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transmission/gtk/Notify.cc

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// This file Copyright © Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#include "Notify.h"
#include "GtkCompat.h"
#include "Prefs.h"
#include "PrefsDialog.h"
#include "Session.h"
#include "Utils.h"
#include <giomm/asyncresult.h>
#include <giomm/dbusproxy.h>
#include <glibmm/error.h>
#include <glibmm/i18n.h>
#include <glibmm/miscutils.h>
#include <glibmm/spawn.h>
#include <glibmm/ustring.h>
#include <glibmm/variant.h>
#include <fmt/core.h>
#include <map>
#include <utility>
#include <vector>
using namespace std::literals;
using StringVariantType = Glib::Variant<Glib::ustring>;
using StringListVariantType = Glib::Variant<std::vector<Glib::ustring>>;
using UInt32VariantType = Glib::Variant<guint32>;
namespace
{
auto const NotificationsDbusName = "org.freedesktop.Notifications"sv; // TODO(C++20): Use ""s
auto const NotificationsDbusCoreObject = "/org/freedesktop/Notifications"sv; // TODO(C++20): Use ""s
auto const NotificationsDbusCoreInterface = "org.freedesktop.Notifications"sv; // TODO(C++20): Use ""s
struct TrNotification
{
Glib::RefPtr<Session> core;
tr_torrent_id_t torrent_id = {};
};
Glib::RefPtr<Gio::DBus::Proxy> proxy;
std::map<guint32, TrNotification> active_notifications;
bool server_supports_actions = false;
template<typename... Ts>
Glib::VariantContainerBase make_variant_tuple(Ts&&... args)
{
return Glib::VariantContainerBase::create_tuple(
{ Glib::Variant<std::remove_cv_t<std::remove_reference_t<Ts>>>::create(std::forward<Ts>(args))... });
}
void get_capabilities_callback(Glib::RefPtr<Gio::AsyncResult>& res)
{
auto result = Glib::VariantContainerBase();
try
{
result = proxy->call_finish(res);
}
catch (Glib::Error const&)
{
return;
}
if (!result || result.get_n_children() != 1 || !result.get_child(0).is_of_type(StringListVariantType::variant_type()))
{
return;
}
auto const caps = Glib::VariantBase::cast_dynamic<StringListVariantType>(result.get_child(0)).get();
for (auto const& cap : caps)
{
if (cap == "actions")
{
server_supports_actions = true;
break;
}
}
}
void g_signal_callback(
Glib::ustring const& /*sender_name*/,
Glib::ustring const& signal_name,
Glib::VariantContainerBase params)
{
g_return_if_fail(params.get_n_children() > 0 && params.get_child(0).is_of_type(UInt32VariantType::variant_type()));
auto const id = Glib::VariantBase::cast_dynamic<UInt32VariantType>(params.get_child(0)).get();
auto const n_it = active_notifications.find(id);
if (n_it == active_notifications.end())
{
return;
}
auto const& n = n_it->second;
if (signal_name == "NotificationClosed")
{
active_notifications.erase(n_it);
}
else if (
signal_name == "ActionInvoked" && params.get_n_children() > 1 &&
params.get_child(1).is_of_type(StringVariantType::variant_type()))
{
auto const* tor = n.core->find_torrent(n.torrent_id);
if (tor == nullptr)
{
return;
}
auto const action = Glib::VariantBase::cast_dynamic<StringVariantType>(params.get_child(1)).get();
if (action == "folder")
{
n.core->open_folder(n.torrent_id);
}
else if (action == "file")
{
char const* dir = tr_torrentGetDownloadDir(tor);
auto const path = Glib::build_filename(dir, tr_torrentFile(tor, 0).name);
gtr_open_file(path);
}
else if (action == "start-now")
{
n.core->start_now(n.torrent_id);
