

      Builtins.y2milestone("Starting repository sequence")
      ret = Sequencer.Run(aliases, sequence)
      log.info "Repository sequence result: #{ret}"

      # activate the changes
      activate_addon_changes(sources_before) if ret == :next

      AddOnProduct.last_ret = ret
      Builtins.y2milestone("MediaSelect Dialog ret: %1", ret)
      ret
    end

    # bugzilla #304659
    # Sets the Add-On's product name
    #
    # @param [Fixnum] src_id (source ID)
    def SetAddOnProductName(src_id)
      @new_addon_name = ""

      if src_id.nil?
        Builtins.y2error("Cannot set name, no ID!")
        return
      end

      @new_addon_name = SourceDialogs.GetRepoName

      # no name to change to
      if @new_addon_name.nil? || @new_addon_name == ""
        Builtins.y2milestone("No special name set")
        return
      end

      new_addon_set = [{ "SrcId" => src_id, "name" => @new_addon_name }]
      result = Pkg.SourceEditSet(new_addon_set)

      Builtins.y2milestone(
        "Adjusting Add-On: %1 returned: %2",
        new_addon_set,
        result
      )

      # do not use it next time
      SourceDialogs.SetRepoName("")

      nil
    end

    # Run dialog for selecting the catalog on the media (if more than one present)
    # @return [Symbol] for wizard sequencer
    def CatalogSelect
      sources = deep_copy(SourceManager.newSources)
      Builtins.y2milestone("New sources: %1", sources)

      if Builtins.size(sources) == 0
        # error report
        Report.Error(_("No software repository found on medium."))
        Builtins.y2milestone("CatalogSelect Dialog ret: %1", :back)
        return :back
      end

      if Builtins.size(sources) == 1
        if AddOnProduct.last_ret != :next
          Builtins.y2milestone("Deleting source %1", Ops.get(sources, 0, 0))
          Pkg.SourceDelete(Ops.get(sources, 0, 0))

          Builtins.y2milestone(
            "CatalogSelect Dialog ret: %1",
            AddOnProduct.last_ret
          )
          return AddOnProduct.last_ret
        end

        # busy message
        UI.OpenDialog(
          Label(Id(:add_on_popup_id), _("Initializing new source..."))
        )
        src_id = Ops.get(SourceManager.newSources, 0, 0)

        # BNC #481828: Using LABEL from content file as a repository name
        Packages.AdjustSourcePropertiesAccordingToProduct(src_id)

        # a little hack because of packager leaving
        # windows open...
        if UI.WidgetExists(:add_on_popup_id)
          UI.CloseDialog
        elsif UI.WidgetExists(:contents)
          Builtins.y2warning("Already in base dialog!")
        else
          Builtins.y2error("Error in packager, closing current dialog!")
          until UI.WidgetExists(:contents)
            Builtins.y2milestone("Calling UI::CloseDialog")
            UI.CloseDialog
          end
        end

        AddOnProduct.src_id = src_id
        SourceManager.newSources = [src_id]
        Builtins.y2milestone("Only one source available - skipping dialog")

        Builtins.y2milestone(
          "CatalogSelect Dialog ret: %1",
          AddOnProduct.last_ret
        )
        return AddOnProduct.last_ret
      end

      Builtins.y2milestone("Running catalog select dialog")
      catalogs = Builtins.maplist(sources) do |src|
        data = Pkg.SourceGeneralData(src)
        # placeholder for unknown directory
        dir = Ops.get_locale(data, "product_dir", _("Unknown"))
        dir = "/" if dir == ""
        Item(
          Id(src),
          Builtins.sformat(
            _("URL: %1, Directory: %2"),
            Ops.get_locale(
              # place holder for unknown URL
              data,
              "url",
              _("Unknown")
            ),
            dir
          )
        )
      end

      # dialog caption
      title = _("Software Repository Selection")
      # help text
      help_text = _(
        "<p><big><b>Software Repository Selection</b></big><br>\n" \
          "Multiple repositories were found on the selected medium.\n" \
          "Select the repository to use.</p>\n"
      )

      contents = HBox(
        HSpacing(4),
        VBox(
          VSpacing(2),
          SelectionBox(Id(:catalogs), _("Repositories &Found"), catalogs),
          VSpacing(2)
        ),
        HSpacing(4)
      )
      Wizard.SetContents(title, contents, help_text, true, true)
      ret = nil
      selected = nil
      while ret.nil?
        ret = Convert.to_symbol(UI.UserInput)
        case ret
        when :abort, :cancel
          ret = :abort
          break if Popup.YesNo(_("Really abort add-on product installation?"))

          next
        when :back
          break
        when :next
          selected = Convert.to_integer(
            UI.QueryWidget(Id(:catalogs), :CurrentItem)
          )
          if selected.nil?
            ret = nil
            # popup message
            Popup.Message(_("Select a repository."))
          end
        end
      end

      if ret != :next
        Builtins.foreach(SourceManager.newSources) do |src|
          Builtins.y2milestone("Deleting source %1", src)
          Pkg.SourceDelete(src)
        end
      else
        Builtins.foreach(SourceManager.newSources) do |src|
          if src != selected
            Builtins.y2milestone("Deleting unused source %1", src)
            Pkg.SourceDelete(src)
          end
        end

        # BNC #481828: Using LABEL from content file as a repository name
        Packages.AdjustSourcePropertiesAccordingToProduct(selected)

        AddOnProduct.src_id = selected
        SourceManager.newSources = [selected]
      end

      AddOnProduct.last_ret = ret
      Builtins.y2milestone(
        "CatalogSelect Dialog ret: %1",
        AddOnProduct.last_ret
      )
      ret
    end

    # BNC #474745
    # Installs all the products from just added add-on media
    # @return [Symbol] always returns the :next symbol
    def InstallProduct
      log.info("Installing products from #{@added_repos.inspect}")

      if @added_repos.empty?
        log.error("No source has been added")
        return :next
      end

      all_products = Y2Packager::Resolvable.find(kind: :product)
      all_products.each do |product|
        # Product doesn't match the new source ID
        next unless @added_repos.include?(product.source)

        # Product is not available (either `installed or `selected or ...)
        if product.status != :available
          log.info("Skipping product #{product.name} with status " \
            "#{product.status}")
          next
        end

        success = Pkg.ResolvableInstall(product.name, :product)

        log.info("Selecting product '#{product.name}' for installation -> #{success}")
      end

