src/main/java/com/primefactorsolutions/model/Document.java

@@ -13,6 +13,9 @@ public class Document extends BaseEntity {
     private String fileName;
     @Enumerated(EnumType.STRING)
     private DocumentType documentType;
+    @ManyToOne
+    @JoinColumn(name = "employee_id", nullable = false)
+    private Employee employee;
     @Lob
     @Column(columnDefinition = "BLOB")
     private byte[] fileData;

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

@@ -2,20 +2,20 @@ package com.primefactorsolutions.service;
 
 import com.primefactorsolutions.model.Document;
 import com.primefactorsolutions.repositories.DocumentRepository;
+import lombok.AllArgsConstructor;
+import org.apache.commons.beanutils.BeanComparator;
 import org.springframework.stereotype.Service;
 
+import java.util.Collections;
 import java.util.List;
 import java.util.UUID;
 import java.util.Optional;
 
 @Service
+@AllArgsConstructor
 public class DocumentService {
     private final DocumentRepository documentRepository;
 
-    public DocumentService(final DocumentRepository documentRepository) {
-        this.documentRepository = documentRepository;
-    }
-
     public void saveDocument(final Document newDocument) {
         documentRepository.save(newDocument);
     }
@@ -24,7 +24,29 @@ public class DocumentService {
         return documentRepository.findAll();
     }
 
-    public Optional<Document> getDocumentById(final UUID id) {
-        return documentRepository.findById(id);
+    public Document getDocument(final UUID id) {
+        Optional<Document> employee = documentRepository.findById(id);
+        return employee.orElse(null);
+    }
+
+    public List<Document> findDocuments(
+            final int start, final int pageSize, final String sortProperty, final boolean asc) {
+        List<Document> documents = documentRepository.findAll();
+
+        int end = Math.min(start + pageSize, documents.size());
+        documents.sort(new BeanComparator<>(sortProperty));
+
+        if (!asc) {
+            Collections.reverse(documents);
+        }
+
+        return documents.subList(start, end);
+    }
+
+    public List<Document> findDocuments(final int start, final int pageSize) {
+        List<Document> employees = documentRepository.findAll();
+
+        int end = Math.min(start + pageSize, employees.size());
+        return employees.subList(start, end);
     }
 }

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

@@ -5,31 +5,32 @@ import com.primefactorsolutions.model.DocumentType;
 import com.primefactorsolutions.model.Employee;
 import com.primefactorsolutions.service.DocumentService;
 import com.primefactorsolutions.service.EmployeeService;
+import com.vaadin.flow.component.Component;
 import com.vaadin.flow.component.button.Button;
 import com.vaadin.flow.component.combobox.ComboBox;
 import com.vaadin.flow.component.html.H2;
-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.component.textfield.TextField;
 import com.vaadin.flow.component.upload.Upload;
 import com.vaadin.flow.component.upload.receivers.MemoryBuffer;
-import com.vaadin.flow.router.PageTitle;
-import com.vaadin.flow.router.Route;
+import com.vaadin.flow.router.*;
 import com.vaadin.flow.spring.annotation.SpringComponent;
 import jakarta.annotation.security.PermitAll;
 import org.springframework.context.annotation.Scope;
+import org.vaadin.firitin.form.BeanValidationForm;
 
 import java.io.IOException;
 import java.util.List;
+import java.util.UUID;
 
 @SpringComponent
 @PermitAll
 @Scope("prototype")
-@PageTitle("Documents")
-@Route(value = "/documents", layout = MainLayout.class)
-public class DocumentsView extends Main {
+@PageTitle("Document")
+@Route(value = "/documents/:documentId?/:action?", layout = MainLayout.class)
+public class DocumentView extends BeanValidationForm<Document> implements HasUrlParameter<String> {
 
+    private final H2 title = new H2("Edit Documents");
     private final TextField fileName = new TextField("Document Name");
     private final ComboBox<DocumentType> documentType = new ComboBox<>("Document Type");
     private final ComboBox<Employee> employeeComboBox = new ComboBox<>("Employee");
@@ -39,11 +40,11 @@ public class DocumentsView extends Main {
     private final EmployeeService employeeService;
     private boolean fileUploaded = false;
 
