Revert "try to use lightweight unfetch instead of heavy axious"

This reverts commit b020ef2

web/app/common/fetcher.js

@@ -1,8 +1,7 @@
 import 'common/promises';
 
 // TODO: i think we need to use unfetch here instead of heavy axios
-// import axios from 'axios';
-import fetch from 'unfetch';
+import axios from 'axios';
 
 import { BASE_URL, API_BASE } from './constants';
 import { siteId } from './settings';
@@ -10,16 +9,16 @@ import { siteId } from './settings';
 const fetcher = {};
 const methods = ['get', 'post', 'put', 'patch', 'delete', 'head'];
 
-// const { CancelToken } = axios;
-// let cancelHandler = [];
+const { CancelToken } = axios;
+let cancelHandler = [];
 
-// fetcher.cancel = (mask) => {
-//   cancelHandler.forEach(req => {
-//     if (req.url.includes(mask)) {
-//       req.executor('Operation canceled by the user.');
-//     }
-//   });
-// };
+fetcher.cancel = (mask) => {
+  cancelHandler.forEach(req => {
+    if (req.url.includes(mask)) {
+      req.executor('Operation canceled by the user.');
+    }
+  });
+};
 
 methods.forEach(method => {
   fetcher[method] = data => {
@@ -32,26 +31,40 @@ methods.forEach(method => {
     const basename = `${BASE_URL}${overriddenApiBase}`;
 
     return new Promise((resolve, reject) => {
+      const headers = {
+        Accept: 'application/json',
+        'Content-Type': 'application/json',
+      };
+
       const parameters = {
-        method: method.toUpperCase(),
-        headers: {
-          Accept: 'application/json',
-          'Content-Type': 'application/json',
-        },
-        credentials: withCredentials && 'include',
+        method,
+        headers,
+        withCredentials,
       };
 
       if (Object.keys(body).length) {
         parameters.data = body;
       }
 
-      let requestUrl = `${basename}${url}`;
-      if (method !== 'post') requestUrl += (requestUrl.includes('?') ? '&' : '?') + `site=${siteId}`; // TODO: rewrite it
+      parameters.url = `${basename}${url}`;
+      if (method !== 'post') parameters.url += (parameters.url.includes('?') ? '&' : '?') + `site=${siteId}`;
+      parameters.cancelToken = new CancelToken(executor => {
+        cancelHandler.push({
+          executor,
+          url: parameters.url,
+        });
+      });
 
-      fetch(requestUrl, parameters)
-        .then(res => res.json())
-        .then(data => resolve(data))
-        .catch(error => reject(error));
+      axios(parameters)
+        .then(res => resolve(res.data))
+        .catch(error => {
+          if (!axios.isCancel(error)) {
+            reject(error);
+          }
+        })
+        .finally(() => {
+          cancelHandler = cancelHandler.filter(req => req.url !== parameters.url);
+        });
     });
   }
 });