Basic JSON RESTful client fetching items from a local server at application start and adding them to the model.

genericcore.cpp

@@ -16,6 +16,7 @@
 #include "model/generalsortfiltermodel.h"
 #include "model/metadata.h"
 #include "model/tablemodel.h"
+#include "network/servercommunicator.h"
 
 #include <QtGui/QUndoStack>
 
@@ -37,6 +38,7 @@ GenericCore::GenericCore() {
   m_modelUndoStack = new QUndoStack(this);
 
   setupModels();
+  setupServerConfiguration();
 }
 
 GenericCore::~GenericCore() { qDebug() << "Destroying core..."; }
@@ -132,6 +134,32 @@ bool GenericCore::exportCSVFile(const QString& filePath) {
   return FileHandler::exportToCSVFile(itemsAsStringLists, filePath);
 }
 
+bool GenericCore::isSyncServerSetup() const {
+  if (m_serverCommunicator) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+void GenericCore::onItemsFetched(const QByteArray jsonDoc) {
+  emit displayStatusMessage("New items fetched.");
+  // TODO ? check compability of JSON structure beforehand?
+  m_mainModel->appendItems(jsonDoc);
+}
+
+void GenericCore::onItemsFetchFailure(const QString errorString) {
+  emit displayStatusMessage(QString("Error: %1").arg(errorString));
+}
+
+void GenericCore::onPostRequestSuccessful(const QString message) {
+  emit displayStatusMessage(message);
+}
+
+void GenericCore::onPostRequestFailure(const QString errorString) {
+  emit displayStatusMessage(QString("Error: %1").arg(errorString));
+}
+
 void GenericCore::setupModels() {
   m_mainModel       = make_shared<TableModel>(m_modelUndoStack, this);
   m_sortFilterModel = make_shared<GeneralSortFilterModel>(m_mainModel);
@@ -188,3 +216,19 @@ QString GenericCore::getMaintenanceToolFilePath() const {
   const QString filePath = applicationDirPath + "/" + UPDATER_EXE;
   return filePath;
 }
+
+void GenericCore::setupServerConfiguration() {
+  m_serverCommunicator = make_unique<ServerCommunicator>(this);
+
+  connect(m_serverCommunicator.get(), &ServerCommunicator::itemsFetched, this,
+          &GenericCore::onItemsFetched);
+  connect(m_serverCommunicator.get(), &ServerCommunicator::itemsFetchFailure, this,
+          &GenericCore::onItemsFetchFailure);
+  connect(m_serverCommunicator.get(), &ServerCommunicator::postRequestSuccessful, this,
+          &GenericCore::onPostRequestSuccessful);
+  connect(m_serverCommunicator.get(), &ServerCommunicator::postRequestFailure, this,
+          &GenericCore::onPostRequestFailure);
+
+  /// fetching items on startup to test the communication with the server
+  m_serverCommunicator->fetchItems();
+}