add method to store and retrieve additional parameters from token htt…

README.md

@@ -1,3 +1,5 @@
+# Archiving this repository: Original angular-oauth2-oidc now does codeflow. Will request to add contextual parameters.
+
 # angular-oauth2-oidc-codeflow
 [![Build Status](https://travis-ci.org/bechhansen/angular-oauth2-oidc.svg?branch=master)](https://travis-ci.org/bechhansen/angular-oauth2-oidc)
 

projects/lib/src/oauth-service.ts

@@ -668,6 +668,8 @@ export class OAuthService extends AuthConfig {
                             tokenResponse.scope
                         );
 
+                        this.storeAdditionalParameters(tokenResponse);
+
                         this.eventsSubject.next(new OAuthSuccessEvent('token_received'));
                         resolve(tokenResponse);
                     },
@@ -737,6 +739,8 @@ export class OAuthService extends AuthConfig {
             this.debug('refresh tokenResponse', tokenResponse);
             this.storeAccessTokenResponse(tokenResponse.access_token, tokenResponse.refresh_token, tokenResponse.expires_in, tokenResponse.scope);
 
+            this.storeAdditionalParameters(tokenResponse);
+
             if (this.oidc && tokenResponse.id_token) {
               this.processIdToken(tokenResponse.id_token, tokenResponse.access_token).
                 then(result => {
@@ -1302,6 +1306,23 @@ export class OAuthService extends AuthConfig {
         }
     }
 
+    /**
+     * Store additional parameters received in the tokenResponse
+     * @param tokenResponse the parameters from the token post request
+     */
+    private storeAdditionalParameters(tokenResponse) {
+      const additionalParams = JSON.parse(this._storage.getItem('additional_params')) || {};
+
+      const tokenKeys = ['access_token', 'refresh_token', 'expires_in', 'scope'];
+      Object.keys(tokenResponse).forEach(key => {
+        if (!tokenKeys.includes(key)) { // don't store parameters related to token, stored elsewhere
+          additionalParams[key] = tokenResponse[key];
+        }
+      });
+
+      this._storage.setItem('additional_params', JSON.stringify(additionalParams));
+    }
+
     /**
      * Checks whether there are tokens in the hash fragment
      * as a result of the implicit flow. These tokens are
@@ -1737,6 +1758,17 @@ export class OAuthService extends AuthConfig {
         return parseInt(this._storage.getItem('id_token_expires_at'), 10);
     }
 
+    /**
+     * Get additional parameters that have been saved after a log in
+     * @returns {object} key:value pairs of additional parameters from oAuth login
+     */
+    public getAdditionalParameters(): object {
+      if (!this._storage.getItem('additional_params')) {
+        return null;
+      }
+      return JSON.parse(this._storage.getItem('additional_params'));
+    }
+
     /**
      * Checkes, whether there is a valid access_token.
      */