Add keywords param to Sonobi prebid (#1660)

* Add keywords param to Sonobi prebid

* Add changeset

* Check if keywords exist to perform a split

Author: deedeeh

.changeset/large-emus-sin.md

@@ -0,0 +1,5 @@
+---
+'@guardian/commercial': minor
+---
+
+Add Keywords parameter to Sonobi prebid

src/lib/header-bidding/prebid-types.ts

@@ -47,6 +47,7 @@ export type PrebidSonobiParams = {
 	dom_id: string;
 	appNexusTargeting: string;
 	pageViewId: string;
+	keywords: string[];
 	render?: string;
 };
 

src/lib/header-bidding/prebid/bid-config.ts

@@ -349,6 +349,9 @@ const sonobiBidder: (pageTargeting: PageTargeting) => PrebidBidder = (
 		dom_id: slotId,
 		appNexusTargeting: buildAppNexusTargeting(pageTargeting),
 		pageViewId: window.guardian.ophan.pageViewId,
+		keywords: window.guardian.config.page.keywords
+			? window.guardian.config.page.keywords.split(',')
+			: [],
 	}),
 });