增加桜色动漫数据源

src/lib/bangumi.client.ts

@@ -1,6 +1,26 @@
 'use client';
 
-export type AnimeDataSource = 'direct' | 'server-proxy' | 'custom-baseurl';
+export type AnimeDataSource =
+  | 'direct'
+  | 'server-proxy'
+  | 'custom-baseurl'
+  | 'sakura';
+
+/** 桜色镜像站：全域名镜像 bgm.tv → bangumi.lol */
+export const BANGUMI_SAKURA_API_BASE_URL = 'https://api.bangumi.lol';
+export const BANGUMI_SAKURA_SITE_URL = 'https://bangumi.lol';
+export const BANGUMI_OFFICIAL_SITE_URL = 'https://bgm.tv';
+
+export function isValidAnimeDataSource(
+  value: string | null | undefined
+): value is AnimeDataSource {
+  return (
+    value === 'direct' ||
+    value === 'server-proxy' ||
+    value === 'custom-baseurl' ||
+    value === 'sakura'
+  );
+}
 
 export interface BangumiCalendarData {
   weekday: {
@@ -63,22 +83,14 @@ function getPrimaryAnimeDataSource(): AnimeDataSource {
   const saved = localStorage.getItem(
     'animeDataSource'
   ) as AnimeDataSource | null;
-  if (
-    saved === 'direct' ||
-    saved === 'server-proxy' ||
-    saved === 'custom-baseurl'
-  ) {
+  if (isValidAnimeDataSource(saved)) {
     return saved;
   }
 
   const runtimeValue = getRuntimeConfig().BANGUMI_DATA_SOURCE as
     | AnimeDataSource
     | undefined;
-  if (
-    runtimeValue === 'direct' ||
-    runtimeValue === 'server-proxy' ||
-    runtimeValue === 'custom-baseurl'
-  ) {
+  if (isValidAnimeDataSource(runtimeValue)) {
     return runtimeValue;
   }
 
@@ -94,10 +106,7 @@ function getBackupAnimeDataSource(
   const saved = localStorage.getItem(
     'animeDataSourceBackup'
   ) as AnimeDataSource | null;
-  const backup =
-    saved === 'direct' || saved === 'server-proxy' || saved === 'custom-baseurl'
-      ? saved
-      : 'server-proxy';
+  const backup = isValidAnimeDataSource(saved) ? saved : 'server-proxy';
 
   return backup === primary ? null : backup;
 }
@@ -120,12 +129,23 @@ function buildBangumiUrl(source: AnimeDataSource, path: string): string {
       }
       return `${customBaseUrl}${normalizedPath}`;
     }
+    case 'sakura':
+      return `${BANGUMI_SAKURA_API_BASE_URL}${normalizedPath}`;
     case 'direct':
     default:
       return `${BANGUMI_OFFICIAL_BASE_URL}${normalizedPath}`;
   }
 }
 
+/** 按当前动漫数据源生成 Bangumi 条目外链（桜色镜像站 → bangumi.lol） */
+export function getBangumiSubjectUrl(id: string | number): string {
+  const origin =
+    getPrimaryAnimeDataSource() === 'sakura'
+      ? BANGUMI_SAKURA_SITE_URL
+      : BANGUMI_OFFICIAL_SITE_URL;
+  return `${origin}/subject/${encodeURIComponent(String(id))}`;
+}
+
 async function fetchBangumiJson<T>(
   source: AnimeDataSource,
   path: string