Make removing the Welsh content for a form reset the Welsh task

app/controllers/forms/welsh_translation_controller.rb

@@ -13,7 +13,13 @@ def create
       @welsh_translation_input = WelshTranslationInput.new(welsh_translation_params)
       @table_presenter = Forms::TranslationTablePresenter.new
 
-      if @welsh_translation_input.submit
+      if @welsh_translation_input.all_fields_empty?
+        # if all fields are empty we delete the welsh translation
+        @delete_welsh_translation_input = Forms::DeleteWelshTranslationInput.new(form: current_form)
+        if @delete_welsh_translation_input.submit_without_confirm
+          redirect_to form_path(@welsh_translation_input.form), success: t("forms.welsh_translation.destroy.success")
+        end
+      elsif @welsh_translation_input.submit
         success_message = if @welsh_translation_input.mark_complete == "true"
                             t("banner.success.form.welsh_translation_saved_and_completed")
                           else

app/input_objects/forms/delete_welsh_translation_input.rb

@@ -8,6 +8,11 @@ def submit
     true
   end
 
+  def submit_without_confirm
+    reset_translations
+    true
+  end
+
 private
 
   def reset_translations

app/input_objects/forms/welsh_translation_input.rb

@@ -123,6 +123,10 @@ def assign_form_values
     self
   end
 
+  def all_fields_empty?
+    attributes.except!("mark_complete").values.all?(&:blank?)
+  end
+
   def form_has_declaration?
     form.declaration_markdown.present?
   end

