Fix transcripts: use API route for server-side fs

app/api/transcripts/route.ts

@@ -0,0 +1,74 @@
+import { NextRequest, NextResponse } from "next/server";
+import fs from "fs";
+import path from "path";
+
+const STORAGE_FILE = path.join(process.cwd(), "data", "transcripts.json");
+
+function ensureStorage() {
+  const dir = path.dirname(STORAGE_FILE);
+  if (!fs.existsSync(dir)) {
+    fs.mkdirSync(dir, { recursive: true });
+  }
+  if (!fs.existsSync(STORAGE_FILE)) {
+    fs.writeFileSync(STORAGE_FILE, "[]");
+  }
+}
+
+function getTranscripts() {
+  ensureStorage();
+  return JSON.parse(fs.readFileSync(STORAGE_FILE, "utf-8"));
+}
+
+function saveTranscripts(data: any[]) {
+  ensureStorage();
+  fs.writeFileSync(STORAGE_FILE, JSON.stringify(data, null, 2));
+}
+
+export async function GET() {
+  const transcripts = getTranscripts();
+  return NextResponse.json(transcripts);
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json();
+    const { videoUrl, videoId, title, transcript, categories, action } = body;
+    
+    if (action === "delete") {
+      const transcripts = getTranscripts().filter(t => t.videoId !== videoId);
+      saveTranscripts(transcripts);
+      return NextResponse.json({ success: true, transcripts });
+    }
+    
+    // Save or update transcript
+    let vid = videoId;
+    if (!vid && videoUrl) {
+      const match = videoUrl.match(/(?:v=|\/)([0-9A-Za-z_-]{11})/);
+      vid = match ? match[1] : videoUrl;
+    }
+    
+    const data = {
+      videoId: vid,
+      videoUrl: videoUrl || `https://www.youtube.com/watch?v=${vid}`,
+      title: title || `Video ${vid}`,
+      transcript: transcript || "",
+      categories: categories || [],
+      savedAt: new Date().toISOString()
+    };
+    
+    const transcripts = getTranscripts();
+    const existing = transcripts.findIndex(t => t.videoId === vid);
+    
+    if (existing >= 0) {
+      transcripts[existing] = data;
+    } else {
+      transcripts.unshift(data);
+    }
+    
+    saveTranscripts(transcripts);
+    return NextResponse.json({ success: true, transcripts });
+    
+  } catch (error) {
+    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
+  }
+}