カテゴリの論文を一括保存する機能を追加

src/app/api/favorites/batch/route.ts

@@ -0,0 +1,74 @@
+import { getUserIdFromRequest } from "@/lib/auth-server";
+import { db, schema } from "@/lib/db";
+import { and, eq } from "drizzle-orm";
+import { NextRequest, NextResponse } from "next/server";
+
+// POST /api/favorites/batch - 複数論文を一括でお気に入りに追加
+export async function POST(request: NextRequest) {
+  const userId = await getUserIdFromRequest(request);
+  if (!userId) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  }
+
+  if (!db) {
+    return NextResponse.json(
+      { error: "Database not configured" },
+      { status: 500 }
+    );
+  }
+
+  try {
+    const body = await request.json();
+    const { paperIds, folderId } = body;
+
+    if (!Array.isArray(paperIds) || paperIds.length === 0) {
+      return NextResponse.json(
+        { error: "paperIds must be a non-empty array" },
+        { status: 400 }
+      );
+    }
+
+    // folderId が指定されている場合、自分のフォルダか検証
+    if (folderId) {
+      const folderCheck = await db
+        .select()
+        .from(schema.folders)
+        .where(
+          and(
+            eq(schema.folders.id, folderId),
+            eq(schema.folders.userId, userId)
+          )
+        );
+      if (folderCheck.length === 0) {
+        return NextResponse.json(
+          { error: "Folder not found or not authorized" },
+          { status: 403 }
+        );
+      }
+    }
+
+    // 一括挿入（重複は無視）
+    const values = paperIds.map((paperId: number) => ({
+      userId,
+      paperId,
+      folderId: folderId || null,
+    }));
+
+    const inserted = await db
+      .insert(schema.favorites)
+      .values(values)
+      .onConflictDoNothing()
+      .returning();
+
+    return NextResponse.json(
+      { added: inserted.length, total: paperIds.length },
+      { status: 201 }
+    );
+  } catch (error) {
+    console.error("Error batch adding favorites:", error);
+    return NextResponse.json(
+      { error: "Internal server error" },
+      { status: 500 }
+    );
+  }
+}

src/app/page.tsx

@@ -286,6 +286,7 @@ export default function Home() {
               <CategorizationResults
                 groupedPapers={groupedPapers}
                 categories={categorizationInfo.categories}
+                searchKeyword={keyword}
               />
             </motion.main>
           )}

src/components/app-sidebar.tsx

@@ -200,7 +200,7 @@ export function AppSidebar() {
                         <SidebarMenuSub>
                           {item.items?.map((subItem) => (
                             <SidebarMenuSubItem
-                              key={subItem.title}
+                              key={subItem.folderId || subItem.title}
                               className="group/sub-item relative"
                             >
                               <SidebarMenuSubButton asChild>