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

@@ -10,6 +10,7 @@ public abstract class BaseEntity {
     @Id
     @GeneratedValue(strategy = GenerationType.UUID)
     private UUID id;
+    private Employee.Status status;
     private String fileName;
     @Lob
     @Column(columnDefinition = "BLOB")
@@ -62,4 +63,12 @@ public abstract class BaseEntity {
     public DocumentType getDocumentType() {
         return documentType;
     }
+
+    public void setStatus(Employee.Status status) {
+        this.status = status;
+    }
+
+    public Employee.Status getStatus() {
+        return status;
+    }
 }

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

@@ -9,5 +9,27 @@ public enum DocumentType {
     NDA,
     MEMORANDUMS,
     CONTRACT_APPROVAL_MTEPS,
+    BACKGROUND_CHECK_CERTIFICATE,
+    PRE_EMPLOYMENT_EVALUATION,
+    INSURANCE_REGISTRATION_FORM,
+    INSURANCE_CANCELLATION_FORM,
+    PROFESSIONAL_DEGREE_1,
+    PROFESSIONAL_CERTIFICATE_1,
+    PROFESSIONAL_DEGREE_2,
+    PROFESSIONAL_CERTIFICATE_2,
+    PROFESSIONAL_DEGREE_3,
+    PROFESSIONAL_CERTIFICATE_3,
+    GENERAL_LABOR_REGULATIONS,
+    REMOTE_WORK_GUIDELINES,
+    SAFETY_REGULATIONS,
+    HUMAN_RESOURCES_GUIDELINES,
+    ADMINISTRATION_FUNCTIONS_MANUAL,
+    ENGINEERING_FUNCTIONS_MANUAL,
+    GENERAL_LABOR_LAW,
+    SUPREME_DECREE,
+    REGULATORY_RESOLUTION,
+    COMPLEMENTARY_REGULATION,
+    HEALTH_SAFETY_LAW,
+    INTERNSHIP_RULES,
     OTHER
 }

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

@@ -4,7 +4,6 @@
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
-
 import java.time.LocalDate;
 
 @Data
@@ -43,10 +42,4 @@
         WIDOWED,
         DIVORCED
     }
-        public Status getStatus() {
-            return status;
-        }
-        public void setStatus(final Status status) {
-            this.status = status;
-        }
 }

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

@@ -1,16 +1,173 @@
 package com.primefactorsolutions.views;
 
+import com.primefactorsolutions.model.Document;
+import com.primefactorsolutions.model.DocumentType;
+import com.primefactorsolutions.service.DocumentService;
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.dialog.Dialog;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.H2;
+import com.vaadin.flow.component.html.IFrame;
 import com.vaadin.flow.component.html.Main;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.orderedlayout.FlexComponent;
+import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
+import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+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.spring.annotation.SpringComponent;
 import jakarta.annotation.security.PermitAll;
 import org.springframework.context.annotation.Scope;
 
