1 files changed, 336 insertions, 0 deletions
diff --git a/launcher/minecraft/mod/ResourceFolderModel.cpp b/launcher/minecraft/mod/ResourceFolderModel.cpp
new file mode 100644
index 00000000..4867a8c2
--- /dev/null
+++ b/launcher/minecraft/mod/ResourceFolderModel.cpp
@@ -0,0 +1,336 @@
+#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));
+}