import { oauthManager } from '#server/service/oauth/oauth-manager';
import { setSessionCookie } from '#server/service/auth/cookie';
import { OAuthError } from '#server/service/oauth/oauth-error';
import { FRONTEND_LOGIN_PATH } from "common/config"

export default defineWrappedResponseHandler(async (event) => {
  const providerName = getRouterParam(event, 'provider');
  const query = getQuery(event);

  const { code, state } = query as { code?: string; state?: string };

  if (!code || !state) {
    return sendRedirect(event, `${FRONTEND_LOGIN_PATH}?oauth_error=missing_params`);
  }

  try {
    const result = await oauthManager.handleCallback(providerName!, code, state);

    if (result.sessionId) {
      setSessionCookie(event, result.sessionId);
    }

    return sendRedirect(event, `${FRONTEND_LOGIN_PATH}??oauth_success=1`);
  } catch (error) {
    const errorCode = error instanceof OAuthError ? error.code : 'OAUTH_UNKNOWN';
    return sendRedirect(event, `${FRONTEND_LOGIN_PATH}??oauth_error=${errorCode}`);
  }
});