minimum necessary changes to get tag combiner pages running in DCR

Author: andrew-nowak

applications/conf/routes

@@ -136,6 +136,7 @@ GET        /$path<[\w\d-]*(/[\w\d-]*)?(/[\w\d-]*)?>.json
 GET        /$path<[\w\d-]*(/[\w\d-]*)?(/[\w\d-]*)?>                             controllers.IndexController.render(path)
 
 # Tag combiners
+GET        /$leftSide<[^+]+>+*rightSide.json                                    controllers.IndexController.renderCombiner(leftSide, rightSide)
 GET        /$leftSide<[^+]+>+*rightSide                                         controllers.IndexController.renderCombiner(leftSide, rightSide)
 
 # Google site verification

common/app/model/meta.scala

@@ -559,12 +559,25 @@ case class TagCombiner(
 
   private val webTitle: String = webTitleOverrides.getOrElse(id, s"${leftTag.name} + ${rightTag.name}")
 
+  val javascriptConfigOverrides: Map[String, JsValue] = Map(
+    ("keywords", JsString(List(leftTag.properties.webTitle, rightTag.properties.webTitle).mkString(","))),
+    ("keywordIds", JsString(List(leftTag.id, rightTag.id).mkString(","))),
+    (
+      "references",
+      JsArray(
+        (leftTag.properties.references ++ rightTag.properties.references).map(ref => Reference.toJavaScript(ref.id)),
+      ),
+    ),
+  )
+
   override val metadata: MetaData = MetaData.make(
     id = id,
     section = leftTag.metadata.section,
     webTitle = webTitle,
     pagination = pagination,
     description = Some(DotcomContentType.TagIndex.name),
+    javascriptConfigOverrides = javascriptConfigOverrides,
+    isFront = true,
     commercial = Some(
       // We only use the left tag for CommercialProperties
       CommercialProperties(

common/app/services/repositories.scala

@@ -80,7 +80,15 @@ trait Index extends ConciergeRepository {
             val tag2 = findTag(head.item, secondTag)
             if (tag1.isDefined && tag2.isDefined) {
               val page = TagCombiner(s"$leftSide+$rightSide", tag1.get, tag2.get, pagination(response))
-              Right(IndexPage(page, contents = trails, tags = Tags(Nil), date = DateTime.now, tzOverride = None))
+              Right(
+                IndexPage(
+                  page,
+                  contents = trails,
+                  tags = Tags(List(tag1.get, tag2.get)),
+                  date = DateTime.now,
+                  tzOverride = None,
+                ),
+              )
             } else {
               Left(NotFound)
             }