add pagination support; add image fetch complement to Darwin Core API…

… call

src/modules/otus/services/TaxonWorks.js

@@ -1,5 +1,17 @@
 import { makeAPIRequest } from '@/utils/request'
 
+/**
+ * Generate query params for pagination.
+ * @param opt.per {number} - Number of items per page.
+ * @param opt.page {number} - Page number
+ * @returns {""|string}
+ */
+const perPage = (opt) => {
+  const { per, page } = opt ?? {}
+  const queryParams = [per && `per=${per}`, page && `page=${page}`].filter(Boolean).join("&")
+  return queryParams && `?${queryParams}` // prepend "?" if there are any query params
+}
+
 export default class TaxonWorks {
   static getTaxonNameCitations(taxonId, opt) {
     return makeAPIRequest.get(`/taxon_names/${taxonId}/inventory/catalog`, opt)
@@ -59,24 +71,13 @@ export default class TaxonWorks {
     return makeAPIRequest.get(`/otus/${otuId}/inventory/content`, opt)
   }
 
-  // Note that this could support multiple OTUs.
-  // The API takes a comma-separated list of OTU IDs.
-  static getCollectionObjects(otuId, opt) {
-    return makeAPIRequest.get(`/collection_objects?otu_id[]=${otuId}`, opt)
-    // See taxonworks/lib/collection_object/filter.rb Queries:CollectionObject:Filter for full list of options.
-    // However, none seems to change the result.
-    /*
-        @with_buffered_collecting_event = boolean_param(params, :with_buffered_collecting_event)
-        @with_buffered_determinations = boolean_param(params, :with_buffered_determinations)
-        @with_buffered_other_labels = boolean_param(params, :with_buffered_other_labels)
-     */
-    // return makeAPIRequest.get(`/collection_objects?otu_id[]=${otuId}&with_buffered_determination=true`, opt)
-    // return makeAPIRequest.get(`/collection_objects?otu_id[]=${otuId}&descendants=true`, opt)
-    // return makeAPIRequest.get(`/collection_objects?otu_id[]=${otuId}/dwc.json`, opt)
-  }
-
-  static getOtuInventoryDarwinCore(otuId, opt) {
-    return makeAPIRequest.get(`/otus/${otuId}/inventory/dwc.json`, opt)
+  /** The descendant taxa of an OTU, in Darwin Core format. */
+  static getDescendantsDarwinCore(otuId, opt) {
+    return makeAPIRequest.get(`/otus/${otuId}/inventory/dwc.json${perPage(opt)}`, opt)
+  }
+
+  static getDescendantsImageGallery(otuId, opt) {
+    return makeAPIRequest.get(`/otus/${otuId}/inventory/dwc_gallery.json${perPage(opt)}`, opt)
   }
 
   /** Load image info (thumbnail, etc) from a URL such as one in a Darwin Core 'associatedMedia' field. */