Renamed core subproject into BeetRoundCore.

libs/BeetRoundCore/data/filehandler.cpp

@@ -0,0 +1,89 @@
+#include "filehandler.h"
+
+#include <QDebug>
+#include <QDir>
+#include <QJsonDocument>
+#include <QStandardPaths>
+
+#include "../formats/csvparser.h"
+
+bool FileHandler::saveToFile(const QJsonDocument& doc, const QString& fileName) {
+  qDebug() << "saving file...";
+  QString path = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation).at(0);
+  qDebug() << path;
+
+  QDir dir;
+  if (!dir.exists(path)) {
+    dir.mkpath(path);
+  }
+  //  qDebug() << path + fileName;
+  const QString filePath = path + '/' + fileName;
+  QFile file(filePath);
+
+  if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
+    qWarning() << "can't open file";
+    return false;
+  }
+  QTextStream out(&file);
+  out.setEncoding(QStringConverter::Utf8);
+  out << doc.toJson(QJsonDocument::Indented);
+  return true;
+}
+
+QByteArray FileHandler::loadJSONDataFromFile(const QString fileName) {
+  QFile file;
+  QString path = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation).at(0);
+  file.setFileName(path + "/" + fileName);
+
+  QPair<QString, QByteArray> fileContent = getFileContent(path + "/" + fileName);
+
+  return fileContent.second;
+}
+
+QList<ModelItemValues> FileHandler::getItemValuesFromCSVFile(const QString& filePath) {
+  QList<ModelItemValues> result;
+  QFile file;
+  file.setFileName(filePath);
+  if (file.exists()) {
+    result = CsvParser::getItemsFromCSVFile(filePath);
+  }
+  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
+ * @brief FileHandler::getFileContent
+ * @param filePath
+ * @return Returns an error string (empty if successful) and the file content
+ */
+QPair<QString, QByteArray> FileHandler::getFileContent(const QString& filePath) {
+  QString errorString = "";
+
+  QByteArray fileContent;
+  QFile file;
+  file.setFileName(filePath);
+  if (file.exists()) {
+    qDebug() << "File found, reading content...";
+    const bool successfulOpened = file.open(QIODevice::ReadOnly | QIODevice::Text);
+    if (successfulOpened) {
+      // TODO learn and decide on the differences between "readAll" and using
+      // streams
+      fileContent = file.readAll();
+      file.close();
+    } else {
+      errorString = "File could not be opened!";
+      qWarning() << errorString;
+    }
+  } else {
+    errorString = "File not found. Returning empty result...";
+    qInfo() << errorString;
+  }
+
+  const QPair<QString, QByteArray> result(errorString, fileContent);
+  return result;
+}