BDOG-237 Display source of outage page template

Author: colin-lamed

app/uk/gov/hmrc/cataloguefrontend/shuttering/ShutterServiceController.scala

@@ -140,16 +140,17 @@ class ShutterServiceController @Inject()(
                                    .outagePageByAppAndEnv(serviceName, step1Out.env)
                                ).map(_.collect { case Some(op) => op })
       outageMessageTemplate = outagePages
-                                .flatMap(_.templatedMessages)
+                                .flatMap(op => op.templatedMessages.map((op, _)))
                                 .headOption
       requiresOutageMessage = outageMessageTemplate.isDefined || outagePages.flatMap(_.warnings).nonEmpty
-      defaultOutageMessage  = outageMessageTemplate.fold("")(_.innerHtml)
+      outageMessageSrc      = outageMessageTemplate.map(_._1)
+      defaultOutageMessage  = outageMessageTemplate.fold("")(_._2.innerHtml)
       outagePageStatus      = shutterService.toOutagePageStatus(step1Out.serviceNames, outagePages)
       form2                 = step2Form.fill {
                                 val s2f = form.get
                                 if (s2f.outageMessage.isEmpty) s2f.copy(outageMessage = defaultOutageMessage) else s2f
                               }
-    } yield page2(form2, step1Out, requiresOutageMessage, defaultOutageMessage, outagePageStatus)
+    } yield page2(form2, step1Out, requiresOutageMessage, outageMessageSrc, defaultOutageMessage, outagePageStatus)
 
 
   def step2Get =

app/views/shuttering/shutterService/Page2.scala.html

@@ -15,7 +15,7 @@
  *@
 
 @import uk.gov.hmrc.cataloguefrontend.ViewMessages
-@import uk.gov.hmrc.cataloguefrontend.shuttering.{Environment, OutagePageStatus, ShutterStatusValue, ShutterState}
+@import uk.gov.hmrc.cataloguefrontend.shuttering.{Environment, OutagePage, OutagePageStatus, ShutterStatusValue, ShutterState}
 @import uk.gov.hmrc.cataloguefrontend.shuttering.ShutterServiceController.{Step1Out, Step2Form}
 @import helper._
 
@@ -24,6 +24,7 @@
 @( form                  : Form[Step2Form]
  , step1Out              : Step1Out
  , requiresOutageMessage : Boolean
+ , outageMessageSrc      : Option[OutagePage]
  , defaultOutageMessage  : String
  , outagePages           : Seq[OutagePageStatus]
  )(implicit request         : Request[_]
@@ -124,6 +125,7 @@ <h1>Shutter Service</h1>
                   , 'rows   -> 5
                   , 'cols   -> 60
                   )
+                  <p>@Html(outageMessageSrc.map(src => s"The templated value was extracted from the <a target='_blank' href='${src.outagePageURL}'>${src.serviceName} outage page</a>.").getOrElse(""))</p>
               </div>
               <div class="col-sm-4" style="display:table-cell; float:none; vertical-align: middle;">
                 <a id="back-btn" href="javascript:revertTemplate()" class="btn btn-default">