refactor: 收口推荐流展示模型

src/components/rpg-entry/rpgEntryPublicGalleryViewModel.test.ts

@@ -3,8 +3,10 @@ import { expect, test } from 'vitest';
 import type { CustomWorldGalleryCard } from '../../../packages/shared/src/contracts/runtime';
 import {
   buildPlatformRankingEntries,
+  buildPlatformRecommendFeedEntries,
   buildPublicCategoryGroups,
   buildPublicGalleryCardKey,
+  dedupePlatformPublicGalleryEntries,
   filterPlatformWorkSearchResults,
   filterTodayPublishedEntries,
   getPlatformCategoryKindFilter,
@@ -13,6 +15,8 @@ import {
   getPlatformRankingMetricValue,
   matchesPlatformCategoryKindFilter,
   parsePlatformEntryTimestamp,
+  selectAdjacentPlatformRecommendEntry,
+  selectPlatformRecommendFeedWindow,
   sortPlatformCategoryEntries,
 } from './rpgEntryPublicGalleryViewModel';
 import type {
@@ -146,6 +150,100 @@ test('public gallery ViewModel dedupes merged public entries by latest source',
   });
 });
 
+test('public gallery ViewModel builds recommend feed from general public entries', () => {
+  const featuredPuzzle = buildPuzzleEntry({
+    profileId: 'shared',
+    worldName: '精选旧拼图',
+  });
+  const latestPuzzle = buildPuzzleEntry({
+    profileId: 'shared',
+    worldName: '最新拼图',
+  });
+  const edutainmentPuzzle = buildPuzzleEntry({
+    profileId: 'edutainment',
+    themeTags: ['寓教于乐'],
+  });
+  const jumpHopEntry = buildJumpHopEntry({ profileId: 'jump-hop' });
+
+  expect(
+    buildPlatformRecommendFeedEntries(
+      [featuredPuzzle, edutainmentPuzzle],
+      [latestPuzzle, jumpHopEntry],
+    ),
+  ).toEqual([latestPuzzle, jumpHopEntry]);
+  expect(
+    dedupePlatformPublicGalleryEntries([featuredPuzzle, latestPuzzle]),
+  ).toEqual([latestPuzzle]);
+});
+
+test('public gallery ViewModel selects recommend feed window with wraparound neighbors', () => {
+  const firstEntry = buildPuzzleEntry({ profileId: 'first' });
+  const secondEntry = buildJumpHopEntry({ profileId: 'second' });
+  const thirdEntry = buildWoodenFishEntry({ profileId: 'third' });
+  const entries = [firstEntry, secondEntry, thirdEntry];
+
+  expect(selectPlatformRecommendFeedWindow([], 'missing')).toEqual({
+    activeEntry: null,
+    activeEntryKey: null,
+    activeIndex: -1,
+    nextEntry: null,
+    previousEntry: null,
+  });
+  expect(selectPlatformRecommendFeedWindow([firstEntry], null)).toEqual({
+    activeEntry: firstEntry,
+    activeEntryKey: buildPublicGalleryCardKey(firstEntry),
+    activeIndex: 0,
+    nextEntry: null,
+    previousEntry: null,
+  });
+  expect(
+    selectPlatformRecommendFeedWindow(
+      entries,
+      buildPublicGalleryCardKey(secondEntry),
+    ),
+  ).toEqual({
+    activeEntry: secondEntry,
+    activeEntryKey: buildPublicGalleryCardKey(secondEntry),
+    activeIndex: 1,
+    nextEntry: thirdEntry,
+    previousEntry: firstEntry,
+  });
+
+  expect(selectPlatformRecommendFeedWindow(entries, 'missing')).toEqual({
+    activeEntry: firstEntry,
+    activeEntryKey: buildPublicGalleryCardKey(firstEntry),
+    activeIndex: 0,
+    nextEntry: secondEntry,
+    previousEntry: thirdEntry,
+  });
+  expect(selectPlatformRecommendFeedWindow(entries, null)).toEqual({
+    activeEntry: firstEntry,
+    activeEntryKey: buildPublicGalleryCardKey(firstEntry),
+    activeIndex: 0,
+    nextEntry: secondEntry,
+    previousEntry: thirdEntry,
+  });
+});
+
+test('public gallery ViewModel selects adjacent recommend entry without self-loop', () => {
+  const onlyEntry = buildPuzzleEntry({ profileId: 'only' });
+  const nextEntry = buildJumpHopEntry({ profileId: 'next' });
+
+  expect(
+    selectAdjacentPlatformRecommendEntry([onlyEntry], 1, 'missing'),
+  ).toBeNull();
+  expect(
+    selectAdjacentPlatformRecommendEntry(
+      [onlyEntry, nextEntry],
+      1,
+      buildPublicGalleryCardKey(onlyEntry),
+    ),
+  ).toBe(nextEntry);
+  expect(
+    selectAdjacentPlatformRecommendEntry([onlyEntry, nextEntry], -1, 'missing'),
+  ).toBe(nextEntry);
+});
+
 test('public gallery ViewModel searches compact work codes and ranks name prefix first', () => {
   const nameMatch = buildPuzzleEntry({
     profileId: 'name-match',