+import java.io.IOException;
+import java.util.Base64;
+
 @SpringComponent
 @PermitAll
 @Scope("prototype")
 @PageTitle("CorporateDocuments")
 @Route(value = "/corporate-documents/me", layout = MainLayout.class)
 public class CorporateDocumentsView extends Main {
+    private final DocumentService documentService;
+    private final MemoryBuffer buffer = new MemoryBuffer();
+    private String lastUploadedFileName = null;
+
+    public CorporateDocumentsView(final DocumentService documentService) {
+        this.documentService = documentService;
+        initializeLayout();
+    }
+
+    private void initializeLayout() {
+        add(createRow("General Labor Regulations", DocumentType.GENERAL_LABOR_REGULATIONS,
+                "Remote Work Guidelines", DocumentType.REMOTE_WORK_GUIDELINES));
+        add(createRow("Safety Regulations", DocumentType.SAFETY_REGULATIONS,
+                "Human Resources Guidelines", DocumentType.HUMAN_RESOURCES_GUIDELINES));
+        add(createRow("Administration Functions Manual", DocumentType.ADMINISTRATION_FUNCTIONS_MANUAL,
+                "Engineering Functions Manual", DocumentType.ENGINEERING_FUNCTIONS_MANUAL));
+    }
+
+    private HorizontalLayout createRow(
+            final String title1,
+            final DocumentType type1,
+            final String title2,
+            final DocumentType type2) {
+
+        HorizontalLayout row = new HorizontalLayout();
+        row.add(
+                createDocumentSection(title1, type1),
+                createDocumentSection(title2, type2)
+        );
+        return row;
+    }
+
+    private Div createDocumentSection(final String title, final DocumentType documentType) {
+        Div section = new Div();
+        section.add(new H2(title));
+
+        Upload upload = createUploadComponent();
+        Button viewButton = createViewButton(documentType);
+        Button saveButton = createSaveButton(viewButton, documentType);
+
+        section.add(createLayout(upload),
+                createLayout(viewButton, new Button("Edit"), saveButton),
+                createAdditionalButtons());
+        return section;
+    }
+
+    private Upload createUploadComponent() {
+        Upload upload = new Upload(buffer);
+        upload.setMaxFiles(1);
+        upload.setAcceptedFileTypes(".pdf");
+        upload.addSucceededListener(event -> handleUploadSuccess(event.getFileName()));
+        return upload;
+    }
+
+    private Button createViewButton(final DocumentType documentType) {
+        Button viewButton = new Button("View");
+        viewButton.setEnabled(documentExists(documentType));
+        viewButton.addClickListener(event -> viewDocument(documentType));
+        return viewButton;
+    }
+
+    private Button createSaveButton(final Button viewButton, final DocumentType documentType) {
+        Button saveButton = new Button("Save");
+        saveButton.addClickListener(event -> saveFile(documentType, viewButton));
+        return saveButton;
+    }
+
+    private void handleUploadSuccess(final String fileName) {
+        lastUploadedFileName = fileName;
+        Notification.show("File uploaded successfully");
+    }
+
+    private HorizontalLayout createLayout(final Component... components) {
+        if (components.length != 1 && components.length != 3) {
+            throw new IllegalArgumentException("This method only accepts 1 or 3 components.");
+        }
+        HorizontalLayout layout = new HorizontalLayout(components);
+        layout.setJustifyContentMode(FlexComponent.JustifyContentMode.CENTER);
+        return layout;
+    }
+
+    private HorizontalLayout createAdditionalButtons() {
+        return createLayout(new Button("Print"), new Button("Download"), new Button("Delete"));
+    }
+
+    private void saveFile(final DocumentType documentType, final Button viewButton) {
+        if (lastUploadedFileName == null) {
+            Notification.show("Please upload a file first.");
+            return;
+        }
+        try {
+            byte[] content = buffer.getInputStream().readAllBytes();
+            documentService.saveDocument(new Document(lastUploadedFileName, documentType, content));
+            Notification.show("File saved successfully.");
+            viewButton.setEnabled(true);
+        } catch (IOException e) {
+            Notification.show("Error saving file: " + e.getMessage());
+        }
+    }
+
+    private boolean documentExists(final DocumentType documentType) {
+        return documentService.getAllDocuments().stream()
+                .anyMatch(doc -> doc.getDocumentType() == documentType);
+    }
+
+    private void viewDocument(final DocumentType documentType) {
+        documentService.getAllDocuments().stream()
+                .filter(doc -> doc.getDocumentType() == documentType)
+                .findFirst()
+                .ifPresentOrElse(this::showPdfDialog, () -> Notification.show("Document not found."));
+    }
+
+    private void showPdfDialog(final Document document) {
+        Dialog dialog = createDialog(document.getFileData());
+        dialog.open();
+    }
+
+    private Dialog createDialog(final byte[] fileData) {
+        Dialog dialog = new Dialog();
+        dialog.setModal(true);
+        dialog.setCloseOnEsc(true);
+        dialog.setCloseOnOutsideClick(true);
+
+        IFrame pdfFrame = new IFrame();
+        pdfFrame.setSrc(createPdfResource(fileData));
+        pdfFrame.setWidth("800px");
+        pdfFrame.setHeight("600px");
+
+        Button closeButton = new Button("Close", event -> dialog.close());
+        VerticalLayout layout = new VerticalLayout(pdfFrame, closeButton);
+        layout.setAlignItems(FlexComponent.Alignment.CENTER);
+
+        dialog.add(layout);
+        return dialog;
+    }
+
+    private String createPdfResource(final byte[] fileData) {
+        return "data:application/pdf;base64," + Base64.getEncoder().encodeToString(fileData);
+    }
 }

