@inertiapixel/nextjs-auth/dist/server/handlers.js

A reusable Next.js authentication package supporting credentials, OTP, and OAuth login.

import { NextResponse } from 'next/server';
import { SOCIAL_PROVIDERS } from '../types';
import { getApiBaseUrl } from '../utils/getApiBaseUrl';
export async function handlers(req) {
    const segments = req.nextUrl.pathname.split('/');
    const provider = segments[segments.length - 1];
    if (!SOCIAL_PROVIDERS.includes(provider)) {
        return new NextResponse('Invalid OAuth provider', { status: 400 });
    }
    const code = req.nextUrl.searchParams.get('code');
    const apiBaseUrl = getApiBaseUrl(req);
    if (!code || !apiBaseUrl) {
        return new NextResponse(`<script>
        window.opener?.postMessage({ 
          error: ${!code ? "'Missing code'" : "'Missing apiBaseUrl'"} 
        }, window.origin);
        window.close();
      </script>`, { status: 400, headers: { 'Content-Type': 'text/html' } });
    }
    try {
        const res = await fetch(`${apiBaseUrl}/social/${provider}`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ code }),
        });
        const data = await res.json();
        return new NextResponse(`<script>
        window.opener?.postMessage(${JSON.stringify(data)}, window.origin);
        window.close();
      </script>`, { headers: { 'Content-Type': 'text/html' } });
    }
    catch (err) {
        console.error(`[OAuth Callback Error] ${provider}:`, err);
        return new NextResponse(`<script>
        window.opener?.postMessage({ error: 'OAuth callback failed' }, window.origin);
        window.close();
      </script>`, { status: 500, headers: { 'Content-Type': 'text/html' } });
    }
}