/***
  This file is part of paprefs.

  Copyright 2006-2008 Lennart Poettering

  paprefs is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  paprefs is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with paprefs. If not, see <http://www.gnu.org/licenses/>.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <signal.h>

#include <gtkmm.h>
#include <libglademm.h>
#include <gconfmm.h>
#include <libintl.h>

#define PA_GCONF_ROOT "/system/pulseaudio"
#define PA_GCONF_PATH_MODULES PA_GCONF_ROOT"/modules"

class MainWindow : public Gtk::Window {
public:
    MainWindow(BaseObjectType* cobject, const Glib::RefPtr<Gnome::Glade::Xml>& x);
    static MainWindow* create();

    Gtk::EventBox *titleEventBox;
    Gtk::Button *closeButton;

    Gtk::CheckButton
        *remoteAccessCheckButton,
        *zeroconfPublishCheckButton,
        *zeroconfDiscoverCheckButton,
        *anonymousAuthCheckButton,
        *rtpReceiveCheckButton,
        *rtpSendCheckButton,
        *rtpLoopbackCheckButton,
        *combineCheckButton;

    Gtk::RadioButton
        *rtpMikeRadioButton,
        *rtpSpeakerRadioButton,
        *rtpNullSinkRadioButton;

    Glib::RefPtr<Gnome::Conf::Client> gconf;

    bool ignoreChanges;

    void onCloseButtonClicked();
    void updateSensitive();
    void onChangeRemoteAccess();
    void onChangeZeroconfDiscover();
    void onChangeRtpReceive();
    void onChangeRtpSend();
    void onChangeCombine();
    void readFromGConf();
    void checkForModules();
    void writeToGConfRemoteAccess();
    void writeToGConfZeroconfDiscover();
    void writeToGConfRtpReceive();
    void writeToGConfRtpSend();
    void writeToGConfCombine();
    void onGConfChange(const Glib::ustring& key, const Gnome::Conf::Value& value);

    bool rtpRecvAvailable, rtpSendAvailable, zeroconfPublishAvailable, zeroconfDiscoverAvailable, remoteAvailable;
};

MainWindow::MainWindow(BaseObjectType* cobject, const Glib::RefPtr<Gnome::Glade::Xml>& x) :
    Gtk::Window(cobject), ignoreChanges(true) {

    x->get_widget("titleEventBox", titleEventBox);
    x->get_widget("closeButton", closeButton);

    x->get_widget("remoteAccessCheckButton", remoteAccessCheckButton);
    x->get_widget("zeroconfDiscoverCheckButton", zeroconfDiscoverCheckButton);
    x->get_widget("zeroconfBrowseCheckButton", zeroconfPublishCheckButton);
    x->get_widget("anonymousAuthCheckButton", anonymousAuthCheckButton);
    x->get_widget("rtpReceiveCheckButton", rtpReceiveCheckButton);
    x->get_widget("rtpSendCheckButton", rtpSendCheckButton);
    x->get_widget("rtpLoopbackCheckButton", rtpLoopbackCheckButton);
    x->get_widget("combineCheckButton", combineCheckButton);

    x->get_widget("rtpMikeRadioButton", rtpMikeRadioButton);
    x->get_widget("rtpSpeakerRadioButton", rtpSpeakerRadioButton);
    x->get_widget("rtpNullSinkRadioButton", rtpNullSinkRadioButton);

