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#include "atomchannel.h"
#include <QSqlError>
#include <QSqlQuery>
#include <QXmlStreamReader>
#include "constants.h"
#include "macros.h"
#include "rsshit_db.h"
AtomChannel::AtomChannel(QXmlStreamReader *xmlReader)
{
Q_ASSERT(xmlReader != nullptr);
const QString titleTag{"title"};
const QString linkTag{"link"};
const QString descriptionTag{"description"};
const QString lastBuildDateTag{"lastBuildDate"};
const QString languageTag{"language"};
while (!xmlReader->atEnd() && !xmlReader->hasError()) {
const auto itemNext = xmlReader->readNext();
switch (itemNext) {
case QXmlStreamReader::TokenType::StartElement: {
const auto name = xmlReader->name();
// qDebug() << __func__ << ": StartElement" << name;
// qDebug() << __func__ << "namespaceUri:" << xmlReader->namespaceUri();
// qDebug() << __func__ << "prefix:" << xmlReader->prefix();
// qDebug() << __func__ << "qualifiedName:" << xmlReader->qualifiedName();
// const auto elementText = xmlReader->readElementText();
if (name == titleTag)
title = xmlReader->readElementText();
else if (name == linkTag)
link = xmlReader->readElementText();
else if (name == descriptionTag)
description = xmlReader->readElementText();
else if (name == lastBuildDateTag)
lastBuildDate = QDateTime::fromString(xmlReader->readElementText(),
Qt::DateFormat::RFC2822Date);
else if (name == languageTag)
language = QLocale{xmlReader->readElementText()}.language();
else if (name == AtomChannelImage::tag) {
// qDebug() << "got image tag";
image = AtomChannelImage{xmlReader};
// qDebug() << image;
} else if (name == AtomItem::tag) {
items << AtomItem{xmlReader};
// qDebug() << items.constLast();
// qDebug() << __func__ << "got feed item";
} else {
// qDebug() << "exit" << __func__;
// qDebug() << __func__ << "unknown tag:" << name;
continue;
}
break;
}
case QXmlStreamReader::TokenType::EndElement: {
// qDebug() << "EndElement: " << xmlReader->name();
if (xmlReader->name() == AtomChannel::xmlTag)
return;
}
case QXmlStreamReader::TokenType::Characters: {
const auto characters = xmlReader->text().toString().simplified();
if (characters.isEmpty())
break;
qDebug() << "channel: characters: " << characters;
break;
}
}
}
qDebug() << "exit " << __func__;
}
// TODO: move to a separate function, code is almost identical in all methods called `getDbId`
int AtomChannel::getDbId()
{
if (m_id != rsshit::db::IdNotFound)
return m_id;
const auto db = rsshit::db::open();
if (!db)
return rsshit::db::IdNotFound;
QSqlQuery selectQ{"select id from feeds where link=?"};
selectQ.addBindValue(link);
if (!selectQ.exec()) {
qWarning() << "cannot exec query" << selectQ.lastQuery() << ":"
<< selectQ.lastError().text();
return rsshit::db::IdNotFound;
}
if (!selectQ.next())
return rsshit::db::IdNotFound;
const auto idVariant = selectQ.value(rsshit::db::idTag);
if (!idVariant.isValid() || !idVariant.canConvert<int>())
return rsshit::db::IdNotFound;
bool ok{false};
const auto result = idVariant.toInt(&ok);
if (!ok) {
qWarning() << "got invalid id from db:" << idVariant;
return rsshit::db::IdNotFound;
}
return result;
}
// TODO: move to a separate function, code is almost identical in all methods called `createInDb`
int AtomChannel::createInDb()
{
if (m_id != rsshit::db::IdNotFound)
return m_id;
const auto db = rsshit::db::open();
if (!db)
return rsshit::db::IdNotFound;
QSqlQuery insertQ{"insert into feeds(link, title, image_url) values(?, ?, ?)"};
insertQ.addBindValue(link);
insertQ.addBindValue(title);
insertQ.addBindValue(image.url);
if (!insertQ.exec()) {
qWarning() << "cannot exec query" << insertQ.lastQuery() << ":"
<< insertQ.lastError().text();
return rsshit::db::IdNotFound;
}
m_id = insertQ.lastInsertId().toInt();
return m_id;
}
// TODO: can be moved to IDbObject
int AtomChannel::getOrInsertDbId()
{
const auto id = getDbId();
if (id != rsshit::db::IdNotFound)
return id;
return createInDb();
}
QList<int> AtomChannel::syncDbItems()
{
if (m_id == rsshit::db::IdNotFound)
m_id = getOrInsertDbId();
if (m_id == rsshit::db::IdNotFound)
return {};
QList<int> result;
for (auto &item : items) {
auto id = item.getOrInsertDbId(this->m_id);
if (id != rsshit::db::IdNotFound)
result << id;
}
return result;
}
QDebug operator<<(QDebug debug, const AtomChannel &channel)
{
QDebugStateSaver saver{debug};
debug.nospace() << typeid(AtomChannel).name() << " {" << Qt::endl;
PRINT_ATOM_FIELD(channel, title);
PRINT_ATOM_FIELD(channel, link);
PRINT_ATOM_FIELD(channel, description);
PRINT_ATOM_FIELD(channel, lastBuildDate);
PRINT_ATOM_FIELD(channel, language);
debug << "\timage:\n" << channel.image << Qt::endl;
debug << "\titems count:" << channel.items.size() << Qt::endl;
for (const auto &item : channel.items)
debug << item << Qt::endl;
debug.nospace() << "}";
return debug;
}
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