docs: update default authn method document (#8684)

Documents in the `configuration guide` section should follow the same logical grouping as in the TUI

Signed-off-by: ossdhaval <343411+ossdhaval@users.noreply.github.com>

docs/admin/config-guide/default-authentication-method-config.md

@@ -2,77 +2,144 @@
 tags:
   - administration
   - configuration
-  - authentication
+  - default authentication
 ---
 
 # Default Authentication Method
 
-> Prerequisite: Know how to use the Janssen CLI in [command-line mode](config-tools/jans-cli/README.md)
+The Janssen Server allows administrators to set and manage the default
+authentication method for the authentication server.
+The Janssen Server provides multiple configuration tools to perform these tasks.
 
-Let's get the information of **Default Authentication Method**:
+=== "Use Command-line"
 
-```
+    Use the command line to perform actions from the terminal. Learn how to
+    use Jans CLI [here](./config-tools/jans-cli/README.md) or jump straight to
+    the [Using Command Line](#using-command-line)
+
+=== "Use Text-based UI"
+
+    Use a fully functional text-based user interface from the terminal.
+    Learn how to use Jans Text-based UI (TUI)
+    [here](./config-tools/jans-tui/README.md) or jump straight to the
+    [Using Text-based UI](#using-text-based-ui)
+
+=== "Use REST API"
+
+    Use REST API for programmatic access or invoke via tools like CURL or 
+    Postman. Learn how to use Janssen Server Config API 
+    [here](./config-tools/config-api/README.md) or Jump straight to the
+    [Using Configuration REST API](#using-configuration-rest-api)
+
+##  Using Command Line
+
+Operations to manage the default authentication method are grouped under the
+`DefaultAuthenticationMethod` task. To get information about those operations
+use the command below.
+
+```bash title="Command"
 /opt/jans/jans-cli/config-cli.py --info DefaultAuthenticationMethod
 ```
-```
+```text title="Output"
 Operation ID: get-acrs
   Description: Gets default authentication method.
 Operation ID: put-acrs
   Description: Updates default authentication method.
-  Schema: /components/schemas/AuthenticationMethod
+  Schema: AuthenticationMethod
 
-To get sample shema type /opt/jans/jans-cli/config-cli.py --schema <schma>, for example /opt/jans/jans-cli/config-cli.py --schema /components/schemas/AuthenticationMethod
+To get sample schema type /opt/jans/jans-cli/config-cli.py --schema <schma>, for example /opt/jans/jans-cli/config-cli.py --schema /components/schemas/AuthenticationMethod
 ```
 
-Table of Contents
-=================
+### Find Current Authentication Method
 
-* [Default AUthentication Method](#default-authentication-method)
-  * [Find Current Authentication Method](#find-current-authentication-method)
-  * [Update Default Authentication Method](#update-default-authentication-method)
-
-## Find Current Authentication Method
-
-To get the default authentication method:
-```
+To get the current default authentication method use the command below.
+```bash title="Command"
 /opt/jans/jans-cli/config-cli.py --operation-id get-acrs
 ```
-```
-Getting access token for scope https://jans.io/oauth/config/acrs.readonly
+```json title="Sample Output"
 {
   "defaultAcr": "simple_password_auth"
 }
 ```
 
-## Update Default Authentication Method
+### Update Default Authentication Method
 
-Let's update the _Default Authentication Method_ using janssen CLI command line. To perform the _put-acrs_ operation, we have to use its schema.
+Let's update the _Default Authentication Method_ using the janssen CLI command line.
+To perform the _put-acrs_ operation, we have to use its schema.
 To get its schema:
 
+```bash title="Command"
+/opt/jans/jans-cli/config-cli.py --schema AuthenticationMethod \
+> /tmp/patch-default-auth.json
 ```
-/opt/jans/jans-cli/config-cli.py --schema AuthenticationMethod > /tmp/patch-default-auth.json
-```
+```json title="Sample Output"
+{
+  "defaultAcr": "string"
+}
+
 ```
+
+This command will create a `.json` file with a schema.
+It comes with a `string` value. We need to modify this file.
+We have seen that our default authentication method is `simple_password_auth`.
+We are going to update it with `passport_saml` authentication method.
+
+```json title="Sample Output"
 {
-  "defaultAcr": null
+  "defaultAcr": "passport_saml"
 }
+
 ```
 
-It will create a `.json` file with a schema. It comes with a `null` value. We need to modify this file to update default acr.
-we have seen that our Default Authentication Method is `simple_password_auth`. We are going to update it with `passport_saml` authenitcation method.
+Now let's trigger the operation using the above file.
 
+```bash title="Command"
+/opt/jans/jans-cli/config-cli.py --operation-id put-acrs \
+--data /tmp/patch-default-auth.json
 ```
-nano /tmp/patch-default-auth.json
+
+It will show the updated result.
+
+```json title="Sample Output"
+Server Response:
+{
+  "defaultAcr": "passport_saml"
+}
+
 ```
 
-![update default authentication method](../../assets/image-cl-update-default-auth-03042021.png)
+##  Using Text-based UI
+
+In Janssen, You can manage default authentication method using
+the [Text-Based UI](./config-tools/jans-tui/README.md) also.
+
+You can start TUI using the command below:
 
-Now let's do the operation:
-```commandline
-/opt/jans/jans-cli/config-cli.py --operation-id put-acrs --data /tmp/patch-default-auth.json
+```bash title="Command"
+sudo /opt/jans/jans-cli/jans_cli_tui.py
 ```
 
-It will show the updated result.
+### Find Current Authentication Method
+
+Navigate to `Auth Server` -> `Authn` to open the `Authn` screen as shown
+in the image below. This screen lists the available authentication methods
+where the default method is marked with `x` under the `Default` column.
+
+![image](../../assets/tui-curr-authn-method.png)
+
+
+### Update Default Authentication Method
+
+![image](../../assets/tui-authn-method-detail.png)
+
+Bring the tab focus to the authentication method that should be the new default
+method. Hit `Enter` to open the dialog as shown above. Using the checkbox for
+`Default Authen Method` the current method can be made the default 
+authentication method.
+
 
-![updated result](../../assets/image-cl-update-default-auth-result-03042021.png)
+## Using Configuration REST API
 
+Janssen Server Configuration REST API exposes relevant endpoints for managing
+and configuring the Default Authentication Method. Endpoint details are published
+in the [Swagger document](./../reference/openapi.md).