Allow customizing Carbon Ads format

Carbon Ads now supports a new Cover format, which can be forced using an extra query parameter.

assets/javascripts/discourse/components/carbonads-ad.gjs

@@ -5,18 +5,23 @@ import AdComponent from "./ad-component";
 export default class CarbonadsAd extends AdComponent {
   serve_id = null;
   placement = null;
+  format = null;
 
   init() {
     this.set("serve_id", this.siteSettings.carbonads_serve_id);
     this.set("placement", this.siteSettings.carbonads_placement);
+    this.set("format", this.siteSettings.carbonads_format);
     super.init();
   }
 
-  @discourseComputed("serve_id", "placement")
-  url(serveId, placement) {
-    return htmlSafe(
-      `//cdn.carbonads.com/carbon.js?serve=${serveId}&placement=${placement}`
-    );
+  @discourseComputed("serve_id", "placement", "format")
+  url(serveId, placement, format) {
+    let baseUrl = `//cdn.carbonads.com/carbon.js?serve=${serveId}&placement=${placement}`;
+    if (format) {
+      baseUrl += `&format=${format}`;
+    }
+
+    return htmlSafe(baseUrl);
   }
 
   @discourseComputed

config/locales/server.en.yml

@@ -97,6 +97,7 @@ en:
 
     carbonads_serve_id: "Your Carbon Ads Serve ID"
     carbonads_placement: "Your Carbon Ads Placement"
+    carbonads_format: "Your Carbon Ads Format"
     carbonads_through_trust_level: "Show your ads to users based on trust levels. Users with trust level higher than this value will not see ads."
     carbonads_exclude_groups: "Ads will not be shown to members of these groups"
     carbonads_topic_list_top_enabled: "Show an ad above the topic list"

config/settings.yml

@@ -438,6 +438,12 @@ carbonads_plugin:
   carbonads_placement:
     client: true
     default: ""
+  carbonads_format:
+    client: true
+    default: "responsive"
+    choices:
+      - responsive
+      - cover
   carbonads_through_trust_level:
     client: true
     default: 2