import { createFileRoute } from '@tanstack/react-router';
import { zodValidator } from '@tanstack/zod-adapter';
import z from 'zod';
import { LoginForm } from '@/components/login-form';
import { generateOAuthState } from '@/lib/random';
import { getToken } from '@/lib/token';

const authorizeSchema = z.object({
  response_type: z.literal('code').default('code'),
  client_id: z.literal('org_client').default('org_client'),
  redirect_uri: z.string().default(`${new URL(import.meta.env.VITE_APP_BASE_URL as string).toString()}token`),
  state: z.string().default(generateOAuthState()),
});

export type AuthorizeSearchParams = z.infer<typeof authorizeSchema>;

export const Route = createFileRoute('/authorize')({
  component: RouteComponent,
  validateSearch: zodValidator(authorizeSchema),
});

function RouteComponent() {
  const token = getToken();
  const oauthParams = Route.useSearch();
  if (token !== null) {
    const base = new URL(window.location.origin);
    const url = new URL('/api/v1/auth/redirect', base);
    url.searchParams.set('client_id', oauthParams.client_id);
    url.searchParams.set('response_type', oauthParams.response_type);
    url.searchParams.set('redirect_uri', oauthParams.redirect_uri);
    url.searchParams.set('state', oauthParams.state);
    window.location.href = url.toString();
    return null;
  }
  return (
    <div className="bg-background flex min-h-svh flex-col items-center justify-center gap-6 p-6 md:p-10">
      <div className="w-full max-w-sm">
        <LoginForm oauthParams={oauthParams} />
      </div>
    </div>
  );
}