      :next
    end

    def ProductSelect
      # Do not use Y2Packager::Resolvable.find(kind: :product) because the
      # returned Resolvables have not the variable "media".
      # It is not so important because this function will be called in an
      # installed system with the command "/sbin/yast2 add-on URL" only
      all_products = Pkg.ResolvableProperties("", :product, "")

      already_used_urls = {}
      # getting all source urls and product_dirs
      Builtins.foreach(all_products) do |p|
        one_src_id = Builtins.tointeger(Ops.get(p, "source"))
        next if one_src_id.nil?
        # the last source (just added)
        next if one_src_id == AddOnProduct.src_id

        src_general_data = Pkg.SourceGeneralData(one_src_id)
        source_url = Ops.get_string(src_general_data, "url", "")
        if source_url != "" && !source_url.nil?
          Ops.set(
            already_used_urls,
            source_url,
            Ops.get_string(src_general_data, "product_dir", "")
          )
        end
      end
      Builtins.y2milestone(
        "Already used urls with product_dirs: %1",
        already_used_urls
      )

      installed_products = Builtins.filter(all_products) do |p|
        Ops.get(p, "status") == :selected || Ops.get(p, "status") == :installed
      end
      Builtins.y2milestone(
        "Already installed/selected products: %1",
        installed_products
      )
      products = Builtins.filter(all_products) do |p|
        Ops.get_integer(p, "source", -1) == AddOnProduct.src_id
      end
      Builtins.y2milestone("Products on the media: %1", products)

      # there are no product on the given url
      if Builtins.size(products) == 0
        Builtins.y2milestone(
          "No poduct found on the media, but anyway, using it :-)"
        )
        # Display /media.1/info.txt if such file exists
        # Display license and wait for agreement
        # FIXME the same code is below
        license_ret2 = AddOnProduct.AcceptedLicenseAndInfoFile(
          AddOnProduct.src_id
        )
        if license_ret2 != true
          Builtins.y2milestone(
            "Removing the current source ID %1",
            AddOnProduct.src_id
          )
          Pkg.SourceDelete(AddOnProduct.src_id)

          Builtins.y2milestone("ProductSelect Dialog ret: %1", :abort)
          return :abort
        end

        data = Pkg.SourceGeneralData(AddOnProduct.src_id)
        url = Ops.get_string(data, "url", "")
        product_dir = Ops.get_string(data, "product_dir", "")

        # bugzilla #304659
        SetAddOnProductName(AddOnProduct.src_id)

        AddOnProduct.add_on_products = Builtins.add(
          AddOnProduct.add_on_products,
          "media"       => AddOnProduct.src_id,
          # table cell
          "product"     => if [nil, ""].include?(@new_addon_name)
                             _("No product found in the repository.")
                           else
                             @new_addon_name
                           end,
          "media_url"   => url,
          "product_dir" => product_dir
        )

        if Mode.config
          AddOnProduct.mode_config_sources = Builtins.add(
            AddOnProduct.mode_config_sources,
            AddOnProduct.src_id
          )
        end

        Builtins.y2milestone("ProductSelect Dialog ret: %1", :next)
        return :next
      end

      # Display /media.1/info.txt if such file exists
      # Display license and wait for agreement
      # FIXME the same code is above
      license_ret = AddOnProduct.AcceptedLicenseAndInfoFile(AddOnProduct.src_id)
      if license_ret != true
        Builtins.y2milestone(
          "Removing the current source ID %1",
          AddOnProduct.src_id
        )
        Pkg.SourceDelete(AddOnProduct.src_id)

        Builtins.y2milestone("ProductSelect Dialog ret: %1", :abort)
        return :abort
      end

      # there is only one product on the given url
      if Builtins.size(products) == 1
        Builtins.y2milestone("Only one product available - skipping dialog")
        prod = Ops.get(products, 0, {})
        if !AddOnProduct.CheckProductDependencies(
          [Ops.get_string(prod, "name", "")]
        )
          Pkg.ResolvableRemove(Ops.get_string(prod, "name", ""), :product)
          # message popup
          Popup.Message(
            _("Dependencies of the add-on product cannot be fulfilled.")
          )
          AddOnProduct.last_ret = :back

          Builtins.y2milestone("ProductSelect Dialog ret: %1", :back)
          return :back
        end
        # check whether the product is already available on some media - it is similar as below
        found_source = -1
        Builtins.foreach(all_products) do |p|
          if Ops.get_string(p, "name", "") == Ops.get_string(prod, "name", "") &&
              Ops.get_string(p, "version", "") ==
                  Ops.get_string(prod, "version", "") &&
              Ops.get_integer(p, "media", -2) !=
                  Ops.get_integer(prod, "media", -3)
            Builtins.y2milestone(
              "Product %1 already available on media %2",
              p,
              Ops.get_integer(p, "media", -1)
            )
            found_source = Ops.get_integer(p, "media", -1)
            raise Break
          end
        end
        if found_source != -1
          Builtins.y2milestone("Deleting source %1", AddOnProduct.src_id)
          Pkg.SourceDelete(AddOnProduct.src_id)
          AddOnProduct.src_id = found_source
        end
        Pkg.ResolvableInstall(Ops.get_string(prod, "name", ""), :product)
        data = Pkg.SourceGeneralData(AddOnProduct.src_id)

        url = Ops.get_string(data, "url", "")
        product_dir = Ops.get_string(data, "product_dir", "")

        # bugzilla #304659
        SetAddOnProductName(AddOnProduct.src_id)

        AddOnProduct.add_on_products = Builtins.add(
          AddOnProduct.add_on_products,
          "media"            => AddOnProduct.src_id,
          "product"          => if [nil, ""].include?(@new_addon_name) != ""
                                  Ops.get_string(
                                    prod,
                                    "display_name",
                                    Ops.get_string(
                                      prod,
                                      "short_name",
                                      Ops.get_string(prod, "name", "")
                                    )
                                  )
                                else
                                  @new_addon_name
                                end,
          "autoyast_product" => Ops.get_string(prod, "name", ""),
          "media_url"        => url,
          "product_dir"      => product_dir
        )

        if found_source == -1 && Mode.config
          AddOnProduct.mode_config_sources = Builtins.add(
            AddOnProduct.mode_config_sources,
            AddOnProduct.src_id
          )
        end

        Builtins.y2milestone("ProductSelect Dialog ret: %1", :next)
        return :next
      end

