Cockatrice/cockatrice/src/interface/widgets/tabs/tab_deck_storage.cpp

#include "tab_deck_storage.h"

#include "../../../client/settings/cache_settings.h"
#include "../../deck_loader/deck_loader.h"
#include "../../theme_icon.h"
#include "../cards/additional_info/deck_color_identity.h"
#include "../deck_share/deck_share_utils.h"
#include "../deck_share/share_bar_widget.h"
#include "../interface/widgets/server/remote/remote_decklist_tree_widget.h"
#include "../interface/widgets/utility/get_text_with_max.h"
#include "abstract_client.h"
#include "libcockatrice/protocol/pb/commands.pb.h"
#include "libcockatrice/protocol/pb/serverinfo_user.pb.h"
#include "libcockatrice/protocol/pb/session_commands.pb.h"

#include <QAbstractItemModel>
#include <QAbstractItemView>
#include <QAction>
#include <QApplication>
#include <QDebug>
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QFileSystemModel>
#include <QGridLayout>
#include <QGroupBox>
#include <QHBoxLayout>
#include <QHeaderView>
#include <QInputDialog>
#include <QItemSelection>
#include <QItemSelectionModel>
#include <QLineEdit>
#include <QMessageBox>
#include <QModelIndex>
#include <QModelIndexList>
#include <QPixmap>
#include <QSharedPointer>
#include <QSize>
#include <QSizePolicy>
#include <QStringLiteral>
#include <QStyle>
#include <QTimer>
#include <QToolBar>
#include <QTreeView>
#include <QVBoxLayout>
#include <QWidget>
#include <QtGlobal>
#include <algorithm>
#include <libcockatrice/card/database/card_database_manager.h>
#include <libcockatrice/deck_list/deck_file_format.h>
#include <libcockatrice/deck_list/deck_list.h>
#include <libcockatrice/deck_list/loaded_deck.h>
#include <libcockatrice/protocol/pb/command_deck_del.pb.h>
#include <libcockatrice/protocol/pb/command_deck_del_dir.pb.h>
#include <libcockatrice/protocol/pb/command_deck_download.pb.h>
#include <libcockatrice/protocol/pb/command_deck_new_dir.pb.h>
#include <libcockatrice/protocol/pb/command_deck_set_visibility.pb.h>
#include <libcockatrice/protocol/pb/command_deck_share_create.pb.h>
#include <libcockatrice/protocol/pb/command_deck_upload.pb.h>
#include <libcockatrice/protocol/pb/response.pb.h>
#include <libcockatrice/protocol/pb/response_deck_download.pb.h>
#include <libcockatrice/protocol/pb/response_deck_upload.pb.h>
#include <libcockatrice/protocol/pending_command.h>
#include <libcockatrice/settings/network_settings.h>
#include <libcockatrice/settings/paths_settings.h>
#include <libcockatrice/utility/qt_utils.h>
#include <libcockatrice/utility/string_limits.h>
#include <optional>
#include <qlogging.h>
#include <qnamespace.h>
#include <string>

class TabSupervisor;

namespace
{
// How long to wait after the last visibility change before reading back the
// Public/Private column, in milliseconds.
constexpr int VISIBILITY_REFRESH_DELAY = 500;

// Whether the file's name matches one of the deck formats Cockatrice can load.
bool isSupportedDeckFile(const QString &filePath)
{
    return QDir::match(DeckLoader::ACCEPTED_FILE_EXTENSIONS, QFileInfo(filePath).fileName());
}
} // namespace

TabDeckStorage::TabDeckStorage(TabSupervisor *_tabSupervisor,
                               AbstractClient *_client,
                               const ServerInfo_User *currentUserInfo)
    : Tab(_tabSupervisor), client(_client)
{
    localDirModel = new QFileSystemModel(this);
    localDirModel->setRootPath(SettingsCache::instance().paths().getDeckPath());
    localDirModel->setNameFilters(DeckLoader::ACCEPTED_FILE_EXTENSIONS);
    localDirModel->setNameFilterDisables(false);
    localDirModel->sort(0, Qt::AscendingOrder);

    localDirView = new QTreeView;
    localDirView->setModel(localDirModel);
    localDirView->setColumnHidden(1, true);
    localDirView->setRootIndex(localDirModel->index(localDirModel->rootPath(), 0));
    localDirView->setSortingEnabled(true);
    localDirView->setSelectionMode(QAbstractItemView::ExtendedSelection);
    localDirView->header()->setSectionResizeMode(QHeaderView::ResizeToContents);
    localDirView->header()->setSortIndicator(0, Qt::AscendingOrder);

    connect(localDirView, &QTreeView::doubleClicked, this, &TabDeckStorage::actLocalDoubleClick);