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

@@ -47,12 +47,6 @@ public class EmployeesListView extends Main {
         setupPagingGrid();
     }
 
-    private void updateEmployeeStatus(final Employee employee, final boolean isActive) {
-        employee.setStatus(isActive ? Employee.Status.ACTIVE : Employee.Status.INACTIVE);
-        employeeService.createOrUpdate(employee);
-        refreshGrid();
-    }
-
     private void addEditButtonColumn(final String label, final ButtonClickHandler handler) {
         table.addComponentColumn(employee -> createButton(label, () -> handler.handle(employee)));
     }

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

@@ -1,16 +1,181 @@
 package com.primefactorsolutions.views;
 
+import com.primefactorsolutions.model.Document;
+import com.primefactorsolutions.model.DocumentType;
+import com.primefactorsolutions.service.DocumentService;
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.dialog.Dialog;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.H2;
+import com.vaadin.flow.component.html.IFrame;
 import com.vaadin.flow.component.html.Main;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.orderedlayout.FlexComponent;
+import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
+import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+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.spring.annotation.SpringComponent;
 import jakarta.annotation.security.PermitAll;
 import org.springframework.context.annotation.Scope;
 
+import java.io.IOException;
+import java.util.Base64;
+
 @SpringComponent
 @PermitAll
 @Scope("prototype")
 @PageTitle("GovernmentDocumentsView")
 @Route(value = "/government-documents/me", layout = MainLayout.class)
 public class GovernmentDocumentsView extends Main {
+    private final DocumentService documentService;
+    private final MemoryBuffer buffer = new MemoryBuffer();
+    private String lastUploadedFileName = null;
+
+    public GovernmentDocumentsView(final DocumentService documentService) {
+        this.documentService = documentService;
+        initializeLayout();
+    }
+
+    private void initializeLayout() {
+        add(createRow(
+                "General Labor Law", DocumentType.GENERAL_LABOR_LAW,
+                "Supreme Decrees", DocumentType.SUPREME_DECREE
+        ));
+
+        add(createRow(
+                "Regulatory Resolutions/Provisions", DocumentType.REGULATORY_RESOLUTION,
+                "Complementary Regulations", DocumentType.COMPLEMENTARY_REGULATION
+        ));
+
+        add(createRow(
+                "General Law on Hygiene, Health, Occupational Safety, and Well-being", DocumentType.HEALTH_SAFETY_LAW,
+                "Regulatory Framework for Internship Development", DocumentType.INTERNSHIP_RULES
+        ));
+    }
+
+    private HorizontalLayout createRow(
+            final String title1,
+            final DocumentType type1,
+            final String title2,
+            final DocumentType type2) {
+
+        HorizontalLayout row = new HorizontalLayout();
+        row.add(
+                createDocumentSection(title1, type1),
+                createDocumentSection(title2, type2)
+        );
+        return row;
+    }
+
+    private Div createDocumentSection(final String title, final DocumentType documentType) {
+        Div section = new Div();
+        section.add(new H2(title));
+
+        Upload upload = createUploadComponent();
+        Button viewButton = createViewButton(documentType);
+        Button saveButton = createSaveButton(viewButton, documentType);
+
+        section.add(createLayout(upload),
+                createLayout(viewButton, new Button("Edit"), saveButton),
+                createAdditionalButtons());
+        return section;
+    }
+
+    private Upload createUploadComponent() {
+        Upload upload = new Upload(buffer);
+        upload.setMaxFiles(1);
+        upload.setAcceptedFileTypes(".pdf");
+        upload.addSucceededListener(event -> handleUploadSuccess(event.getFileName()));
+        return upload;
+    }
+
+    private Button createViewButton(final DocumentType documentType) {
+        Button viewButton = new Button("View");
+        viewButton.setEnabled(documentExists(documentType));