      # there are more than one products on the given url
      Builtins.y2milestone("Running product selection dialog")
      ret = nil
      items = Builtins.maplist(products) do |product|
        Item(
          Id(Ops.get_string(product, "name", "")),
          Ops.get_string(product, "name", "")
        )
      end
      # dialog caption
      title = _("Product Selection")
      contents = HBox(
        HStretch(),
        VBox(
          VStretch(),
          # multi selection list
          MultiSelectionBox(Id(:products), _("Available Products"), items),
          VStretch()
        ),
        HStretch()
      )
      # help text
      help_text = _(
        "<p><b><big>Product Selection</big></b><br/>\n" \
          "Multiple products were found in the repository. Select the products\n" \
          "to install.</p>\n"
      )
      Wizard.SetContents(title, contents, help_text, true, true)
      while ret.nil?
        ret = Convert.to_symbol(UI.UserInput)
        ret = :abort if ret == :cancel
        if ret == :abort
          # yes-no popup
          break if Popup.YesNo(_("Really abort add-on product installation?"))

          next
        end
        if ret == :next
          selected = Convert.convert(
            UI.QueryWidget(Id(:products), :SelectedItems),
            from: "any",
            to:   "list <string>"
          )
          # check whether the product is already available on some media - it is similar as above
          prods = Builtins.filter(products) do |p|
            Builtins.contains(selected, Ops.get_string(p, "name", ""))
          end
          all_found = true
          prod2src = {}
          Builtins.foreach(prods) do |product|
            product_found = false
            Builtins.foreach(all_products) do |p|
              if Ops.get_string(p, "name", "") ==
                  Ops.get_string(product, "name", "") &&
                  Ops.get_string(p, "version", "") ==
                      Ops.get_string(product, "version", "") &&
                  Ops.get_integer(p, "media", -2) !=
                      Ops.get_integer(product, "media", -3)
                product_found = true
                Ops.set(
                  prod2src,
                  Ops.get_string(product, "name", ""),
                  Ops.get_integer(p, "media", -3)
                )
                raise Break
              end
            end
            all_found &&= product_found
          end
          if all_found
            Builtins.y2milestone("Deleting source %1", AddOnProduct.src_id)
            Pkg.SourceDelete(AddOnProduct.src_id)
            AddOnProduct.src_id = -1
          end
          Builtins.foreach(selected) do |product|
            Pkg.ResolvableInstall(product, :product)
          end
          if !AddOnProduct.CheckProductDependencies(selected)
            Builtins.foreach(selected) do |product|
              Pkg.ResolvableRemove(product, :product)
            end
            # message popup
            Popup.Message(
              _(
                "Dependencies of the selected add-on products cannot be fulfilled."
              )
            )
            ret = nil
            next
          end
          data = Pkg.SourceGeneralData(AddOnProduct.src_id)
          url = Ops.get_string(data, "url", "")
          product_dir = Ops.get_string(data, "product_dir", "")

          Builtins.foreach(selected) do |product|
            src_id = if AddOnProduct.src_id == -1
              Ops.get(prod2src, product, -1)
            else
              AddOnProduct.src_id
            end
            # bugzilla #304659
            SetAddOnProductName(AddOnProduct.src_id)
            AddOnProduct.add_on_products = Builtins.add(
              AddOnProduct.add_on_products,
              "media"             => src_id,
              "product"           => if [nil, ""].include?(@new_addon_name)
                                       product
                                     else
                                       @new_addon_name
                                     end,
              "autoyast_prouduct" => product,
              "media_url"         => url,
              "product_dir"       => product_dir
            )
          end
          if AddOnProduct.src_id != -1 && Mode.config
            AddOnProduct.mode_config_sources = Builtins.add(
              AddOnProduct.mode_config_sources,
              AddOnProduct.src_id
            )
          end
        elsif ret != :back
          ret = nil
        end
      end

      if ret == :abort
        Builtins.y2milestone("Deleting source %1", AddOnProduct.src_id)
        Pkg.SourceDelete(AddOnProduct.src_id)
      end

      AddOnProduct.last_ret = ret
      Builtins.y2milestone(
        "ProductSelect Dialog ret: %1",
        AddOnProduct.last_ret
      )
      ret
    end

    # Check new product compliance; may abort the installation
    def CheckCompliance
      compliant = @added_repos.all? { |src_id| ProductProfile.CheckCompliance(src_id) }
      compliant ? :next : :abort
    end

    def RunWizard
      aliases = {
        "media"            => -> { MediaSelect() },
        "install_product"  => -> { InstallProduct() },
        "check_compliance" => -> { CheckCompliance() }
      }

      sequence = {
        "ws_start"         => "media",
        "media"            => {
          abort:  :abort,
          next:   "check_compliance",
          finish: "check_compliance",
          skip:   :skip
        },
        "check_compliance" => {
          abort: :abort,
          next:  "install_product"
        },
        "install_product"  => {
          abort:  :abort,
          next:   :next,
          finish: :next
        }
      }
      Sequencer.Run(aliases, sequence)
    end

    def RunAutorunWizard
      aliases = {
        "catalog" => -> { CatalogSelect() },
        "product" => -> { ProductSelect() }
      }

      sequence = {
        "ws_start" => "catalog",
        "catalog"  => { abort: :abort, next: "product", finish: :next },
        "product"  => { abort: :abort, next: :next, finish: :next }
      }
      Sequencer.Run(aliases, sequence)
    end

    def Redraw(enable_back, enable_next, enable_abort, back_button, next_button, abort_button)
      Builtins.y2milestone("Called Redraw()")
      # main screen heading
      title = _("Add-On Product Installation")

      # Help for add-on products
      help = _(
        "<p><big><b>Add-On Product Installation</b></big><br/>\n" \
          "Here see all add-on products that are selected for installation.\n" \
          "To add a new product, click <b>Add</b>. To remove an already added one,\n" \
          "select it and click <b>Delete</b>.</p>"
      )

      Builtins.y2milestone("Current products: %1", AddOnProduct.add_on_products)

      index = -1
      items = Builtins.maplist(AddOnProduct.add_on_products) do |product|
        Builtins.y2milestone("%1", product)
        index = Ops.add(index, 1)
        data = {}
        # BNC #464162, In AytoYaST, there is no media nr. yet
        if Builtins.haskey(product, "media") &&
            Ops.greater_than(Ops.get_integer(product, "media", -1), -1)
          data = Pkg.SourceGeneralData(Ops.get_integer(product, "media", -1))
        else
          data = deep_copy(product)
          Ops.set(data, "url", Ops.get_string(data, "media_url", "")) if Builtins.haskey(data, "media_url")
        end
        # placeholder for unknown path
        dir = Ops.get_locale(data, "product_dir", _("Unknown"))
        dir = "/" if dir == ""
        # table cell, %1 is URL, %2 is directory name
        media = Builtins.sformat(
          _("%1, Directory: %2"),
          Ops.get_locale(
            # placeholder for unknown URL
            data,
            "url",
            _("Unknown")
          ),
          dir
        )
        Item(
          Id(index),
          product_label(product["product"]),
          media
        )
      end

      contents = VBox(
        Table(
          Id(:summary),
          Header(
            # table header
            _("Product"),
            # table header
            _("Media")
          ),
          items
        ),
        Left(
          HBox(
            PushButton(Id(:add), Label.AddButton),
            PushButton(Id(:delete), Label.DeleteButton),
            HStretch()
          )
        )
      )