    Gdk::Color c("white");
    titleEventBox->modify_bg(Gtk::STATE_NORMAL, c);

    checkForModules();

    gconf = Gnome::Conf::Client::get_default_client();
    gconf->set_error_handling(Gnome::Conf::CLIENT_HANDLE_ALL);
    gconf->add_dir(PA_GCONF_ROOT, Gnome::Conf::CLIENT_PRELOAD_RECURSIVE);

    gconf->signal_value_changed().connect(sigc::mem_fun(*this, &MainWindow::onGConfChange));
    readFromGConf();

    closeButton->signal_clicked().connect(sigc::mem_fun(*this, &MainWindow::onCloseButtonClicked));

    remoteAccessCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeRemoteAccess));
    zeroconfPublishCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeRemoteAccess));
    anonymousAuthCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeRemoteAccess));

    zeroconfDiscoverCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeZeroconfDiscover));

    rtpReceiveCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeRtpReceive));

    rtpSendCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeRtpSend));
    rtpLoopbackCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeRtpSend));
    rtpMikeRadioButton->signal_clicked().connect(sigc::mem_fun(*this, &MainWindow::onChangeRtpSend));
    rtpSpeakerRadioButton->signal_clicked().connect(sigc::mem_fun(*this, &MainWindow::onChangeRtpSend));
    rtpNullSinkRadioButton->signal_clicked().connect(sigc::mem_fun(*this, &MainWindow::onChangeRtpSend));

    combineCheckButton->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::onChangeCombine));
}

MainWindow* MainWindow::create() {
    MainWindow* w;
    Glib::RefPtr<Gnome::Glade::Xml> x = Gnome::Glade::Xml::create(GLADE_FILE, "mainWindow");
    x->get_widget_derived("mainWindow", w);
    return w;
}

void MainWindow::onCloseButtonClicked() {
    Gtk::Main::quit();
}

void MainWindow::updateSensitive() {
    bool b;

    remoteAccessCheckButton->set_sensitive(remoteAvailable);
    b = remoteAccessCheckButton->get_active();
    zeroconfPublishCheckButton->set_sensitive(b && zeroconfPublishAvailable);
    anonymousAuthCheckButton->set_sensitive(b && remoteAvailable);

    zeroconfDiscoverCheckButton->set_sensitive(zeroconfDiscoverAvailable);

    rtpReceiveCheckButton->set_sensitive(rtpRecvAvailable);
    rtpSendCheckButton->set_sensitive(rtpSendAvailable);
    b = rtpSendCheckButton->get_active();
    rtpLoopbackCheckButton->set_sensitive(b && !rtpSpeakerRadioButton->get_active() && rtpSendAvailable);
    rtpMikeRadioButton->set_sensitive(b && rtpSendAvailable);
    rtpSpeakerRadioButton->set_sensitive(b && rtpSendAvailable);
    rtpNullSinkRadioButton->set_sensitive(b && rtpSendAvailable);
}

void MainWindow::onChangeRemoteAccess() {

    if (ignoreChanges)
        return;

    updateSensitive();
    writeToGConfRemoteAccess();
}

void MainWindow::onChangeZeroconfDiscover() {

    if (ignoreChanges)
        return;

    updateSensitive();
    writeToGConfZeroconfDiscover();
}

void MainWindow::onChangeRtpReceive() {
    if (ignoreChanges)
        return;

    updateSensitive();
    writeToGConfRtpReceive();
    writeToGConfRtpSend();
}

void MainWindow::onChangeRtpSend() {
    if (ignoreChanges)
        return;

    updateSensitive();
    writeToGConfRtpSend();
}

void MainWindow::onChangeCombine() {
    Gnome::Conf::ChangeSet changeSet;

    if (ignoreChanges)
        return;

    writeToGConfCombine();
}

void MainWindow::writeToGConfCombine() {
    Gnome::Conf::ChangeSet changeSet;
    changeSet.set(PA_GCONF_PATH_MODULES"/combine/locked", true);
    gconf->change_set_commit(changeSet, true);

    if (combineCheckButton->get_active()) {
        changeSet.set(PA_GCONF_PATH_MODULES"/combine/name0", Glib::ustring("module-combine"));
        changeSet.set(PA_GCONF_PATH_MODULES"/combine/args0", Glib::ustring(""));

        changeSet.set(PA_GCONF_PATH_MODULES"/combine/enabled", true);
    } else
        changeSet.set(PA_GCONF_PATH_MODULES"/combine/enabled", false);

