pollymc/launcher/minecraft/mod/ResourceFolderModel.cpp

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#include "ResourceFolderModel.h"
#include <QDebug>
#include <QMimeData>
#include <QThreadPool>
#include <QUrl>
#include "FileSystem.h"
#include "minecraft/mod/tasks/BasicFolderLoadTask.h"
#include "tasks/Task.h"
ResourceFolderModel::ResourceFolderModel(QDir dir, QObject* parent) : QAbstractListModel(parent), m_dir(dir), m_watcher(this)
{
m_dir.setFilter(QDir::Readable | QDir::NoDotAndDotDot | QDir::Files | QDir::Dirs);
m_dir.setSorting(QDir::Name | QDir::IgnoreCase | QDir::LocaleAware);
connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &ResourceFolderModel::directoryChanged);
}
bool ResourceFolderModel::startWatching(const QStringList paths)
{
if (m_is_watching)
return false;
update();
auto couldnt_be_watched = m_watcher.addPaths(paths);
for (auto path : paths) {
if (couldnt_be_watched.contains(path))
qDebug() << "Failed to start watching " << path;
else
qDebug() << "Started watching " << path;
}
m_is_watching = !m_is_watching;
return m_is_watching;
}
bool ResourceFolderModel::stopWatching(const QStringList paths)
{
if (!m_is_watching)
return false;
auto couldnt_be_stopped = m_watcher.removePaths(paths);
for (auto path : paths) {
if (couldnt_be_stopped.contains(path))
qDebug() << "Failed to stop watching " << path;
else
qDebug() << "Stopped watching " << path;
}
m_is_watching = !m_is_watching;
return !m_is_watching;
}
bool ResourceFolderModel::installResource(QString original_path)
{
if (!m_can_interact) {
return false;
}
// NOTE: fix for GH-1178: remove trailing slash to avoid issues with using the empty result of QFileInfo::fileName
original_path = FS::NormalizePath(original_path);
QFileInfo file_info(original_path);
if (!file_info.exists() || !file_info.isReadable()) {
qWarning() << "Caught attempt to install non-existing file or file-like object:" << original_path;
return false;
}
qDebug() << "Installing: " << file_info.absoluteFilePath();
Resource resource(file_info);
if (!resource.valid()) {
qWarning() << original_path << "is not a valid resource. Ignoring it.";
return false;
}
auto new_path = FS::NormalizePath(m_dir.filePath(file_info.fileName()));
if (original_path == new_path) {
qWarning() << "Overwriting the mod (" << original_path << ") with itself makes no sense...";
return false;
}
switch (resource.type()) {
case ResourceType::SINGLEFILE:
case ResourceType::ZIPFILE:
case ResourceType::LITEMOD: {
if (QFile::exists(new_path) || QFile::exists(new_path + QString(".disabled"))) {
if (!QFile::remove(new_path)) {
qCritical() << "Cleaning up new location (" << new_path << ") was unsuccessful!";
return false;
}
qDebug() << new_path << "has been deleted.";
}
if (!QFile::copy(original_path, new_path)) {
qCritical() << "Copy from" << original_path << "to" << new_path << "has failed.";
return false;
}
FS::updateTimestamp(new_path);
QFileInfo new_path_file_info(new_path);
resource.setFile(new_path_file_info);
update();
return true;
}
case ResourceType::FOLDER: {
if (QFile::exists(new_path)) {
qDebug() << "Ignoring folder '" << original_path << "', it would merge with" << new_path;
return false;
}
if (!FS::copy(original_path, new_path)()) {
qWarning() << "Copy of folder from" << original_path << "to" << new_path << "has (potentially partially) failed.";
return false;
}
QFileInfo newpathInfo(new_path);
resource.setFile(newpathInfo);
update();
return true;
}
default:
break;
}
return false;
}
bool ResourceFolderModel::uninstallResource(QString file_name)
{
for (auto resource : m_resources) {
if (resource->fileinfo().fileName() == file_name)
return resource->destroy();
}
return false;
}
bool ResourceFolderModel::deleteResources(const QModelIndexList& indexes)
{
if (!m_can_interact)
return false;
if (indexes.isEmpty())
return true;
for (auto i : indexes) {
if (i.column() != 0) {
continue;
}
auto resource = m_resources.at(i.row());
resource->destroy();
}
return true;
}
bool ResourceFolderModel::update()
{
// Already updating, so we schedule a future update and return.