+        viewButton.addClickListener(event -> viewDocument(documentType));
+        return viewButton;
+    }
+
+    private Button createSaveButton(final Button viewButton, final DocumentType documentType) {
+        Button saveButton = new Button("Save");
+        saveButton.addClickListener(event -> saveFile(documentType, viewButton));
+        return saveButton;
+    }
+
+    private void handleUploadSuccess(final String fileName) {
+        lastUploadedFileName = fileName;
+        Notification.show("File uploaded successfully");
+    }
+
+    private HorizontalLayout createLayout(final Component... components) {
+        if (components.length != 1 && components.length != 3) {
+            throw new IllegalArgumentException("This method only accepts 1 or 3 components.");
+        }
+        HorizontalLayout layout = new HorizontalLayout(components);
+        layout.setJustifyContentMode(FlexComponent.JustifyContentMode.CENTER);
+        return layout;
+    }
+
+    private HorizontalLayout createAdditionalButtons() {
+        return createLayout(new Button("Print"), new Button("Download"), new Button("Delete"));
+    }
+
+    private void saveFile(final DocumentType documentType, final Button viewButton) {
+        if (lastUploadedFileName == null) {
+            Notification.show("Please upload a file first.");
+            return;
+        }
+        try {
+            byte[] content = buffer.getInputStream().readAllBytes();
+            documentService.saveDocument(new Document(lastUploadedFileName, documentType, content));
+            Notification.show("File saved successfully.");
+            viewButton.setEnabled(true);
+        } catch (IOException e) {
+            Notification.show("Error saving file: " + e.getMessage());
+        }
+    }
+
+    private boolean documentExists(final DocumentType documentType) {
+        return documentService.getAllDocuments().stream()
+                .anyMatch(doc -> doc.getDocumentType() == documentType);
+    }
+
+    private void viewDocument(final DocumentType documentType) {
+        documentService.getAllDocuments().stream()
+                .filter(doc -> doc.getDocumentType() == documentType)
+                .findFirst()
+                .ifPresentOrElse(this::showPdfDialog, () -> Notification.show("Document not found."));
+    }
+
+    private void showPdfDialog(final Document document) {
+        Dialog dialog = createDialog(document.getFileData());
+        dialog.open();
+    }
+
+    private Dialog createDialog(final byte[] fileData) {
+        Dialog dialog = new Dialog();
+        dialog.setModal(true);
+        dialog.setCloseOnEsc(true);
+        dialog.setCloseOnOutsideClick(true);
+
+        IFrame pdfFrame = new IFrame();
+        pdfFrame.setSrc(createPdfResource(fileData));
+        pdfFrame.setWidth("800px");
+        pdfFrame.setHeight("600px");
+
+        Button closeButton = new Button("Close", event -> dialog.close());
+        VerticalLayout layout = new VerticalLayout(pdfFrame, closeButton);
+        layout.setAlignItems(FlexComponent.Alignment.CENTER);
+
+        dialog.add(layout);
+        return dialog;
+    }
+
+    private String createPdfResource(final byte[] fileData) {
+        return "data:application/pdf;base64," + Base64.getEncoder().encodeToString(fileData);
+    }
 }

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

@@ -1,16 +1,178 @@
 package com.primefactorsolutions.views;
 
+import com.primefactorsolutions.model.Document;
+import com.primefactorsolutions.model.DocumentType;
+import com.primefactorsolutions.service.DocumentService;
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.dialog.Dialog;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.H2;
+import com.vaadin.flow.component.html.IFrame;
 import com.vaadin.flow.component.html.Main;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.orderedlayout.FlexComponent;
+import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
+import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+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.spring.annotation.SpringComponent;
 import jakarta.annotation.security.PermitAll;
 import org.springframework.context.annotation.Scope;
 
