feat: Basic 認証の実装

src/pages/_middleware.ts

@@ -0,0 +1,21 @@
+import { NextRequest, NextResponse } from "next/server";
+
+export const middleware = (req: NextRequest) => {
+  const basicAuth = req.headers.get("authorization");
+
+  if (basicAuth) {
+    const auth = basicAuth.split(" ")[1];
+    const [user, password] = Buffer.from(auth, "base64").toString().split(":");
+
+    if (user === process.env.BASIC_AUTH_USER && password === process.env.BASIC_AUTH_PASSWORD) {
+      return NextResponse.next();
+    }
+  }
+
+  return new Response("Auth required", {
+    status: 401,
+    headers: {
+      "WWW-Authenticate": "Basic realm='Secure Area'",
+    }
+  });
+};