From 99ed398c2fecbd016dacedd99b33deb398937ee7 Mon Sep 17 00:00:00 2001
From: Bent Witthold <bent@working-copy.org>
Date: Tue, 6 Jan 2026 10:04:26 +0100
Subject: [PATCH] Simple implementation of CSV export.

---
 data/filehandler.cpp  |  4 ++++
 data/filehandler.h    |  1 +
 formats/csvparser.cpp | 18 ++++++++++++++++++
 formats/csvparser.h   |  1 +
 genericcore.cpp       |  7 +++++++
 genericcore.h         |  1 +
 model/tablemodel.cpp  | 13 +++++++++++++
 model/tablemodel.h    |  1 +
 8 files changed, 46 insertions(+)

diff --git a/data/filehandler.cpp b/data/filehandler.cpp
index dc99a9b..c405e55 100644
--- a/data/filehandler.cpp
+++ b/data/filehandler.cpp
@@ -50,6 +50,10 @@ QList<ModelItemValues> FileHandler::getItemValuesFromCSVFile(const QString& file
   return result;
 }
 
+bool FileHandler::exportToCSVFile(const QList<QStringList>& rows, const QString& filePath) {
+  return CsvParser::exportToCSVFile(rows, filePath);
+}
+
 FileHandler::FileHandler() {}
 
 /** Tries to open the file specified by the file path & returns the content
diff --git a/data/filehandler.h b/data/filehandler.h
index 32ba140..6fd6019 100644
--- a/data/filehandler.h
+++ b/data/filehandler.h
@@ -17,6 +17,7 @@ class FileHandler {
 
   /// CSV
   static QList<ModelItemValues> getItemValuesFromCSVFile(const QString& filePath);
+  static bool exportToCSVFile(const QList<QStringList>& rows, const QString& filePath);
 
  private:
   explicit FileHandler();
diff --git a/formats/csvparser.cpp b/formats/csvparser.cpp
index 1b6c943..365de1d 100644
--- a/formats/csvparser.cpp
+++ b/formats/csvparser.cpp
@@ -21,6 +21,24 @@ QList<ModelItemValues> CsvParser::getItemsFromCSVFile(const QString& fileName) {
   }
 }
 
+bool CsvParser::exportToCSVFile(const QList<QStringList>& rows, const QString& filePath) {
+  Document doc(std::string(), LabelParams(0, -1));
+  const QList<QString> headerNames = GET_HEADER_NAMES();
+  for (int column = 0; column < headerNames.size(); ++column) {
+    doc.SetColumnName(column, headerNames.at(column).toStdString());
+  }
+  for (int row = 0; row < rows.size(); ++row) {
+    QStringList rowValues = rows.at(row);
+    std::vector<std::string> rowValueStrings;
+    for (int column = 0; column < rowValues.size(); ++column) {
+      rowValueStrings.push_back(rowValues.at(column).toStdString());
+    }
+    doc.InsertRow(row, rowValueStrings);
+  }
+  doc.Save(filePath.toStdString());
+  return true;
+}
+
 CsvParser::CsvParser() {}
 
 /** A CSV file is compatible if the following is true:
diff --git a/formats/csvparser.h b/formats/csvparser.h
index 71986c9..7695156 100644
--- a/formats/csvparser.h
+++ b/formats/csvparser.h
@@ -12,6 +12,7 @@ class Document;
 class CsvParser {
  public:
   static QList<ModelItemValues> getItemsFromCSVFile(const QString& fileName);
+  static bool exportToCSVFile(const QList<QStringList>& rows, const QString& filePath);
 
  private:
   explicit CsvParser();
diff --git a/genericcore.cpp b/genericcore.cpp
index b75a225..96f07a3 100644
--- a/genericcore.cpp
+++ b/genericcore.cpp
@@ -121,6 +121,13 @@ void GenericCore::importCSVFile(const QString& filePath) {
   m_mainModel->insertItems(m_mainModel->rowCount(), itemValuesList);
 }
 
+bool GenericCore::exportCSVFile(const QString& filePath) {
+  qInfo() << "exporting items to CSV...";
+  qDebug() << "filePath:" << filePath;
+  const QList<QStringList> itemsAsStringLists = m_mainModel->getItemsAsStringLists();
+  return FileHandler::exportToCSVFile(itemsAsStringLists, filePath);
+}
+
 void GenericCore::setupModels() {
   m_mainModel = make_shared<TableModel>(m_modelUndoStack, this);
   // TODO add QAbstractItemModelTester
diff --git a/genericcore.h b/genericcore.h
index b4a9776..e3c1e5f 100644
--- a/genericcore.h
+++ b/genericcore.h
@@ -27,6 +27,7 @@ class GenericCore : public QObject {
 
   void saveItems();
   void importCSVFile(const QString& filePath);
+  bool exportCSVFile(const QString& filePath);
 
  signals:
   void displayStatusMessage(QString message);
diff --git a/model/tablemodel.cpp b/model/tablemodel.cpp
index 09011c8..4895e9a 100644
--- a/model/tablemodel.cpp
+++ b/model/tablemodel.cpp
@@ -146,6 +146,19 @@ QJsonDocument TableModel::getAllItemsAsJsonDoc() const {
   return doc;
 }
 
+QList<QStringList> TableModel::getItemsAsStringLists() const {
+  QList<QStringList> result;
+  foreach (shared_ptr<ModelItem> item, m_items) {
+    QStringList valueList;
+    for (int column = 0; column < columnCount(); ++column) {
+      QString value = item->data(GET_ROLE_FOR_COLUMN(column)).toString();
+      valueList.append(value);
+    }
+    result.append(valueList);
+  }
+  return result;
+}
+
 bool TableModel::removeRows(int firstRow, int nRows, const QModelIndex& parentIndex) {
   if (parentIndex != QModelIndex()) {
     qWarning() << "Removing of child rows is not supported yet!";
diff --git a/model/tablemodel.h b/model/tablemodel.h
index 0627d13..4bd2dcd 100644
--- a/model/tablemodel.h
+++ b/model/tablemodel.h
@@ -36,6 +36,7 @@ class TableModel : public QAbstractTableModel {
 
   ModelItemValues getItemValues(const QModelIndex& index) const;
   QJsonDocument getAllItemsAsJsonDoc() const;
+  QList<QStringList> getItemsAsStringLists() const;
 
  public slots:
   // bool insertRows(int position, int rows, const QModelIndex& parentIndex = QModelIndex())