import axios, { AxiosError, AxiosResponse } from 'axios';
import { ReloadHandler } from './reload-handler';
import { isRelativeUrl } from './utils';

export interface UnauthorizedHandler {
    isUnauthorized?(response: AxiosResponse, defaultHandler: () => boolean): boolean;
    unauthorizedHandler?(): void;
}

export function initAjaxHandlersUnauthorized(options: UnauthorizedHandler = {}) {
    const reloadHandler = new ReloadHandler({ id: 'ajax-handlers-unauthorized' });

    const defaultUnauthorizedHandler = {
        isUnauthorized(response: AxiosResponse) {
            return isRelativeUrl(response.config) && response.status === 401;
        },
        unauthorizedHandler() {
            reloadHandler.reload();
        },
    };

    const { isUnauthorized, unauthorizedHandler } = { ...defaultUnauthorizedHandler, ...options };

    axios.interceptors.response.use(undefined, (error: AxiosError) => {
        if (
            error.response &&
            isUnauthorized(error.response, () =>
                defaultUnauthorizedHandler.isUnauthorized(error.response!)
            )
        ) {
            unauthorizedHandler();
        }
        return Promise.reject(error);
    });
}