feat: patreon check

src/app/api/patreon/auth/[code]/route.ts

@@ -0,0 +1,17 @@
+import { NextResponse } from 'next/server';
+
+export async function GET(
+  request: Request,
+  { params }: { params: { code: string } },
+) {
+  const response = await fetch(
+    `https://www.patreon.com/api/oauth2/token?code=${params.code}&grant_type=authorization_code&client_id=${process.env.NEXT_PUBLIC_PATREON_CLIENT_ID}&client_secret=${process.env.PATREON_CLIENT_SECRET}&redirect_uri=${process.env.NEXT_PUBLIC_PATREON_REDIRECT_URI}`,
+    {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+    },
+  );
+  const json = await response.json();
+
+  return NextResponse.json(json);
+}