Allow Category definitions to specify language to search in.

This will be entirely up to the homepage maintainer, and will override the user's "Search only in the this language" setting.

flow-typed/homepage.js

@@ -25,6 +25,7 @@ declare type RowDataItem = {
     limitClaimsPerChannel?: number,
     pageSize?: number,
     releaseTime?: string,
+    searchLanguages?: Array<string>,
   },
   route?: string,
   hideForUnauth?: boolean,

ui/component/claimListDiscover/view.jsx

@@ -44,6 +44,7 @@ type Props = {
   showHiddenByUser?: boolean,
   showNoSourceClaims?: boolean,
   tileLayout: boolean,
+  searchLanguages?: Array<string>,
   ignoreSearchInLanguage?: boolean,
 
   orderBy?: Array<string>, // Trending, New, Top
@@ -165,6 +166,7 @@ function ClaimListDiscover(props: Props) {
     maxPages,
     forceShowReposts = false,
     languageSetting,
+    searchLanguages,
     searchInLanguage,
     ignoreSearchInLanguage,
     limitClaimsPerChannel,
@@ -211,9 +213,14 @@ function ClaimListDiscover(props: Props) {
     new Set(mutedUris.concat(blockedUris).map((uri) => splitBySeparator(uri)[1]))
   );
 
+  // Precedence:
+  // - searchLanguages (per instance attribute)
+  // - urlParams
+  // - languageSetting (redux setting)
+  const language = searchLanguages ? searchLanguages.join(',') : languageSetting;
   const langParam = urlParams.get(CS.LANGUAGE_KEY) || null;
-  const searchInSelectedLangOnly = searchInLanguage && !ignoreSearchInLanguage;
+  const searchInSelectedLangOnly = Boolean(searchLanguages) || (searchInLanguage && !ignoreSearchInLanguage);
-  const languageParams = resolveLangForClaimSearch(languageSetting, searchInSelectedLangOnly, langParam);
+  const languageParams = resolveLangForClaimSearch(language, searchInSelectedLangOnly, langParam);
 
   let claimTypeParam = claimType || defaultClaimType || null;
   let streamTypeParam = streamType || defaultStreamType || null;

ui/page/discover/livestreamSection.jsx

@@ -8,7 +8,7 @@ import ClaimListDiscover from 'component/claimListDiscover';
 import { useIsMobile, useIsLargeScreen } from 'effects/use-screensize';
 import usePersistedState from 'effects/use-persisted-state';
 import { getLivestreamUris } from 'util/livestream';
-import { resolveLangForClaimSearch } from '../../util/default-languages';
+import { resolveLangForClaimSearch } from 'util/default-languages';
 
 const DEFAULT_LIVESTREAM_TILE_LIMIT = 8;
 const SECTION = Object.freeze({ COLLAPSED: 1, EXPANDED: 2 });
@@ -25,6 +25,7 @@ type Props = {
   channelIds?: Array<string>,
   activeLivestreams: ?LivestreamInfo,
   doFetchActiveLivestreams: (orderBy: ?Array<string>, lang: ?Array<string>) => void,
+  searchLanguages?: Array<string>,
   languageSetting?: string,
   searchInLanguage?: boolean,
   langParam?: string | null,
@@ -36,6 +37,7 @@ export default function LivestreamSection(props: Props) {
     channelIds,
     activeLivestreams,
     doFetchActiveLivestreams,
+    searchLanguages,
     languageSetting,
     searchInLanguage,
     langParam,
@@ -66,7 +68,9 @@ export default function LivestreamSection(props: Props) {
 
   React.useEffect(() => {
     // Fetch active livestreams on mount
-    const langCsv = resolveLangForClaimSearch(languageSetting, searchInLanguage, langParam);
+    const language = searchLanguages ? searchLanguages.join(',') : languageSetting;
+    const searchInSelectedLangOnly = Boolean(searchLanguages) || searchInLanguage;
+    const langCsv = resolveLangForClaimSearch(language, searchInSelectedLangOnly, langParam);
     const lang = langCsv ? langCsv.split(',') : null;
     doFetchActiveLivestreams(CS.ORDER_BY_NEW_VALUE, lang);
     // eslint-disable-next-line react-hooks/exhaustive-deps, (on mount only)

ui/page/discover/view.jsx

@@ -115,6 +115,7 @@ function DiscoverPage(props: Props) {
           channelIds={channelIds}
           activeLivestreams={activeLivestreams}
           doFetchActiveLivestreams={doFetchActiveLivestreams}
+          searchLanguages={dynamicRouteProps?.options?.searchLanguages}
           languageSetting={languageSetting}
           searchInLanguage={searchInLanguage}
           langParam={langParam}
@@ -214,6 +215,7 @@ function DiscoverPage(props: Props) {
         meta={getMeta()}
         hasSource
         forceShowReposts={dynamicRouteProps}
+        searchLanguages={dynamicRouteProps?.options?.searchLanguages}
       />
     </Page>
   );

ui/util/buildHomepage.js

@@ -21,6 +21,7 @@ export type HomepageCat = {
   tags?: Array<string>,
   pinnedUrls?: Array<string>,
   pinnedClaimIds?: Array<string>, // takes precedence over pinnedUrls
+  searchLanguages?: Array<string>,
   mixIn?: Array<string>,
 };
 
@@ -98,6 +99,7 @@ export const getHomepageRowForCat = (key: string, cat: HomepageCat) => {
       orderBy: orderValue,
       pageSize: cat.pageSize || undefined,
       limitClaimsPerChannel: limitClaims,
+      searchLanguages: cat.searchLanguages,
       releaseTime: `>${Math.floor(
         moment()
           .subtract(cat.daysOfContent || 30, 'days')