    // Left side layout
    /* put an invisible dummy QToolBar in the leftmost column so that the main toolbar is centered.
     * Really ugly workaround, but I couldn't figure out the proper way to make it centered */
    QToolBar *dummyToolBar = new QToolBar(this);
    QSizePolicy sizePolicy = dummyToolBar->sizePolicy();
    sizePolicy.setRetainSizeWhenHidden(true);
    dummyToolBar->setSizePolicy(sizePolicy);
    dummyToolBar->setVisible(false);

    leftToolBar = new QToolBar(this);
    leftToolBar->setOrientation(Qt::Horizontal);
    leftToolBar->setIconSize(QSize(32, 32));

    QToolBar *leftRightmostToolBar = new QToolBar(this);
    leftRightmostToolBar->setOrientation(Qt::Horizontal);
    leftRightmostToolBar->setIconSize(QSize(32, 32));

    QGridLayout *leftToolBarLayout = new QGridLayout;
    leftToolBarLayout->addWidget(dummyToolBar, 0, 0, Qt::AlignLeft);
    leftToolBarLayout->addWidget(leftToolBar, 0, 1, Qt::AlignHCenter);
    leftToolBarLayout->addWidget(leftRightmostToolBar, 0, 2, Qt::AlignRight);

    QVBoxLayout *leftVbox = new QVBoxLayout;
    leftVbox->addWidget(localDirView);
    leftVbox->addLayout(leftToolBarLayout);
    leftGroupBox = new QGroupBox;
    leftGroupBox->setLayout(leftVbox);

    // Right side layout
    rightToolBar = new QToolBar;
    rightToolBar->setOrientation(Qt::Horizontal);
    rightToolBar->setIconSize(QSize(32, 32));
    QHBoxLayout *rightToolBarLayout = new QHBoxLayout;
    rightToolBarLayout->addStretch();
    rightToolBarLayout->addWidget(rightToolBar);
    rightToolBarLayout->addStretch();

    serverDirView = new RemoteDeckList_TreeWidget(client);

    connect(serverDirView, &QTreeView::doubleClicked, this, &TabDeckStorage::actRemoteDoubleClick);
    connect(serverDirView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
            [this] { onServerSelectionChanged(); });

    // Share bar for creating a share link from the selected server decks/folders.
    shareBar = new ShareBarWidget(this);
    connect(shareBar, &ShareBarWidget::createRequested, this, &TabDeckStorage::actShareSelection);
    connect(shareBar, &ShareBarWidget::cancelRequested, this, &TabDeckStorage::cancelShareDecks);
    shareBar->setVisible(false);

    shareTimeoutTimer = new QTimer(this);
    shareTimeoutTimer->setSingleShot(true);
    shareTimeoutTimer->setInterval(
        static_cast<int>((static_cast<qint64>(SettingsCache::instance().network().getTimeOut()) + 1) *
                         SettingsCache::instance().network().getKeepAlive() * 1000));
    connect(shareTimeoutTimer, &QTimer::timeout, this, &TabDeckStorage::onShareFromTreeTimeout);

    // Restartable single-shot refresh for the Public/Private column. It is
    // armed with the full network timeout when a publish is sent (so a dropped
    // reply still drains once) and re-armed with the short delay every time a
    // reply lands, so the drain cannot fire while a slow round trip is still in
    // flight. Either way the tree is re-read once things quiet down.
    visibilityRefreshTimer = new QTimer(this);
    visibilityRefreshTimer->setSingleShot(true);
    visibilityRefreshTimer->setInterval(VISIBILITY_REFRESH_DELAY);
    connect(visibilityRefreshTimer, &QTimer::timeout, this, &TabDeckStorage::onVisibilityRefreshTimeout);

    QVBoxLayout *rightVbox = new QVBoxLayout;
    rightVbox->addWidget(shareBar);
    rightVbox->addWidget(serverDirView);
    rightVbox->addLayout(rightToolBarLayout);
    rightGroupBox = new QGroupBox;
    rightGroupBox->setLayout(rightVbox);

    // combine layouts
    QHBoxLayout *hbox = new QHBoxLayout;
    hbox->addWidget(leftGroupBox);
    hbox->addWidget(rightGroupBox);

    // Left side actions
    aOpenLocalDeck = new QAction(this);
    aOpenLocalDeck->setIcon(loadThemedIcon(QStringLiteral("icons/pencil")));
    connect(aOpenLocalDeck, &QAction::triggered, this, &TabDeckStorage::actOpenLocalDeck);
    aRenameLocal = new QAction(this);
    aRenameLocal->setIcon(loadThemedIcon(QStringLiteral("icons/rename")));
    connect(aRenameLocal, &QAction::triggered, this, &TabDeckStorage::actRenameLocal);
    aUpload = new QAction(this);
    aUpload->setIcon(loadThemedIcon(QStringLiteral("icons/arrow_right")));
    connect(aUpload, &QAction::triggered, this, &TabDeckStorage::actUpload);
    aNewLocalFolder = new QAction(this);
    aNewLocalFolder->setIcon(qApp->style()->standardIcon(QStyle::SP_FileDialogNewFolder));
    connect(aNewLocalFolder, &QAction::triggered, this, &TabDeckStorage::actNewLocalFolder);
    aDeleteLocalDeck = new QAction(this);
    aDeleteLocalDeck->setIcon(
        loadThemedIcon(QStringLiteral("icons/remove_row"), AppColor::Negative, IconStyle::Sticker));
    connect(aDeleteLocalDeck, &QAction::triggered, this, &TabDeckStorage::actDeleteLocalDeck);

