import { NextResponse, NextRequest } from 'next/server';
import { cookies } from 'next/headers'
import createIntlMiddleware from 'next-intl/middleware'
import { routing } from '@/i18n/routing'
import { decrypt } from '@/app/actions/session';

const intlMiddleware = createIntlMiddleware(routing);

export default async function proxy(request: NextRequest) {
	const path = request.nextUrl.pathname;

	if (
		path.startsWith('/_next') ||
		path.includes('/api/')
	) {
		return NextResponse.next();
	}

	const pathname = request.nextUrl.pathname;
	const locale = pathname.split('/')[1];
	const isValidLocale = routing.locales.includes(locale as any);

	if (!isValidLocale && !path.includes('/login')) {
		const defaultLocale = routing.defaultLocale;
		const newUrl = new URL(`/${defaultLocale}${path}`, request.url);
		return NextResponse.redirect(newUrl);
	}

	const isLoginPage = path.includes(`/${locale}/login`) || path === '/login';
	const isPublicPage = isLoginPage || path.includes('/api/');

	if (!isPublicPage) {
		const cookie = (await cookies()).get('session_nc_ap')?.value;
		const session = await decrypt(cookie);
		const targetLocale = isValidLocale ? locale : routing.defaultLocale;

		if (!session?.token) {
			const loginUrl = new URL(`/${targetLocale}/login`, request.url);
			return NextResponse.redirect(loginUrl);
		} else if (path === '/en' || path === '/ru') {
			const dashboardUrl = new URL(`/${targetLocale}/pages`, request.url);
			dashboardUrl.search = new URL(request.url).search;
			return NextResponse.redirect(dashboardUrl);
		}
	}

	const intlResponse = intlMiddleware(request);
	if (intlResponse) {
		const response = new NextResponse(intlResponse.body, intlResponse);
		response.headers.set('x-pathname', path);
		return response;
	}

	return NextResponse.next();
}

export const config = {
	matcher: ['/((?!_next/static|_next/image|.*\\.png$).*)']
};