tried a bunch of combinations, no luck

src/services/authentication-service-v2.js

@@ -62,10 +62,10 @@ class AuthenticationService {
    */
   checkForSessionStateAndAuthCode() {
     const path = window.location.href;
-    const sessionStateMatch = /&session_state=([^&]*)/.exec(path);
-    const authCodeMatch = /&code=([^&]*)/.exec(path);
+    const sessionStateMatch = /session_state=([^&]*)/.exec(path);
+    const authCodeMatch = /code=([^&]*)/.exec(path);
 
-    if (!sessionStateMatch || !authCodeMatch[1]) {
+    if (!sessionStateMatch || !authCodeMatch) {
       return;
     }
 
@@ -73,58 +73,65 @@ class AuthenticationService {
 
     let sessionState = sessionStateMatch[1];
     let authCode = authCodeMatch[1];
-    console.info({sessionState: sessionState, authCode: authCode});
+    console.info('authCode = ' + authCode);
 
     this.getAccessToken(authCode);
-
-    /*localStorage.setItem(
-      this.STORAGE_KEY,
-      //eslint-disable-next-line camelcase
-      JSON.stringify([{ access_token: accessToken }])
-    );*/
-    //const pathMinusAccessToken = path.substr(0, path.indexOf('?'));
-    //window.location.href = pathMinusAccessToken;
   }
 
-  async getAccessToken(authenticationCode) {
-    console.info(authenticationCode);
-    /*let urlRequestAccessToken = 'https://iam.ebrains.eu/auth/realms/hbp/protocol/openid-connect/token?'
-      + 'grant_type=authorization_code'
-      + '&client_id=' + this.CLIENT_ID
-      + '&redirect_uri=' + window.location.origin
-      + '&code=' + authenticationCode
-      + '&client_secret=' + this.CLIENT_SECRET;*/
+  async getAccessToken(authorizationCode) {
+    console.info('getAccessToken - origin = ' + window.location.origin);
+    console.info('getAccessToken - authenticationCode = ' + authorizationCode);
     let urlRequestAccessToken = 'https://iam.ebrains.eu/auth/realms/hbp/protocol/openid-connect/token';
 
     let options = {
       method: 'POST',
       mode: 'cors', // no-cors, *cors, same-origin
-      cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
-      credentials: 'same-origin', // include, *same-origin, omit
+      //cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
+      //credentials: 'same-origin', // include, *same-origin, omit
       headers: {
-        'Content-Type': 'application/x-www-form-urlencoded',
+        'Content-Type': 'application/x-www-form-urlencoded'//,
         //'Access-Control-Allow-Origin': '*',
-        Referer: window.location.origin
+        //Referer: window.location.origin
       },
       // redirect: manual, *follow, error
-      redirect: 'follow',
+      //redirect: 'follow',
       // referrerPolicy: no-referrer, *no-referrer-when-downgrade, origin, origin-when-cross-origin, same-origin,
       // strict-origin, strict-origin-when-cross-origin, unsafe-url
       referrerPolicy: 'no-referrer'
     };
 
-    options.body = JSON.stringify({
+    /*options.body = JSON.stringify({
       grant_type: 'authorization_code',
       client_id: this.CLIENT_ID,
       redirect_uri: window.location.origin,
       client_secret: this.CLIENT_SECRET,
-      code: authenticationCode
-    });
+      code: authorizationCode
+    });*/
+    let formDetails = {
+      grant_type: 'authorization_code',
+      client_id: this.CLIENT_ID,
+      redirect_uri: window.location.origin,
+      client_secret: this.CLIENT_SECRET,
+      code: authorizationCode
+    };
+    const formBody = Object.entries(formDetails)
+      .map(([key, value]) => encodeURIComponent(key) + '=' + encodeURIComponent(value))
+      .join('&');
+    options.body = formBody;
 
     const responseAccessTokenRequest = await fetch(urlRequestAccessToken, options);
     console.info(responseAccessTokenRequest);
+    console.info(await responseAccessTokenRequest.json());
     /*const responseJSON = await responseAccessTokenRequest.json();
     console.info(responseJSON);*/
+
+    /*localStorage.setItem(
+      this.STORAGE_KEY,
+      //eslint-disable-next-line camelcase
+      JSON.stringify([{ access_token: accessToken }])
+    );*/
+    //const pathMinusAccessToken = path.substr(0, path.indexOf('?'));
+    //window.location.href = pathMinusAccessToken;
   }
 
   /**
@@ -166,6 +173,7 @@ class AuthenticationService {
     if (!this.redirectToAuthPage) {
       return;
     }
+    console.info('openAuthenticationPage - origin=' + window.location.origin);
 
     this.clearStoredToken();
 
@@ -178,7 +186,8 @@ class AuthenticationService {
       &redirect_uri=${encodeURIComponent(window.location.href)}`;*/
 
     let testClientID = 'community-apps-tutorial';
-    let testRedirectURI = window.location.href; //'http://localhost:3000';
+    console.info('redirect_uri=' + window.location.origin);
+    let testRedirectURI = window.location.origin; //'http://localhost:3000';
     window.location.href = url +
       '&client_id=' + testClientID +
       '&redirect_uri=' + testRedirectURI;