Add new email content if user is authenticating to manage their subsc…

…riptions

If the destination is /manage/authenticate, we can use a different subject line and body

app/builders/subscriber_auth_email_builder.rb

@@ -25,10 +25,39 @@ def call
   attr_reader :subscriber, :destination, :token
 
   def subject
-    "Confirm your email address"
+    return manage_your_subscriptions_subject if destination == "/manage/authenticate"
+
+    confirm_your_email_address_subject
   end
 
   def body
+    return manage_your_subscriptions_body if destination == "/manage/authenticate"
+
+    confirm_your_email_address_body
+  end
+
+  def link
+    Plek.new.website_uri.tap do |uri|
+      destination_uri = URI.parse(destination)
+      uri.path = destination_uri.path
+      uri.query = if destination_uri.query.present?
+                    "#{destination_uri.query}&token=#{token}"
+                  else
+                    "token=#{token}"
+                  end
+      uri.fragment = destination_uri.fragment
+    end
+  end
+
+  def confirm_your_email_address_subject
+    "Confirm your email address"
+  end
+
+  def manage_your_subscriptions_subject
+    "Manage your GOV.UK email subscriptions"
+  end
+
+  def confirm_your_email_address_body
     <<~BODY
       # Click the link to confirm your email address
 
@@ -44,16 +73,23 @@ def body
     BODY
   end
 
-  def link
-    Plek.new.website_uri.tap do |uri|
-      destination_uri = URI.parse(destination)
-      uri.path = destination_uri.path
-      uri.query = if destination_uri.query.present?
-                    "#{destination_uri.query}&token=#{token}"
-                  else
-                    "token=#{token}"
-                  end
-      uri.fragment = destination_uri.fragment
-    end
+  def manage_your_subscriptions_body
+    <<~BODY
+      # Manage your GOV.UK email subscriptions
+
+      You can manage which GOV.UK emails you receive at:
+
+      #{link}
+
+      You’ll need to confirm your email address before you can make any changes.
+
+      The link will stop working in 7 days.
+
+      # Didn’t request this email?
+
+      Ignore or delete this email if you didn’t request it. Your subscriptions won’t be changed.
+
+      [Contact GOV.UK](https://www.gov.uk/contact/govuk) if you have any problems with your email subscriptions.
+    BODY
   end
 end

spec/builders/subscriber_auth_email_builder_spec.rb

@@ -24,6 +24,28 @@
       expect(email.body).to include(link)
     end
 
+    it "has a subject line prompting the user to confirm their email" do
+      subject = "Confirm your email address"
+      email = call
+      expect(email.subject).to include(subject)
+    end
+
+    it "has body content prompting the user to confirm their email" do
+      line_one = "Click the link to confirm your email address"
+      line_two = "Confirm your email address"
+      line_three = "You need to do this to manage your GOV.UK email subscriptions. The link will stop working in 7 days."
+      line_four = "Didn’t request this email?"
+      line_five = "Ignore or delete this email if you didn’t request it. Your subscriptions won’t be changed."
+      line_six = "[Contact GOV.UK](https://www.gov.uk/contact/govuk) if you have any problems with your email subscriptions."
+      email = call
+      expect(email.body).to include(line_one)
+      expect(email.body).to include(line_two)
+      expect(email.body).to include(line_three)
+      expect(email.body).to include(line_four)
+      expect(email.body).to include(line_five)
+      expect(email.body).to include(line_six)
+    end
+
     context "when destination has a query string and fragment" do
       let(:destination) { "/destination?query#fragment" }
 
@@ -33,5 +55,35 @@
         expect(email.body).to include(link)
       end
     end
+
+    context "when destination is /manage" do
+      let(:destination) { "/manage/authenticate" }
+
+      it "has a subject line prompting the user to confirm their email" do
+        subject = "Manage your GOV.UK email subscriptions"
+        email = call
+        expect(email.subject).to include(subject)
+      end
+
+      it "has body content prompting unsubscription authentication" do
+        line_one = "Manage your GOV.UK email subscriptions"
+        line_two = "You can manage which GOV.UK emails you receive at"
+        line_three = "http://www.dev.gov.uk/manage/authenticate?token=secret"
+        line_four = "You’ll need to confirm your email address before you can make any changes."
+        line_five = "The link will stop working in 7 days."
+        line_six = "Didn’t request this email?"
+        line_seven = "Ignore or delete this email if you didn’t request it. Your subscriptions won’t be changed."
+        line_eight = "[Contact GOV.UK](https://www.gov.uk/contact/govuk) if you have any problems with your email subscriptions."
+        email = call
+        expect(email.body).to include(line_one)
+        expect(email.body).to include(line_two)
+        expect(email.body).to include(line_three)
+        expect(email.body).to include(line_four)
+        expect(email.body).to include(line_five)
+        expect(email.body).to include(line_six)
+        expect(email.body).to include(line_seven)
+        expect(email.body).to include(line_eight)
+      end
+    end
   end
 end