      Wizard.SetContentsButtons(title, contents, help, back_button, next_button)
      Wizard.SetAbortButton(:abort, abort_button)

      # Disable next button according to settings
      Wizard.DisableNextButton if !enable_next

      # If back or abort buttons should not be enabled, hide them
      # -> [Cancel] [OK] dialog
      Wizard.HideBackButton if !enable_back
      Wizard.HideAbortButton if !enable_abort

      Wizard.SetDesktopIcon("org.opensuse.yast.AddOn")

      # disable delete button if no items listed
      # bug #203809
      UI.ChangeWidget(Id(:delete), :Enabled, false) if Builtins.size(items) == 0

      nil
    end

    def RemoveSelectedAddOn(selected)
      Builtins.y2milestone(
        "Deleting %1 %2",
        selected,
        Ops.get(AddOnProduct.add_on_products, selected)
      )

      # remove whole media if the product is the only one on the media
      media = Ops.get_integer(
        AddOnProduct.add_on_products,
        [selected, "media"],
        -1
      )
      med_count = Builtins.size(Builtins.filter(AddOnProduct.add_on_products) do |prod|
        Ops.get_integer(prod, "media", -1) == media
      end)

      if med_count == 1
        Builtins.y2milestone("Deleting source %1", media)
        Pkg.SourceDelete(media)
      end

      # Deselect product from libzypp
      Pkg.ResolvableNeutral(AddOnProduct.add_on_products[selected]["product"], :product, false)

      # remove the selected record
      Ops.set(AddOnProduct.add_on_products, selected, nil)
      AddOnProduct.add_on_products = Builtins.filter(
        AddOnProduct.add_on_products
      ) { |prod| !prod.nil? }

      # Remove product from add-ons
      AddOnProduct.Disintegrate(media)

      # remove product from list of product to register (FATE #301312)
      AddOnProduct.RemoveRegistrationFlag(media)

      nil
    end

    # bugzilla #221377
    # the original control file is stored as /control.xml
    # the other (added) control files are under the
    # /tmp/$yast_tmp/control_files/ directory
    # as $srcid.xml files
    #
    # bugzilla #237297
    # in the installation workflow - back/ next buttons
    # in the installation proposal - cancel / accept buttons
    #
    # bugzilla #449773
    # added enable_abort, abort_button
    #
    def RunAddOnMainDialog(enable_back, enable_next, enable_abort, back_button, next_button, abort_button, confirm_abort)
      ret = nil

      not_enough_memory = Stage.initial && HasInsufficientMemory()
      no_addons = Builtins.size(AddOnProduct.add_on_products) == 0

      # bugzilla #239630
      # It might be dangerous to add more installation sources in installation
      # on machine with less memory
      # Do not report when some add-ons are already in use
      if not_enough_memory && !no_addons
        if !ContinueIfInsufficientMemory()
          # next time, it will be skipped too
          Installation.add_on_selected = false
          Installation.productsources_selected = false

          return :next
        end
      end

      # FATE #301928 - Saving one click
      # Bugzilla #893103 be consistent, so always when there is no add-on skip
      # Bugzilla #1102705 Do not redraw when skipping
      if no_addons || (offline_medium? && !media_addons_selected?)
        Builtins.y2milestone("Skipping to media_select")
        ret = :skip_to_add
      else
        # Show Add-Ons table
        Redraw(
          enable_back,
          enable_next,
          enable_abort,
          back_button,
          next_button,
          abort_button
        )
      end

      # store the initial settings, only once
      WorkflowManager.SetBaseWorkflow(false)

      # added / removed
      some_addon_changed = false
      begin
        # FATE #301928 - Saving one click
        ret = Convert.to_symbol(UI.UserInput) unless ret == :skip_to_add

        # aborting
        case ret
        when :abort, :cancel
          # User should confirm that
          break unless confirm_abort

          if Popup.ConfirmAbort(:incomplete)
            ret = :abort
            break
          end

          ret = nil
          # removing add-on
        when :delete
          selected = Convert.to_integer(
            UI.QueryWidget(Id(:summary), :CurrentItem)
          )
          if selected.nil?
            # message report
            Report.Message(_("Select a product to delete."))
            next
          end

          # bugzilla #305802
          next if !Confirm.DeleteSelected

          # TRANSLATORS: busy message
          UI.OpenDialog(Label(_("Removing selected add-on...")))

          RemoveSelectedAddOn(selected)
          some_addon_changed = true

          UI.CloseDialog

          Redraw(
            enable_back,
            enable_next,
            enable_abort,
            back_button,
            next_button,
            abort_button
          )

          # adding new add-on
        when :add, :skip_to_add
          # Show the checkbox only the first time in installation when there is no
          # other addon present, allow to quickly skip adding addons. In the
          # following runs it makes no sense as user explicitly wants to add an addon.
          # Change the state only if it has the default value (nil),
          # if the check box state has been already set then keep it unchanged.
          if SourceDialogs.display_addon_checkbox.nil? && ret == :skip_to_add
            SourceDialogs.display_addon_checkbox = true
          # never display the checkbox after pressing [Add]
          elsif SourceDialogs.display_addon_checkbox && ret == :add
            SourceDialogs.display_addon_checkbox = false
          end

          # bugzilla #293428
          # Release all sources before adding a new one
          # because of CD/DVD + url cd://
          Pkg.SourceReleaseAll

          Wizard.SetTitleIcon("yast-addon")

          ret2 = RunWizard()

          ret = ret2 if ret2 == :back
          return :abort if ret2 == :abort

          log.info "Subworkflow result: ret2: #{ret2}"

          if ret2 == :next
            # FIXME: can be these two iterations joined?
            # Add-On product has been added, integrate it (change workflow, use y2update)
            @added_repos.each { |src_id| AddOnProduct.Integrate(src_id) }
            # check whether it requests registration (FATE #301312)
            @added_repos.each { |src_id| AddOnProduct.PrepareForRegistration(src_id) }

            some_addon_changed = true
            # do not keep first_time, otherwise summary won't be shown during installation
            ret = nil if ret == :skip_to_add

