新增弹幕功能

src/app/api/danmaku/comment/route.ts

@@ -0,0 +1,102 @@
+// 获取弹幕 API 路由
+import { NextRequest, NextResponse } from 'next/server';
+
+import { getConfig } from '@/lib/config';
+
+export const runtime = 'nodejs';
+
+// 解析弹幕 XML 为 JSON
+function parseXmlDanmaku(xmlText: string): Array<{ p: string; m: string; cid: number }> {
+  const comments: Array<{ p: string; m: string; cid: number }> = [];
+
+  // 使用正则表达式提取所有 <d> 标签
+  const dTagRegex = /<d\s+p="([^"]+)"[^>]*>([^<]*)<\/d>/g;
+  let match;
+
+  while ((match = dTagRegex.exec(xmlText)) !== null) {
+    const p = match[1];
+    const m = match[2];
+
+    // 从 p 属性中提取 cid（弹幕ID）
+    const pParts = p.split(',');
+    const cid = pParts[7] ? parseInt(pParts[7]) : 0;
+
+    comments.push({
+      p,
+      m,
+      cid,
+    });
+  }
+
+  return comments;
+}
+
+export async function GET(request: NextRequest) {
+  try {
+    const searchParams = request.nextUrl.searchParams;
+    const episodeId = searchParams.get('episodeId');
+    const url = searchParams.get('url');
+
+    // 至少需要一个参数
+    if (!episodeId && !url) {
+      return NextResponse.json(
+        {
+          count: 0,
+          comments: [],
+        },
+        { status: 400 }
+      );
+    }
+
+    // 从数据库读取弹幕配置
+    const config = await getConfig();
+    const { DanmakuApiBase, DanmakuApiToken } = config.SiteConfig;
+
+    // 构建 API URL
+    const baseUrl =
+      DanmakuApiToken === '87654321'
+        ? DanmakuApiBase
+        : `${DanmakuApiBase}/${DanmakuApiToken}`;
+
+    let apiUrl: string;
+
+    if (episodeId) {
+      // 通过剧集 ID 获取弹幕 - 使用 XML 格式
+      apiUrl = `${baseUrl}/api/v2/comment/${episodeId}?format=xml`;
+    } else {
+      // 通过视频 URL 获取弹幕 - 使用 XML 格式
+      apiUrl = `${baseUrl}/api/v2/comment?url=${encodeURIComponent(url!)}&format=xml`;
+    }
+
+    const response = await fetch(apiUrl, {
+      method: 'GET',
+      headers: {
+        'Accept': 'application/xml, text/xml',
+      },
+    });
+
+    if (!response.ok) {
+      throw new Error(`HTTP error! status: ${response.status}`);
+    }
+
+    // 获取 XML 文本
+    const xmlText = await response.text();
+
+    // 解析 XML 为 JSON
+    const comments = parseXmlDanmaku(xmlText);
+
+    return NextResponse.json({
+      count: comments.length,
+      comments,
+    });
+  } catch (error) {
+    console.error('获取弹幕代理错误:', error);
+    return NextResponse.json(
+      {
+        count: 0,
+        comments: [],
+      },
+      { status: 500 }
+    );
+  }
+}