MyCrypto/common/api/utils.js

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2017-04-12 05:04:27 +00:00
// Request utils,
// feel free to replace with your code
// (get, post are used in ApiServices)
import {getLocalToken} from 'api/AuthSvc';
import config from 'config'
window.BASE_API = config.BASE_API
function requestWrapper(method) {
return async function (url, data = null, params = {}) {
if (method === 'GET') {
// is it a GET?
// GET doesn't have data
params = data;
data = null;
} else if (data === Object(data)) {
// (data === Object(data)) === _.isObject(data)
data = JSON.stringify(data)
} else {
throw new Error(`XHR invalid, check ${method} on ${url}`)
}
// default params for fetch = method + (Content-Type)
let defaults = {
method: method,
headers: {
'Content-Type': 'application/json; charset=UTF-8'
}
}
// check that req url is relative and request was sent to our domain
if (url.match(/^https?:\/\//gi) > -1) {
let token = getLocalToken();
if (token) {
defaults.headers['Authorization'] = `JWT ${token}`;
}
url = window.BASE_API + url;
}
if (data) {
defaults.body = data;
}
let paramsObj = {...defaults, headers: {...params, ...defaults.headers}}
return await fetch(url, paramsObj)
.then(parseJSON)
.catch((err) => {
console.error(err)
});
}
}
// middlewares
// parse fetch json, add ok property and return request result
/**
* 1. parse response
* 2. add "ok" property to result
* 3. return request result
* @param {Object} res - response from server
* @return {Object} response result with "ok" property
*/
async function parseJSON(res) {
let json;
try {
json = await res.json()
} catch (e) {
return {data: {}, ok: false}
}
// simplest validation ever, ahah :)
if (!res.ok) {
return {data: json, ok: false}
}
// resultOK - is a function with side effects
// It removes ok property from result object
return {data: json, ok: true}
}
export const get = requestWrapper('GET')
export const post = requestWrapper('POST')
export const put = requestWrapper('PUT')
export const patch = requestWrapper('PATCH')
export const del = requestWrapper('DELETE')
// USAGE:
// get('https://www.google.com', {
// Authorization: 'JWT LOL',
// headers: {
// 'Content-Type': 'text/html'
// }
// })
// FUNCTION WITH SIDE-EFFECTS
/**
* `parseJSON()` adds property "ok"
* that identicates that response is OK
*
* `resultOK`removes result.ok from result and returns "ok" property
* It widely used in `/actions/*`
* for choosing action to dispatch after request to API
*
* @param {Object} result - response result that
* @return {bool} - indicates was request successful or not
*/
export function resultOK(result) {
if (result) {
let ok = result.ok
delete result.ok
return ok //look at parseJSON
} else {
return false
}
}