    aOpenDecksFolder = new QAction(this);
    aOpenDecksFolder->setIcon(qApp->style()->standardIcon(QStyle::SP_DirOpenIcon));
    connect(aOpenDecksFolder, &QAction::triggered, this, &TabDeckStorage::actOpenDecksFolder);

    // Right side actions
    aOpenRemoteDeck = new QAction(this);
    aOpenRemoteDeck->setIcon(loadThemedIcon(QStringLiteral("icons/pencil")));
    connect(aOpenRemoteDeck, &QAction::triggered, this, &TabDeckStorage::actOpenRemoteDeck);
    aDownload = new QAction(this);
    aDownload->setIcon(loadThemedIcon(QStringLiteral("icons/arrow_left")));
    connect(aDownload, &QAction::triggered, this, &TabDeckStorage::actDownload);
    aNewFolder = new QAction(this);
    aNewFolder->setIcon(qApp->style()->standardIcon(QStyle::SP_FileDialogNewFolder));
    connect(aNewFolder, &QAction::triggered, this, &TabDeckStorage::actNewFolder);
    aDeleteRemoteDeck = new QAction(this);
    aDeleteRemoteDeck->setIcon(
        loadThemedIcon(QStringLiteral("icons/remove_row"), AppColor::Negative, IconStyle::Sticker));
    connect(aDeleteRemoteDeck, &QAction::triggered, this, &TabDeckStorage::actDeleteRemoteDeck);

    aShareDecks = new QAction(this);
    aShareDecks->setIcon(loadThemedIcon(QStringLiteral("icons/share"), AppColor::Informational));
    connect(aShareDecks, &QAction::triggered, this, &TabDeckStorage::actShareDecks);

    aPublishDeck = new QAction(this);
    aPublishDeck->setIcon(loadThemedIcon(QStringLiteral("icons/lock")));
    connect(aPublishDeck, &QAction::triggered, this, &TabDeckStorage::actPublishDeck);

    // Add actions to toolbars
    leftToolBar->addAction(aOpenLocalDeck);
    leftToolBar->addAction(aRenameLocal);
    leftToolBar->addAction(aUpload);
    leftToolBar->addAction(aNewLocalFolder);
    leftToolBar->addAction(aDeleteLocalDeck);

    leftRightmostToolBar->addAction(aOpenDecksFolder);

    rightToolBar->addAction(aOpenRemoteDeck);
    rightToolBar->addAction(aDownload);
    rightToolBar->addAction(aShareDecks);
    rightToolBar->addAction(aPublishDeck);
    rightToolBar->addAction(aNewFolder);
    rightToolBar->addAction(aDeleteRemoteDeck);

    retranslateUi();

    QWidget *mainWidget = new QWidget(this);
    mainWidget->setLayout(hbox);
    setCentralWidget(mainWidget);

    connect(client, &AbstractClient::userInfoChanged, this, &TabDeckStorage::handleConnected);
    connect(client, &AbstractClient::statusChanged, this, &TabDeckStorage::handleConnectionChanged);
    setRemoteEnabled(currentUserInfo && currentUserInfo->user_level() & ServerInfo_User::IsRegistered);
}

void TabDeckStorage::retranslateUi()
{
    leftGroupBox->setTitle(tr("Local file system"));
    rightGroupBox->setTitle(tr("Server deck storage"));

    aOpenLocalDeck->setText(tr("Open in deck editor"));
    aRenameLocal->setText(tr("Rename deck or folder"));
    aUpload->setText(tr("Upload deck"));
    aOpenRemoteDeck->setText(tr("Open in deck editor"));
    aDownload->setText(tr("Download deck"));
    aNewLocalFolder->setText(tr("New folder"));
    aNewFolder->setText(tr("New folder"));
    aDeleteLocalDeck->setText(tr("Delete"));
    aDeleteRemoteDeck->setText(tr("Delete"));
    aShareDecks->setText(tr("Share decks"));
    aPublishDeck->setText(tr("Publish/unpublish deck"));
    aOpenDecksFolder->setText(tr("Open decks folder"));
    shareBar->retranslateUi();
    if (shareBar->isVisible()) {
        onServerSelectionChanged();
    }
}

