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#pragma once
#include <optional>
#include <QDateTime>
#include <QDebug>
#include <QDomDocument>
#include <QList>
#include <QString>
#include <QUrl>
#include "atomchannelimage.h"
#include "atomitem.h"
class QXmlStreamReader;
// TODO: mark items as read in all user channels
#define GADGET_PROPERTY(type, name) \
protected: \
Q_PROPERTY(const type name READ get_##name WRITE set_##name) \
public: \
const type &get_##name() const \
{ \
return m_##name; \
} \
void set_##name(const type &name) \
{ \
m_##name = name; \
} \
\
protected: \
type m_##name
class DbItem : public QObject
{
// Q_GADGET
Q_OBJECT
public:
using DbId = std::optional<qlonglong>;
GADGET_PROPERTY(DbId, id);
static constexpr auto dateFormat = Qt::DateFormat::RFC2822Date;
public:
explicit DbItem(const QDomNode &node);
public:
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 Feed : public DbItem
{
Q_OBJECT
GADGET_PROPERTY(QString, title);
GADGET_PROPERTY(QUrl, link);
GADGET_PROPERTY(QUrl, image_url);
public:
explicit Feed(const QDomNode &node);
public:
bool isValid() const override;
const QStringList &uniqueFields() const override;
private:
static inline QStringList m_uniqueFields{{"link"}};
};
// TODO: <image>
class Item : public DbItem
{
Q_OBJECT
GADGET_PROPERTY(QString, title);
GADGET_PROPERTY(QUrl, link);
GADGET_PROPERTY(QStringList, category);
GADGET_PROPERTY(QString, guid);
GADGET_PROPERTY(QDateTime, pubDate);
GADGET_PROPERTY(QString, description);
GADGET_PROPERTY(QString, content);
public:
explicit Item(const QDomNode &node);
public:
bool isValid() const override;
const QStringList &uniqueFields() const override;
private:
static inline QStringList m_uniqueFields{{"link"}};
};
class AtomChannel
{
public:
// TODO: move to interface
static inline const QString xmlTag{"channel"};
public:
explicit AtomChannel(QXmlStreamReader *xmlReader);
public:
// TODO: update db data if differs. here and everywhere (item, user, etc)
/*!
* \brief getDbId - check if channel with corresponding `link` exists in db
* and return db id if any
* \return id on success, 0 otherwise
*/
std::optional<int> getDbId();
/*!
* \brief createInDb - create channel in db
* \return new channel id on success, 0 otherwise
*/
std::optional<int> createInDb();
/*!
* \brief getOrInsertDbId - get existing channel id or try to create a new
* channel and get its id
* \return existing or new channel id on success, 0 otherwise
*/
std::optional<int> getOrInsertDbId();
/*!
* \brief syncDbItems - create items in db if not exist
* \return list of new items ids
*/
QList<int> syncDbItems();
public:
/*!
* \brief m_id - cache db m_id
*/
std::optional<int> m_id{0};
QString title;
/*!
* \brief link - field called `link` in atom xml. Points to feed itself
*/
QUrl link;
QString description;
QDateTime lastBuildDate;
QLocale::Language language;
// ...
// TODO: shared_ptr
AtomChannelImage image;
QList<AtomItem> items;
};
QDebug operator<<(QDebug debug, const AtomChannel &channel);
QDebug operator<<(QDebug debug, const Feed &feed);
QDebug operator<<(QDebug debug, const Item &item);
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