Implement View Payslip History

<UserStory> EMP011 : View Payslip History </UserStory>

<Changes>
 - Implemented Enums::Month enum and helper functions getMonth() and getMonthString() for month formatting.
 - Created viewPayslipHistory() helper in MenuHelper.h to display payslip history in aligned tabular format.
 - Integrated viewPayslipHistory() option into EmployeeMenu, FinanceExecutiveMenu, HRManagerMenu, ITExecutiveMenu, TalentExecutiveMenu, TeamExecutiveMenu, and TeamLeadMenu.
</Changes>

<Review>
  Smitha Mohan
</Review>

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

@@ -53,6 +53,11 @@ void ZenvyController::generatePayslips()
 	m_payslipManagementService->generatePayslips();
 }
 
+payslipMap& ZenvyController::getPayslips() 
+{
+	return m_payslipManagementService->getPayslips();
+}
+
 void ZenvyController::loadStates()
 {
 	m_employeeManagementService->loadEmployees();

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

@@ -60,6 +60,7 @@ public:
 		//Payslip management
 		void updateSalary(const std::string&, double, double, double, double, double);
 		void generatePayslips();
+		payslipMap& getPayslips();
 
 		//File Management
 		void loadStates();

Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.cpp

@@ -26,6 +26,10 @@ void PayslipManagementService::updateSalary(const std::string& employeeId, doubl
 	}
 }
 
+payslipMap& PayslipManagementService::getPayslips() {
+	return m_dataStore.getPayslips();
+}
+
 void PayslipManagementService::generatePayslips()
 {
 	util::enforceAuthorization(m_dataStore.getAuthenticatedEmployee()->getEmployeeType(), Enums::EmployeeType::FINANCE);

Trenser.Zenvy/Trenser.Zenvy/services/PayslipManagementService.h

@@ -3,6 +3,8 @@
 #include<stdexcept>
 #include"DataStore.h"
 
+using payslipMap = std::map<std::string, std::shared_ptr<Payslip>>;
+
 class PayslipManagementService
 {
 private:
@@ -10,6 +12,7 @@ private:
 public:
 	PayslipManagementService() : m_dataStore(DataStore::getInstance()) {};
 	void updateSalary(const std::string&, double, double, double, double, double);
+	payslipMap& getPayslips();
 	void generatePayslips();
 	void loadPayrolls();
 	void savePayrolls();

Trenser.Zenvy/Trenser.Zenvy/utilities/Enums.h

@@ -91,6 +91,23 @@ namespace Enums {
         INVALID_PASSWORD
     };
 
+    enum class Month
+    {
+        JANUARY,
+        FEBRUARY,
+        MARCH,
+        APRIL,
+        MAY,
+        JUNE,
+        JULY,
+        AUGUST,
+        SEPTEMBER,
+        OCTOBER,
+        NOVEMBER,
+        DECEMBER,
+        INVALID
+    };
+
     inline std::string getAccountStatusString(AccountStatus status)
     {
         switch (status)
@@ -170,6 +187,27 @@ namespace Enums {
         }
     }
 
+    inline std::string getMonthString(Month month)
+    {
+        switch (month)
+        {
+        case Month::JANUARY :  return "January";
+        case Month::FEBRUARY:  return "February";
+        case Month::MARCH:  return "March";
+        case Month::APRIL:  return "April";
+        case Month::MAY:  return "May";
+        case Month::JUNE:  return "June";
+        case Month::JULY:  return "July";
+        case Month::AUGUST:  return "August";
+        case Month::SEPTEMBER:  return "September";
+        case Month::OCTOBER: return "October";
+        case Month::NOVEMBER: return "November";
+        case Month::DECEMBER: return "December";
+        case Month::INVALID: return "Invalid Month";
+        default: return "Unknown";
+        }
+    }
+
     inline AccountStatus getAccountStatus(const std::string& input)
     {
         if (input == "ACTIVE")
@@ -245,4 +283,26 @@ namespace Enums {
         }
         return EmployeeDesignation::INVALID;
     }
+    
+    inline Month getMonth(const int inputMonth)
+    {
+        switch (inputMonth)
+        {
+        case 1:  return Month::JANUARY;
+        case 2:  return Month::FEBRUARY;
+        case 3:  return Month::MARCH;
+        case 4:  return Month::APRIL;
+        case 5:  return Month::MAY;
+        case 6:  return Month::JUNE;
+        case 7:  return Month::JULY;
+        case 8:  return Month::AUGUST;
+        case 9:  return Month::SEPTEMBER;
+        case 10: return Month::OCTOBER;
+        case 11: return Month::NOVEMBER;
+        case 12: return Month::DECEMBER;
+        default: return Month::INVALID;
         }
+    }
+
+}
+