            Redraw(
              enable_back,
              enable_next,
              enable_abort,
              back_button,
              next_button,
              abort_button
            )
            # bugzilla #293428
            # Release all sources after adding a new one
            # because of CD/DVD + url cd://
            Pkg.SourceReleaseAll

            # do not ask again for Full medium addons
            media_addons_selected if offline_medium?
          elsif ret2 == :cancel
            log.info("Aborted, removing add-on repositories: #{@added_repos.inspect}")

            # remove the repository
            @added_repos.each do |src_id|
              Pkg.SourceDelete(src_id)

              AddOnProduct.add_on_products.reject! do |add_on_product|
                add_on_product["media"] == src_id
              end
            end

            # properly return abort in installation
            ret = :abort if ret == :skip_to_add
          # extra handling for the global enable checkbox
          elsif ret == :skip_to_add
            ret = :back if ret2 == :back
            ret = :next if ret2 == :skip
          end
        end
      end until [:next, :back, :abort].include?(ret)

      Builtins.y2milestone(
        "Ret: %1, Some Add-on Added/Removed: %2",
        ret,
        some_addon_changed
      )
      Builtins.y2milestone(
        "Registration will be requested: %1",
        AddOnProduct.ProcessRegistration
      )

      # First stage installation, #247892
      # installation, update or autoinstallation
      if Stage.initial
        # bugzilla #221377
        AddOnProduct.ReIntegrateFromScratch if some_addon_changed
      end

      # bugzilla #293428
      # Release all sources after all Add-Ons are added and merged
      Builtins.y2milestone("Releasing all sources...")
      Pkg.SourceReleaseAll

      # bugzilla #305788
      Wizard.RestoreBackButton
      Wizard.RestoreAbortButton
      Wizard.RestoreNextButton

      ret
    end

    # AddOnsOverviewDialog -->

    def CreateAddOnsOverviewDialog
      Builtins.y2milestone("Creating OverviewDialog")

      Wizard.SetContents(
        # TRANSLATORS: dialog caption
        _("Installed Add-on Products"),
        VBox(
          Table(
            Id("list_of_addons"),
            Opt(:notify, :immediate),
            Header(
              # TRANSLATORS: table header item
              _("Add-on Product"),
              # TRANSLATORS: table header item
              _("URL")
            ),
            []
          ),
          VSquash(
            # Rich text plus border
            MinHeight(6, RichText(Id("product_details"), ""))
          ),
          HBox(
            PushButton(Id(:add), Label.AddButton),
            HSpacing(1),
            PushButton(Id(:delete), Label.DeleteButton),
            HStretch(),
            # TRANSLATORS: push button
            PushButton(Id(:packager), _("Run &Software Manager..."))
          )
        ),
        # TRANSLATORS: dialog help adp/1
        _("<p>All add-on products installed on your system are displayed.</p>") +
          # TRANSLATORS: dialog help adp/2
          _(
            "<p>Click <b>Add</b> to add a new add-on product, or <b>Delete</b> to remove an add-on which is in use.</p>"
          ),
        false,
        true
      )

      Wizard.SetTitleIcon("yast-addon")

      Wizard.HideBackButton
      Wizard.SetAbortButton(:abort, Label.CancelButton)
      Wizard.SetNextButton(:next, Label.OKButton)

      # BNC #517919: Broken layout in some obscure cases
      # Fixing it...
      UI.RecalcLayout

      nil
    end

    def ReturnCurrentlySelectedProductInfo
      if !UI.WidgetExists(Id("list_of_addons"))
        Builtins.y2error("No such widget: %1", "list_of_addons")
        return nil
      end

      item_id = Convert.to_string(
        UI.QueryWidget(Id("list_of_addons"), :CurrentItem)
      )

      # no items
      return nil if item_id.nil?

      if !Builtins.regexpmatch(item_id, "product_")
        Builtins.y2error("Wrong product ID '%1'", item_id)
        return nil
      end

      item_id = Builtins.substring(item_id, 8)

      Ops.get_map(@product_infos, item_id, {})
    end

    def AdjustInfoWidget
      product_info = ReturnCurrentlySelectedProductInfo()

      if product_info.to_h.empty?
        UI.ChangeWidget(Id("product_details"), :Value, "")

        return
      end

      product = product_info["product"]
      info    = product_info["info"] || {}

      vendor  = product.vendor.empty?  ? _("Unknown vendor")  : product.vendor
      version = product.version.empty? ? _("unknown version") : product.version
      urls    = info.fetch("URLs", []).join(",")
      aliases = info.fetch("aliases", []).join(",")

      details = []
      details << format(_("<b>Vendor:</b> %s<br>"), vendor)
      details << format(_("<b>Version:</b> %s<br>"), version)
      details << format(_("<b>Repository URL:</b> %s<br>"), urls) unless urls.empty?
      details << format(_("<b>Repository Alias:</b> %s<br>"), aliases) unless aliases.empty?

      UI.ChangeWidget(Id("product_details"), :Value, "<p>#{details.join("\n")}</p>")

      nil
    end

    # Modifies repository info (adds some missing pieces).
    def AdjustRepositoryInfo(info)
      Builtins.foreach(
        Convert.convert(
          Ops.get(info.value, "IDs", []),
          from: "list",
          to:   "list <integer>"
        )
      ) do |one_repo|
        if one_repo.nil? || one_repo == -1
          Builtins.y2warning("Wrong repo ID: %1", one_repo)
          next
        end
        source_data = Pkg.SourceGeneralData(one_repo)
        if !source_data.nil? && Builtins.haskey(source_data, "base_urls")
          urls = source_data["base_urls"]
          # Add the product directory if it is present
          urls.map! { |u| "#{u} (#{source_data["product_dir"]})" } if ![nil, "", "/"].include?(source_data["product_dir"])

          Ops.set(info.value, "URLs", urls)
        else
          Builtins.y2error("No URLs for repo ID %1", one_repo)
        end
        if !source_data.nil? && Builtins.haskey(source_data, "alias")
          Ops.set(
            info.value,
            "aliases",
            [Ops.get_string(source_data, "alias", "")]
          )
        end
      end

      nil
    end

    #
    # **Structure:**
    #
    #     $[
    #          "IDs"  : [8, 9, 12],
    #          "URLs" : ["dvd://", "http://some/URL/", "ftp://another/URL/"],
    #          "aliases" : ["alias1", "alias2", "alias3"],
    #      ]
    def GetRepoInfo(this_product, all_products)
      ret = { "IDs" => [], "URLs" => [], "aliases" => [] }

      product_arch = this_product.value.arch
      product_name = this_product.value.name
      product_version = this_product.value.version

