Add folder support

src/models/folder.cpp

@@ -0,0 +1,83 @@
+#include "folder.h"
+
+Folder::Folder(QString name)
+{
+    QUuid uid = QUuid::createUuid();
+    this->uuid = uid.toString(QUuid::StringFormat::WithoutBraces);
+    this->name = name;
+}
+
+Folder::Folder(QJsonObject obj)
+{
+    QUuid uid = QUuid::createUuid();
+    QString newUuid = uid.toString(QUuid::StringFormat::WithoutBraces);
+
+    this->uuid = obj["uuid"].toString(newUuid);
+    this->name = obj["name"].toString("<unamed folder>");
+    foreach (QJsonValue value, obj["notes"].toArray()) {
+        this->notes.append(new Note(value.toObject()));
+    }
+}
+
+Folder::~Folder()
+{
+    foreach (Note *n, notes)
+    {
+        delete n;
+    }
+}
+
+QString Folder::getName()
+{
+    return name;
+}
+
+void Folder::setName(QString name)
+{
+    this->name = name;
+}
+
+QString Folder::getUUID()
+{
+    return uuid;
+}
+
+QVector<Note *> Folder::getNotes()
+{
+    return notes;
+}
+
+void Folder::append(Note *n)
+{
+    notes.append(n);
+}
+
+int Folder::remove(QString uuid)
+{
+    int res = 0;
+    int idx = -1;
+    for (int i = 0; i < notes.length(); i++)
+    {
+        if (notes[i]->getUUID() == uuid)
+        {
+            idx = i;
+            res = 1;
+        }
+    }
+    notes.removeAt(idx);
+    return res;
+}
+
+QJsonObject Folder::toJson()
+{
+    QJsonObject folder;
+    QJsonArray arr;
+    foreach (Note *n, notes) {
+        arr.append(n->toJson());
+    }
+    folder["name"] = this->name;
+    folder["uuid"] = this->uuid;
+    folder["notes"] = arr;
+    return folder;
+}
+