Finish v1 Azure Key Vault integration

backend/src/integrations/refresh.ts

@@ -1,13 +1,26 @@
 import axios from 'axios';
 import * as Sentry from '@sentry/node';
-import { INTEGRATION_HEROKU } from '../variables';
+import { INTEGRATION_AZURE_KEY_VAULT, INTEGRATION_HEROKU } from '../variables';
 import {
-    CLIENT_SECRET_HEROKU
+  SITE_URL,
+  CLIENT_ID_AZURE,
+  CLIENT_SECRET_AZURE,
+  CLIENT_SECRET_HEROKU
 } from '../config';
 import {
-    INTEGRATION_HEROKU_TOKEN_URL
+  INTEGRATION_AZURE_TOKEN_URL,
+  INTEGRATION_HEROKU_TOKEN_URL
 } from '../variables';
 
+interface RefreshTokenAzureResponse {
+  token_type: string;
+  scope: string;
+  expires_in: number;
+  ext_expires_in: 4871;
+  access_token: string;
+  refresh_token: string;
+}
+
 /**
  * Return new access token by exchanging refresh token [refreshToken] for integration
  * named [integration]
@@ -25,6 +38,11 @@ const exchangeRefresh = async ({
   let accessToken;
   try {
     switch (integration) {
+      case INTEGRATION_AZURE_KEY_VAULT:
+        accessToken = await exchangeRefreshAzure({
+          refreshToken
+        });
+        break;
       case INTEGRATION_HEROKU:
         accessToken = await exchangeRefreshHeroku({
           refreshToken
@@ -40,6 +58,38 @@ const exchangeRefresh = async ({
   return accessToken;
 };
 
+/**
+ * Return new access token by exchanging refresh token [refreshToken] for the
+ * Azure integration
+ * @param {Object} obj
+ * @param {String} obj.refreshToken - refresh token to use to get new access token for Azure
+ * @returns
+ */
+const exchangeRefreshAzure = async ({
+  refreshToken
+}: {
+  refreshToken: string;
+}) => {
+  try {
+    const res: RefreshTokenAzureResponse = (await axios.post(
+      INTEGRATION_AZURE_TOKEN_URL,
+       new URLSearchParams({
+        client_id: CLIENT_ID_AZURE,
+        scope: 'openid offline_access',
+        refresh_token: refreshToken,
+        grant_type: 'refresh_token',
+        client_secret: CLIENT_SECRET_AZURE
+      } as any)
+    )).data;
+    
+    return res.access_token;
+  } catch (err) {
+    Sentry.setUser(null);
+    Sentry.captureException(err);
+    throw new Error('Failed to get refresh OAuth2 access token for Azure'); 
+  }
+}
+
 /**
  * Return new access token by exchanging refresh token [refreshToken] for the
  * Heroku integration
@@ -52,23 +102,23 @@ const exchangeRefreshHeroku = async ({
 }: {
   refreshToken: string;
 }) => {
-    let accessToken;
-	//TODO: Refactor code to take advantage of using RequestError. It's possible to create new types of errors for more detailed errors
-    try {
-        const res = await axios.post(
-            INTEGRATION_HEROKU_TOKEN_URL,
-            new URLSearchParams({
-                grant_type: 'refresh_token',
-                refresh_token: refreshToken,
-                client_secret: CLIENT_SECRET_HEROKU
-            } as any)
-        );
+  
+  let accessToken;
+  try {
+    const res = await axios.post(
+        INTEGRATION_HEROKU_TOKEN_URL,
+        new URLSearchParams({
+            grant_type: 'refresh_token',
+            refresh_token: refreshToken,
+            client_secret: CLIENT_SECRET_HEROKU
+        } as any)
+    );
 
     accessToken = res.data.access_token;
   } catch (err) {
     Sentry.setUser(null);
     Sentry.captureException(err);
-    throw new Error('Failed to get new OAuth2 access token for Heroku');
+    throw new Error('Failed to refresh OAuth2 access token for Heroku');
   }
 
   return accessToken;