BookStack/resources/js/services/http.js

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/**
* @typedef FormattedResponse
* @property {Headers} headers
* @property {Response} original
* @property {Object|String} data
* @property {Boolean} redirected
* @property {Number} status
* @property {string} statusText
* @property {string} url
*/
/**
* Get the content from a fetch response.
* Checks the content-type header to determine the format.
* @param {Response} response
* @returns {Promise<Object|String>}
*/
async function getResponseContent(response) {
if (response.status === 204) {
return null;
}
const responseContentType = response.headers.get('Content-Type') || '';
const subType = responseContentType.split(';')[0].split('/').pop();
if (subType === 'javascript' || subType === 'json') {
return response.json();
}
return response.text();
}
export class HttpError extends Error {
constructor(response, content) {
super(response.statusText);
this.data = content;
this.headers = response.headers;
this.redirected = response.redirected;
this.status = response.status;
this.statusText = response.statusText;
this.url = response.url;
this.original = response;
}
}
/**
* @param {String} method
* @param {String} url
* @param {Object} events
* @return {XMLHttpRequest}
*/
export function createXMLHttpRequest(method, url, events = {}) {
const csrfToken = document.querySelector('meta[name=token]').getAttribute('content');
const req = new XMLHttpRequest();
for (const [eventName, callback] of Object.entries(events)) {
req.addEventListener(eventName, callback.bind(req));
}
req.open(method, url);
req.withCredentials = true;
req.setRequestHeader('X-CSRF-TOKEN', csrfToken);
return req;
}
/**
* Create a new HTTP request, setting the required CSRF information
* to communicate with the back-end. Parses & formats the response.
* @param {String} url
* @param {Object} options
* @returns {Promise<FormattedResponse>}
*/
async function request(url, options = {}) {
let requestUrl = url;
if (!requestUrl.startsWith('http')) {
requestUrl = window.baseUrl(requestUrl);
}
if (options.params) {
const urlObj = new URL(requestUrl);
for (const paramName of Object.keys(options.params)) {
const value = options.params[paramName];
if (typeof value !== 'undefined' && value !== null) {
urlObj.searchParams.set(paramName, value);
}
}
requestUrl = urlObj.toString();
}
const csrfToken = document.querySelector('meta[name=token]').getAttribute('content');
const requestOptions = {...options, credentials: 'same-origin'};
requestOptions.headers = {
...requestOptions.headers || {},
baseURL: window.baseUrl(''),
'X-CSRF-TOKEN': csrfToken,
};
const response = await fetch(requestUrl, requestOptions);
const content = await getResponseContent(response);
const returnData = {
data: content,
headers: response.headers,
redirected: response.redirected,
status: response.status,
statusText: response.statusText,
url: response.url,
original: response,
};
if (!response.ok) {
throw new HttpError(response, content);
}
return returnData;
}
/**
* Perform a HTTP request to the back-end that includes data in the body.
* Parses the body to JSON if an object, setting the correct headers.
* @param {String} method
* @param {String} url
* @param {Object} data
* @returns {Promise<FormattedResponse>}
*/
async function dataRequest(method, url, data = null) {
const options = {
method,
body: data,
};
// Send data as JSON if a plain object
if (typeof data === 'object' && !(data instanceof FormData)) {
options.headers = {
'Content-Type': 'application/json',
'X-Requested-With': 'XMLHttpRequest',
};
options.body = JSON.stringify(data);
}
// Ensure FormData instances are sent over POST
// Since Laravel does not read multipart/form-data from other types
// of request. Hence the addition of the magic _method value.
if (data instanceof FormData && method !== 'post') {
data.append('_method', method);
options.method = 'post';
}
return request(url, options);
}
/**
* Perform a HTTP GET request.
* Can easily pass query parameters as the second parameter.
* @param {String} url
* @param {Object} params
* @returns {Promise<FormattedResponse>}
*/
export async function get(url, params = {}) {
return request(url, {
method: 'GET',
params,
});
}
/**
* Perform a HTTP POST request.
* @param {String} url
* @param {Object} data
* @returns {Promise<FormattedResponse>}
*/
export async function post(url, data = null) {
return dataRequest('POST', url, data);
}
/**
* Perform a HTTP PUT request.
* @param {String} url
* @param {Object} data
* @returns {Promise<FormattedResponse>}
*/
export async function put(url, data = null) {
return dataRequest('PUT', url, data);
}
/**
* Perform a HTTP PATCH request.
* @param {String} url
* @param {Object} data
* @returns {Promise<FormattedResponse>}
*/
export async function patch(url, data = null) {
return dataRequest('PATCH', url, data);
}
/**
* Perform a HTTP DELETE request.
* @param {String} url
* @param {Object} data
* @returns {Promise<FormattedResponse>}
*/
async function performDelete(url, data = null) {
return dataRequest('DELETE', url, data);
}
export {performDelete as delete};