src/main/java/com/primefactorsolutions/repositories/TimeOffRequestRepository.java

@@ -13,4 +13,5 @@ public interface TimeOffRequestRepository extends JpaRepository<TimeOffRequest,
     List<TimeOffRequest> findByEmployeeId(UUID idEmployee);
     Optional<TimeOffRequest> findByEmployeeIdAndState(UUID employeeId, TimeOffRequestStatus state);
     List<TimeOffRequest> findByEmployeeIdAndCategory(UUID employeeId, TimeOffRequestType category);
+    List<TimeOffRequest> findByState(TimeOffRequestStatus state);
 }

src/main/java/com/primefactorsolutions/service/TimeOffRequestService.java

@@ -31,6 +31,10 @@ public class TimeOffRequestService {
         return timeOffRequest.orElse(null);
     }
 
+    public List<TimeOffRequest> findRequestsByState(TimeOffRequestStatus state) {
+        return timeOffRequestRepository.findByState(state);
+    }
+
     public List<TimeOffRequest> findRequestsByEmployeeId(final UUID idEmployee) {
         return timeOffRequestRepository.findByEmployeeId(idEmployee);
     }

src/main/java/com/primefactorsolutions/views/MainLayout.java

@@ -143,9 +143,11 @@ public class MainLayout extends AppLayout {
             SideNavItem timeOff = new SideNavItem("My Time-off", TimeoffView.class,
                     LineAwesomeIcon.PLANE_DEPARTURE_SOLID.create());
             timeOff.addItem(new SideNavItem("Vacations", RequestsListView.class,
-                    LineAwesomeIcon.SUN.create()));
+                    LineAwesomeIcon.UMBRELLA_BEACH_SOLID.create()));
             timeOff.addItem(new SideNavItem("Add Vacation", RequestRegisterView.class,
-                    LineAwesomeIcon.SUN.create()));
+                    LineAwesomeIcon.CALENDAR_PLUS.create()));
+            timeOff.addItem(new SideNavItem("Pending Requests", PendingRequestsListView.class,
+                    LineAwesomeIcon.LIST_ALT.create()));
             SideNavItem timesheet = new SideNavItem("My Timesheet", TimesheetView.class,
                     LineAwesomeIcon.HOURGLASS_START_SOLID.create());
             timesheet.addItem(new SideNavItem("Hours Worked", HoursWorkedView.class,

