#434

frontend/src/lib/counts.ts

@@ -206,10 +206,16 @@ export const selectedCountColumns = (
     params: URLSearchParams,
     definition?: CountsDefinition,
 ): CountColumn[] => {
-  const selected = params.has ('columns') ? params.get ('columns')!.split (',') :
-      columnsForCounts (resource, definition).filter (key => ![
-	  'thumbnail', 'original_created_from', 'original_created_before']
-	  .includes (key))
+  const common = ['resource_id', 'version_no', 'event_type', 'user', 'created_at']
+  const defaults: Record<CountsResource, string[]> = {
+      posts: ['title', 'url', 'tags', 'parents', 'video_ms'],
+      tags: ['name', 'category', 'aliases', 'parents'],
+      nico_tags: ['name', 'linked_tags'],
+      tag_descriptions: ['language_code', 'body', 'source_language_code'],
+      tag_groups: ['name', 'description', 'members'],
+      materials: ['url', 'source_kind', 'tag_id'] }
+  const selected = params.has ('columns') ? params.get ('columns')!.split (',')
+      : [...common, ...defaults[resource]]
   return orderedCountFields (fieldsForCounts (resource, definition), params)
       .map (field => field.key as CountColumn).filter (key => selected.includes (key))
 }
@@ -223,9 +229,8 @@ export const countChildPaths = (fields: CountField[], prefix = ''): string[] =>
 
 
 export const selectedCountChildren = (params: URLSearchParams): Set<string> =>
-    new Set (params.has ('children') ? params.get ('children')!.split (',') :
-	Object.entries (nested).flatMap (([key, fields]) =>
-	    countChildPaths (fields ?? [], key)))
+    new Set (params.has ('children') ? params.get ('children')!.split (',')
+	: ['tags.name', 'parents.id', 'aliases.name', 'members.tagId'])
 
 
 export const readCountSort = (value: string | null): CountSort[] =>
@@ -342,15 +347,32 @@ export const exportCounts = (
     headers: string[],
     labels: Record<string, string>,
     onError?: () => void,
-): Promise<void> => {
+): Promise<void> => apiDownload ('/counts/export', countsExportPayload (
+    resource, params, format, columns, headers, labels), locale, onError)
+
+
+export const countsExportPayload = (
+    resource: CountsResource,
+    params: URLSearchParams,
+    format: 'json' | 'csv',
+    columns: string[],
+    headers: string[],
+    labels: Record<string, string>,
+    definition?: CountsDefinition,
+): Record<string, string> => {
   const payload = new URLSearchParams (params)
+  if (!payload.has ('children'))
+  {
+    const selected = selectedCountChildren (params)
+    payload.set ('children', countChildPaths (fieldsForCounts (resource, definition))
+	.filter (path => selected.has (path)).join (','))
+  }
   payload.delete ('current')
   payload.delete ('row_numbers')
   if (isCountsState (params) && countsUseLatest (params)) payload.delete ('at')
-  return apiDownload ('/counts/export', {
-      ...Object.fromEntries (payload), resource, format,
+  return { ...Object.fromEntries (payload), resource, format,
       columns: columns.join (','), headers: JSON.stringify (headers),
-      labels: JSON.stringify (labels) }, locale, onError)
+      labels: JSON.stringify (labels) }
 }