      Builtins.foreach(all_products.value) do |one_product|
        next if one_product.arch != product_arch ||
          one_product.name != product_name ||
          one_product.version != product_version

        if one_product.source != -1
          Ops.set(
            ret,
            "IDs",
            Builtins.add(
              Ops.get(ret, "IDs", []),
              one_product.source
            )
          )
        end
      end

      ret_ref = arg_ref(ret)
      AdjustRepositoryInfo(ret_ref)
      ret = ret_ref.value

      deep_copy(ret)
    end

    def GetAllProductsInfo
      Y2Packager::Resolvable.find(kind: :product)
    end

    def GetInstalledProducts
      installed_products = Builtins.filter(GetAllProductsInfo()) do |one_product|
        # Do not list the base product
        next false if one_product.category == "base"

        # BNC #475591: Only those `installed or `selected ones should be actually visible
        one_product.status == :installed || one_product.status == :selected
      end

      deep_copy(installed_products)
    end

    def GetProductInfos
      all_products = GetAllProductsInfo()
      installed_products = GetInstalledProducts()

      repository_info = nil
      counter = -1

      @product_infos = {}

      Builtins.foreach(installed_products) do |one_product|
        # only add-on products should be listed
        if one_product.type != "addon"
          Builtins.y2milestone(
            "Skipping product: %1",
            one_product.display_name.empty? ? one_product.name : one_product.display_name
          )
          next
        end
        counter = Ops.add(counter, 1)
        Builtins.y2milestone(
          "Product: %1, Info: %2",
          one_product.name,
          repository_info
        )
        if repository_info.nil?
          Builtins.y2warning(
            "No matching repository found for product listed above"
          )
        end
        repository_info = (
          one_product_ref = arg_ref(one_product)
          all_products_ref = arg_ref(all_products)
          _GetRepoInfo_result = GetRepoInfo(one_product_ref, all_products_ref)
          one_product = one_product_ref.value
          all_products = all_products_ref.value
          _GetRepoInfo_result
        )
        Ops.set(
          @product_infos,
          Builtins.tostring(counter),
          "product" => one_product, "info" => repository_info
        )
      end

      deep_copy(@product_infos)
    end

    # List of all selected repositories
    #
    #
    # **Structure:**
    #
    #     add_on_products = [
    #        $[
    #          "media" : 4, // ID of the source
    #          "product_dir" : "/",
    #          "product" : "openSUSE version XX.Y",
    #          "autoyast_product" : "'PRODUCT' tag for AutoYaST Export",
    #          "media_url" : "Zypp URL of the product",
    #        ],
    #        ...
    #      ]
    def ReadFromSystem
      AddOnProduct.add_on_products = []

      product_infos = Convert.convert(
        GetProductInfos(),
        from: "map",
        to:   "map <string, map>"
      )
      if product_infos.nil? || product_infos == {}
        Builtins.y2warning("No add-on products have been found")
        return true
      end

      src_id = nil

      Builtins.foreach(product_infos) do |_index, product_desc|
        src_id = Ops.get_integer(product_desc, ["info", "IDs", 0], -1)
        if src_id.nil? || src_id == -1
          Builtins.y2error("Cannot get source ID from %1", product_desc)
          next
        end
        repo_data = Pkg.SourceGeneralData(src_id)
        AddOnProduct.add_on_products = Builtins.add(
          AddOnProduct.add_on_products,
          "media"            => src_id,
          "product_dir"      => Ops.get_string(repo_data, "product_dir", "/"),
          "product"          => Ops.get_locale(
            repo_data,
            "name",
            Ops.get_locale(
              repo_data,
              "alias",
              _("No product found in the repository.")
            )
          ),
          "autoyast_product" => Ops.get_locale(
            product_desc["product"].name,
            Ops.get_locale(
              repo_data,
              "name",
              Ops.get_locale(
                repo_data,
                "alias",
                _("No product found in the repository.")
              )
            )
          ),
          "media_url"        => Pkg.SourceURL(src_id)
        )
      end

      Builtins.y2milestone("Add-Ons read: %1", AddOnProduct.add_on_products)

      true
    end

    def RedrawAddOnsOverviewTable
      product_infos = GetProductInfos() || {}
      log.info("Currently used add-ons: #{product_infos}")

      products = product_infos.map do |index, product_desc|
        # TRANSLATORS: Product status, the installed product was not found in any enabled repository
        url = product_desc["info"]["URLs"].first || _("Not found in enabled repositories")

        Item(
          Id("product_#{index}"),
          ui_product_name(product_desc["product"]),
          url
        )
      end

      UI.ChangeWidget(Id("list_of_addons"), :Items, products)
      AdjustInfoWidget()

      # Nothing to do delete when there are no product listed
      UI.ChangeWidget(Id(:delete), :Enabled, !products.empty?)
    end

    def RunPackageSelector
      solve_ret = Pkg.PkgSolve(false)
      Builtins.y2milestone("Calling Solve() returned: %1", solve_ret)

      result = PackagesUI.RunPackageSelector("mode" => :summaryMode)

      return false if result != :accept

      Wizard.OpenNextBackDialog

      Builtins.y2milestone("Calling inst_rpmcopy")
      WFM.call("inst_rpmcopy")
      Builtins.y2milestone("Done")

      Wizard.CloseDialog

      true
    end

    # Removes the currently selected Add-On
    #
    # @return [Boolean] whether something has changed its state
    def RemoveProductWithDependencies
      pi = ReturnCurrentlySelectedProductInfo()
      if pi.nil? || pi == {}
        Builtins.y2error("Cannot remove unknown product")
        return nil
      end

      product_name = ui_product_name(pi["product"])
      if !Popup.AnyQuestion(
        Label.WarningMsg,
        Builtins.sformat(
          _(
            "Deleting the add-on product %1 may result in removing all the packages\n" \
              "installed from this add-on.\n" \
              "\n" \
              "Are sure you want to delete it?"
          ),
          product_name
        ),
        Label.DeleteButton,
        Label.CancelButton,
        :focus_no
      )
        Builtins.y2milestone("Deleting '%1' canceled", product_name)
        return nil
      end

      # TRANSLATORS: busy popup message
      UI.OpenDialog(Label(_("Removing product dependencies...")))
      # OpenDialog-BusyMessage

      src_ids = Ops.get_list(pi, ["info", "IDs"], [])

