From cab19672e0136da9ef1d494ac40d76164479f7d3 Mon Sep 17 00:00:00 2001
From: gaoziman <2942894660@qq.com>
Date: Mon, 22 Dec 2025 21:57:25 +0800
Subject: [PATCH] =?UTF-8?q?feat(API):=20=E6=B7=BB=E5=8A=A0=E8=A7=86?=
 =?UTF-8?q?=E9=A2=91=E9=80=89=E9=9B=86=E4=BF=A1=E6=81=AF=E8=8E=B7=E5=8F=96?=
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- 新增 /api/video/episodes 端点
- 支持解析B站视频链接（BV号和AV号格式）
- 调用B站 API 获取视频分P信息
- 返回选集列表包含: 分P编号、标题、时长、cid等
- 对非B站视频返回空选集列表
---
 src/app/api/video/episodes/route.ts | 149 ++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 src/app/api/video/episodes/route.ts

diff --git a/src/app/api/video/episodes/route.ts b/src/app/api/video/episodes/route.ts
new file mode 100644
index 0000000..6f4ddf5
--- /dev/null
+++ b/src/app/api/video/episodes/route.ts
@@ -0,0 +1,149 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+/**
+ * 视频选集信息
+ */
+interface VideoEpisode {
+  page: number;       // 分P编号，从1开始
+  part: string;       // 分P标题
+  duration: number;   // 时长（秒）
+  cid?: number;       // B站视频分片ID
+}
+
+/**
+ * B站 API 返回的视频详情结构
+ */
+interface BilibiliVideoResponse {
+  code: number;
+  message: string;
+  data?: {
+    bvid: string;
+    title: string;
+    pages: {
+      cid: number;
+      page: number;
+      part: string;
+      duration: number;
+    }[];
+  };
+}
+
+/**
+ * 从 URL 中解析 B站视频 ID
+ */
+function parseBilibiliUrl(url: string): { bvid?: string; aid?: string } | null {
+  try {
+    // BV号格式: bilibili.com/video/BVxxxxx
+    const bvMatch = url.match(/bilibili\.com\/video\/(BV[\w]+)/i);
+    if (bvMatch) {
+      return { bvid: bvMatch[1] };
+    }
+
+    // AV号格式: bilibili.com/video/avxxxxx
+    const avMatch = url.match(/bilibili\.com\/video\/av(\d+)/i);
+    if (avMatch) {
+      return { aid: avMatch[1] };
+    }
+
+    // 短链接格式: b23.tv/xxxxx (需要跟随重定向)
+    // 暂不支持，返回 null
+
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * GET /api/video/episodes
+ * 获取视频选集列表
+ *
+ * Query params:
+ * - url: 视频链接
+ */
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const videoUrl = searchParams.get('url');
+
+    if (!videoUrl) {
+      return NextResponse.json(
+        { error: '缺少 url 参数' },
+        { status: 400 }
+      );
+    }
+
+    // 解析视频 URL
+    const videoId = parseBilibiliUrl(videoUrl);
+
+    if (!videoId) {
+      // 不是 B站视频或无法解析，返回空选集
+      return NextResponse.json({
+        platform: 'unknown',
+        episodes: [],
+        totalEpisodes: 0,
+      });
+    }
+
+    // 构建 B站 API 请求 URL
+    let apiUrl = 'https://api.bilibili.com/x/web-interface/view?';
+    if (videoId.bvid) {
+      apiUrl += `bvid=${videoId.bvid}`;
+    } else if (videoId.aid) {
+      apiUrl += `aid=${videoId.aid}`;
+    }
+
+    // 调用 B站 API
+    const response = await fetch(apiUrl, {
+      headers: {
+        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
+        'Referer': 'https://www.bilibili.com/',
+      },
+    });
+
+    if (!response.ok) {
+      console.error('[API/video/episodes] B站 API 请求失败:', response.status);
+      return NextResponse.json({
+        platform: 'bilibili',
+        episodes: [],
+        totalEpisodes: 0,
+        error: 'B站 API 请求失败',
+      });
+    }
+
+    const data: BilibiliVideoResponse = await response.json();
+
+    if (data.code !== 0 || !data.data) {
+      console.error('[API/video/episodes] B站 API 返回错误:', data.message);
+      return NextResponse.json({
+        platform: 'bilibili',
+        episodes: [],
+        totalEpisodes: 0,
+        error: data.message || '获取视频信息失败',
+      });
+    }
+
+    // 提取选集信息
+    const episodes: VideoEpisode[] = data.data.pages.map((page) => ({
+      page: page.page,
+      part: page.part,
+      duration: page.duration,
+      cid: page.cid,
+    }));
+
+    return NextResponse.json({
+      platform: 'bilibili',
+      bvid: data.data.bvid,
+      title: data.data.title,
+      episodes,
+      totalEpisodes: episodes.length,
+    });
+
+  } catch (error) {
+    console.error('[API/video/episodes] 错误:', error);
+    return NextResponse.json(
+      { error: '获取选集信息失败' },
+      { status: 500 }
+    );
+  }
+}