    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/combine/locked", false);
    gconf->change_set_commit(changeSet, true);

    gconf->suggest_sync();
}

void MainWindow::writeToGConfRemoteAccess() {
    Gnome::Conf::ChangeSet changeSet;
    bool zeroconfEnabled, anonymousEnabled;

    changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/locked", true);
    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/zeroconf_enabled", zeroconfEnabled = zeroconfPublishCheckButton->get_active());
    changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/anonymous_enabled", anonymousEnabled = anonymousAuthCheckButton->get_active());

    if (remoteAccessCheckButton->get_active()) {
        changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/name0", Glib::ustring("module-native-protocol-tcp"));
        changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/name1", Glib::ustring("module-esound-protocol-tcp"));

        if (anonymousEnabled) {
            changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/args0", Glib::ustring("auth-anonymous=1"));
            changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/args1", Glib::ustring("auth-anonymous=1"));
        } else {
            changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/args0", Glib::ustring(""));
            changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/args1", Glib::ustring(""));
        }

        if (zeroconfEnabled) {
            changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/name2", Glib::ustring("module-zeroconf-publish"));
            changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/args2", Glib::ustring(""));
        } else {
            changeSet.unset(PA_GCONF_PATH_MODULES"/remote-access/name2");
            changeSet.unset(PA_GCONF_PATH_MODULES"/remote-access/args2");
        }

        changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/enabled", true);
    } else
        changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/enabled", false);

    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/remote-access/locked", false);
    gconf->change_set_commit(changeSet, true);

    gconf->suggest_sync();
}

void MainWindow::writeToGConfZeroconfDiscover() {
    Gnome::Conf::ChangeSet changeSet;

    changeSet.set(PA_GCONF_PATH_MODULES"/zeroconf-discover/locked", true);
    gconf->change_set_commit(changeSet, true);

    if (zeroconfDiscoverCheckButton->get_active()) {
        changeSet.set(PA_GCONF_PATH_MODULES"/zeroconf-discover/name0", Glib::ustring("module-zeroconf-discover"));
        changeSet.set(PA_GCONF_PATH_MODULES"/zeroconf-discover/args0", Glib::ustring(""));

        changeSet.set(PA_GCONF_PATH_MODULES"/zeroconf-discover/enabled", true);
    } else
        changeSet.set(PA_GCONF_PATH_MODULES"/zeroconf-discover/enabled", false);

    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/zeroconf-discover/locked", false);
    gconf->change_set_commit(changeSet, true);

    gconf->suggest_sync();
}

void MainWindow::writeToGConfRtpReceive() {
    Gnome::Conf::ChangeSet changeSet;

    changeSet.set(PA_GCONF_PATH_MODULES"/rtp-recv/locked", true);
    gconf->change_set_commit(changeSet, true);

    if (rtpReceiveCheckButton->get_active()) {
        changeSet.set(PA_GCONF_PATH_MODULES"/rtp-recv/name0", Glib::ustring("module-rtp-recv"));
        changeSet.set(PA_GCONF_PATH_MODULES"/rtp-recv/args0", Glib::ustring(""));

        changeSet.set(PA_GCONF_PATH_MODULES"/rtp-recv/enabled", true);
    }  else
        changeSet.set(PA_GCONF_PATH_MODULES"/rtp-recv/enabled", false);

    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/rtp-recv/locked", false);
    gconf->change_set_commit(changeSet, true);

    gconf->suggest_sync();
}

void MainWindow::writeToGConfRtpSend() {
    Gnome::Conf::ChangeSet changeSet;
    bool loopbackEnabled, mikeEnabled, speakerEnabled = false;

    changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/locked", true);
    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/loopback_enabled", loopbackEnabled = rtpLoopbackCheckButton->get_active());

    changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/mode", Glib::ustring(
                          (mikeEnabled = rtpMikeRadioButton->get_active()) ? "microphone" :
                          ((speakerEnabled = rtpSpeakerRadioButton->get_active()) ? "speaker" : "null-sink")));