spec/input_objects/forms/delete_welsh_translation_input_spec.rb

@@ -215,6 +215,156 @@
     end
   end
 
+  describe "#submit_without_confirm" do
+    let(:form) do
+      create :form,
+             name_cy: "New Welsh name",
+             what_happens_next_markdown: "English what happens next",
+             what_happens_next_markdown_cy: "New Welsh what happens next",
+             declaration_text: "English declaration",
+             declaration_text_cy: "New Welsh declaration",
+             support_email: "english-support@example.gov.uk",
+             support_email_cy: "new-welsh-support@example.gov.uk",
+             support_phone: "English support phone",
+             support_phone_cy: "0800 123 4567",
+             support_url: "https://www.gov.uk/english-support",
+             support_url_cy: "https://www.gov.uk/new-welsh-support",
+             support_url_text: "English support url text",
+             support_url_text_cy: "New Welsh Support",
+             privacy_policy_url: "https://www.gov.uk/english-privacy",
+             privacy_policy_url_cy: "https://www.gov.uk/new-welsh-privacy",
+             payment_url_cy: "https://www.gov.uk/payments/new-welsh-payment-link",
+             available_languages: %w[en cy],
+             welsh_completed: true,
+             pages: [page]
+    end
+
+    let(:page) do
+      create :page,
+             question_text_cy: "Ydych chi'n adnewyddu trwydded?",
+             hint_text: "English hint text",
+             hint_text_cy: "Dewiswch 'Ydw' os oes gennych drwydded ddilys eisoes.",
+             page_heading: "English page heading",
+             page_heading_cy: "Trwyddedu",
+             guidance_markdown: "English guidance",
+             guidance_markdown_cy: "Mae'r rhan hon o'r ffurflen yn ymwneud â thrwyddedu.",
+             answer_settings_cy: {
+               selection_options: [
+                 { name: "Welsh option 1", value: "Option 1" },
+                 { name: "Welsh option 2", value: "Option 2" },
+               ],
+               none_of_the_above_question: {
+                 question_text: "Welsh none of the above question?",
+               },
+             }
+    end
+
+    let(:condition) do
+      create :condition,
+             routing_page: page,
+             exit_page_markdown_cy: "Nid ydych yn gymwys",
+             exit_page_heading_cy: "Mae'n ddrwg gennym, nid ydych yn gymwys ar gyfer y gwasanaeth hwn."
+    end
+
+    context "when called" do
+      it "returns true" do
+        expect(delete_welsh_translation_input.submit_without_confirm).to be true
+      end
+
+      it "deletes all of the welsh form content" do
+        expect { delete_welsh_translation_input.submit_without_confirm }.to change { form.reload.what_happens_next_markdown_cy }.to(nil)
+          .and change { form.reload.declaration_text_cy }.to(nil)
+          .and change { form.reload.support_email_cy }.to(nil)
+          .and change { form.reload.support_phone_cy }.to(nil)
+          .and change { form.reload.support_url_cy }.to(nil)
+          .and change { form.reload.support_url_text_cy }.to(nil)
+          .and change { form.reload.privacy_policy_url_cy }.to(nil)
+          .and change { form.reload.payment_url_cy }.to(nil)
+      end
+
+      it "deletes all of the welsh page content" do
+        expect { delete_welsh_translation_input.submit_without_confirm }.to change { page.reload.question_text_cy }.to(nil)
+          .and change { page.reload.hint_text_cy }.to(nil)
+          .and change { page.reload.page_heading_cy }.to(nil)
+          .and change { page.reload.guidance_markdown_cy }.to(nil)
+          .and change { page.reload.answer_settings_cy }.to(nil)
+      end
+
+      it "deletes all of the welsh condition content" do
+        expect { delete_welsh_translation_input.submit_without_confirm }.to change { condition.reload.exit_page_markdown_cy }.to(nil)
+          .and change { condition.reload.exit_page_heading_cy }.to(nil)
+      end
+
+      it "resets the available_languages field to only include English" do
+        expect { delete_welsh_translation_input.submit_without_confirm }.to change { form.reload.available_languages }.to(%w[en])
+      end
+
+      it "resets the welsh_completed status" do
+        expect { delete_welsh_translation_input.submit_without_confirm }.to change { form.reload.welsh_completed }.to(false)
+      end
+
+      context "when the form is live" do
+        let(:form) do
+          create :form,
+                 :live,
+                 name_cy: "New Welsh name",
+                 what_happens_next_markdown: "English what happens next",
+                 what_happens_next_markdown_cy: "New Welsh what happens next",
+                 declaration_text: "English declaration",
+                 declaration_text_cy: "New Welsh declaration",
+                 support_email: "english-support@example.gov.uk",
+                 support_email_cy: "new-welsh-support@example.gov.uk",
+                 support_phone: "English support phone",
+                 support_phone_cy: "0800 123 4567",
+                 support_url: "https://www.gov.uk/english-support",
+                 support_url_cy: "https://www.gov.uk/new-welsh-support",
+                 support_url_text: "English support url text",
+                 support_url_text_cy: "New Welsh Support",
+                 privacy_policy_url: "https://www.gov.uk/english-privacy",
+                 privacy_policy_url_cy: "https://www.gov.uk/new-welsh-privacy",
+                 payment_url_cy: "https://www.gov.uk/payments/new-welsh-payment-link",
+                 available_languages: %w[en cy],
+                 welsh_completed: true,
+                 pages: [page]
+        end
+
+        it "sets the form_status to `live_with_draft`" do
+          expect { delete_welsh_translation_input.submit_without_confirm }.to change { form.reload.state }.to("live_with_draft")
+        end
+      end
+
+      context "when the form is archived" do
+        let(:form)  do
+          create :form,
+                 :archived,
+                 name_cy: "New Welsh name",
+                 what_happens_next_markdown: "English what happens next",
+                 what_happens_next_markdown_cy: "New Welsh what happens next",
+                 declaration_text: "English declaration",
+                 declaration_text_cy: "New Welsh declaration",
+                 support_email: "english-support@example.gov.uk",
+                 support_email_cy: "new-welsh-support@example.gov.uk",
+                 support_phone: "English support phone",
+                 support_phone_cy: "0800 123 4567",
+                 support_url: "https://www.gov.uk/english-support",
+                 support_url_cy: "https://www.gov.uk/new-welsh-support",
+                 support_url_text: "English support url text",
+                 support_url_text_cy: "New Welsh Support",
+                 privacy_policy_url: "https://www.gov.uk/english-privacy",
+                 privacy_policy_url_cy: "https://www.gov.uk/new-welsh-privacy",
+                 payment_url_cy: "https://www.gov.uk/payments/new-welsh-payment-link",
+                 available_languages: %w[en cy],
+                 welsh_completed: true,
+                 pages: [page]
+        end
+
+        it "sets the form_status to `archived_with_draft`" do
+          expect { delete_welsh_translation_input.submit_without_confirm }.to change { form.reload.state }.to("archived_with_draft")
+        end
+      end
+    end
+  end
+
   describe "#confirmed?" do
     context "when the input is invalid" do
       it "returns false" do