QString TabDeckStorage::getTargetPath() const
{
    RemoteDeckList_TreeModel::Node *curRight = serverDirView->getCurrentItem();
    if (curRight == nullptr) {
        return {};
    }
    auto *dir = dynamic_cast<RemoteDeckList_TreeModel::DirectoryNode *>(curRight);
    if (dir == nullptr) {
        dir = dynamic_cast<RemoteDeckList_TreeModel::DirectoryNode *>(curRight->getParent());
        if (dir != nullptr) {
            return dir->getPath();
        } else {
            return {};
        }
    } else {
        return dir->getPath();
    }
}

void TabDeckStorage::handleConnected(const ServerInfo_User &userInfo)
{
    setRemoteEnabled(userInfo.user_level() & ServerInfo_User::IsRegistered);
}

/**
 * This is only responsible for handling the disconnect. The connect is already handled elsewhere
 */
void TabDeckStorage::handleConnectionChanged(ClientStatus status)
{
    if (status == StatusDisconnected) {
        visibilityRefreshTimer->stop();
        visibilityRefreshStarted = false;
        setRemoteEnabled(false);
    }
}

void TabDeckStorage::setRemoteEnabled(bool enabled)
{
    aUpload->setEnabled(enabled);
    aOpenRemoteDeck->setEnabled(enabled);
    aDownload->setEnabled(enabled);
    aShareDecks->setEnabled(enabled);
    aPublishDeck->setEnabled(enabled);
    aNewFolder->setEnabled(enabled);
    aDeleteRemoteDeck->setEnabled(enabled);

    if (enabled) {
        serverDirView->refreshTree();
    } else {
        setShareModeEnabled(false);
        serverDirView->clearTree();
    }
}

void TabDeckStorage::actLocalDoubleClick(const QModelIndex &curLeft)
{
    if (!localDirModel->isDir(curLeft)) {
        actOpenLocalDeck();
    }
}

void TabDeckStorage::actOpenLocalDeck()
{
    QModelIndexList curLefts = localDirView->selectionModel()->selectedRows();
    for (const auto &curLeft : curLefts) {
        if (localDirModel->isDir(curLeft)) {
            continue;
        }
        QString filePath = localDirModel->filePath(curLeft);

        if (!isSupportedDeckFile(filePath)) {
            continue;
        }

        std::optional<LoadedDeck> deckOpt = DeckLoader::loadFromFile(filePath, DeckFileFormat::Cockatrice, true);
        if (!deckOpt) {
            continue;
        }

        emit openDeckEditor(deckOpt.value());
    }
}

void TabDeckStorage::actRenameLocal()
{
    QModelIndexList curLefts = localDirView->selectionModel()->selectedRows();
    for (const auto &curLeft : curLefts) {
        const QFileInfo info = localDirModel->fileInfo(curLeft);

        const QString oldName = info.baseName();
        const QString title = info.isDir() ? tr("Rename local folder") : tr("Rename local file");

        bool ok;
        QString newName = QInputDialog::getText(this, title, tr("New name:"), QLineEdit::Normal, oldName, &ok);
        if (!ok) { // terminate all remaining selections if user cancels
            return;
        }
        if (newName.isEmpty() || oldName == newName) {
            continue;
        }

        QString newFileName = newName;
        if (!info.suffix().isEmpty()) {
            newFileName += "." + info.suffix();
        }
        const QString newFilePath = QFileInfo(info.dir(), newFileName).filePath();

        if (!QFile::rename(info.filePath(), newFilePath)) {
            QMessageBox::critical(this, tr("Error"), tr("Rename failed"));
        }
    }
}

void TabDeckStorage::actUpload()
{
    QModelIndexList curLefts = localDirView->selectionModel()->selectedRows();
    if (curLefts.isEmpty()) {
        return;
    }

    QString targetPath = getTargetPath();
    if (targetPath.length() > MAX_NAME_LENGTH) {
        qCritical() << "target path to upload to is too long" << targetPath;
        return;
    }

    for (const auto &curLeft : curLefts) {
        if (localDirModel->isDir(curLeft)) {
            continue;
        }

        QString filePath = localDirModel->filePath(curLeft);
        uploadDeck(filePath, targetPath);
    }
}

void TabDeckStorage::uploadDeck(const QString &filePath, const QString &targetPath)
{
    if (!isSupportedDeckFile(filePath)) {
        QMessageBox::critical(this, tr("Error"), tr("Invalid deck file"));
        return;
    }

    QFile deckFile(filePath);
    QFileInfo deckFileInfo(deckFile);

    std::optional<LoadedDeck> deckOpt = DeckLoader::loadFromFile(filePath, DeckFileFormat::Cockatrice, true);
    if (!deckOpt) {
        QMessageBox::critical(this, tr("Error"), tr("Invalid deck file"));
        return;
    }

    DeckList deck = deckOpt.value().deckList;

    if (deck.getName().isEmpty()) {
        bool ok;
        QString deckName =
            getTextWithMax(this, tr("Enter deck name"), tr("This decklist does not have a name.\nPlease enter a name:"),
                           QLineEdit::Normal, deckFileInfo.completeBaseName(), &ok);
        if (!ok) {
            return;
        }
        if (deckName.isEmpty()) {
            deckName = tr("Unnamed deck");
        }
        deck.setName(deckName);
    } else {
        deck.setName(deck.getName().left(MAX_NAME_LENGTH));
    }

