Get print host configuration from print services

app/models/print_host.rb

@@ -1,11 +1,17 @@
 class PrintHost < ApplicationRecord
   # i18n-tasks-use t("activerecord.models.print_host")
 
-  PROTOCOLS = [
-    "moonraker" # i18n-tasks-use t("print_hosts.protocols.moonraker")
-  ].freeze
+  PROTOCOLS = Print.constants.map { [const_get("Print::#{it}::PROTOCOL"), const_get("Print::#{it}")] }.to_h.freeze
 
   validates :name, presence: true
   validates :endpoint, presence: true
-  validates :protocol, presence: true, inclusion: {in: PROTOCOLS}
+  validates :protocol, presence: true, inclusion: {in: PROTOCOLS.keys}
+
+  def service
+    PROTOCOLS[protocol].new(print_host: self)
+  end
+
+  def input_types
+    PROTOCOLS[protocol]::INPUT_TYPES
+  end
 end

app/views/print_hosts/_form.html.erb

@@ -3,7 +3,7 @@
     <%= TextInputRow(form: form, attribute: :name, label: PrintHost.human_attribute_name(:name), help: t(".name.help")) %>
     <%= TextInputRow(form: form, attribute: :endpoint, label: PrintHost.human_attribute_name(:endpoint), help: t(".endpoint.help")) %>
     <%= SelectInputRow form: form, attribute: :protocol, label: PrintHost.human_attribute_name(:protocol), help: t(".protocol.help"),
-          select_options: Naturally.sort(PrintHost::PROTOCOLS).map { [translate("print_hosts.protocols.%{protocol}" % {protocol: it}), it] } %>
+          select_options: Naturally.sort(PrintHost::PROTOCOLS.keys).map { [translate("print_hosts.protocols.%{protocol}" % {protocol: it}), it] } %>
     <hr>
     <div>
       <%= form.submit class: "btn btn-primary" %>

app/views/print_hosts/index.rb

@@ -10,13 +10,15 @@ def view_template
     p { t("views.print_hosts.index.description") }
     table class: "table table-striped" do
       tr do
+        th
         th { PrintHost.human_attribute_name :name }
         th { PrintHost.human_attribute_name :endpoint }
         th { PrintHost.human_attribute_name :protocol }
         th
       end
       @print_hosts.each do |print_host|
         tr do
+          td { print_host.service.ok? ? "✅" : "❌" }
           td { print_host.name }
           td { code { print_host.endpoint } }
           td { translate("print_hosts.protocols.%{protocol}" % {protocol: print_host.protocol}) }

spec/models/print_host_spec.rb

@@ -24,4 +24,12 @@
       expect(described_class.create(attributes.merge(protocol: :nope))).not_to be_valid
     end
   end
+
+  context "with a valid print host" do
+    let(:print_host) { create(:print_host) }
+
+    it "can list input types" do
+      expect(print_host.input_types.map(&:to_s)).to eq ["text/x-gcode"]
+    end
+  end
 end