spec/input_objects/forms/welsh_translation_input_spec.rb

@@ -35,7 +35,7 @@
   def build_form(attributes = {})
     default_attributes = {
       id: 1,
       name: "Apply for a juggling licence",
       what_happens_next_markdown: "English what happens next",
       welsh_completed: false,
       what_happens_next_markdown_cy: "Welsh what happens next",
@@ -56,6 +56,30 @@
     build(:form, default_attributes.merge(attributes))
   end
 
+  def build_empty_welsh_form
+    empty_attributes = {
+      id: 1,
+      name: "Apply for a juggling licence",
+      what_happens_next_markdown: "English what happens next",
+      welsh_completed: false,
+      what_happens_next_markdown_cy: "",
+      declaration_text: "English declaration",
+      declaration_text_cy: "",
+      support_email: "english-support@example.gov.uk",
+      support_email_cy: "",
+      support_phone: "01234 987654",
+      support_phone_cy: "",
+      support_url_cy: "",
+      support_url: "https://www.gov.uk/english-support",
+      support_url_text_cy: "",
+      support_url_text: "English Support",
+      privacy_policy_url_cy: "",
+      payment_url: "https://www.gov.uk/english-payment",
+      payment_url_cy: "",
+    }
+    build(:form, empty_attributes)
+  end
+
   describe "validations" do
     it "is not valid if mark complete is blank" do
       form = OpenStruct.new(welsh_completed: false, name: "Apply for a juggling licence")
@@ -657,4 +681,23 @@
       expect(welsh_translation_input.mark_complete).to eq(form.welsh_completed)
     end
   end
+
+  describe "#all_fields_empty?" do
+    context "when the welsh translation fields are not empty" do
+      let(:form) { build_form }
+
+      it "returns false" do
+        expect(welsh_translation_input.all_fields_empty?).to be false
+      end
+    end
+
+    context "when the welsh translation fields are all empty" do
+      let(:form) { build_empty_welsh_form }
+
+      it "returns true" do
+        welsh_translation_input = described_class.new(form:)
+        expect(welsh_translation_input.all_fields_empty?).to be true
+      end
+    end
+  end
 end

spec/requests/forms/welsh_translation_controller_spec.rb

@@ -94,6 +94,23 @@
       end
     end
 
+    context "when 'Yes' is selected and all fields are empty" do
+      let(:page_translations_attributes) { { "0" => { "id" => form.pages.first.id, question_text_cy: "", condition_translations_attributes: } } }
+      let(:params) { { forms_welsh_translation_input: { form:, mark_complete:, name_cy: "", privacy_policy_url_cy: "", page_translations_attributes: } } }
+
+      it "deletes the form" do
+        post(welsh_translation_create_path(id), params:)
+        expect(form.pages.first.reload.question_text_cy).to be_nil
+        expect(condition.reload.exit_page_heading_cy).to be_nil
+      end
+
+      it "redirects to the form with a success banner" do
+        post(welsh_translation_create_path(id), params:)
+        expect(response).to redirect_to(form_path(id))
+        expect(flash[:success]).to eq(I18n.t("forms.welsh_translation.destroy.success"))
+      end
+    end
+
     context "when the user is not authorized" do
       let(:current_user) { build :user }