}
}
}
void dbus_proxy_ready_callback(Glib::RefPtr<Gio::AsyncResult>& res)
{
try
{
proxy = Gio::DBus::Proxy::create_for_bus_finish(res);
}
catch (Glib::Error const& e)
{
gtr_warning(fmt::format(
_("Couldn't create proxy for '{bus}': {error} ({error_code})"),
fmt::arg("bus", NotificationsDbusName),
fmt::arg("error", TR_GLIB_EXCEPTION_WHAT(e)),
fmt::arg("error_code", e.code())));
return;
}
proxy->signal_signal().connect(&g_signal_callback);
proxy->call("GetCapabilities", &get_capabilities_callback);
}
} // namespace
void gtr_notify_init()
{
Gio::DBus::Proxy::create_for_bus(
TR_GIO_DBUS_BUS_TYPE(SESSION),
std::string(NotificationsDbusName),
std::string(NotificationsDbusCoreObject),
std::string(NotificationsDbusCoreInterface),
&dbus_proxy_ready_callback,
{},
TR_GIO_DBUS_PROXY_FLAGS(DO_NOT_LOAD_PROPERTIES));
}
namespace
{
void notify_callback(Glib::RefPtr<Gio::AsyncResult>& res, TrNotification const& n)
{
auto result = Glib::VariantContainerBase();
try
{
result = proxy->call_finish(res);
}
catch (Glib::Error const&)
{
return;
}
if (!result || result.get_n_children() != 1 || !result.get_child(0).is_of_type(UInt32VariantType::variant_type()))
{
return;
}
auto const id = Glib::VariantBase::cast_dynamic<UInt32VariantType>(result.get_child(0)).get();
active_notifications.try_emplace(id, n);
}
} // namespace
void gtr_notify_torrent_completed(Glib::RefPtr<Session> const& core, tr_torrent_id_t tor_id)
{
if (gtr_pref_flag_get(TR_KEY_torrent_complete_sound_enabled))
{
auto const argv = gtr_pref_strv_get(TR_KEY_torrent_complete_sound_command);
try
{
Glib::spawn_async({}, argv, TR_GLIB_SPAWN_FLAGS(SEARCH_PATH));
}
catch (Glib::SpawnError const&)
{
}
}
if (!gtr_pref_flag_get(TR_KEY_torrent_complete_notification_enabled))
{
return;
}
g_return_if_fail(proxy != nullptr);
auto const* const tor = core->find_torrent(tor_id);
auto const n = TrNotification{ core, tor_id };
std::vector<Glib::ustring> actions;
if (server_supports_actions)
{
if (tr_torrentFileCount(tor) == 1)
{
actions.emplace_back("file");
actions.emplace_back(_("Open File"));
}
else
{
actions.emplace_back("folder");
actions.emplace_back(_("Open Folder"));
}
}
std::map<Glib::ustring, Glib::VariantBase> hints;
hints.try_emplace("category", StringVariantType::create("transfer.complete"));
proxy->call(
"Notify",
[n](auto& res) { notify_callback(res, n); },
make_variant_tuple(
Glib::ustring("Transmission"),
0U,
Glib::ustring("transmission"),
Glib::ustring(_("Torrent Complete")),
Glib::ustring(tr_torrentName(tor)),
actions,
hints,
-1));
}
void gtr_notify_torrent_added(Glib::RefPtr<Session> const& core, tr_torrent_id_t tor_id)
{
g_return_if_fail(proxy != nullptr);
if (!gtr_pref_flag_get(TR_KEY_torrent_added_notification_enabled))
{
return;
}
auto const* const tor = core->find_torrent(tor_id);
std::vector<Glib::ustring> actions;
if (server_supports_actions)
{
actions.emplace_back("start-now");
actions.emplace_back(_("Start Now"));
}
auto const n = TrNotification{ core, tor_id };
proxy->call(
"Notify",
[n](auto& res) { notify_callback(res, n); },
make_variant_tuple(
Glib::ustring("Transmission"),
0U,
Glib::ustring("transmission"),
Glib::ustring(_("Torrent Added")),
Glib::ustring(tr_torrentName(tor)),
actions,
std::map<Glib::ustring, Glib::VariantBase>(),
-1));
}
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