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#include "exportmanager.h"
#include "services/pluginmanager.h"
#include "plugins/exportplugin.h"
#include "services/notifymanager.h"
#include "exportworker.h"
#include <QThreadPool>
#include <QTextCodec>
#include <QBuffer>
#include <QDebug>
#include <QDir>
#include <QFile>
ExportManager::ExportManager(QObject *parent) :
PluginServiceBase(parent)
{
}
ExportManager::~ExportManager()
{
safe_delete(config);
}
QStringList ExportManager::getAvailableFormats(ExportMode exportMode) const
{
QStringList formats;
for (ExportPlugin* plugin : PLUGINS->getLoadedPlugins<ExportPlugin>())
{
if (exportMode == UNDEFINED || plugin->getSupportedModes().testFlag(exportMode))
formats << plugin->getFormatName();
}
return formats;
}
void ExportManager::configure(const QString& format, const StandardExportConfig& config)
{
configure(format, new StandardExportConfig(config));
}
void ExportManager::configure(const QString& format, StandardExportConfig* config)
{
if (exportInProgress)
{
qWarning() << "Tried to configure export while another export is in progress.";
return;
}
plugin = getPluginForFormat(format);
if (!plugin)
{
invalidFormat(format);
return;
}
safe_delete(this->config);
this->config = config;
}
bool ExportManager::isExportInProgress() const
{
return exportInProgress;
}
void ExportManager::exportQueryResults(Db* db, const QString& query)
{
if (!checkInitialConditions())
return;
if (!plugin->getSupportedModes().testFlag(QUERY_RESULTS))
{
notifyError(tr("Export plugin %1 doesn't support exporing query results.").arg(plugin->getFormatName()));
emit exportFailed();
emit exportFinished();
return;
}
exportInProgress = true;
mode = QUERY_RESULTS;
ExportWorker* worker = prepareExport();
if (!worker)
return;
worker->prepareExportQueryResults(db, query);
QThreadPool::globalInstance()->start(worker);
}
void ExportManager::exportTable(Db* db, const QString& database, const QString& table)
{
static const QString sql = QStringLiteral("SELECT * FROM %1");
if (!checkInitialConditions())
return;
if (!plugin->getSupportedModes().testFlag(TABLE))
{
notifyError(tr("Export plugin %1 doesn't support exporing tables.").arg(plugin->getFormatName()));
emit exportFailed();
emit exportFinished();
return;
}
exportInProgress = true;
mode = TABLE;
ExportWorker* worker = prepareExport();
if (!worker)
return;
worker->prepareExportTable(db, database, table);
QThreadPool::globalInstance()->start(worker);
}
void ExportManager::exportDatabase(Db* db, const QStringList& objectListToExport)
{
if (!checkInitialConditions())
return;
if (!plugin->getSupportedModes().testFlag(DATABASE))
{
notifyError(tr("Export plugin %1 doesn't support exporing databases.").arg(plugin->getFormatName()));
emit exportFailed();
emit exportFinished();
return;
}
exportInProgress = true;
mode = DATABASE;
ExportWorker* worker = prepareExport();
if (!worker)
return;
worker->prepareExportDatabase(db, objectListToExport);
QThreadPool::globalInstance()->start(worker);
}
void ExportManager::interrupt()
{
emit orderWorkerToInterrupt();
}
ExportPlugin* ExportManager::getPluginForFormat(const QString& formatName) const
{
for (ExportPlugin* plugin : PLUGINS->getLoadedPlugins<ExportPlugin>())
if (plugin->getFormatName() == formatName)
return plugin;
return nullptr;
}
void ExportManager::invalidFormat(const QString& format)
{
notifyError(tr("Export format '%1' is not supported. Supported formats are: %2.").arg(format).arg(getAvailableFormats().join(", ")));
}
bool ExportManager::checkInitialConditions()
{
if (exportInProgress)
{
qWarning() << "Tried to call export while another export is in progress.";
emit exportFailed();
emit exportFinished();
return false;
}
if (!plugin)
{
qWarning() << "Tried to call export while no export plugin was configured.";
emit exportFailed();
emit exportFinished();
return false;
}
return true;
}
ExportWorker* ExportManager::prepareExport()
{
bool usesOutput = plugin->getSupportedModes().testFlag(FILE) || plugin->getSupportedModes().testFlag(CLIPBOARD);
QIODevice* output = nullptr;
if (usesOutput)
{
output = getOutputStream();
if (!output)
{
emit exportFailed();
emit exportFinished();
exportInProgress = false;
return nullptr;
}
}
ExportWorker* worker = new ExportWorker(plugin, config, output);
connect(worker, SIGNAL(finished(bool,QIODevice*)), this, SLOT(finalizeExport(bool,QIODevice*)));
connect(worker, SIGNAL(finishedStep(int)), this, SIGNAL(finishedStep(int)));
connect(this, SIGNAL(orderWorkerToInterrupt()), worker, SLOT(interrupt()));
return worker;
}
void ExportManager::handleClipboardExport()
{
if (plugin->getMimeType().isNull())
{
QString str = codecForName(config->codec)->toUnicode(bufferForClipboard->buffer());
emit storeInClipboard(str);
}
else
emit storeInClipboard(bufferForClipboard->buffer(), plugin->getMimeType());
}
void ExportManager::finalizeExport(bool result, QIODevice* output)
{
if (result)
{
if (config->intoClipboard)
{
notifyInfo(tr("Export to the clipboard was successful."));
handleClipboardExport();
}
else if (!config->outputFileName.isEmpty())
notifyInfo(tr("Export to the file '%1' was successful.").arg(config->outputFileName));
else
notifyInfo(tr("Export was successful."));
emit exportSuccessful();
}
else
{
emit exportFailed();
}
emit exportFinished();
if (output)
{
output->close();
delete output;
}
bufferForClipboard = nullptr;
exportInProgress = false;
}
QIODevice* ExportManager::getOutputStream()
{
QFile::OpenMode openMode;
if (config->intoClipboard)
{
openMode = QIODevice::WriteOnly;
if (!plugin->isBinaryData())
openMode |= QIODevice::Text;
bufferForClipboard = new QBuffer();
bufferForClipboard->open(openMode);
return bufferForClipboard;
}
else if (!config->outputFileName.trimmed().isEmpty())
{
openMode = QIODevice::WriteOnly|QIODevice::Truncate;
if (!plugin->isBinaryData())
openMode |= QIODevice::Text;
QFile* file = new QFile(config->outputFileName);
if (!file->open(openMode))
{
notifyError(tr("Could not export to file %1. File cannot be open for writting.").arg(config->outputFileName));
delete file;
return nullptr;
}
return file;
}
else
{
qCritical() << "ExportManager::getOutputStream(): neither clipboard or output file was specified";
}
return nullptr;
}
bool ExportManager::isAnyPluginAvailable()
{
return !PLUGINS->getLoadedPlugins<ExportPlugin>().isEmpty();
}
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