parsing headers

src/util/Util.js

@@ -16,23 +16,41 @@ export const setSession = (user) => {
     sessionStorage.setItem('user', JSON.stringify(user));
 };
 
-export const fetchUser = async () => {
+export const fetchUser = async (force = false) => {
+    const user = getUser();
+    if (!force && user) return user;
+
     const result = await fetch('/api/user');
     if (result.status === 200) {
         const data = await result.json();
         setSession(data);
         return data;
     }
+    return null;
 };
 
-export const post = (url, body) => {
+const parseResponse = async (response) => {
-    return fetch(url, {
+    const { headers: rawHeaders, status } = response;
+    const headers = [...rawHeaders].reduce((acc, [key, val]) => {
+        acc[key.toLowerCase()] = val;
+        return acc;
+    }, {});
+    const success = status >= 200 && status < 400;
+    const base = { success, status };
+    if (headers['content-type']?.includes('application/json')) {
+        const data = await response.json();
+        return {...base, ...data};
+    }
+    return { ...base, message: await response.text() };
+};
+
+export const post = async (url, body) => {
+    const response = await fetch(url, {
         method: 'post',
         headers: {
             'Content-Type': 'application/json'
         },
         body: JSON.stringify(body)
     });
-
+    return parseResponse(response);
-
 };