    QString deckString = deck.writeToString_Native();
    if (deckString.length() > MAX_FILE_LENGTH) {
        QMessageBox::critical(this, tr("Error"), tr("Invalid deck file"));
        return;
    }

    Command_DeckUpload cmd;
    cmd.set_path(targetPath.toStdString());
    cmd.set_deck_list(deckString.toStdString());

    cmd.set_color_identity(getDeckColorIdentity(deck, CardDatabaseManager::query()).toStdString());

    PendingCommand *pend = client->prepareSessionCommand(cmd);
    connect(pend, &PendingCommand::finished, this, &TabDeckStorage::uploadFinished);
    client->sendCommand(pend);
}

void TabDeckStorage::uploadFinished(const Response &r, const CommandContainer &commandContainer)
{
    if (r.response_code() != Response::RespOk) {
        qCritical() << "failed to upload deck:" << r.response_code();
        QMessageBox::critical(this, tr("Error"), tr("Failed to upload deck to server"));
        return;
    }

    const Response_DeckUpload &resp = r.GetExtension(Response_DeckUpload::ext);
    const Command_DeckUpload &cmd = commandContainer.session_command(0).GetExtension(Command_DeckUpload::ext);

    serverDirView->addFileToTree(resp.new_file(), serverDirView->getNodeByPath(QString::fromStdString(cmd.path())));
}

void TabDeckStorage::actNewLocalFolder()
{
    QModelIndex curLeft = localDirView->selectionModel()->currentIndex();

    QModelIndex dirIndex;
    if (curLeft.isValid() && !localDirModel->isDir(curLeft)) {
        dirIndex = curLeft.parent();
    } else {
        dirIndex = curLeft;
    }

    bool ok;
    QString folderName =
        QInputDialog::getText(this, tr("New folder"), tr("Name of new folder:"), QLineEdit::Normal, "", &ok);
    if (!ok || folderName.isEmpty()) {
        return;
    }

    localDirModel->mkdir(dirIndex, folderName);
}

void TabDeckStorage::actDeleteLocalDeck()
{
    const QModelIndexList curLefts = localDirView->selectionModel()->selectedRows();

    if (curLefts.isEmpty()) {
        return;
    }

    if (QMessageBox::warning(this, tr("Delete local file"), tr("Are you sure you want to delete the selected files?"),
                             QMessageBox::Yes | QMessageBox::No) != QMessageBox::Yes) {
        return;
    }

    for (const auto &curLeft : curLefts) {
        if (curLeft.isValid()) {
            localDirModel->remove(curLeft);
        }
    }
}

void TabDeckStorage::actOpenDecksFolder()
{
    QString dir = localDirModel->rootPath();
    QtUtils::openPathInFileManager(dir);
}

void TabDeckStorage::actRemoteDoubleClick(const QModelIndex &curRight)
{
    if (dynamic_cast<RemoteDeckList_TreeModel::FileNode *>(serverDirView->getNode(curRight))) {
        actOpenRemoteDeck();
    }
}

void TabDeckStorage::actOpenRemoteDeck()
{
    for (const auto &curRight : serverDirView->getCurrentSelection()) {
        RemoteDeckList_TreeModel::FileNode *node = dynamic_cast<RemoteDeckList_TreeModel::FileNode *>(curRight);
        if (!node) {
            continue;
        }

        Command_DeckDownload cmd;
        cmd.set_deck_id(node->getId());

        PendingCommand *pend = client->prepareSessionCommand(cmd);
        connect(pend, &PendingCommand::finished, this, &TabDeckStorage::openRemoteDeckFinished);
        client->sendCommand(pend);
    }
}

void TabDeckStorage::openRemoteDeckFinished(const Response &r, const CommandContainer &commandContainer)
{
    if (r.response_code() != Response::RespOk) {
        return;
    }

    const Response_DeckDownload &resp = r.GetExtension(Response_DeckDownload::ext);
    const Command_DeckDownload &cmd = commandContainer.session_command(0).GetExtension(Command_DeckDownload::ext);

    std::optional<LoadedDeck> deckOpt = DeckLoader::loadFromRemote(QString::fromStdString(resp.deck()), cmd.deck_id());
    if (!deckOpt) {
        return;
    }

    emit openDeckEditor(deckOpt.value());
}

void TabDeckStorage::actDownload()
{
    QModelIndex curLeft = localDirView->selectionModel()->currentIndex();
    while (!localDirModel->isDir(curLeft)) {
        curLeft = curLeft.parent();
    }

    for (const auto curRight : serverDirView->selectionModel()->selectedRows()) {
        downloadNodeAtIndex(curLeft, curRight);
    }
}

