fix(bilibili): 修复了B站分P视频播放时只能播放第一P，且时长显示为视频总时长

在网页端播放多P视频时弹出界面选择需要播放的P数，ts里!play播放则只播放第一P

src/music/bilibili.test.ts

@@ -37,3 +37,128 @@ describe("BiliBiliProvider.search pagination", () => {
     expect(searchParams(get).page).toBe("1");
   });
 });
+
+describe("BiliBiliProvider multi-P support", () => {
+  it("parseBilibiliId extracts bvid and page correctly", async () => {
+    const { parseBilibiliId } = await import("./bilibili.js");
+    expect(parseBilibiliId("BV1yxHQeYEuE")).toEqual({ bvid: "BV1yxHQeYEuE", page: 1 });
+    expect(parseBilibiliId("BV1yxHQeYEuE?p=3")).toEqual({ bvid: "BV1yxHQeYEuE", page: 3 });
+    expect(parseBilibiliId("BV1yxHQeYEuE:p2")).toEqual({ bvid: "BV1yxHQeYEuE", page: 2 });
+    expect(parseBilibiliId("https://www.bilibili.com/video/BV1yxHQeYEuE?p=5")).toEqual({
+      bvid: "BV1yxHQeYEuE",
+      page: 5,
+    });
+    expect(parseBilibiliId("some-other-id")).toEqual({ bvid: "some-other-id", page: 1 });
+  });
+
+  function mockViewProvider(viewData: any, playUrlData?: any) {
+    const p = new BiliBiliProvider();
+    const get = vi.fn().mockImplementation((url: string, opts?: any) => {
+      if (url === "/x/web-interface/view") {
+        return Promise.resolve({ data: { data: viewData } });
+      }
+      if (url === "/x/player/playurl") {
+        return Promise.resolve({ data: { data: playUrlData ?? {} } });
+      }
+      return Promise.resolve({ data: {} });
+    });
+    (p as any).buvidInitialized = true;
+    (p as any).api = { get };
+    return { p, get };
+  }
+
+  const multiPViewData = {
+    bvid: "BV1multiP",
+    title: "测试多P教程",
+    pic: "http://i0.hdslb.com/bfs/archive/test.jpg",
+    duration: 300, // 总时长 300 秒 (120 + 180)
+    owner: { name: "UP主测试" },
+    pages: [
+      { cid: 10001, page: 1, part: "第一讲 入门", duration: 120 },
+      { cid: 10002, page: 2, part: "第二讲 进阶", duration: 180 },
+    ],
+  };
+
+  const singlePViewData = {
+    bvid: "BV1singleP",
+    title: "测试单P视频",
+    pic: "http://i0.hdslb.com/bfs/archive/single.jpg",
+    duration: 200,
+    owner: { name: "UP主测试" },
+    pages: [
+      { cid: 20001, page: 1, part: "测试单P视频", duration: 200 },
+    ],
+  };
+
+  it("getSongDetail for single-P video returns total duration and clean bvid", async () => {
+    const { p } = mockViewProvider(singlePViewData);
+    const song = await p.getSongDetail("BV1singleP");
+    expect(song).not.toBeNull();
+    expect(song!.id).toBe("BV1singleP");
+    expect(song!.name).toBe("测试单P视频");
+    expect(song!.duration).toBe(200);
+    expect(song!.platform).toBe("bilibili");
+  });
+
+  it("getSongDetail for multi-P video without ?p defaults to P1 with P1 duration", async () => {
+    const { p } = mockViewProvider(multiPViewData);
+    const song = await p.getSongDetail("BV1multiP");
+    expect(song).not.toBeNull();
+    expect(song!.id).toBe("BV1multiP?p=1");
+    expect(song!.name).toBe("测试多P教程 - P1 第一讲 入门");
+    expect(song!.duration).toBe(120); // P1 独立时长，而非总时长 300！
+    expect(song!.platform).toBe("bilibili");
+  });
+
+  it("getSongDetail for multi-P video with ?p=2 returns P2 with P2 duration", async () => {
+    const { p } = mockViewProvider(multiPViewData);
+    const song = await p.getSongDetail("BV1multiP?p=2");
+    expect(song).not.toBeNull();
+    expect(song!.id).toBe("BV1multiP?p=2");
+    expect(song!.name).toBe("测试多P教程 - P2 第二讲 进阶");
+    expect(song!.duration).toBe(180); // P2 独立时长
+    expect(song!.platform).toBe("bilibili");
+  });
+
+  it("getVideoParts returns all parts with duration and cid", async () => {
+    const { p } = mockViewProvider(multiPViewData);
+    const partsResult = await p.getVideoParts("BV1multiP");
+    expect(partsResult).not.toBeNull();
+    expect(partsResult!.bvid).toBe("BV1multiP");
+    expect(partsResult!.title).toBe("测试多P教程");
+    expect(partsResult!.parts).toHaveLength(2);
+    expect(partsResult!.parts[0]).toEqual({
+      part: 1,
+      cid: 10001,
+      title: "第一讲 入门",
+      duration: 120,
+    });
+    expect(partsResult!.parts[1]).toEqual({
+      part: 2,
+      cid: 10002,
+      title: "第二讲 进阶",
+      duration: 180,
+    });
+  });
+
+  it("getSongUrl requests playurl with correct cid for specific part", async () => {
+    const playUrlResponse = {
+      dash: {
+        audio: [
+          { bandwidth: 64000, baseUrl: "http://audio.64k.test" },
+          { bandwidth: 320000, baseUrl: "http://audio.320k.test" },
+        ],
+      },
+    };
+    const { p, get } = mockViewProvider(multiPViewData, playUrlResponse);
+
+    const result = await p.getSongUrl("BV1multiP?p=2");
+    expect(result).not.toBeNull();
+    expect(result!.url).toBe("http://audio.320k.test");
+
+    const playurlCall = get.mock.calls.find((c: any[]) => c[0] === "/x/player/playurl");
+    expect(playurlCall).toBeTruthy();
+    expect(playurlCall![1].params.cid).toBe(10002); // 准确传入 P2 的 cid
+    expect(playurlCall![1].params.bvid).toBe("BV1multiP"); // 纯净 bvid
+  });
+});

