Get and display subsection completion status in tasklist

app/helpers/tasklist_helper.rb

@@ -0,0 +1,21 @@
+module TasklistHelper
+  def get_subsection_status(subsection_name, case_log)
+    @form = Form.new(2021, 2022)
+    questions = @form.questions_for_subsection(subsection_name).keys
+
+    if subsection_name == "declaration"
+      return all_questions_completed(case_log) ? "Not started" : "Cannot start yet"
+    end
+    if questions.all? {|question| case_log[question].blank?}
+      return "Not started"
+    end
+    if questions.all? {|question| case_log[question].present?}
+      return "Completed"
+    end
+    "In progress"
+  end
+
+  def all_questions_completed(case_log)
+    case_log.attributes.all? { |_question, answer| answer.present?}
+  end
+end

app/models/form.rb

@@ -60,4 +60,8 @@ class Form
 
     pages_for_subsection(subsection).keys[current_page_idx - 1]
   end
+
+  def questions_for_subsection(subsection)
+    pages_for_subsection(subsection).map {|title, _value| questions_for_page(title)}.reduce(:merge)
+  end
 end

app/views/case_logs/_tasklist.html.erb

@@ -11,8 +11,9 @@
           <li class="app-task-list__item">
             <% first_page = @form.first_page_for_subsection(subsection_key) %>
             <%= link_to subsection_value["label"], send("case_log_#{first_page}_path", @case_log), class: "task-name" %>
+            <% subsection_status=get_subsection_status(subsection_key, @case_log) %>
             <strong class="govuk-tag govuk-tag--grey app-task-list__tag">
-              Not started
+              <%= subsection_status %>
             </strong>
           </li>
         <% end %>

spec/features/case_log_spec.rb

@@ -25,10 +25,20 @@ RSpec.describe "Test Features" do
   end
 
   describe "Viewing a log" do
-    it "displays a tasklist header" do
-      visit("/case_logs/#{id}")
-      expect(page).to have_content("Tasklist for log #{id}")
-      expect(page).to have_content("This submission is #{status}")
+    context "tasklist page" do
+      it "displays a tasklist header" do
+        visit("/case_logs/#{id}")
+        expect(page).to have_content("Tasklist for log #{id}")
+        expect(page).to have_content("This submission is #{status}")
+      end
+
+      it "displays a section status" do
+        visit("/case_logs/#{empty_case_log.id}")
+
+        assert_selector ".govuk-tag", text: /Not started/, count: 8
+        assert_selector ".govuk-tag", text: /Completed/, count: 0
+        assert_selector ".govuk-tag", text: /Cannot start yet/, count: 1
+      end
     end
 
     it "displays the household questions when you click into that section" do

spec/helpers/tasklist_helper_spec.rb

@@ -0,0 +1,31 @@
+require "rails_helper"
+
+RSpec.describe TasklistHelper do
+  describe "get subsection status" do
+    let!(:case_log) { FactoryBot.create(:case_log) }
+    @form = Form.new(2021, 2022)
+
+    it "returns not started if none of the questions in the subsection are answered" do
+      expect(get_subsection_status("income_and_benefits", case_log)).to eq("Not started")
+    end
+
+    it "returns cannot start yet if the subsection is declaration" do
+      expect(get_subsection_status("declaration", case_log)).to eq("Cannot start yet")
+    end
+
+    it "returns in progress if some of the questions have been answered" do
+      case_log["previous_postcode"] = "P0 5TT"
+      expect(get_subsection_status("local_authority", case_log)).to eq("In progress")
+    end
+
+    it "returns completed if all the questions in the subsection have been answered" do
+      %w(net_income net_income_frequency net_income_uc_proportion housing_benefit).each {|x| case_log[x] = "value" }
+      expect(get_subsection_status("income_and_benefits", case_log)).to eq("Completed")
+    end
+
+    it "returns not started if the subsection is declaration and all the questions are completed" do
+      completed_case_log = CaseLog.new(case_log.attributes.map { |key, value| Hash[key, value || "value"]  }.reduce(:merge))
+      expect(get_subsection_status("declaration", completed_case_log)).to eq("Not started")
+    end
+  end
+end

spec/models/form_spec.rb

@@ -32,4 +32,13 @@ RSpec.describe Form, type: :model do
       end
     end
   end
+
+  describe ".questions_for_subsection" do
+    let(:subsection) { "income_and_benefits" }
+    it "returns all questions for subsection" do
+      result = form.questions_for_subsection(subsection)
+      expect(result.length).to eq(4)
+      expect(result.keys).to eq(["net_income", "net_income_frequency", "net_income_uc_proportion", "housing_benefit"])
+    end
+  end
 end