void TabDeckStorage::downloadNodeAtIndex(const QModelIndex &curLeft, const QModelIndex &curRight)
{
    auto node = serverDirView->getNode(curRight);
    if (const auto dirNode = dynamic_cast<RemoteDeckList_TreeModel::DirectoryNode *>(node)) {
        // node at index is a folder
        const QString name = dirNode->getName();

        const auto dirIndex = curLeft.isValid() ? curLeft : localDirModel->index(localDirModel->rootPath());
        const auto newDirIndex = localDirModel->mkdir(dirIndex, name);

        int rows = serverDirView->model()->rowCount(curRight);
        for (int i = 0; i < rows; i++) {
            const auto childIndex = serverDirView->model()->index(i, 0, curRight);
            downloadNodeAtIndex(newDirIndex, childIndex);
        }
    } else if (const auto fileNode = dynamic_cast<RemoteDeckList_TreeModel::FileNode *>(node)) {
        // node at index is a deck
        const QString dirPath = curLeft.isValid() ? localDirModel->filePath(curLeft) : localDirModel->rootPath();
        const QString filePath = dirPath + QString("/deck_%1.cod").arg(fileNode->getId());

        Command_DeckDownload cmd;
        cmd.set_deck_id(fileNode->getId());

        PendingCommand *pend = client->prepareSessionCommand(cmd);
        pend->setExtraData(filePath);
        connect(pend, &PendingCommand::finished, this, &TabDeckStorage::downloadFinished);
        client->sendCommand(pend);
    }
    // node at index is invalid
}

void TabDeckStorage::downloadFinished(const Response &r,
                                      const CommandContainer & /*commandContainer*/,
                                      const QVariant &extraData)
{
    if (r.response_code() != Response::RespOk) {
        return;
    }

    const Response_DeckDownload &resp = r.GetExtension(Response_DeckDownload::ext);
    QString filePath = extraData.toString();

    DeckList deckList = DeckList(QString::fromStdString(resp.deck()));

    DeckLoader::saveToFile(deckList, filePath, DeckFileFormat::Cockatrice);
}

void TabDeckStorage::actNewFolder()
{
    QString targetPath = getTargetPath();
    int max_length = MAX_NAME_LENGTH - targetPath.length() - 1; // generated length would be path + / + name

    if (max_length < 1) { // can't create path that's short enough
        return;
    }

    QString folderName = getTextWithMax(this, tr("New folder"), tr("Name of new folder:"), max_length);
    if (folderName.isEmpty()) {
        return;
    }

    // '/' isn't a valid filename character on *nix so we're choosing to replace it with a different arbitrary
    // character.
    std::string folder = folderName.toStdString();
    std::replace(folder.begin(), folder.end(), '/', '-');

    Command_DeckNewDir cmd;
    cmd.set_path(targetPath.toStdString());
    cmd.set_dir_name(folder);

    PendingCommand *pend = client->prepareSessionCommand(cmd);
    connect(pend, &PendingCommand::finished, this, &TabDeckStorage::newFolderFinished);
    client->sendCommand(pend);
}

void TabDeckStorage::newFolderFinished(const Response &response, const CommandContainer &commandContainer)
{
    if (response.response_code() != Response::RespOk) {
        return;
    }

    const Command_DeckNewDir &cmd = commandContainer.session_command(0).GetExtension(Command_DeckNewDir::ext);
    serverDirView->addFolderToTree(QString::fromStdString(cmd.dir_name()),
                                   serverDirView->getNodeByPath(QString::fromStdString(cmd.path())));
}

void TabDeckStorage::actDeleteRemoteDeck()
{
    auto curRights = serverDirView->getCurrentSelection();

    if (curRights.isEmpty()) {
        return;
    }

    if (QMessageBox::warning(this, tr("Delete remote decks"), tr("Are you sure you want to delete the selected decks?"),
                             QMessageBox::Yes | QMessageBox::No) != QMessageBox::Yes) {
        return;
    }

    for (const auto &curRight : curRights) {
        deleteRemoteDeck(curRight);
    }
}

void TabDeckStorage::deleteRemoteDeck(const RemoteDeckList_TreeModel::Node *curRight)
{
    if (!curRight) {
        return;
    }

    PendingCommand *pend;
    if (const auto *dir = dynamic_cast<const RemoteDeckList_TreeModel::DirectoryNode *>(curRight)) {
        QString targetPath = dir->getPath();
        if (targetPath.isEmpty()) {
            return;
        }
        if (targetPath.length() > MAX_NAME_LENGTH) {
            qCritical() << "target path to delete is too long" << targetPath;
            return;
        }
        Command_DeckDelDir cmd;
        cmd.set_path(targetPath.toStdString());
        pend = client->prepareSessionCommand(cmd);
        connect(pend, &PendingCommand::finished, this, &TabDeckStorage::deleteFolderFinished);
    } else {
        const auto *deckNode = dynamic_cast<const RemoteDeckList_TreeModel::FileNode *>(curRight);
        Command_DeckDel cmd;
        cmd.set_deck_id(deckNode->getId());
        pend = client->prepareSessionCommand(cmd);
        connect(pend, &PendingCommand::finished, this, &TabDeckStorage::deleteDeckFinished);
    }

