Cleanup "Source.tsx"

src/modules/source/services/Sources.ts

@@ -6,7 +6,14 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
-import { SourceIdInfo } from '@/modules/source/Source.types.ts';
+import {
+    SourceDisplayNameInfo,
+    SourceIdInfo,
+    SourceLanguageInfo,
+    SourceNsfwInfo,
+    SourceRepoInfo,
+} from '@/modules/source/Source.types.ts';
+import { langSortCmp } from '@/modules/core/utils/Languages.ts';
 
 export class Sources {
     static readonly LOCAL_SOURCE_ID = '0';
@@ -14,4 +21,47 @@ export class Sources {
     static isLocalSource(source: SourceIdInfo): boolean {
         return source.id === Sources.LOCAL_SOURCE_ID;
     }
+
+    static getLanguages(sources: SourceLanguageInfo[]): string[] {
+        return [...new Set(sources.map((source) => source.lang))].toSorted(langSortCmp);
+    }
+
+    static groupByLanguage<Source extends SourceLanguageInfo & SourceDisplayNameInfo>(
+        sources: Source[],
+    ): Record<string, Source[]> {
+        const sourcesByLanguage = Object.groupBy(sources, (source) => source.lang);
+        const sourcesBySortedLanguage = Object.entries(sourcesByLanguage).toSorted(([a], [b]) => langSortCmp(a, b));
+        const sortedSourcesBySortedLanguage = sourcesBySortedLanguage.map(([language, sourcesOfLanguage]) => [
+            language,
+            (sourcesOfLanguage ?? []).toSorted((a, b) => a.displayName.localeCompare(b.displayName)),
+        ]);
+
+        return Object.fromEntries(sortedSourcesBySortedLanguage);
+    }
+
+    static filter<Source extends SourceIdInfo & SourceLanguageInfo & SourceNsfwInfo>(
+        sources: Source[],
+        {
+            showNsfw,
+            languages,
+            keepLocalSource,
+        }: { showNsfw?: boolean; languages?: string[]; keepLocalSource?: boolean } = {},
+    ): Source[] {
+        return sources
+            .filter((source) => showNsfw || !source.isNsfw || (keepLocalSource && Sources.isLocalSource(source)))
+            .filter(
+                (source) =>
+                    !languages || languages.includes(source.lang) || (keepLocalSource && Sources.isLocalSource(source)),
+            );
+    }
+
+    static areFromMultipleRepos<Source extends SourceIdInfo & SourceRepoInfo>(sources: Source[]): boolean {
+        const repo = sources.find((source) => !!source.extension.repo)?.extension.repo;
+
+        if (!repo || !sources.length) {
+            return false;
+        }
+
+        return sources.some((source) => source.extension.repo !== repo && !Sources.isLocalSource(source));
+    }
 }