V2 alpha - initial version (#172)

Initial alpha codebase for version 2 of WireGuard Portal.
This version is considered unstable and incomplete (for example, no public REST API)! 
Use with care!


Fixes/Implements the following issues:
 - OAuth support #154, #1 
 - New Web UI with internationalisation support #98, #107, #89, #62
 - Postgres Support #49 
 - Improved Email handling #47, #119 
 - DNS Search Domain support #46 
 - Bugfixes #94, #48 

---------

Co-authored-by: Fabian Wechselberger <wechselbergerf@hotmail.com>

frontend/src/helpers/fetch-wrapper.js

@@ -0,0 +1,95 @@
+import { authStore } from '@/stores/auth';
+import { securityStore } from '@/stores/security';
+
+export const fetchWrapper = {
+    url: apiUrl(),
+    get: request('GET'),
+    post: request('POST'),
+    put: request('PUT'),
+    delete: request('DELETE')
+};
+
+export const apiWrapper = {
+    url: apiUrl(),
+    get: apiRequest('GET'),
+    post: apiRequest('POST'),
+    put: apiRequest('PUT'),
+    delete: apiRequest('DELETE')
+};
+
+// request can be used to query arbitrary URLs
+function request(method) {
+    return (url, body = undefined) => {
+        const requestOptions = {
+            method,
+            headers: getHeaders(url)
+        };
+        if (body) {
+            requestOptions.headers['Content-Type'] = 'application/json';
+            requestOptions.body = JSON.stringify(body);
+        }
+        return fetch(url, requestOptions).then(handleResponse);
+    }
+}
+
+// apiRequest uses WGPORTAL_BACKEND_BASE_URL as base URL
+function apiRequest(method) {
+    return (path, body = undefined) => {
+        const url = WGPORTAL_BACKEND_BASE_URL + path
+        const requestOptions = {
+            method,
+            headers: getHeaders(method, url)
+        };
+        if (body) {
+            requestOptions.headers['Content-Type'] = 'application/json';
+            requestOptions.body = JSON.stringify(body);
+        }
+        return fetch(url, requestOptions).then(handleResponse);
+    }
+}
+
+// apiUrl uses WGPORTAL_BACKEND_BASE_URL as base URL
+function apiUrl() {
+    return (path) => {
+        return WGPORTAL_BACKEND_BASE_URL + path
+    }
+}
+
+// helper functions
+
+function getHeaders(method, url) {
+    // return auth header with jwt if user is logged in and request is to the api url
+    const auth = authStore();
+    const sec = securityStore();
+    const isApiUrl = url.startsWith(WGPORTAL_BACKEND_BASE_URL);
+
+    let headers = {};
+    if (isApiUrl && ['POST', 'PUT', 'PATCH', 'DELETE'].includes(method)) {
+        headers["X-CSRF-TOKEN"] = sec.CsrfToken;
+    }
+    if (isApiUrl && auth.IsAuthenticated) {
+        headers["X-FRONTEND-UID"] = auth.UserIdentifier;
+    }
+
+    return headers;
+}
+
+function handleResponse(response) {
+    return response.text().then(text => {
+        const data = text && JSON.parse(text);
+
+        if (!response.ok) {
+            const auth = authStore();
+            if ([401, 403].includes(response.status) && auth.IsAuthenticated) {
+                console.log("automatic logout initiated...");
+                // auto logout if 401 Unauthorized or 403 Forbidden response returned from api
+                auth.Logout();
+            }
+
+            const error = (data && data.Message) || response.statusText;
+            return Promise.reject(error);
+        }
+
+        return data;
+    });
+}