src/music/bilibili.ts

@@ -27,6 +27,38 @@ const WBI_MIXIN_KEY_ENC_TAB = [
 
 const WBI_KEY_TTL_MS = 6 * 60 * 60 * 1000; // wbi keys rotate ~daily; refresh every 6h
 
+export interface BiliVideoPart {
+  part: number;
+  cid: number;
+  title: string;
+  duration: number;
+}
+
+export interface BiliVideoPartsResult {
+  bvid: string;
+  title: string;
+  coverUrl: string;
+  artist: string;
+  parts: BiliVideoPart[];
+}
+
+/**
+ * 解析带有分P信息的 B站 ID 或 URL。
+ * 支持形如 "BVxxxx", "BVxxxx?p=2", "BVxxxx:p2" 以及完整 URL 等格式，默认 page 为 1。
+ */
+export function parseBilibiliId(songId: string): { bvid: string; page: number } {
+  const str = (songId ?? "").trim();
+  const bvMatch = str.match(/BV[0-9A-Za-z]+/i);
+  if (!bvMatch) {
+    return { bvid: str, page: 1 };
+  }
+  const bvid = bvMatch[0];
+  const pageMatch = str.match(/[?&]p=(\d+)|:p?(\d+)/i);
+  const pageStr = pageMatch ? (pageMatch[1] ?? pageMatch[2]) : undefined;
+  const page = pageStr ? parseInt(pageStr, 10) : 1;
+  return { bvid, page: Math.max(1, page) };
+}
+
 export class BiliBiliProvider implements MusicProvider {
   readonly platform = "bilibili" as const;
   private api: AxiosInstance;
@@ -192,18 +224,41 @@ export class BiliBiliProvider implements MusicProvider {
   }
 
   async getSongDetail(songId: string): Promise<Song | null> {
+    const { bvid, page } = parseBilibiliId(songId);
     try {
       const res = await this.api.get("/x/web-interface/view", {
-        params: { bvid: songId },
+        params: { bvid },
         headers: this.cookieHeaders,
       });
 
       const data = res.data?.data;
       if (!data) return null;
 
