Separate route and recent imagery acquisition from application assembly

src/app/layers/directions.js

@@ -1,12 +1,6 @@
 import { createApplicationDirectionsLayer } from '../../data/directions.js';
 
-/**
- * Construct one Directions layer using the application scene owners.
- *
- * It takes no data source: a route is fetched from `/api/route` when the
- * operator places both endpoints, so there is nothing to supply up front.
- * @returns {object} A fresh layer instance for this catalog.
- */
-export function createApplicationDirections() {
-  return createApplicationDirectionsLayer();
+/** Construct Directions with application scene owners and an explicit route source. */
+export function createApplicationDirections({ source }) {
+  return createApplicationDirectionsLayer({ source });
 }

src/app/layers/recentImagery.js

@@ -3,17 +3,17 @@ import { createRecentImageryRenderer } from '../../layers/recentImagery/renderin
 import { createThumbnailLoader } from '../../layers/recentImagery/thumbnails.js';
 import { governorRequestRender } from '../../renderGovernor.js';
 
-/**
- * Construct the Recent Imagery layer with the real GIBS renderer and the
- * browser thumbnail loader. It takes no data source: the catalog is NASA
- * CMR and the tiles are GIBS, both browser-direct and keyless.
- * @returns {object} A fresh layer instance for this catalog.
- */
-export function createApplicationRecentImagery() {
+/** Construct imagery presentation over one explicitly supplied acquisition source. */
+export function createApplicationRecentImagery({ source }) {
   return createRecentImageryLayer({
+    catalog: { searchHls: (...args) => source.searchHls(...args) },
     renderer: createRecentImageryRenderer({
       requestRender: governorRequestRender,
+      tileTemplate: (...args) => source.getTileTemplate(...args),
+      credit: source.credit || source.label || 'Imagery',
+    }),
+    thumbnails: createThumbnailLoader({
+      requestThumbnail: (...args) => source.getThumbnail(...args),
     }),
-    thumbnails: createThumbnailLoader(),
   });
 }