Create login page and add wiki/contact item

Create the login page for Clamp Ui; Add wiki/contact page which chould
be selected from the menu bar.

Issue-ID: CLAMP-416, CLAMP-417
Change-Id: Idddafd9c59a1e4d2897e962c831060e55083025c
Signed-off-by: xuegao <xg353y@intl.att.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/ui-react/src/components/backend_communication/LoopService.js b/ui-react/src/components/backend_communication/LoopService.js
new file mode 100644
index 000000000..982180df5
--- /dev/null
+++ b/ui-react/src/components/backend_communication/LoopService.js
@@ -0,0 +1,66 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights
+ *                             reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END============================================
+ * ===================================================================
+ *
+ */
+
+const LoopService = {
+    login
+};
+
+function login(username, password) {
+    let options = {
+           method: 'GET'
+         };
+    if (username && password) {
+      options = {
+             method: 'GET',
+             credentials: 'include',
+             headers: {
+                'Authorization': "Basic " + new Buffer(username + ":" + password).toString("base64")
+             }
+           };
+    }
+
+    return fetch(`/restservices/clds/v1/user/getUser`, options)
+      .then(response => handleResponse(response))
+      .then(function(data) {
+          localStorage.setItem('user', data);
+          console.log(data);
+});
+}
+
+function handleResponse(response) {
+     if (!response.ok || response.redirected === true) {
+          if (response.status === 401 || response.status === 500 || response.redirected === true) {
+              if (localStorage.getItem('tryBasicAuth')) {
+                // login failed, go to invalud login page
+                localStorage.removeItem('user');
+              } else {
+                // try to login with username and password
+                localStorage.setItem('tryBasicAuth', true);
+              }
+          }
+          const error = response.statusText;
+          return Promise.reject(error);
+      }
+    return response.text();
+}
+export default LoopService;