-      // Cache cid for later audio URL fetching
-      if (data.pages?.[0]?.cid) {
-        this.cidCache.set(songId, data.pages[0].cid);
+      const pages = data.pages ?? [];
+      // 缓存所有分P的 cid 映射
+      for (const p of pages) {
+        this.cidCache.set(`${bvid}?p=${p.page}`, p.cid);
+      }
+      if (pages[0]?.cid) {
+        this.cidCache.set(bvid, pages[0].cid);
+      }
+
+      const targetPage = pages.find((p: any) => p.page === page) ?? pages[0];
+
+      // 若为多P视频，返回对应分P的名称与独立时长
+      if (pages.length > 1 && targetPage) {
+        const partTitle = targetPage.part && targetPage.part !== data.title
+          ? `${data.title} - P${targetPage.page} ${targetPage.part}`
+          : `${data.title} (P${targetPage.page})`;
+        return {
+          id: `${bvid}?p=${targetPage.page}`,
+          name: partTitle,
+          artist: data.owner?.name ?? "",
+          album: "",
+          duration: targetPage.duration ?? 0,
+          coverUrl: this.normalizeCover(data.pic ?? ""),
+          platform: "bilibili" as const,
+        };
       }
 
       return {
@@ -211,7 +266,7 @@ export class BiliBiliProvider implements MusicProvider {
         name: data.title ?? "",
         artist: data.owner?.name ?? "",
         album: "",
-        duration: data.duration ?? 0,
+        duration: targetPage?.duration ?? data.duration ?? 0,
         coverUrl: this.normalizeCover(data.pic ?? ""),
         platform: "bilibili" as const,
       };
@@ -220,9 +275,47 @@ export class BiliBiliProvider implements MusicProvider {
     }
   }
 
+  /** 获取视频所有分P列表 */
+  async getVideoParts(bvid: string): Promise<BiliVideoPartsResult | null> {
+    const { bvid: cleanBvid } = parseBilibiliId(bvid);
+    try {
+      const res = await this.api.get("/x/web-interface/view", {
+        params: { bvid: cleanBvid },
+        headers: this.cookieHeaders,
+      });
+
+      const data = res.data?.data;
+      if (!data) return null;
+
+      const pages = data.pages ?? [];
+      for (const p of pages) {
+        this.cidCache.set(`${cleanBvid}?p=${p.page}`, p.cid);
+      }
+      if (pages[0]?.cid) {
+        this.cidCache.set(cleanBvid, pages[0].cid);
+      }
+
+      return {
+        bvid: cleanBvid,
+        title: data.title ?? "",
+        coverUrl: this.normalizeCover(data.pic ?? ""),
+        artist: data.owner?.name ?? "",
+        parts: pages.map((p: any) => ({
+          part: p.page,
+          cid: p.cid,
+          title: p.part ?? `P${p.page}`,
+          duration: p.duration ?? 0,
+        })),
+      };
+    } catch {
+      return null;
+    }
+  }
+
   /** Get CID for a bvid, using cache when available */
-  private async getCid(bvid: string): Promise<number | null> {
-    const cached = this.cidCache.get(bvid);
+  private async getCid(bvid: string, page = 1): Promise<number | null> {
+    const key = page > 1 ? `${bvid}?p=${page}` : bvid;
+    const cached = this.cidCache.get(key) ?? (page === 1 ? this.cidCache.get(`${bvid}?p=1`) : undefined);
     if (cached) return cached;
 
     // Limit cache size to prevent unbounded growth
@@ -231,20 +324,22 @@ export class BiliBiliProvider implements MusicProvider {
       if (firstKey) this.cidCache.delete(firstKey);
     }
 
-    const detail = await this.getSongDetail(bvid);
+    const songId = page > 1 ? `${bvid}?p=${page}` : bvid;
+    const detail = await this.getSongDetail(songId);
     if (!detail) return null;
-    return this.cidCache.get(bvid) ?? null;
+    return this.cidCache.get(key) ?? this.cidCache.get(`${bvid}?p=${page}`) ?? this.cidCache.get(bvid) ?? null;
   }
 
   async getSongUrl(songId: string, _quality?: string): Promise<SongUrlResult | null> {
-    const cid = await this.getCid(songId);
+    const { bvid, page } = parseBilibiliId(songId);
+    const cid = await this.getCid(bvid, page);
     if (!cid) return null;
 
     try {
       const res = await this.api.get("/x/player/playurl", {
         params: {
           cid,
-          bvid: songId,
+          bvid,
           fnval: 16, // DASH format
         },
         headers: this.cookieHeaders,