+import java.io.IOException;
+import java.util.Base64;
+
 @SpringComponent
 @PermitAll
 @Scope("prototype")
 @PageTitle("PersonalDocuments")
 @Route(value = "/personal-documents/me", layout = MainLayout.class)
 public class PersonalDocumentsView extends Main {
+    private final DocumentService documentService;
+    private final MemoryBuffer buffer = new MemoryBuffer();
+    private String lastUploadedFileName = null;
+
+    public PersonalDocumentsView(final DocumentService documentService) {
+        this.documentService = documentService;
+        initializeLayout();
+    }
+
+    private void initializeLayout() {
+        add(createRow("Identity Card", DocumentType.ID_CARD,
+                "Background check certificate", DocumentType.BACKGROUND_CHECK_CERTIFICATE));
+        add(createRow("Pre-employment evaluation", DocumentType.PRE_EMPLOYMENT_EVALUATION,
+                "Insurance registration form", DocumentType.INSURANCE_REGISTRATION_FORM));
+        add(createRow());
+    }
+
+    private HorizontalLayout createRow(
+            final String title1,
+            final DocumentType type1,
+            final String title2,
+            final DocumentType type2) {
+
+        HorizontalLayout row = new HorizontalLayout();
+        row.add(
+                createDocumentSection(title1, type1),
+                createDocumentSection(title2, type2)
+        );
+        return row;
+    }
+
+    private HorizontalLayout createRow() {
+        HorizontalLayout row = new HorizontalLayout();
+        row.add(createDocumentSection("Insurance cancellation form", DocumentType.INSURANCE_CANCELLATION_FORM));
+        return row;
+    }
+
+    private Div createDocumentSection(final String title, final DocumentType documentType) {
+        Div section = new Div();
+        section.add(new H2(title));
+
+        Upload upload = createUploadComponent();
+        Button viewButton = createViewButton(documentType);
+        Button saveButton = createSaveButton(viewButton, documentType);
+
+        section.add(createLayout(upload),
+                createLayout(viewButton, new Button("Edit"), saveButton),
+                createAdditionalButtons());
+        return section;
+    }
+
+    private Upload createUploadComponent() {
+        Upload upload = new Upload(buffer);
+        upload.setMaxFiles(1);
+        upload.setAcceptedFileTypes(".pdf");
+        upload.addSucceededListener(event -> handleUploadSuccess(event.getFileName()));
+        return upload;
+    }
+
+    private Button createViewButton(final DocumentType documentType) {
+        Button viewButton = new Button("View");
+        viewButton.setEnabled(documentExists(documentType));
+        viewButton.addClickListener(event -> viewDocument(documentType));
+        return viewButton;
+    }
+
+    private Button createSaveButton(final Button viewButton, final DocumentType documentType) {
+        Button saveButton = new Button("Save");
+        saveButton.addClickListener(event -> saveFile(documentType, viewButton));
+        return saveButton;
+    }
+
+    private void handleUploadSuccess(final String fileName) {
+        lastUploadedFileName = fileName;
+        Notification.show("File uploaded successfully");
+    }
+
+    private HorizontalLayout createLayout(final Component... components) {
+        if (components.length != 1 && components.length != 3) {
+            throw new IllegalArgumentException("This method only accepts 1 or 3 components.");
+        }
+        HorizontalLayout layout = new HorizontalLayout(components);
+        layout.setJustifyContentMode(FlexComponent.JustifyContentMode.CENTER);
+        return layout;
+    }
+
+    private HorizontalLayout createAdditionalButtons() {
+        return createLayout(new Button("Print"), new Button("Download"), new Button("Delete"));
+    }
+
+    private void saveFile(final DocumentType documentType, final Button viewButton) {
+        if (lastUploadedFileName == null) {
+            Notification.show("Please upload a file first.");
+            return;
+        }
+        try {
+            byte[] content = buffer.getInputStream().readAllBytes();
+            documentService.saveDocument(new Document(lastUploadedFileName, documentType, content));
+            Notification.show("File saved successfully.");
+            viewButton.setEnabled(true);
+        } catch (IOException e) {
+            Notification.show("Error saving file: " + e.getMessage());
+        }
+    }
+
+    private boolean documentExists(final DocumentType documentType) {
+        return documentService.getAllDocuments().stream()
+                .anyMatch(doc -> doc.getDocumentType() == documentType);
+    }
+
+    private void viewDocument(final DocumentType documentType) {
+        documentService.getAllDocuments().stream()
+                .filter(doc -> doc.getDocumentType() == documentType)
+                .findFirst()
+                .ifPresentOrElse(this::showPdfDialog, () -> Notification.show("Document not found."));
+    }
+
+    private void showPdfDialog(final Document document) {
+        Dialog dialog = createDialog(document.getFileData());
+        dialog.open();
+    }
+
+    private Dialog createDialog(final byte[] fileData) {
+        Dialog dialog = new Dialog();
+        dialog.setModal(true);
+        dialog.setCloseOnEsc(true);
+        dialog.setCloseOnOutsideClick(true);
+
+        IFrame pdfFrame = new IFrame();
+        pdfFrame.setSrc(createPdfResource(fileData));
+        pdfFrame.setWidth("800px");
+        pdfFrame.setHeight("600px");
+
+        Button closeButton = new Button("Close", event -> dialog.close());
+        VerticalLayout layout = new VerticalLayout(pdfFrame, closeButton);
+        layout.setAlignItems(FlexComponent.Alignment.CENTER);
+
+        dialog.add(layout);
+        return dialog;
+    }
+
+    private String createPdfResource(final byte[] fileData) {
+        return "data:application/pdf;base64," + Base64.getEncoder().encodeToString(fileData);
+    }
 }