      # Temporary definitions
      package_string = ""

      # ["pkg1 version release arch", "pkg2 version release arch", ... ]
      installed_packages = Builtins.maplist(Pkg.GetPackages(:installed, false)) do |inst_package|
        Builtins.regexpsub(
          inst_package,
          "(.*) (.*) (.*) (.*)",
          "\\1 \\2-\\3 \\4"
        )
      end

      # y2milestone ("Installed packages: %1", installed_packages);

      # All packages from Add-On / Repository
      packages_from_repo = Y2Packager::Resolvable.find(kind: :package)

      packages_from_repo = Builtins.filter(packages_from_repo) do |one_package|
        # Package is not at the repositories to be deleted
        if !Builtins.contains(
          src_ids,
          one_package.source
        )
          next false
        end

        # Package *is* at the repository to delete

        # "name version-release arch", "version" already contains a release
        package_string = Builtins.sformat(
          "%1 %2 %3",
          one_package.name,
          one_package.version,
          one_package.arch
        )
        # The very same package (which is avaliable at the source) is also installed
        Builtins.contains(installed_packages, package_string)
      end

      Builtins.y2milestone(
        "%1 packages installed from repository",
        Builtins.size(packages_from_repo)
      )

      # Removing selected product, whatever it means
      # It might remove several products when they use the same name
      if (pi["product"].status == :installed ||
          pi["product"].status == :selected) &&
          pi["product"].name != ""
        Builtins.y2milestone(
          "Removing product: '%1'",
          pi["product"].name
        )
        Pkg.ResolvableRemove(
          pi["product"].name,
          :product
        )
      else
        Builtins.y2milestone("Product is neither `installed nor `selected")
      end

      # Removing repositories of the selected product
      Builtins.y2milestone(
        "Removing repositories: %1, url(s): %2",
        src_ids,
        Ops.get_list(pi, ["info", "URLs"], [])
      )
      Builtins.foreach(src_ids) do |src_id|
        if Ops.greater_than(src_id, -1)
          Builtins.y2milestone("Removing repository ID: %1", src_id)
          Pkg.SourceDelete(src_id)
        else
          Builtins.y2milestone("Product doesn't have any repository in use")
        end
      end

      # The product repository is already removed, checking all installed packages

      # All available packages
      available_packages = Builtins.maplist(Pkg.GetPackages(:available, false)) do |inst_package|
        Builtins.regexpsub(
          inst_package,
          "(.*) (.*) (.*) (.*)",
          "\\1 \\2-\\3 \\4"
        )
      end

      available_package_names = Pkg.GetPackages(:available, true)
      Builtins.y2milestone(
        "%1 available packages",
        Builtins.size(available_package_names)
      )

      status_changed = false

      # check all packages installed from the just removed repository
      Builtins.foreach(packages_from_repo) do |one_package|
        # "name version-release arch", "version" already contains a release
        package_string = Builtins.sformat(
          "%1 %2 %3",
          one_package.name,
          one_package.version,
          one_package.arch
        )
        # installed package is not available anymore
        if !Builtins.contains(available_packages, package_string)
          status_changed = true

          # it must be removed
          Builtins.y2milestone("Removing: %1", package_string)
          Pkg.ResolvableRemove(
            one_package.name,
            :package
          )

          # but if another version is present, select if for installation
          if Builtins.contains(
            available_package_names,
            one_package.name
          )
            Builtins.y2milestone(
              "Installing another version of %1",
              one_package.name
            )
            Pkg.ResolvableInstall(
              one_package.name,
              :package
            )
          end
        end
      end

      # See OpenDialog-BusyMessage
      UI.CloseDialog

      return RunPackageSelector() if status_changed

      true
    end

    def RunAddProductWorkflow
      # partition the addons into two groups:
      # - plain addons (no installation.xml)
      # - addons with installation.xml
      # handle each group separately
      plain_addons, workflow_addons = @added_repos.partition do |repo|
        WorkflowManager.GetCachedWorkflowFilename(:addon, repo, "").nil?
      end

      plain_addons.each do |repo|
        # the src_id value must be set before calling DoInstall
        AddOnProduct.src_id = repo
        # just handle each repository separately, select the packages but do not
        # install them yet
        AddOnProduct.DoInstall(install_packages: false)
      end

      # install all packages at once
      AddOnProduct.DoInstall_NoControlFile unless plain_addons.empty?

      workflow_addons.each do |repo|
        AddOnProduct.src_id = repo
        # run the installation.xml
        AddOnProduct.DoInstall
      end

      # Write only when there are some changes
      Write()

      # Add additional update repos. This must be done
      # after the product has been installed in order to
      # read the product update repositories from the
      # installed /etc/products.d/*.prod file.
      WFM.CallFunction("inst_addon_update_sources", [])

      Pkg.SourceReleaseAll

      nil
    end

    # Cleanup UI - Prepare it for progress callbacks
    def SetWizardWindowInProgress
      Wizard.SetContents(
        _("Add-On Products"),
        Label(_("Initializing...")),
        _("<p>Initializing add-on products...</p>"),
        false,
        false
      )

      Wizard.SetTitleIcon("yast-addon")

      nil
    end

    # BNC #476417: When user cancels removing an add-on, we have to neutralize all
    # libzypp resolvables to their inital states
    def NeutralizeAllResolvables
      Builtins.foreach([:product, :patch, :package, :srcpackage, :pattern]) do |one_type|
        Builtins.y2milestone("Neutralizing all: %1", one_type)
        Pkg.ResolvableNeutral("", one_type, true)
      end

      nil
    end

    # Either there are no repositories now or they
    # were changed, neutralized, etc.
    def LoadLibzyppNow
      Builtins.y2milestone("Reloading libzypp")
      SetWizardWindowInProgress()

      # Reinitialize
      Pkg.TargetInitialize(Installation.destdir)
      Pkg.TargetLoad
      Pkg.SourceStartManager(true)

      nil
    end

    def RunAddOnsOverviewDialog
      Builtins.y2milestone("Overview Dialog")
      ret = :next

      # to see which products are installed
      Pkg.PkgSolve(true)

      CreateAddOnsOverviewDialog()
      RedrawAddOnsOverviewTable()

      userret = nil

      loop do
        userret = UI.UserInput

        # Abort
        case userret
        when :abort, :cancel
          Builtins.y2warning("Aborting...")
          ret = :abort
          break

          # Closing
        when :next, :finish
          Builtins.y2milestone("Finishing...")
          ret = :next
          break

