1 files changed, 35 insertions, 11 deletions
diff --git a/src/atomchannel.h b/src/atomchannel.h
index e52048a..e88c05f 100644
--- a/src/atomchannel.h
+++ b/src/atomchannel.h
@@ -32,11 +32,14 @@ public: \
 protected: \
     type m_##name
 
-class DbItem
+class DbItem : public QObject
 {
-    Q_GADGET
+    // Q_GADGET
+    Q_OBJECT
 
-    GADGET_PROPERTY(std::optional<qlonglong>, id);
+public:
+    using DbId = std::optional<qlonglong>;
+    GADGET_PROPERTY(DbId, id);
 
     static constexpr auto dateFormat = Qt::DateFormat::RFC2822Date;
 
@@ -44,28 +47,44 @@ public:
     explicit DbItem(const QDomNode &node);
 
 public:
-    void init(const QMetaObject &mo, const QDomNode &node);
+    virtual bool isValid() const = 0;
+
+    virtual void init(const QDomNode &node);
+
+    // TODO: sync list of items, thus minimizing amount of db queries
+    virtual DbId syncWithDb();
+
+    virtual QStringList propertyNames() const;
+    virtual QList<QMetaProperty> properties() const;
+
+    virtual const QStringList &uniqueFields() const = 0;
 };
 
-class Channel : public DbItem
+class Feed : public DbItem
 {
-    Q_GADGET
+    Q_OBJECT
 
     GADGET_PROPERTY(QString, title);
     GADGET_PROPERTY(QUrl, link);
+    GADGET_PROPERTY(QUrl, image_url);
 
 public:
-    explicit Channel(const QDomNode &node);
+    explicit Feed(const QDomNode &node);
 
 public:
-    bool isValid() const;
+    bool isValid() const override;
+
+    const QStringList &uniqueFields() const override;
+
+private:
+    static inline QStringList m_uniqueFields{{"link"}};
 };
 
 // TODO: <image>
 
 class Item : public DbItem
 {
-    Q_GADGET
+    Q_OBJECT
 
     GADGET_PROPERTY(QString, title);
     GADGET_PROPERTY(QUrl, link);
@@ -79,7 +98,12 @@ public:
     explicit Item(const QDomNode &node);
 
 public:
-    bool isValid() const;
+    bool isValid() const override;
+
+    const QStringList &uniqueFields() const override;
+
+private:
+    static inline QStringList m_uniqueFields{{"link"}};
 };
 
 class AtomChannel
@@ -140,5 +164,5 @@ public:
 };
 
 QDebug operator<<(QDebug debug, const AtomChannel &channel);
-QDebug operator<<(QDebug debug, const Channel &channel);
+QDebug operator<<(QDebug debug, const Feed &feed);
 QDebug operator<<(QDebug debug, const Item &item);