src/main/java/com/primefactorsolutions/views/PendingRequestsListView.java

@@ -0,0 +1,224 @@
+package com.primefactorsolutions.views;
+
+import com.primefactorsolutions.model.*;
+import com.primefactorsolutions.service.EmployeeService;
+import com.primefactorsolutions.service.TeamService;
+import com.primefactorsolutions.service.TimeOffRequestService;
+import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.combobox.ComboBox;
+import com.vaadin.flow.component.html.Main;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
+import com.vaadin.flow.router.PageTitle;
+import com.vaadin.flow.router.Route;
+import com.vaadin.flow.spring.annotation.SpringComponent;
+import jakarta.annotation.security.PermitAll;
+import org.springframework.context.annotation.Scope;
+import org.vaadin.firitin.components.grid.PagingGrid;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+@SpringComponent
+@Scope("prototype")
+@PageTitle("PendingRequests")
+@Route(value = "/pending-requests", layout = MainLayout.class)
+@PermitAll
+public class PendingRequestsListView extends Main {
+
+    private final TimeOffRequestService requestService;
+    private final EmployeeService employeeService;
+    private final TeamService teamService;
+    private final PagingGrid<TimeOffRequest> pendingRequestsGrid = new PagingGrid<>();
+
+    private List<Employee> employees = Collections.emptyList();
+    private ComboBox<Employee> employeeFilter;
+    private ComboBox<Team> teamFilter;
+    private ComboBox<TimeOffRequestType> categoryFilter;
+    private UUID selectedRequestId;
+
+
+    public PendingRequestsListView(final TimeOffRequestService requestService,
+                                   final EmployeeService employeeService,
+                                   final TeamService teamService) {
+        this.requestService = requestService;
+        this.employeeService = employeeService;
+        this.teamService = teamService;
+        this.employees = employeeService.findAllEmployees();
+        initializeView();
+        refreshGeneralPendingRequestsGrid(null, null, null);
+    }
+
+    private void initializeView() {
+        setupFilters();
+        setupPendingRequestsGrid();
+        add(pendingRequestsGrid);
+        add(createActionButtons());
+    }
+
+    private void setupFilters() {
+        add(createEmployeeFilter());
+        add(createTeamFilter());
+        add(createCategoryFilter());
+    }
+
+    private void setupPendingRequestsGrid() {
+        pendingRequestsGrid.addColumn(this::getEmployeeFullName).setHeader("Empleado");
+        pendingRequestsGrid.addColumn(this::getTeamName).setHeader("Equipo");
+        pendingRequestsGrid.addColumn(this::getCategory).setHeader("Categoría");
+
+        pendingRequestsGrid.setPaginationBarMode(PagingGrid.PaginationBarMode.BOTTOM);
+        pendingRequestsGrid.setPageSize(5);
+        pendingRequestsGrid.asSingleSelect().addValueChangeListener(event -> {
+            TimeOffRequest selectedRequest = event.getValue();
+            if (selectedRequest != null) {
+                selectedRequestId = selectedRequest.getId();
+            }
+        });
+    }
+
+    private HorizontalLayout createActionButtons() {
+        Button approveButton = createActionButton("Aprobar", TimeOffRequestStatus.APROBADO);
+        Button rejectButton = createActionButton("Rechazar", TimeOffRequestStatus.RECHAZADO);
+        Button closeButton = new Button("Salir", event -> navigateToMainView());
+        return new HorizontalLayout(approveButton, rejectButton, closeButton);
+    }
+
+    private Button createActionButton(String caption, TimeOffRequestStatus status) {
+        return new Button(caption, event -> {
+            if (selectedRequestId != null) {
+                TimeOffRequest request = requestService.findTimeOffRequest(selectedRequestId);
+                request.setState(status);
+                requestService.saveTimeOffRequest(request);
+                refreshGeneralPendingRequestsGrid(null, null, null);
+            } else {
+                Notification.show("Seleccione una solicitud.", 3000, Notification.Position.MIDDLE);
+            }
+        });
+    }
+
+    private void refreshGeneralPendingRequestsGrid(final Employee employee,
+                                           final Team team,
+                                           final TimeOffRequestType category) {
+        pendingRequestsGrid.setPagingDataProvider((page, pageSize) -> {
+            int start = (int) (page * pendingRequestsGrid.getPageSize());
+            return fetchFilteredPendingRequests(start, pageSize, employee, team, category);
+        });
+        pendingRequestsGrid.getDataProvider().refreshAll();
+    }
+
+    private List<TimeOffRequest> fetchFilteredPendingRequests(final int start,
+                                                  final int pageSize,
+                                                  final Employee employee,
+                                                  final Team team,
+                                                  final TimeOffRequestType category) {
+        List<TimeOffRequest> filteredPendingRequests = requestService.findRequestsByState(TimeOffRequestStatus.PENDIENTE);
+
+        if (employee != null && !"TODOS".equals(employee.getFirstName())) {
+            filteredPendingRequests = filteredPendingRequests.stream()
+                    .filter(emp -> emp.getEmployee().getId().equals(employee.getId()))
+                    .collect(Collectors.toList());
+        }
+
+        if (team != null && !"TODOS".equals(team.getName())) {
+            filteredPendingRequests = filteredPendingRequests.stream()
+                    .filter(emp -> emp.getEmployee().getTeam() != null && emp.getEmployee().getTeam().getId().equals(team.getId()))
+                    .collect(Collectors.toList());
+        }
+
+        if (category != null && category != TimeOffRequestType.TODOS) {
+            filteredPendingRequests = filteredPendingRequests.stream()
+                    .filter(emp -> emp.getCategory().equals(category))
+                    .collect(Collectors.toList());
+        }
+
+        int end = Math.min(start + pageSize, filteredPendingRequests.size());
+        return filteredPendingRequests.subList(start, end);
+    }
+
+    private String getEmployeeFullName(final TimeOffRequest request) {
+        Employee employee = request.getEmployee();
+        return getEmployeeFullNameLabel(employee);
+    }
+
+    private String getEmployeeFullNameLabel(final Employee employee) {
+        return "TODOS".equals(employee.getFirstName()) ? "TODOS" : employee.getFirstName() + " " + employee.getLastName();
+    }
+
+    private String getTeamName(final TimeOffRequest request) {
+        Team team = request.getEmployee().getTeam();
+        return team != null ? team.getName() : "Sin asignar";
+    }
+
+    private String getTeamLabel(final Team team) {
+        return "TODOS".equals(team.getName()) ? "TODOS" : team.getName();
+    }
+
+    private String getCategory(TimeOffRequest request){
+        return String.valueOf(request.getCategory());
+    }
+
+    private ComboBox<Employee> createEmployeeFilter() {
+        employeeFilter = new ComboBox<>("Empleado");
+        List<Employee> employees = new ArrayList<>(employeeService.findAllEmployees());
+        employees.addFirst(createAllEmployeesOption());
+        employeeFilter.setItems(employees);
+        employeeFilter.setItemLabelGenerator(this::getEmployeeFullNameLabel);
+        employeeFilter.setValue(employees.getFirst());
+        employeeFilter.addValueChangeListener(event ->
+                refreshGeneralPendingRequestsGrid(
+                        event.getValue(),
+                        teamFilter.getValue(),
+                        categoryFilter.getValue()
+                )
+        );
+        return employeeFilter;
+    }
+
+    private ComboBox<Team> createTeamFilter() {
+        teamFilter = new ComboBox<>("Equipo");
+        List<Team> teams = new ArrayList<>(teamService.findAllTeams());
+        teams.addFirst(createAllTeamsOption());
+        teamFilter.setItems(teams);
+        teamFilter.setItemLabelGenerator(this::getTeamLabel);
+        teamFilter.setValue(teams.getFirst());
+        teamFilter.addValueChangeListener(event ->
+                refreshGeneralPendingRequestsGrid(
+                        employeeFilter.getValue(),
+                        event.getValue(),
+                        categoryFilter.getValue()
+                )
+        );
+        return teamFilter;
+    }
+
+    private ComboBox<TimeOffRequestType> createCategoryFilter() {
+        categoryFilter = new ComboBox<>("Categoría");
+        categoryFilter.setItems(TimeOffRequestType.values());
+        categoryFilter.setValue(TimeOffRequestType.values()[0]);
+        categoryFilter.addValueChangeListener(event ->
+                refreshGeneralPendingRequestsGrid(
+                        employeeFilter.getValue(),
+                        teamFilter.getValue(),
+                        event.getValue()
+                )
+        );
+        return categoryFilter;
+    }
+
+    private Employee createAllEmployeesOption() {
+        Employee allEmployeesOption = new Employee();
+        allEmployeesOption.setFirstName("TODOS");
+        return allEmployeesOption;
+    }
+
+    private Team createAllTeamsOption() {
+        Team allTeamsOption = new Team();
+        allTeamsOption.setName("TODOS");
+        return allTeamsOption;
+    }
+
+    private void navigateToMainView() {
+        getUI().ifPresent(ui -> ui.navigate(MainView.class));
+    }
+}