          # Addin new product
        when :add
          Builtins.y2milestone("Using new Add-On...")

          RunAddProductWorkflow() if RunWizard() == :next

          # Something has disabled all the repositories or finished
          # libzypp, reload it
          current_repos = Pkg.SourceGetCurrent(true)
          LoadLibzyppNow() if current_repos.nil? || Builtins.size(current_repos) == 0

          CreateAddOnsOverviewDialog()
          RedrawAddOnsOverviewTable()

          # Removing product
        when :delete
          Builtins.y2milestone("Removing selected product...")

          rpwd = RemoveProductWithDependencies()
          Builtins.y2milestone("RPWD result was: %1", rpwd)

          # nil == user decided not to remove the product
          if rpwd.nil?
            Builtins.y2milestone(
              "User decided not to remove the selected product"
            )
            next

            # false == user decided not confirm the add-on removal
            # libzypp has been already changed
            # BNC #476417: Getting libzypp to the previous state
          elsif rpwd == false
            Builtins.y2milestone("User aborted the package manager")

            SetWizardWindowInProgress()

            # Neutralizing all resolvables (some are usually marked for removal)
            NeutralizeAllResolvables()
            Pkg.SourceFinishAll

            LoadLibzyppNow()

            # true == packages and sources have been removed
          else
            # Store sources state
            Pkg.SourceSaveAll
          end

          CreateAddOnsOverviewDialog()
          RedrawAddOnsOverviewTable()

          # Redrawing info widget
        when "list_of_addons"
          AdjustInfoWidget()

          # Calling packager directly
        when :packager
          ui_extension_checker = UIExtensionChecker.new("pkg")

          if ui_extension_checker.ok?
            Builtins.y2milestone("Calling packager...")
            RunPackageSelector()

            CreateAddOnsOverviewDialog()
            RedrawAddOnsOverviewTable()
          end

          # Everything else
        else
          Builtins.y2error("Uknown ret: %1", userret)
        end
      end

      Wizard.RestoreBackButton

      ret
    end

    def activate_addon_changes(sources_before)
      sources_after = Pkg.SourceGetCurrent(false)
      Builtins.y2milestone("Sources with new one added: %1", sources_after)

      # collect the newly added repositories
      @added_repos = []
      sources_after.each do |source|
        next if sources_before.include?(source)

        @added_repos << source
        log.info("Added source ID: #{source}")
      end

      if !@added_repos.empty?
        # rename the repository to the product name if user left the name field empty
        if SourceDialogs.GetRepoName.empty?
          # first set the fallback name for the added repository because the
          # Packages.AdjustSourcePropertiesAccordingToProduct call
          # changes only the repositories with the fallback name
          sources = Pkg.SourceEditGet
          sources.each do |src|
            next unless @added_repos.include?(src["SrcId"])
            next if Y2Packager::Resolvable.find(kind: :product, source: src["SrcId"]).empty?

            log.info "Renaming repository #{src["raw_name"].inspect}"
            src["raw_name"] = Packages.fallback_name
          end
          Pkg.SourceEditSet(sources)
        end

        @added_repos.each do |src_id|
          # use product name as a repository name
          Packages.AdjustSourcePropertiesAccordingToProduct(src_id)
          # used add-ons are stored in a special list
          AddAddOnToStore(src_id)
        end
      else
        # TODO: can this situation actually happen?
        @added_repos << sources_after.last
        log.warn("Fallback src_id: #{sources_after.last}")
      end

      # BNC #441380
      # Refresh and load the added sources, this is needed since the unified
      # functions from packager are used.
      @added_repos.each { |src_id| Pkg.SourceRefreshNow(src_id) }
      Pkg.SourceLoad

      # BNC #468449
      # It may happen that the add-on control file contains some code that
      # would drop the changes made, so it's better to save the soruces now
      return unless Mode.normal

      Builtins.y2milestone("Saving all sources")
      Pkg.SourceSaveAll
    end

    # Display the media type selection dialog, in the offline mode it is skipped
    # when no addon is selected.
    #
    # @return [Symbol] the workflow symbol (:next, :back, ...)
    def media_type_selection
      if offer_media_addons?
        # preselect the installation repository without asking the user
        # for the URL when adding an add-on first time on the offline medium
        SourceDialogs.SetURL(InstURL.installInf2Url(""))
        return :finish
      end
      # use the preselected type or the same type as for the previous add-on,
      # if not set it will use the default (the code actually runs
      # SourceDialogs.SetURL(SourceDialogs.GetURL) internally)
      ret = TypeDialogOpts(true, SourceDialogs.GetURL)
      log.debug "SourceDialogs.addon_enabled: #{SourceDialogs.addon_enabled}"
      # explicitly check for false (nil means the checkbox was not displayed)
      ret = :skip if ret == :next && SourceDialogs.addon_enabled == false
      log.debug "TypeDialog result: #{ret}"
      ret
    end

  private

    #
    # Offer the add-ons from the installation medium automatically?
    # The addons are only offered when:
    #   - Running in the first stage
    #   - Using the Full installation medium
    #   - No other add-on has already beed added (do not offer them again when
    #     going back and forth)
    #   - The system is not registered (to not mix the add-ons from SCC and from DVD)
    #
    # @return [Boolean] `true` if the addons should be offered automatically
    #
    def offer_media_addons?
      # media addons already selected or not Full medium
      return false if media_addons_selected? || !offline_medium?

      # check the registration status, be careful that the registration might be
      # missing in the inst-sys (like on the openSUSE Leap media)
      begin
        require "registration/registration"
        !Registration::Registration.is_registered?
      rescue LoadError
        return false
      end
    end

    # Find the human readable product name from the product
    # @param product [Y2Packager::Resolvable] the product
    # @return [String] a human readable product name
    def ui_product_name(product)
      return _("Unknown product") unless product

      [product.display_name, product.name, _("Unknown product")].reject(&:empty?).first
    end

    # Find the human readable product name for the product ID
    # @param product [String] the product name (ID)
    # @return [String] a human readable product name or the original ID if not found
    def product_label(product)
      selected_product = Y2Packager::Resolvable.find(
        kind: :product, status: :selected, name: product
      ).first

      # fallback to the internal product name
      selected_product&.display_name || product
    end

    # Have been the Full media addons selected?
    # @return [Boolean] true if the add-on selection dialog has been displayed
    def media_addons_selected?
      @@media_addons_selected
    end

    # Mark the media addons as selected
    # @param value [Boolean] the selection status
    def media_addons_selected(value = true)
      @@media_addons_selected = value
    end

    # Running installation using the offline (Full) medium?
    # @return [Boolean] true if offline installation is running
    def offline_medium?
      Stage.initial && Y2Packager::MediumType.offline?
    end
  end
end