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

@@ -1,16 +1,173 @@
 package com.primefactorsolutions.views;
 
+import com.primefactorsolutions.model.Document;
+import com.primefactorsolutions.model.DocumentType;
+import com.primefactorsolutions.service.DocumentService;
+import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.button.Button;
+import com.vaadin.flow.component.dialog.Dialog;
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.H2;
+import com.vaadin.flow.component.html.IFrame;
 import com.vaadin.flow.component.html.Main;
+import com.vaadin.flow.component.notification.Notification;
+import com.vaadin.flow.component.orderedlayout.FlexComponent;
+import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
+import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+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.spring.annotation.SpringComponent;
 import jakarta.annotation.security.PermitAll;
 import org.springframework.context.annotation.Scope;
 
+import java.io.IOException;
+import java.util.Base64;
+
 @SpringComponent
 @PermitAll
 @Scope("prototype")
 @PageTitle("ProfessionalDocuments")
 @Route(value = "/professional-documents/me", layout = MainLayout.class)
 public class ProfessionalDocumentsView extends Main {
+    private final DocumentService documentService;
+    private final MemoryBuffer buffer = new MemoryBuffer();
+    private String lastUploadedFileName = null;
+
+    public ProfessionalDocumentsView(final DocumentService documentService) {
+        this.documentService = documentService;
+        initializeLayout();
+    }
+
+    private void initializeLayout() {
+        add(createRow("Professional Degree 1", DocumentType.PROFESSIONAL_DEGREE_1,
+                "Professional Certificate 1", DocumentType.PROFESSIONAL_CERTIFICATE_1));
+        add(createRow("Professional Degree 2", DocumentType.PROFESSIONAL_DEGREE_2,
+                "Professional Certificate 2", DocumentType.PROFESSIONAL_CERTIFICATE_2));
+        add(createRow("Professional Degree 3", DocumentType.PROFESSIONAL_DEGREE_3,
+                "Professional Certificate 3", DocumentType.PROFESSIONAL_CERTIFICATE_3));
+    }
+
+    private HorizontalLayout createRow(
+            final String title1,
+            final DocumentType type1,
+            final String title2,
+            final DocumentType type2) {
+
+        HorizontalLayout row = new HorizontalLayout();
+        row.add(
+                createDocumentSection(title1, type1),
+                createDocumentSection(title2, type2)
+        );
+        return row;
+    }
+
+    private Div createDocumentSection(final String title, final DocumentType documentType) {
+        Div section = new Div();
+        section.add(new H2(title));
+
+        Upload upload = createUploadComponent();
+        Button viewButton = createViewButton(documentType);
+        Button saveButton = createSaveButton(viewButton, documentType);
+
+        section.add(createLayout(upload),
+                createLayout(viewButton, new Button("Edit"), saveButton),
+                createAdditionalButtons());
+        return section;
+    }
+
+    private Upload createUploadComponent() {
+        Upload upload = new Upload(buffer);
+        upload.setMaxFiles(1);
+        upload.setAcceptedFileTypes(".pdf");
+        upload.addSucceededListener(event -> handleUploadSuccess(event.getFileName()));
+        return upload;
+    }
+
+    private Button createViewButton(final DocumentType documentType) {
