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/*
* Copyright (C) 2007 Tobias Koenig <tokoe@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "cachedprovider.h"
#include <QDir>
#include <QFile>
#include <QSettings>
#include <QTimer>
#include <QImage>
#include <QDebug>
#include <QUrl>
#include <QStandardPaths>
const int CachedProvider::CACHE_DEFAULT = 20;
static QString identifierToPath(const QString &identifier)
{
const QString dataDir = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + QLatin1String("/plasma_engine_comic/");
return dataDir + QString::fromLatin1(QUrl::toPercentEncoding(identifier));
}
CachedProvider::CachedProvider(QObject *parent, const QVariantList &args)
: ComicProvider(parent, args)
{
QTimer::singleShot(0, this, SLOT(triggerFinished()));
}
CachedProvider::~CachedProvider()
{
}
ComicProvider::IdentifierType CachedProvider::identifierType() const
{
return StringIdentifier;
}
QImage CachedProvider::image() const
{
if (!QFile::exists(identifierToPath(requestedString())))
return QImage();
QImage img;
img.load(identifierToPath(requestedString()), "PNG");
return img;
}
QString CachedProvider::identifier() const
{
return requestedString();
}
QString CachedProvider::nextIdentifier() const
{
QSettings settings(identifierToPath(requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("nextIdentifier"), QString()).toString();
}
QString CachedProvider::previousIdentifier() const
{
QSettings settings(identifierToPath(requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("previousIdentifier"), QString()).toString();
}
QString CachedProvider::firstStripIdentifier() const
{
QSettings settings(identifierToPath(requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("firstStripIdentifier"), QString()).toString();
}
QString CachedProvider::lastCachedStripIdentifier() const
{
QSettings settings(identifierToPath(requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("lastCachedStripIdentifier"), QString()).toString();
}
QString CachedProvider::comicAuthor() const
{
QSettings settings(identifierToPath(requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("comicAuthor"), QString()).toString();
}
QString CachedProvider::stripTitle() const
{
QSettings settings(identifierToPath (requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("stripTitle"), QString()).toString();
}
QString CachedProvider::additionalText() const
{
QSettings settings(identifierToPath (requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("additionalText"), QString()).toString();
}
QString CachedProvider::suffixType() const
{
QSettings settings(identifierToPath (requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("suffixType"), QString()).toString();
}
QString CachedProvider::name() const
{
QSettings settings(identifierToPath (requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("title"), QString()).toString();
}
void CachedProvider::triggerFinished()
{
emit finished(this);
}
bool CachedProvider::isCached(const QString &identifier)
{
return QFile::exists(identifierToPath(identifier));
}
bool CachedProvider::storeInCache(const QString &identifier, const QImage &comic, const Settings &info)
{
const QString path = identifierToPath(identifier);
int index = identifier.indexOf(QLatin1Char(':'));
const QString comicName = identifier.mid(0, index);
const QString pathMain = identifierToPath(comicName);
const QString dirPath = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + QLatin1String("/plasma_engine_comic/") ;
if (!info.isEmpty()) {
QSettings settings(path + QLatin1String(".conf"), QSettings::IniFormat);
QSettings settingsMain(pathMain + QLatin1String(".conf"), QSettings::IniFormat);
for (Settings::const_iterator i = info.constBegin(); i != info.constEnd(); ++i) {
if ((i.key() == QLatin1String("firstStripIdentifier")) || (i.key() == QLatin1String("title")) ||
(i.key() == QLatin1String("lastCachedStripIdentifier")) || (i.key() == QLatin1String("suffixType")) ||
(i.key() == QLatin1String("shopUrl")) || (i.key() == QLatin1String("isLeftToRight")) ||
(i.key() == QLatin1String("isTopToBottom"))) {
settingsMain.setValue(i.key(), i.value());
} else {
settings.setValue(i.key(), i.value());
}
}
QStringList comics;
if (settingsMain.contains(QLatin1String("comics"))) {
comics = settingsMain.value(QLatin1String("comics"), QStringList()).toStringList();
} else {
//existing strips haven't been stored in the conf-file yet, do that now, oldest first, newest last
QDir dir(dirPath);
comics = dir.entryList(QStringList() << QString::fromLatin1(QUrl::toPercentEncoding(comicName + QLatin1Char(':'))) + QLatin1Char('*'), QDir::Files, QDir::Time | QDir::Reversed);
QStringList::iterator it = comics.begin();
while (it != comics.end()) {
//only count images, not the conf files
if ((*it).endsWith(QLatin1String(".conf"))) {
it = comics.erase(it);
} else {
++it;
}
}
}
comics.append(QString::fromLatin1(QUrl::toPercentEncoding(identifier)));
const int limit = CachedProvider::maxComicLimit();
//limit is on
if (limit > 0) {
qDebug() << QLatin1String("MaxComicLimit on.");
int comicsToRemove = comics.count() - limit;
QStringList::iterator it = comics.begin();
while (comicsToRemove > 0 && it != comics.end()) {
qDebug() << QLatin1String("Remove file") << (dirPath + (*it));
QFile::remove(dirPath + (*it));
QFile::remove(dirPath + (*it) + QLatin1String(".conf"));
it = comics.erase(it);
-- comicsToRemove;
}
}
settingsMain.setValue(QLatin1String("comics"), comics);
}
return comic.save(path, "PNG");
}
QUrl CachedProvider::websiteUrl() const
{
QSettings settings(identifierToPath(requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return QUrl(settings.value(QLatin1String("websiteUrl")).toUrl());
}
QUrl CachedProvider::imageUrl() const
{
QSettings settings(identifierToPath(requestedString()) + QLatin1String(".conf"), QSettings::IniFormat);
return QUrl(settings.value(QLatin1String("imageUrl")).toUrl());
}
QUrl CachedProvider::shopUrl() const
{
QSettings settings(identifierToPath(requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return QUrl(settings.value(QLatin1String("shopUrl")).toUrl());
}
bool CachedProvider::isLeftToRight() const
{
QSettings settings(identifierToPath(requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("isLeftToRight"), true).toBool();
}
bool CachedProvider::isTopToBottom() const
{
QSettings settings(identifierToPath(requestedComicName()) + QLatin1String(".conf"), QSettings::IniFormat);
return settings.value(QLatin1String("isTopToBottom"), true).toBool();
}
int CachedProvider::maxComicLimit()
{
QSettings settings(identifierToPath(QLatin1String("comic_settings.conf")), QSettings::IniFormat);
return qMax(settings.value(QLatin1String("maxComics"), CACHE_DEFAULT).toInt(), 0);//old value was -1, thus use qMax
}
void CachedProvider::setMaxComicLimit(int limit)
{
if (limit < 0) {
qDebug() << "Wrong limit, setting to default.";
limit = CACHE_DEFAULT;
}
QSettings settings(identifierToPath(QLatin1String("comic_settings.conf")), QSettings::IniFormat);
settings.setValue(QLatin1String("maxComics"), limit);
}
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