修复压缩节目单无法加载

src/app/api/live/epg/download/route.ts

@@ -0,0 +1,88 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+export const runtime = 'nodejs';
+
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url);
+    const epgUrl = searchParams.get('url');
+
+    if (!epgUrl) {
+      return NextResponse.json({ error: '缺少EPG URL参数' }, { status: 400 });
+    }
+
+    console.log('[EPG Download] Fetching:', epgUrl);
+
+    // 获取EPG文件
+    const response = await fetch(epgUrl, {
+      headers: {
+        'User-Agent': 'Mozilla/5.0',
+      },
+    });
+
+    if (!response.ok) {
+      return NextResponse.json({ error: 'EPG文件下载失败' }, { status: 500 });
+    }
+
+    // 检查是否是gzip压缩
+    const isGzip = epgUrl.endsWith('.gz') || response.headers.get('content-encoding') === 'gzip';
+
+    if (isGzip) {
+      console.log('[EPG Download] Decompressing gzip...');
+
+      // 读取所有数据
+      const reader = response.body?.getReader();
+      if (!reader) {
+        return NextResponse.json({ error: '无法读取响应' }, { status: 500 });
+      }
+
+      const chunks: Uint8Array[] = [];
+      while (true) {
+        const { done, value } = await reader.read();
+        if (done) break;
+        chunks.push(value);
+      }
+
+      // 合并所有chunks
+      const totalLength = chunks.reduce((acc, chunk) => acc + chunk.length, 0);
+      const allChunks = new Uint8Array(totalLength);
+      let offset = 0;
+      for (const chunk of chunks) {
+        allChunks.set(chunk, offset);
+        offset += chunk.length;
+      }
+
+      console.log('[EPG Download] Compressed size:', totalLength, 'bytes');
+
+      // 解压
+      const zlib = await import('zlib');
+      const decompressed = zlib.gunzipSync(Buffer.from(allChunks));
+      const decompressedText = decompressed.toString('utf-8');
+
+      console.log('[EPG Download] Decompressed size:', decompressedText.length, 'bytes');
+
+      // 返回解压后的XML
+      return new NextResponse(decompressedText, {
+        headers: {
+          'Content-Type': 'application/xml; charset=utf-8',
+          'Content-Disposition': 'attachment; filename="epg.xml"',
+        },
+      });
+    } else {
+      // 非压缩文件，直接返回
+      const text = await response.text();
+      return new NextResponse(text, {
+        headers: {
+          'Content-Type': 'application/xml; charset=utf-8',
+          'Content-Disposition': 'attachment; filename="epg.xml"',
+        },
+      });
+    }
+  } catch (error) {
+    console.error('[EPG Download] Error:', error);
+    return NextResponse.json(
+      { error: '下载EPG文件失败' },
+      { status: 500 }
+    );
+  }
+}