From b4c6416934197f3dffa8ee46b80d0e35c6aa9ef3 Mon Sep 17 00:00:00 2001
From: Sven Carstensen <sven.carstensen@appcreation.de>
Date: Thu, 14 Aug 2025 15:21:20 +0200
Subject: [PATCH] Erweiterungen

---
 .../pages/jobs/ui/view/ShowJobsView.java      | 71 +++++++++++++++++--
 1 file changed, 65 insertions(+), 6 deletions(-)

diff --git a/src/main/java/de/assecutor/votianlt/pages/jobs/ui/view/ShowJobsView.java b/src/main/java/de/assecutor/votianlt/pages/jobs/ui/view/ShowJobsView.java
index 943c7e5..11efb2e 100644
--- a/src/main/java/de/assecutor/votianlt/pages/jobs/ui/view/ShowJobsView.java
+++ b/src/main/java/de/assecutor/votianlt/pages/jobs/ui/view/ShowJobsView.java
@@ -3,9 +3,11 @@ package de.assecutor.votianlt.pages.jobs.ui.view;
 import com.vaadin.flow.component.datepicker.DatePicker;
 import com.vaadin.flow.component.button.Button;
 import com.vaadin.flow.component.grid.Grid;
+import com.vaadin.flow.component.html.Anchor;
 import com.vaadin.flow.component.html.H2;
 import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
 import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+import com.vaadin.flow.server.StreamResource;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 import de.assecutor.votianlt.model.Job;
@@ -22,6 +24,7 @@ public class ShowJobsView extends VerticalLayout {
     private final DatePicker startDate = new DatePicker("Startdatum");
     private final DatePicker endDate = new DatePicker("Enddatum");
     private final Button applyFilter = new Button("Anwenden");
+    private final Button exportButton = new Button("CSV Export");
     private final JobRepository jobRepository;
     private final Grid<Job> grid = new Grid<>(Job.class, false);
 
@@ -31,8 +34,15 @@ public class ShowJobsView extends VerticalLayout {
         setSizeFull();
         setPadding(true);
         setSpacing(true);
-        // Filterleiste
-        HorizontalLayout filterBar = new HorizontalLayout(startDate, endDate, applyFilter);
+        // Filterleiste mit Export-Button am rechten Rand
+        HorizontalLayout leftFilters = new HorizontalLayout(startDate, endDate, applyFilter);
+        leftFilters.setAlignItems(Alignment.END);
+
+        HorizontalLayout filterBar = new HorizontalLayout();
+        filterBar.setWidthFull();
+        filterBar.add(leftFilters);
+        filterBar.add(exportButton);
+        filterBar.setJustifyContentMode(JustifyContentMode.BETWEEN);
         filterBar.setAlignItems(Alignment.END);
         add(filterBar);
 
@@ -43,14 +53,16 @@ public class ShowJobsView extends VerticalLayout {
         startDate.setValue(today.minusDays(30));
         endDate.setValue(today);
         applyFilter.addClickListener(e -> loadData());
+        exportButton.addClickListener(e -> exportToCsv());
 
 
         // Configure grid columns: Kunde, Auftragsnummer, Auftragsdatum, Zielort
-        grid.addColumn(Job::getDeliveryCompany).setHeader("Kunde").setAutoWidth(true).setFlexGrow(1);
-        grid.addColumn(Job::getJobNumber).setHeader("Auftragsnummer").setAutoWidth(true);
-        grid.addColumn(Job::getCreatedAt).setHeader("Auftragsdatum").setAutoWidth(true);
-        grid.addColumn(Job::getDeliveryCity).setHeader("Zielort").setAutoWidth(true).setFlexGrow(1);
+        grid.addColumn(Job::getDeliveryCompany).setHeader("Kunde").setAutoWidth(true).setFlexGrow(1).setSortable(true);
+        grid.addColumn(Job::getJobNumber).setHeader("Auftragsnummer").setAutoWidth(true).setSortable(true);
+        grid.addColumn(Job::getCreatedAt).setHeader("Auftragsdatum").setAutoWidth(true).setSortable(true);
+        grid.addColumn(Job::getDeliveryCity).setHeader("Zielort").setAutoWidth(true).setFlexGrow(1).setSortable(true);
 
+        grid.setMultiSort(true);
         grid.setSizeFull();
         add(grid);
 
@@ -74,5 +86,52 @@ public class ShowJobsView extends VerticalLayout {
                 .toList();
         grid.setItems(open);
     }
+
+    private void exportToCsv() {
+        var items = grid.getListDataView().getItems().toList();
+
+        StreamResource resource = new StreamResource("auftraege.csv", () -> {
+            java.io.ByteArrayInputStream stream = new java.io.ByteArrayInputStream(generateCsv(items).getBytes(java.nio.charset.StandardCharsets.UTF_8));
+            return stream;
+        });
+        resource.setContentType("text/csv");
+        resource.setCacheTime(0);
+
+        // Create download anchor and trigger immediately
+        Anchor downloadAnchor = new Anchor(resource, "Download CSV");
+        downloadAnchor.getElement().setAttribute("download", "auftraege.csv");
+        downloadAnchor.setTarget("_blank");
+
+        // Add to UI and trigger download via JavaScript
+        add(downloadAnchor);
+        getUI().ifPresent(ui -> ui.getPage().executeJs(
+            "const link = arguments[0]; link.click(); setTimeout(() => link.remove(), 100);",
+            downloadAnchor.getElement()
+        ));
+    }
+
+    private String generateCsv(java.util.List<Job> jobs) {
+        StringBuilder csv = new StringBuilder();
+        // CSV Header
+        csv.append("Kunde,Auftragsnummer,Auftragsdatum,Zielort\n");
+
+        // CSV Data
+        for (Job job : jobs) {
+            csv.append(escapeCsv(job.getDeliveryCompany())).append(",");
+            csv.append(escapeCsv(job.getJobNumber())).append(",");
+            csv.append(job.getCreatedAt() != null ? job.getCreatedAt().toString() : "").append(",");
+            csv.append(escapeCsv(job.getDeliveryCity())).append("\n");
+        }
+
+        return csv.toString();
+    }
+
+    private String escapeCsv(String value) {
+        if (value == null) return "";
+        if (value.contains(",") || value.contains("\"") || value.contains("\n")) {
+            return "\"" + value.replace("\"", "\"\"") + "\"";
+        }
+        return value;
+    }
 }