refactor(feed): lift the sort vocabulary out of Feed into lib/feedSort

The active-filter chips need to label a sort, and parseSort/SORT_MAP were module-private in Feed. Pure move, no behaviour change.
2026-07-15 22:03:40 +02:00
parent 3596d83acd
commit 837b48cbfa
2 changed files with 69 additions and 26 deletions
@@ -0,0 +1,61 @@
+// The feed's sort vocabulary. `FeedFilters.sort` is a single wire string ("newest", "views_asc",
+// …); the UI thinks in a key + direction. Kept here rather than inside Feed so the active-filter
+// chips can label a sort without re-deriving the mapping.
+
+export type SortKey =
+  | "date"
+  | "popular"
+  | "duration"
+  | "title"
+  | "subscribers"
+  | "priority"
+  | "shuffle"
+  | "relevance";
+
+export const SORT_KEYS: SortKey[] = [
+  "date",
+  "popular",
+  "duration",
+  "title",
+  "subscribers",
+  "priority",
+  "shuffle",
+];
+
+/** Sorts with no meaningful asc/desc flip. */
+export const DIRECTIONLESS: SortKey[] = ["shuffle", "relevance"];
+
+const SORT_MAP: Record<Exclude<SortKey, "shuffle" | "relevance">, { asc: string; desc: string }> = {
+  date: { desc: "newest", asc: "oldest" },
+  popular: { desc: "views", asc: "views_asc" },
+  duration: { desc: "duration_desc", asc: "duration_asc" },
+  title: { asc: "title", desc: "title_desc" },
+  subscribers: { desc: "subscribers", asc: "subscribers_asc" },
+  priority: { desc: "priority", asc: "priority_asc" },
+};
+
+export const SORT_DEFAULT_DIR: Record<
+  Exclude<SortKey, "shuffle" | "relevance">,
+  "asc" | "desc"
+> = {
+  date: "desc",
+  popular: "desc",
+  duration: "desc",
+  title: "asc",
+  subscribers: "desc",
+  priority: "desc",
+};
+
+export function parseSort(s: string): { key: SortKey; dir: "asc" | "desc" } {
+  if (s === "shuffle" || s === "relevance") return { key: s, dir: "desc" };
+  for (const k of Object.keys(SORT_MAP) as (keyof typeof SORT_MAP)[]) {
+    if (SORT_MAP[k].asc === s) return { key: k, dir: "asc" };
+    if (SORT_MAP[k].desc === s) return { key: k, dir: "desc" };
+  }
+  return { key: "date", dir: "desc" };
+}
+
+export function buildSort(key: SortKey, dir: "asc" | "desc"): string {
+  if (key === "shuffle" || key === "relevance") return key;
+  return SORT_MAP[key][dir];
+}