Merge pull request #2 from ut-code/feature/backend

簡単なチャットAPIを実装

Author: na-trium-144

app/chat/route.js

@@ -0,0 +1,35 @@
+import { NextResponse } from 'next/server';
+import { GoogleGenerativeAI } from '@google/generative-ai';
+
+
+const genAI = new GoogleGenerativeAI(process.env.API_KEY);
+
+export async function POST(request) {
+  const { message } = await request.json();
+
+
+  if (!message) {
+    return NextResponse.json(
+      { error: "メッセージがありません。" },
+      { status: 400 }
+    );
+  }
+
+  try {
+    const model = genAI.getGenerativeModel({ model: "gemini-1.5-flash" });
+    
+    const result = await model.generateContent(message);
+    const response = result.response;
+    const text = response.text();
+
+    return NextResponse.json({ response: text });
+
+  } catch (e) {
+
+    console.error("Error:", e);
+    return NextResponse.json(
+      { response: "エラーが発生しました。" },
+      { status: 500 }
+    );
+  }
+}

package-lock.json

@@ -10,6 +10,7 @@
     "format": "prettier --write app/"
   },
   "dependencies": {
+    "@google/generative-ai": "^0.24.1",
     "next": "15.4.5",
     "react": "19.1.0",
     "react-dom": "19.1.0",