-    public DocumentsView(final DocumentService documentService, final EmployeeService employeeService) {
+    public DocumentView(final DocumentService documentService, final EmployeeService employeeService) {
+        super(Document.class);
         this.documentService = documentService;
         this.employeeService = employeeService;
         initializeView();
-        addComponents();
     }
 
     private void initializeView() {
@@ -75,27 +76,27 @@ public class DocumentsView extends Main {
         uploadButton.addSucceededListener(event -> handleUploadSuccess());
     }
 
-    private void addComponents() {
-        H2 title = new H2("Edit Documents");
-        Button saveButton = createSaveButton();
-        Button closeButton = createCloseButton();
-        HorizontalLayout buttonLayout = new HorizontalLayout(saveButton, closeButton);
-
-        add(title, fileName, documentType, employeeComboBox, uploadButton, buttonLayout);
-    }
-
-    private Button createSaveButton() {
+    protected  Button createSaveButton() {
         Button saveButton = new Button("Save");
         saveButton.addClickListener(event -> saveDocument());
         return saveButton;
     }
 
-    private Button createCloseButton() {
+    protected  Button createCloseButton() {
         Button closeButton = new Button("Close");
         closeButton.addClickListener(event -> closeForm());
         return closeButton;
     }
 
+
+    private void closeForm() {
+        navigateToDocumentsListView();
+    }
+
+    private void navigateToDocumentsListView() {
+        getUI().ifPresent(ui -> ui.navigate(DocumentsListView.class));
+    }
+
     private void handleUploadSuccess() {
         fileUploaded = true;
         Notification.show("File uploaded successfully.");
@@ -104,6 +105,7 @@ public class DocumentsView extends Main {
     private void saveDocument() {
         if (isFormValid()) {
             Document document = createDocument();
+            document.setEmployee(employeeComboBox.getValue());
             documentService.saveDocument(document);
             Notification.show("File saved successfully.");
             clearForm();
@@ -143,7 +145,23 @@ public class DocumentsView extends Main {
         fileUploaded = false;
     }
 
-    private void closeForm() {
-        clearForm();
+
+    @Override
+    public void setParameter(final BeforeEvent beforeEvent, final String action) {
+        final RouteParameters params = beforeEvent.getRouteParameters();
+        final String s = params.get("documentId").orElse(null);
+
+        if ("new".equals(action)) {
+            setEntityWithEnabledSave(new Document());
+        } else {
+            UUID documentId = UUID.fromString(s);
+            var document = documentService.getDocument(documentId);
+            setEntityWithEnabledSave(document);
+        }
+    }
+
+    @Override
+    protected List<Component> getFormComponents() {
+        return List.of(title, fileName, documentType, employeeComboBox, uploadButton, createCloseButton());
     }
 }