+        Button viewButton = new Button("View");
+        viewButton.setEnabled(documentExists(documentType));
+        viewButton.addClickListener(event -> viewDocument(documentType));
+        return viewButton;
+    }
+
+    private Button createSaveButton(final Button viewButton, final DocumentType documentType) {
+        Button saveButton = new Button("Save");
+        saveButton.addClickListener(event -> saveFile(documentType, viewButton));
+        return saveButton;
+    }
+
+    private void handleUploadSuccess(final String fileName) {
+        lastUploadedFileName = fileName;
+        Notification.show("File uploaded successfully");
+    }
+
+    private HorizontalLayout createLayout(final Component... components) {
+        if (components.length != 1 && components.length != 3) {
+            throw new IllegalArgumentException("This method only accepts 1 or 3 components.");
+        }
+        HorizontalLayout layout = new HorizontalLayout(components);
+        layout.setJustifyContentMode(FlexComponent.JustifyContentMode.CENTER);
+        return layout;
+    }
+
+    private HorizontalLayout createAdditionalButtons() {
+        return createLayout(new Button("Print"), new Button("Download"), new Button("Delete"));
+    }
+
+    private void saveFile(final DocumentType documentType, final Button viewButton) {
+        if (lastUploadedFileName == null) {
+            Notification.show("Please upload a file first.");
+            return;
+        }
+        try {
+            byte[] content = buffer.getInputStream().readAllBytes();
+            documentService.saveDocument(new Document(lastUploadedFileName, documentType, content));
+            Notification.show("File saved successfully.");
+            viewButton.setEnabled(true);
+        } catch (IOException e) {
+            Notification.show("Error saving file: " + e.getMessage());
+        }
+    }
+
+    private boolean documentExists(final DocumentType documentType) {
+        return documentService.getAllDocuments().stream()
+                .anyMatch(doc -> doc.getDocumentType() == documentType);
+    }
+
+    private void viewDocument(final DocumentType documentType) {
+        documentService.getAllDocuments().stream()
+                .filter(doc -> doc.getDocumentType() == documentType)
+                .findFirst()
+                .ifPresentOrElse(this::showPdfDialog, () -> Notification.show("Document not found."));
+    }
+
+    private void showPdfDialog(final Document document) {
+        Dialog dialog = createDialog(document.getFileData());
+        dialog.open();
+    }
+
+    private Dialog createDialog(final byte[] fileData) {
+        Dialog dialog = new Dialog();
+        dialog.setModal(true);
+        dialog.setCloseOnEsc(true);
+        dialog.setCloseOnOutsideClick(true);
+
+        IFrame pdfFrame = new IFrame();
+        pdfFrame.setSrc(createPdfResource(fileData));
+        pdfFrame.setWidth("800px");
+        pdfFrame.setHeight("600px");
+
+        Button closeButton = new Button("Close", event -> dialog.close());
+        VerticalLayout layout = new VerticalLayout(pdfFrame, closeButton);
+        layout.setAlignItems(FlexComponent.Alignment.CENTER);
+
+        dialog.add(layout);
+        return dialog;
+    }
+
+    private String createPdfResource(final byte[] fileData) {
+        return "data:application/pdf;base64," + Base64.getEncoder().encodeToString(fileData);
+    }
 }