1 files changed, 96 insertions, 11 deletions

diff --git a/src/atomchannel.cpp b/src/atomchannel.cpp
index 95f4f0d..d89d4ef 100644
--- a/src/atomchannel.cpp
+++ b/src/atomchannel.cpp
@@ -79,9 +79,9 @@ AtomChannel::AtomChannel(QXmlStreamReader *xmlReader)
 }
 
 // TODO: move to a separate function, code is almost identical in all methods called `getDbId`
-int AtomChannel::getDbId()
+std::optional<int> AtomChannel::getDbId()
 {
-    if (m_id != rsshit::db::IdNotFound)
+    if (m_id)
         return m_id;
 
     const auto db = rsshit::db::open();
@@ -120,17 +120,23 @@ int AtomChannel::getDbId()
 }
 
 // TODO: move to a separate function, code is almost identical in all methods called `createInDb`
-int AtomChannel::createInDb()
+std::optional<int> AtomChannel::createInDb()
 {
-    if (m_id != rsshit::db::IdNotFound)
+    if (m_id)
         return m_id;
 
     const auto db = rsshit::db::open();
 
-    if (!db)
+    if (!db) {
         return rsshit::db::IdNotFound;
+    }
+
+    QSqlQuery insertQ;
+    if (!insertQ.prepare("insert into feeds(link, title, image_url) values(?, ?, ?)")) {
+        qCritical() << "cannot prepare query:" << insertQ.lastError().text();
 
-    QSqlQuery insertQ{"insert into feeds(link, title, image_url) values(?, ?, ?)"};
+        return rsshit::db::IdNotFound;
+    }
     insertQ.addBindValue(link);
     insertQ.addBindValue(title);
     insertQ.addBindValue(image.url);
@@ -148,7 +154,7 @@ int AtomChannel::createInDb()
 }
 
 // TODO: can be moved to IDbObject
-int AtomChannel::getOrInsertDbId()
+std::optional<int> AtomChannel::getOrInsertDbId()
 {
     const auto id = getDbId();
 
@@ -160,18 +166,19 @@ int AtomChannel::getOrInsertDbId()
 
 QList<int> AtomChannel::syncDbItems()
 {
-    if (m_id == rsshit::db::IdNotFound)
+    if (!m_id)
         m_id = getOrInsertDbId();
 
-    if (m_id == rsshit::db::IdNotFound)
+    if (!m_id)
         return {};
 
     QList<int> result;
+    result.reserve(items.count());
 
     for (auto &item : items) {
-        auto id = item.getOrInsertDbId(this->m_id);
+        auto id = item.getOrInsertDbId(*this->m_id);
 
-        if (id != rsshit::db::IdNotFound)
+        if (id)
             result << id;
     }
 
@@ -199,3 +206,81 @@ QDebug operator<<(QDebug debug, const AtomChannel &channel)
 
     return debug;
 }
+
+QDebug operator<<(QDebug debug, const Channel &channel)
+{
+    QDebugStateSaver saver{debug};
+
+    const auto &mo = Channel::staticMetaObject;
+
+    debug.nospace() << mo.className() << " {" << Qt::endl;
+
+    for (int i = 0; i < mo.propertyCount(); ++i) {
+        auto prop = mo.property(i);
+        debug.nospace() << "\t" << prop.name() << ": " << prop.readOnGadget(&channel) << Qt::endl;
+    }
+
+    debug.nospace() << "}";
+
+    return debug;
+}
+
+QDebug operator<<(QDebug debug, const Item &item)
+{
+    QDebugStateSaver saver{debug};
+
+    const auto &mo = Item::staticMetaObject;
+
+    debug.nospace() << mo.className() << " {" << Qt::endl;
+
+    for (int i = 0; i < mo.propertyCount(); ++i) {
+        auto prop = mo.property(i);
+        debug.nospace() << "\t" << prop.name() << ": " << prop.readOnGadget(&item) << Qt::endl;
+    }
+
+    debug.nospace() << "}";
+
+    return debug;
+}
+
+Channel::Channel(const QDomNode &node)
+    : DbItem{node}
+{
+    init(staticMetaObject, node);
+
+    // use 'atom:link href="LINK"' if any
+    const QString atomLinkTag = QStringLiteral("atom:link");
+    const QString hrefTag = QStringLiteral("href");
+    set_link(node.toElement()
+                 .elementsByTagName(atomLinkTag)
+                 .at(0)
+                 .toElement()
+                 .attribute(hrefTag, get_link().toString()));
+}
+
+bool Channel::isValid() const
+{
+    staticMetaObject;
+    return !m_title.isEmpty() && m_link.isValid();
+}
+
+DbItem::DbItem(const QDomNode &node)
+{
+    init(staticMetaObject, node);
+}
+
+void DbItem::init(const QMetaObject &mo, const QDomNode &node)
+{
+    for (int i = mo.propertyOffset(); i < mo.propertyCount(); ++i) {
+        auto prop = mo.property(i);
+        QVariant variant{node.toElement().elementsByTagName(prop.name()).at(0).toElement().text()};
+        const bool converted = variant.convert(QMetaType{prop.typeId()});
+        prop.writeOnGadget(this, converted ? std::move(variant) : QVariant{});
+    }
+}
+
+Item::Item(const QDomNode &node)
+    : DbItem{node}
+{
+    init(staticMetaObject, node);
+}