    if (rtpSendCheckButton->get_active()) {
        if (!mikeEnabled && !speakerEnabled) {
            changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/name0", Glib::ustring("module-null-sink"));
            changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/args0", Glib::ustring("sink_name=rtp format=s16be channels=2 rate=44100 description=\"RTP Multicast Sink\""));

            changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/name1", Glib::ustring("module-rtp-send"));
            changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/args1", Glib::ustring(loopbackEnabled ? "source=rtp.monitor loop=1" : "source=rtp.monitor loop=0"));
        } else {
            char tmp[256];

            snprintf(tmp, sizeof(tmp), "%s %s",
                     mikeEnabled ? "source=@DEFAULT_SOURCE@" : "source=@DEFAULT_MONITOR@",
                     mikeEnabled && loopbackEnabled ? "loop=1" : "loop=0");

            changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/name0", Glib::ustring("module-rtp-send"));
            changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/args0", Glib::ustring(tmp));

            changeSet.unset(PA_GCONF_PATH_MODULES"/rtp-send/name1");
            changeSet.unset(PA_GCONF_PATH_MODULES"/rtp-send/args1");
        }

        changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/enabled", true);
    }  else
        changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/enabled", false);

    gconf->change_set_commit(changeSet, true);

    changeSet.set(PA_GCONF_PATH_MODULES"/rtp-send/locked", false);
    gconf->change_set_commit(changeSet, true);

    gconf->suggest_sync();
}

void MainWindow::onGConfChange(const Glib::ustring&, const Gnome::Conf::Value&) {
    readFromGConf();
}

void MainWindow::readFromGConf() {
    Glib::ustring mode;

    ignoreChanges = TRUE;

    remoteAccessCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/remote-access/enabled"));
    zeroconfPublishCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/remote-access/zeroconf_enabled"));
    anonymousAuthCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/remote-access/anonymous_enabled"));

    zeroconfDiscoverCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/zeroconf-discover/enabled"));

    rtpReceiveCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/rtp-recv/enabled"));

    rtpSendCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/rtp-send/enabled"));
    rtpLoopbackCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/rtp-send/loopback_enabled"));

    mode = gconf->get_string(PA_GCONF_PATH_MODULES"/rtp-send/mode");
    if (mode == "microphone")
        rtpMikeRadioButton->set_active(TRUE);
    else if (mode == "speaker")
        rtpSpeakerRadioButton->set_active(TRUE);
    else
        rtpNullSinkRadioButton->set_active(TRUE);

    combineCheckButton->set_active(gconf->get_bool(PA_GCONF_PATH_MODULES"/combine/enabled"));

    ignoreChanges = FALSE;

    updateSensitive();
}

void MainWindow::checkForModules() {

    remoteAvailable =
        access(MODULESDIR "module-esound-protocol-tcp" SHREXT, F_OK) == 0 ||
        access(MODULESDIR "module-native-protocol-tcp" SHREXT, F_OK) == 0;

    zeroconfPublishAvailable = access(MODULESDIR "module-zeroconf-publish" SHREXT, F_OK) == 0;
    zeroconfDiscoverAvailable = access(MODULESDIR "module-zeroconf-discover" SHREXT, F_OK) == 0;

    rtpRecvAvailable = access(MODULESDIR "module-rtp-recv" SHREXT, F_OK) == 0;
    rtpSendAvailable = access(MODULESDIR "module-rtp-send" SHREXT, F_OK) == 0;
}

int main(int argc, char *argv[]) {

    /* Initialize the i18n stuff */
    bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
    bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
    textdomain(GETTEXT_PACKAGE);

    signal(SIGPIPE, SIG_IGN);

    Gtk::Main kit(argc, argv);

    Gnome::Conf::init();

    Gtk::Window* mainWindow = MainWindow::create();

    Gtk::Main::run(*mainWindow);
    delete mainWindow;
}