Add changePassword method in controller and authenticated user accessor

<UserStory> AUTH004 : Change Password </UserStory>

    <Changes>
    - Added changePassword method in ZenvyController to move to AuthenticationManagementService
    - Declared changePassword in ZenvyController.h
    - Introduced getAuthenticatedUser() in DataStore for accessing authenticated employee
    - Updated DataStore.h with getAuthenticatedUser() method
    - Prepared AuthenticationManagementService.cpp for password change implementation
    </Changes>

    <Review>
    Smitha Mohan
    </Review>

Trenser.Zenvy/Trenser.Zenvy/controllers/ZenvyController.cpp

@@ -10,6 +10,7 @@ void ZenvyController::logout()
 {
 }
 
-void AuthenticationManagementService::changePassword()
+void ZenvyController::changePassword(const std::string& password) const
 {
+	m_authenticationManagementService->changePassword(password);
 }

Trenser.Zenvy/Trenser.Zenvy/controllers/ZenvyController.h

@@ -44,5 +44,7 @@ public:
 		//Authentication
 		AuthenticationContext login(const std::string& email, const std::string& password);
 		void logout();
+		void changePassword(const std::string&) const;
 };
 
+

Trenser.Zenvy/Trenser.Zenvy/datastores/DataStore.cpp

@@ -11,6 +11,11 @@ logMap& DataStore::getLogs()
 	return m_logs;
 }
 
+std::shared_ptr<Employee>& DataStore::getAuthenticatedEmployee()
+{
+	return m_authenticatedEmployee;
+}
+
 void DataStore::setAuthenticatedEmployee(std::shared_ptr<Employee> authenticatedEmployee)
 {
 	m_authenticatedEmployee = authenticatedEmployee;

Trenser.Zenvy/Trenser.Zenvy/datastores/DataStore.h

@@ -37,5 +37,6 @@ public:
     DataStore& operator=(DataStore&&) = delete;
 	employeeMap& getEmployees();
     logMap& getLogs();
+    std::shared_ptr<Employee>& getAuthenticatedEmployee();
     void setAuthenticatedEmployee(std::shared_ptr < Employee>);
 };

Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.cpp

@@ -46,3 +46,16 @@ std::tuple<Enums::LoginStatus, Enums::EmployeeType, Enums::EmployeeDesignation>
 	}
 	return std::make_tuple(loginStatus, employeeType, employeeDesignation);
 }
+
+void AuthenticationManagementService::changePassword(const std::string& password)
+{
+	std::shared_ptr<Employee> authenticatedUser = m_dataStore.getAuthenticatedUser();
+	if (authenticatedUser)
+	{
+		authenticatedUser->setEmployeePassword(password);
+	}
+	else
+	{
+		throw std::runtime_error("User not found");
+	}
+}

Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.h

@@ -2,6 +2,7 @@
 #include <string>
 #include <map>
 #include <utility>
+#include <stdexcept>
 #include "DataStore.h"
 #include "Enums.h"
 
@@ -13,6 +14,6 @@ public:
 	AuthenticationManagementService() : m_dataStore(DataStore::getInstance()) {};
 	std::tuple<Enums::LoginStatus, Enums::EmployeeType, Enums::EmployeeDesignation> login(const std::string& username, const std::string& password);
 	void logout();
-	void changePassword();
+	void changePassword(std::string);
 };