if (m_current_update_task) {
m_scheduled_update = true;
return false;
}
m_current_update_task.reset(createUpdateTask());
connect(m_current_update_task.get(), &Task::succeeded, this, &ResourceFolderModel::onUpdateSucceeded, Qt::ConnectionType::QueuedConnection);
connect(m_current_update_task.get(), &Task::failed, this, &ResourceFolderModel::onUpdateFailed, Qt::ConnectionType::QueuedConnection);
auto* thread_pool = QThreadPool::globalInstance();
thread_pool->start(m_current_update_task.get());
return true;
}
void ResourceFolderModel::resolveResource(Resource::Ptr res)
{
if (!res->shouldResolve()) {
return;
}
auto task = createParseTask(*res);
m_ticket_mutex.lock();
int ticket = m_next_resolution_ticket;
m_next_resolution_ticket += 1;
m_ticket_mutex.unlock();
res->setResolving(true, ticket);
m_active_parse_tasks.insert(ticket, task);
connect(task, &Task::succeeded, this, [=] { onParseSucceeded(ticket, res->internal_id()); }, Qt::ConnectionType::QueuedConnection);
connect(task, &Task::failed, this, [=] { onParseFailed(ticket, res->internal_id()); }, Qt::ConnectionType::QueuedConnection);
auto* thread_pool = QThreadPool::globalInstance();
thread_pool->start(task);
}
void ResourceFolderModel::onUpdateSucceeded()
{
auto update_results = static_cast<BasicFolderLoadTask*>(m_current_update_task.get())->result();
auto& new_resources = update_results->resources;
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
auto current_list = m_resources_index.keys();
QSet<QString> current_set(current_list.begin(), current_list.end());
auto new_list = new_resources.keys();
QSet<QString> new_set(new_list.begin(), new_list.end());
#else
QSet<QString> current_set(m_resources_index.keys().toSet());
QSet<QString> new_set(new_resources.keys().toSet());
#endif
applyUpdates(current_set, new_set, new_resources);
update_results.reset();
m_current_update_task->deleteLater();
m_current_update_task.reset();
emit updateFinished();
if (m_scheduled_update) {
m_scheduled_update = false;
update();
}
}
void ResourceFolderModel::onParseSucceeded(int ticket, QString resource_id)
{
auto iter = m_active_parse_tasks.constFind(ticket);
if (iter == m_active_parse_tasks.constEnd())
return;
(*iter)->deleteLater();
m_active_parse_tasks.remove(ticket);
int row = m_resources_index[resource_id];
emit dataChanged(index(row), index(row, columnCount(QModelIndex()) - 1));
}
Task* ResourceFolderModel::createUpdateTask()
{
return new BasicFolderLoadTask(m_dir);
}
void ResourceFolderModel::directoryChanged(QString path)
{
update();
}
Qt::DropActions ResourceFolderModel::supportedDropActions() const
{
// copy from outside, move from within and other resource lists
return Qt::CopyAction | Qt::MoveAction;
}
Qt::ItemFlags ResourceFolderModel::flags(const QModelIndex& index) const
{
Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);
auto flags = defaultFlags;
if (!m_can_interact) {
flags &= ~Qt::ItemIsDropEnabled;
} else {
flags |= Qt::ItemIsDropEnabled;
if (index.isValid()) {
flags |= Qt::ItemIsUserCheckable;
}
}
return flags;
}
QStringList ResourceFolderModel::mimeTypes() const
{
QStringList types;
types << "text/uri-list";
return types;
}
bool ResourceFolderModel::dropMimeData(const QMimeData* data, Qt::DropAction action, int, int, const QModelIndex&)
{
if (action == Qt::IgnoreAction) {
return true;
}
// check if the action is supported
if (!data || !(action & supportedDropActions())) {
return false;
}
// files dropped from outside?
if (data->hasUrls()) {
auto urls = data->urls();
for (auto url : urls) {
// only local files may be dropped...
if (!url.isLocalFile()) {
continue;
}
// TODO: implement not only copy, but also move
// FIXME: handle errors here
installResource(url.toLocalFile());
}
return true;
}
return false;
}
bool ResourceFolderModel::validateIndex(const QModelIndex& index) const
{
if (!index.isValid())
return false;
size_t row = index.row();
if (row < 0 || row >= size())
return false;
return true;
}
void ResourceFolderModel::enableInteraction(bool enabled)
{
if (m_can_interact == enabled)
return;
m_can_interact = enabled;
if (size())
emit dataChanged(index(0), index(size() - 1));
}