调整视频源脚本播放流程

src/app/api/source-script/play/route.ts

@@ -0,0 +1,68 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+import { getAuthInfoFromCookie } from '@/lib/auth';
+import {
+  parseScriptPlayUrlValue,
+  resolveSavedScriptPlayUrl,
+} from '@/lib/source-script';
+
+export const runtime = 'nodejs';
+
+/**
+ * GET /api/source-script/play?key=xxx&sourceId=xxx&lineId=xxx&episodeIndex=0&playUrl=base64url&format=json
+ * format=json: 返回 JSON 格式（用于 play 页面）
+ * 默认: 返回重定向（用于播放器或外部调用）
+ */
+export async function GET(request: NextRequest) {
+  try {
+    const authInfo = getAuthInfoFromCookie(request);
+    if (!authInfo || !authInfo.username) {
+      return NextResponse.json({ error: '未授权' }, { status: 401 });
+    }
+
+    const { searchParams } = new URL(request.url);
+    const key = searchParams.get('key');
+    const sourceId = searchParams.get('sourceId');
+    const lineId = searchParams.get('lineId') || 'default';
+    const episodeIndexRaw = searchParams.get('episodeIndex');
+    const playUrlEncoded = searchParams.get('playUrl');
+    const format = searchParams.get('format');
+
+    if (!key || !sourceId || !episodeIndexRaw || !playUrlEncoded) {
+      return NextResponse.json({ error: '缺少参数' }, { status: 400 });
+    }
+
+    const episodeIndex = Number.parseInt(episodeIndexRaw, 10);
+    if (!Number.isInteger(episodeIndex) || episodeIndex < 0) {
+      return NextResponse.json({ error: '无效的 episodeIndex' }, { status: 400 });
+    }
+
+    const playUrl = parseScriptPlayUrlValue(playUrlEncoded);
+    if (!playUrl) {
+      return NextResponse.json({ error: '无效的播放地址' }, { status: 400 });
+    }
+
+    const result = await resolveSavedScriptPlayUrl({
+      key,
+      sourceId,
+      lineId,
+      episodeIndex,
+      playUrl,
+    });
+
+    if (!result.url || result.url.trim() === '') {
+      throw new Error('获取到的播放链接为空');
+    }
+
+    if (format === 'json') {
+      return NextResponse.json(result);
+    }
+
+    return NextResponse.redirect(result.url);
+  } catch (error) {
+    return NextResponse.json(
+      { error: (error as Error).message },
+      { status: 500 }
+    );
+  }
+}