    client->sendCommand(pend);
}

void TabDeckStorage::deleteDeckFinished(const Response &response, const CommandContainer &commandContainer)
{
    if (response.response_code() != Response::RespOk) {
        return;
    }

    const Command_DeckDel &cmd = commandContainer.session_command(0).GetExtension(Command_DeckDel::ext);
    RemoteDeckList_TreeModel::Node *toDelete = serverDirView->getNodeById(cmd.deck_id());
    if (toDelete) {
        serverDirView->removeNode(toDelete);
    }
}

void TabDeckStorage::deleteFolderFinished(const Response &response, const CommandContainer &commandContainer)
{
    if (response.response_code() != Response::RespOk) {
        return;
    }

    const Command_DeckDelDir &cmd = commandContainer.session_command(0).GetExtension(Command_DeckDelDir::ext);
    RemoteDeckList_TreeModel::Node *toDelete = serverDirView->getNodeByPath(QString::fromStdString(cmd.path()));
    if (toDelete) {
        serverDirView->removeNode(toDelete);
    }
}

void TabDeckStorage::actShareDecks()
{
    setShareModeEnabled(true);
}

void TabDeckStorage::cancelShareDecks()
{
    setShareModeEnabled(false);
}

void TabDeckStorage::setShareModeEnabled(bool enabled)
{
    shareBar->setVisible(enabled);
    if (enabled) {
        shareBar->setCreateEnabled(true);
        shareBar->setName(tr("Shared decks"));
        onServerSelectionChanged();
        shareBar->focusName();
    } else {
        // Abandon any in-flight request: otherwise the timer keeps running and a late
        // response reports the share as created after the user already backed out.
        shareTimeoutTimer->stop();
        shareInFlightSeq = 0;
        serverDirView->clearSelection();
    }
}

void TabDeckStorage::onServerSelectionChanged()
{
    if (!shareBar->isVisible()) {
        return;
    }
    const auto selection = serverDirView->getCurrentSelection();
    int folders = 0;
    int files = 0;
    for (const auto *node : selection) {
        if (dynamic_cast<const RemoteDeckList_TreeModel::DirectoryNode *>(node)) {
            ++folders;
        } else {
            ++files;
        }
    }

    QString hint;
    if (folders > 1) {
        hint = tr("Only one folder can be shared at a time.");
    } else if (folders > 0 && files > 0) {
        hint = tr("Share either a folder or decks, not both.");
    } else if (folders == 0 && files == 0) {
        hint = tr("Select folders or decks in the tree to share.");
    }
    shareBar->setHintText(hint, !hint.isEmpty());

    QStringList parts;
    if (folders > 0) {
        parts << tr("%n folder(s)", "", folders);
    }
    if (files > 0) {
        parts << tr("%n deck(s)", "", files);
    }
    shareBar->setCountText(parts.isEmpty() ? tr("No decks selected")
                                           : tr("Selected: %1").arg(parts.join(QStringLiteral(", "))));
}

void TabDeckStorage::actShareSelection()
{
    const auto selection = serverDirView->getCurrentSelection();
    QString sharedFolder;
    bool hasFile = false;
    bool hasFolder = false;
    for (const auto *node : selection) {
        if (const auto *dirNode = dynamic_cast<const RemoteDeckList_TreeModel::DirectoryNode *>(node)) {
            hasFolder = true;
            if (!sharedFolder.isEmpty()) {
                showShareNotice(tr("Only one folder can be shared at a time."), true);
                return;
            }
            sharedFolder = dirNode->getPath();
        } else {
            hasFile = true;
        }
    }

    if (hasFile && hasFolder) {
        showShareNotice(tr("Share either a folder or decks, not both."), true);
        return;
    }
    if (hasFolder && sharedFolder.isEmpty()) {
        showShareNotice(tr("The root folder cannot be shared."), true);
        return;
    }

    Command_DeckShareCreate cmd;
    cmd.set_name(shareBar->name().toStdString());
    if (cmd.name().empty()) {
        cmd.set_name(tr("Shared decks").toStdString());
    }

    if (!sharedFolder.isEmpty()) {
        cmd.set_folder_path(sharedFolder.toStdString());
    } else {
        for (const auto *node : selection) {
            if (const auto *fileNode = dynamic_cast<const RemoteDeckList_TreeModel::FileNode *>(node)) {
                DeckShareItem *item = cmd.add_items();
                item->set_deck_id(fileNode->getId());
            }
        }
    }

    if (cmd.items_size() == 0 && cmd.folder_path().empty()) {
        showShareNotice(tr("Select decks to share."), true);
        return;
    }

