88 lines
2.5 KiB
JavaScript
88 lines
2.5 KiB
JavaScript
// SPDX-FileCopyrightText: 2022 Gregor Kleen <gregor.kleen@ifi.lmu.de>,Sarah Vaupel <sarah.vaupel@ifi.lmu.de>,Sarah Vaupel <vaupel.sarah@campus.lmu.de>
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//
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// SPDX-License-Identifier: AGPL-3.0-or-later
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import Cookies from 'js-cookie';
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export class HttpClient {
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static ACCEPT = {
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TEXT_HTML: 'text/html',
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JSON: 'application/json',
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};
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_responseInterceptors = [];
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addResponseInterceptor(interceptor) {
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if (typeof interceptor === 'function') {
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this._responseInterceptors.push(interceptor);
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}
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}
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removeResponseInterceptor(interceptor) {
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//performs a reference check. if the interceptor is bound, when adding it, the reference of the bound function needs to be the same when removing it later.
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if (typeof interceptor !== 'function') {
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throw new Error(`Cannot remove Interceptor ${interceptor}, because it is not of type function`);
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}
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if(this._responseInterceptors.filter(el => el == interceptor).length === 0) {
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throw new Error(`Could not find Response Interceptor ${interceptor}.`);
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}
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this._responseInterceptors = this._responseInterceptors.filter(el => el !== interceptor);
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}
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_baseUrl;
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setBaseUrl(baseUrl) {
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if (typeof this._baseUrl !== 'undefined') {
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throw new Error('HttpClient baseUrl is already set');
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}
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this._baseUrl = baseUrl;
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}
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_defaultUrl;
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setDefaultUrl(defaultUrl) {
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if (typeof this._defaultUrl !== 'undefined') {
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throw new Error('HttpClient defaultUrl is already set');
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}
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this._defaultUrl = defaultUrl;
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}
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get(args) {
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args.method = 'GET';
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return this._fetch(args);
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}
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post(args) {
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args.method = 'POST';
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args.headers = args.headers || {};
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args.headers['X-XSRF-TOKEN'] = Cookies.get('XSRF-TOKEN');
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return this._fetch(args);
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}
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_fetch(options) {
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options.url = (options.url && options.url.href) || options.url || this._defaultUrl;
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if (this._baseUrl && options.url && options.url.substring(0,1) === '/' && options.url.substring(0,2) !== '//')
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options.url = this._baseUrl + (this._baseUrl.substring(this._baseUrl.substring.length - 1) === '/' ? '' : '/') + options.url.substring(1,0);
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const requestOptions = {
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credentials: 'same-origin',
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...options,
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};
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return fetch(options.url || window.location.href, requestOptions)
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.then(
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(response) => {
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this._responseInterceptors.forEach((interceptor) => interceptor(response, options));
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return Promise.resolve(response);
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},
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Promise.reject,
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).catch(console.error);
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}
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}
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