Files
cloud-cap-samples/media-store/app-src/src/api/axiosInstance.js

117 lines
3.4 KiB
JavaScript

import axios from 'axios';
import { getUserFromLS, getLocaleFromLS } from '../util/localStorageService';
import { emitter } from '../util/EventEmitter';
/**
* This is axios instance
*/
const axiosInstance = axios.create({
baseURL: process.env.SERVICE_URL,
timeout: 2000,
});
/**
* Changing user axios default params,
* which are used in api call functions (calls.js)
* @param {*} currentUser current user from react state and local storage
*/
function changeUserDefaults(currentUser) {
if (currentUser) {
axiosInstance.defaults.headers.common.Authorization = `Basic ${currentUser.accessToken}`;
axiosInstance.defaults.userID = currentUser.ID;
if (currentUser.roles.includes('customer')) {
axiosInstance.defaults.userEntity = `Customers/${currentUser.ID}`;
axiosInstance.defaults.tracksEntity = 'MarkedTracks';
} else {
axiosInstance.defaults.userEntity = `Employees/${currentUser.ID}`;
axiosInstance.defaults.tracksEntity = 'Tracks';
}
} else {
axiosInstance.defaults.tracksEntity = 'Tracks';
}
}
/**
* This func changing axios instance default params
* @param {*} locale current locale from react state and local storage
*/
function changeLocaleDefaults(locale) {
if (locale) {
axiosInstance.defaults.headers.common['Accept-language'] = locale;
}
}
/**
* Initializing initial data
*/
const user = getUserFromLS();
const locale = getLocaleFromLS();
changeUserDefaults(user);
changeLocaleDefaults(locale);
/**
* Error interceptor for refresh tokens mechanism
*/
let isRefreshing = false;
let subscribers = [];
const refreshTokens = (refreshToken) => {
return axiosInstance.post(
'users/refreshTokens',
{ refreshToken },
{
headers: { 'content-type': 'application/json' },
}
);
};
axiosInstance.interceptors.response.use(null, (error) => {
const originalRequest = error.config;
const user = getUserFromLS();
if (error.response && error.response.status === 401 && !!user) {
if (originalRequest.url === 'users/login') {
return Promise.reject(error);
}
// if users/refreshTokens request failed
if (isRefreshing && originalRequest.url === 'users/refreshTokens') {
subscribers.forEach((request) => request.reject(error));
subscribers = [];
isRefreshing = false;
return Promise.reject(error);
}
// if got a 401 error we sending users/refreshTokens request
if (!isRefreshing) {
isRefreshing = true;
refreshTokens(user.refreshToken)
.then((response) => {
emitter.emit('UPDATE_USER', response.data);
subscribers.forEach((request) => request.resolve(response.data.accessToken));
subscribers = [];
isRefreshing = false;
})
.catch(() => {
emitter.emit('UPDATE_USER', undefined);
});
}
// holding requests which should be sended after users/refreshTokens complete
// otherwise if users/refreshTokens failed an error will be thrown
return new Promise((resolve, reject) => {
subscribers.push({
resolve: (newAccessToken) => {
originalRequest.headers.Authorization = `Basic ${newAccessToken}`;
resolve(axiosInstance(originalRequest));
},
reject: (err) => {
reject(err);
},
});
});
}
return Promise.reject(error);
});
export { axiosInstance, changeLocaleDefaults, changeUserDefaults };