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

@@ -0,0 +1,143 @@
+package com.primefactorsolutions.views;
+
+import com.primefactorsolutions.model.Document;
+import com.primefactorsolutions.model.DocumentType;
+import com.primefactorsolutions.model.Employee;
+import com.primefactorsolutions.service.DocumentService;
+import com.primefactorsolutions.service.EmployeeService;
+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.html.Span;
+import com.vaadin.flow.router.PageTitle;
+import com.vaadin.flow.router.Route;
+import com.vaadin.flow.spring.annotation.SpringComponent;
+import org.vaadin.firitin.components.grid.PagingGrid;
+import com.vaadin.flow.component.grid.GridSortOrder;
+import com.vaadin.flow.data.provider.SortDirection;
+import jakarta.annotation.security.PermitAll;
+import org.springframework.context.annotation.Scope;
+
+import java.util.List;
+
+
+@SpringComponent
+@Scope("prototype")
+@PageTitle("Documents")
+@Route(value = "/documents", layout = MainLayout.class)
+@PermitAll
+public class DocumentsListView extends Main {
+
+    private final DocumentService documentService;
+    private final EmployeeService employeeService;
+    private final PagingGrid<Document> documentGrid = new PagingGrid<>(Document.class);
+
+    public DocumentsListView(final DocumentService documentService, final EmployeeService employeeService) {
+        this.documentService = documentService;
+        this.employeeService = employeeService;
+        initializeView();
+        updateDocumentGrid();
+    }
+
+    private void initializeView() {
+        configureDocumentGrid();
+        add(createActionButton("Add Document", this::navigateToAddDocumentView));
+        add(createDocumentTypeFilter());
+        add(createEmployeeFilter());
+        add(documentGrid);
+    }
+
+    private void configureDocumentGrid() {
+        documentGrid.setColumns("fileName", "documentType");
+        documentGrid.addComponentColumn(this::createEmployeeSpan).setHeader("Employee");
+        addDocumentActionColumn("View", this::navigateToDocumentView);
+        addDocumentActionColumn("Edit", this::navigateToEditDocumentView);
+        addDocumentActionColumn("Download", this::navigateToDownloadDocumentView);
+        configurePagination();
+    }
+
+    private Span createEmployeeSpan(final Document document) {
+        Employee employee = document.getEmployee();
+        String employeeName = employee.getFirstName() + " " + employee.getLastName();
+        return new Span(employeeName);
+    }
+
+
+    private void addDocumentActionColumn(final String label, final DocumentActionHandler handler) {
+        documentGrid.addComponentColumn(document -> createActionButton(label, () -> handler.handle(document)));
+    }
+
+    private Button createActionButton(final String label, final Runnable onClickAction) {
+        Button actionButton = new Button(label);
+        actionButton.addClickListener(event -> onClickAction.run());
+        return actionButton;
+    }
+
+    private ComboBox<DocumentType> createDocumentTypeFilter() {
+        ComboBox<DocumentType> documentTypeFilter = new ComboBox<>("Document Type");
+        documentTypeFilter.setItems(DocumentType.values());
+        documentTypeFilter.addValueChangeListener(event -> updateDocumentGrid());
+        return documentTypeFilter;
+    }
+
+    private ComboBox<Employee> createEmployeeFilter() {
+        ComboBox<Employee> employeeFilter = new ComboBox<>("Employee");
+        List<Employee> employees = employeeService.findAllEmployees();
+        employeeFilter.setItems(employees);
+        employeeFilter.setItemLabelGenerator(employee -> employee.getFirstName() + " " + employee.getLastName());
+        employeeFilter.addValueChangeListener(event -> updateDocumentGrid());
+        return employeeFilter;
+    }
+
+    private void navigateToEditDocumentView(final Document document) {
+        navigateToDocumentView(document, "edit");
+    }
+
+    private void navigateToDocumentView(final Document document) {
+        navigateToDocumentView(document, "view");
+    }
+
+    private void navigateToDocumentView(final Document document, final String action) {
+        getUI().ifPresent(ui -> ui.navigate(DocumentView.class, document.getId().toString() + "/" + action));
+    }
+
+    private void navigateToDownloadDocumentView(final Document document) {
+        // No operation
+    }
+
+    private void navigateToAddDocumentView() {
+        getUI().ifPresent(ui -> ui.navigate(DocumentView.class, "new"));
+    }
+
+    private void configurePagination() {
+        documentGrid.setPaginationBarMode(PagingGrid.PaginationBarMode.BOTTOM);
+        documentGrid.setPageSize(5);
+    }
+
+    private void updateDocumentGrid() {
+        documentGrid.setPagingDataProvider((page, pageSize) -> fetchDocuments((int) page, pageSize));
+    }
+
+    private List<Document> fetchDocuments(final int page, final int size) {
+        int startIndex = page * size;
+        return isSortOrderPresent()
+                ? fetchSortedDocuments(startIndex, size)
+                : documentService.findDocuments(startIndex, size);
+    }
+
+    private boolean isSortOrderPresent() {
+        return !documentGrid.getSortOrder().isEmpty();
+    }
+
+    private List<Document> fetchSortedDocuments(final int start, final int pageSize) {
+        GridSortOrder<Document> sortOrder = documentGrid.getSortOrder().getFirst();
+        return documentService.findDocuments(start, pageSize,
+                sortOrder.getSorted().getKey(),
+                sortOrder.getDirection() == SortDirection.ASCENDING);
+    }
+
+    @FunctionalInterface
+    private interface DocumentActionHandler {
+        void handle(Document document);
+    }
+}

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

@@ -81,7 +81,7 @@ public class MainLayout extends AppLayout {
                     LineAwesomeIcon.SUPERSCRIPT_SOLID.create());
 //            admin.addItem(new SideNavItem("Employees", EmployeeView.class,
 //                    LineAwesomeIcon.USER_EDIT_SOLID.create()));
-            admin.addItem(new SideNavItem("Documents", DocumentsView.class,
+            admin.addItem(new SideNavItem("Documents", DocumentsListView.class,
                     LineAwesomeIcon.FILE_ALT_SOLID.create()));
 
             SideNavItem timeOff = new SideNavItem("My Time-off", TimeoffView.class,