Trenser.Zenvy/Trenser.Zenvy/views/EmployeeMenu.cpp

@@ -33,17 +33,16 @@ bool EmployeeMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
-	/*
+	/*case 1:
-	case 1:
 		m_zenvyController.applyLeave();
 		break;
 	case 2:
 		m_zenvyController.viewPayslip();
-		break;
+		break;*/
 	case 3:
-		m_zenvyController.viewPayslipHistory();
+		viewPayslipHistory(m_zenvyController);
 		break;
-	case 4 :
+	/*case 4 :
 		m_zenvyController.raiseTicket();
 		break;
 	case 5 :

Trenser.Zenvy/Trenser.Zenvy/views/FinanceExecutiveMenu.cpp

@@ -65,6 +65,9 @@ bool FinanceExecutiveMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
+	case 3:
+		viewPayslipHistory(m_zenvyController);
+		break;
 	case 4:
 		viewEmployees(m_zenvyController);
 		break;

Trenser.Zenvy/Trenser.Zenvy/views/HRManagerMenu.cpp

@@ -32,6 +32,9 @@ bool HRManagerMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
+	case 3:
+		viewPayslipHistory(m_zenvyController);
+		break;
 	case 4:
 		viewEmployees(m_zenvyController);
 		break;

Trenser.Zenvy/Trenser.Zenvy/views/ITExecutiveMenu.cpp

@@ -32,6 +32,9 @@ bool ITExecutiveMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
+	case 3:
+		viewPayslipHistory(m_zenvyController);
+		break;
 	case 4:
 		viewEmployees(m_zenvyController);
 		break;

Trenser.Zenvy/Trenser.Zenvy/views/MenuHelper.h

@@ -2,7 +2,9 @@
 #include <map>
 #include <memory>
 #include <vector>
+#include <string>
 #include <iostream>
+#include <sstream>
 #include <iomanip>
 #include <utility>
 #include "Enums.h"
@@ -15,6 +17,33 @@
 
 void createEmployee(std::shared_ptr<ZenvyController> controller);
 
+inline void viewPayslipHistory(std::shared_ptr<ZenvyController> controller)
+{
+    auto employeePayslips = controller->getCurrentEmployee()->getEmployeePayslips();
+    util::clear();
+    std::cout << "Payslips\n" << std::endl;
+    std::cout << std::left
+        << std::setw(15) << "Date"
+        << std::setw(15) << "Payslip ID"
+        << std::setw(15) << "Employee ID"
+        << std::setw(12) << "Salary"
+        << std::setw(25) << "TimeStamp"
+        << std::endl;
+    for (const auto& payslip : employeePayslips) 
+    {
+        std::ostringstream dateStream;
+        dateStream << payslip.second->getTimestamp().getYear() << " - " << Enums::getMonthString(Enums::getMonth(payslip.second->getTimestamp().getMonth()));
+        std::cout << std::left
+            << std::setw(15) << dateStream.str()
+            << std::setw(15) << payslip.first
+            << std::setw(15) << payslip.second->getEmployeeId()
+            << std::setw(12) << payslip.second->getSalary()
+            << std::setw(25) << payslip.second->getTimestamp().toString()
+            << std::endl;
+    }
+    util::pressEnter();
+}
+
 inline void viewProfile(std::shared_ptr<ZenvyController> controller) 
 {
     util::clear();

Trenser.Zenvy/Trenser.Zenvy/views/TalentExecutiveMenu.cpp

@@ -32,6 +32,9 @@ bool TalentExecutiveMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
+	case 3:
+		viewPayslipHistory(m_zenvyController);
+		break;
 	case 4:
 		viewEmployees(m_zenvyController);
 		break;

Trenser.Zenvy/Trenser.Zenvy/views/TeamExecutiveMenu.cpp

@@ -32,6 +32,9 @@ bool TeamExecutiveMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
+	case 3:
+		viewPayslipHistory(m_zenvyController);
+		break;
 	case 4:
 		viewEmployees(m_zenvyController);
 		break;

Trenser.Zenvy/Trenser.Zenvy/views/TeamLeadMenu.cpp

@@ -32,6 +32,9 @@ bool TeamLeadMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
+	case 3:
+		viewPayslipHistory(m_zenvyController);
+		break;
 	case 7:
 		viewEmployees(m_zenvyController);
 		break;