docfix/Add OAuth 2.0 Client Credentials Flow to a Glossary

obp-api/src/main/docs/glossary/OAuth_2.0_Client_Credentials_Flow_Manual.md

@@ -0,0 +1,65 @@
+# OAuth 2.0 Client Credentials Flow Manual
+
+## Overview
+OAuth 2.0 Client Credentials Flow is used when a client application (such as a backend service) needs to authenticate and request access to resources without user interaction. This flow is typically used for machine-to-machine (M2M) authentication.
+
+## Prerequisites
+Before making requests, ensure you have:
+- A valid **client_id** and **client_secret**.
+- The authorization server running on **localhost:7070**.
+- The required endpoint available: `/realms/master/protocol/openid-connect/token`.
+
+## 1. Requesting an Access Token
+To obtain an access token, send a **POST** request to the token endpoint with the following details.
+
+### **Request**
+```
+POST /realms/master/protocol/openid-connect/token HTTP/1.1
+Host: localhost:7070
+Content-Type: application/x-www-form-urlencoded
+Authorization: Basic Og==
+Content-Length: 104
+
+client_id=open-bank-project&client_secret=WWJ04UzMhWmLEqW2KIgBHwD4UNEotzXz&grant_type=client_credentials
+```
+
+### **Explanation of Parameters**
+| Parameter         | Description |
+|------------------|-------------|
+| `client_id`      | The unique identifier for your client application. |
+| `client_secret`  | The secret key assigned to your client. |
+| `grant_type`     | Must be set to `client_credentials` to indicate this authentication flow. |
+
+### **Example cURL Command**
+```sh
+curl -X POST "http://localhost:7070/realms/master/protocol/openid-connect/token" \
+     -H "Content-Type: application/x-www-form-urlencoded" \
+     -u "open-bank-project:WWJ04UzMhWmLEqW2KIgBHwD4UNEotzXz" \
+     -d "grant_type=client_credentials"
+```
+
+## 2. Expected Response
+A successful request will return a JSON response containing the access token:
+```json
+{
+    "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
+    "token_type": "Bearer",
+    "expires_in": 3600
+}
+```
+
+### **Response Fields**
+| Field           | Description |
+|----------------|-------------|
+| `access_token` | The token required to authenticate API requests. |
+| `token_type`   | Usually `Bearer`, meaning it should be included in the Authorization header. |
+| `expires_in`   | The token expiration time in seconds. |
+
+## 3. Using the Access Token
+Once you obtain the access token, include it in the `Authorization` header of your subsequent API requests:
+
+### **Example API Request with Token**
+```sh
+curl -X GET "http://localhost:7070/protected/resource" \
+     -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
+```

obp-api/src/main/scala/code/api/util/Glossary.scala

@@ -3514,10 +3514,8 @@ object Glossary extends MdcLoggable  {
 	}
 
 	private def getListOfFiles():List[File] = {
-		val d = new File("src/main/docs/glossary").exists() match {
-			case true => new File("src/main/docs/glossary")
-			case false => new File("obp-api/src/main/docs/glossary")
-		}
+    val currentDir = new File(".").getCanonicalPath
+		val d = new File(currentDir + "/obp-api/src/main/docs/glossary")
 		if (d.exists && d.isDirectory) {
 			d.listFiles.filter(_.isFile).filter(_.getName.endsWith(".md")).toList
 		} else {