    shareBar->setCreateEnabled(false);
    const int seq = ++shareRequestSeq;
    shareInFlightSeq = seq;
    PendingCommand *pend = client->prepareSessionCommand(cmd);
    connect(pend, &PendingCommand::finished, this,
            [this, seq](const Response &response, const CommandContainer &commandContainer) {
                if (shareInFlightSeq != seq) {
                    return; // the user cancelled or a newer request superseded this one
                }
                shareInFlightSeq = 0;
                shareFromTreeFinished(response, commandContainer);
            });
    client->sendCommand(pend);
    shareTimeoutTimer->start();
}

void TabDeckStorage::shareFromTreeFinished(const Response &response, const CommandContainer & /*commandContainer*/)
{
    shareTimeoutTimer->stop();
    shareBar->setCreateEnabled(true);
    if (response.response_code() != Response::RespOk) {
        qWarning() << "failed to create deck share:" << response.response_code();
        showShareNotice(tr("Failed to create the share link (server response code %1).")
                            .arg(QString::number(static_cast<int>(response.response_code()))),
                        true);
        return;
    }
    const DeckShareUtils::ShareResponse share = DeckShareUtils::handleShareResponse(client, response);

    showShareNotice(
        tr("Share link copied to the clipboard.\nExpires on %1.").arg(DeckShareUtils::formatShareExpiry(share.expiry)));
    setShareModeEnabled(false);
}

void TabDeckStorage::showShareNotice(const QString &message, bool warning)
{
    QMessageBox box(warning ? QMessageBox::Warning : QMessageBox::Information, tr("Share link"), message,
                    QMessageBox::Ok, this);
    box.exec();
}

void TabDeckStorage::onShareFromTreeTimeout()
{
    if (shareInFlightSeq == 0) {
        return; // share mode was left while the request was still outstanding
    }
    shareInFlightSeq = 0;
    shareBar->setCreateEnabled(true);
    showShareNotice(tr("The server did not respond in time. Try again."), true);
}

void TabDeckStorage::actPublishDeck()
{
    visibilityFailures.clear();
    // Arm the drain with the full network timeout so a lost reply still costs
    // one refresh instead of a dead column; each reply shrinks it to the short
    // delay below, so a slow round trip is never drained before it lands.
    const int visibilityFailSafeDelay =
        static_cast<int>((static_cast<qint64>(SettingsCache::instance().network().getTimeOut()) + 1) *
                         SettingsCache::instance().network().getKeepAlive() * 1000);

    const auto selection = serverDirView->getCurrentSelection();
    for (const auto *node : selection) {
        Command_DeckSetVisibility cmd;
        if (const auto *fileNode = dynamic_cast<const RemoteDeckList_TreeModel::FileNode *>(node)) {
            cmd.set_deck_id(fileNode->getId());
        } else if (const auto *dirNode = dynamic_cast<const RemoteDeckList_TreeModel::DirectoryNode *>(node)) {
            const QString path = dirNode->getPath();
            if (path.isEmpty()) {
                continue; // the root folder cannot be published
            }
            cmd.set_folder_path(path.toStdString());
        } else {
            continue;
        }
        // Toggle the node's own visibility bit (what the server persists); the
        // effective visibility shown by the column may additionally be inherited
        // from a parent folder.
        cmd.set_is_public(!node->isPublic());

        PendingCommand *pend = client->prepareSessionCommand(cmd);
        connect(pend, &PendingCommand::finished, this, &TabDeckStorage::setVisibilityFinished);
        visibilityRefreshStarted = true;
        visibilityRefreshTimer->setInterval(visibilityFailSafeDelay);
        visibilityRefreshTimer->start();
        client->sendCommand(pend);
    }
}

void TabDeckStorage::setVisibilityFinished(const Response &r, const CommandContainer & /*commandContainer*/)
{
    if (r.response_code() == Response::RespOk) {
        if (visibilityRefreshStarted) {
            visibilityRefreshTimer->setInterval(VISIBILITY_REFRESH_DELAY);
            visibilityRefreshTimer->start();
        }
        return;
    }

    // Collect batch failures and surface them once, when publishing quiets
    // down, instead of stacking one modal dialog per rejected node.
    const QString message = tr("Failed to change deck visibility on server (response code %1).")
                                .arg(QString::number(static_cast<int>(r.response_code())));
    if (visibilityRefreshStarted) {
        visibilityFailures.append(message);
        visibilityRefreshTimer->setInterval(VISIBILITY_REFRESH_DELAY);
        visibilityRefreshTimer->start();
    } else {
        QMessageBox::critical(this, tr("Error"), message);
    }
}

void TabDeckStorage::onVisibilityRefreshTimeout()
{
    visibilityRefreshStarted = false;
    if (!visibilityFailures.isEmpty()) {
        QMessageBox::critical(
            this, tr("Error"),
            tr("Failed to change the visibility of %n selected deck(s).", "", visibilityFailures.size()));
        visibilityFailures.clear();
    }
    serverDirView->refreshTree();
}