/* Copyright (C) 2015
 * swift project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
 * including this file, may be copied, modified, propagated, or distributed except according to the terms
 * contained in the LICENSE file.
 */

#include "swiftlauncher.h"
#include "ui_swiftlauncher.h"
#include "blackgui/stylesheetutility.h"
#include "blackcore/setupreader.h"
#include "blackmisc/dbusserver.h"
#include "blackmisc/network/networkutils.h"
#include "blackmisc/icons.h"
#include "blackmisc/project.h"
#include "blackmisc/logmessage.h"
#include "blackmisc/loghandler.h"
#include <QPixmap>
#include <QBitmap>
#include <QTimer>
#include <QProcess>
#include <QDesktopServices>
#include <QShortcut>
#include <qcompilerdetection.h>

#ifndef Q_CC_MINGW
#include <QtWebEngineWidgets/QWebEngineView>
#endif

using namespace BlackGui;
using namespace BlackCore;
using namespace BlackCore::Data;
using namespace BlackMisc;
using namespace BlackMisc::Network;

CSwiftLauncher::CSwiftLauncher(QWidget *parent) :
    QDialog(parent, CEnableForFramelessWindow::modeToWindowFlags(CEnableForFramelessWindow::WindowNormal)),
    CEnableForFramelessWindow(CEnableForFramelessWindow::WindowFrameless, true, "framelessMainWindow", this),
    ui(new Ui::CSwiftLauncher)
{
    ui->setupUi(this);
    this->setWindowTitle(QCoreApplication::instance()->applicationName() + " " + CProject::versionStringDevBetaInfo());
    this->init();
    connect(ui->pb_CheckForUpdates, &QPushButton::pressed, this, &CSwiftLauncher::ps_loadSetup);
    connect(ui->tb_SwiftCore, &QPushButton::pressed, this, &CSwiftLauncher::ps_startButtonPressed);
    connect(ui->tb_SwiftData, &QPushButton::pressed, this, &CSwiftLauncher::ps_startButtonPressed);
    connect(ui->tb_SwiftGui, &QPushButton::pressed, this, &CSwiftLauncher::ps_startButtonPressed);
    connect(ui->tb_Database, &QPushButton::pressed, this, &CSwiftLauncher::ps_startButtonPressed);
    connect(ui->tb_BackToMain, &QToolButton::pressed, this, &CSwiftLauncher::ps_showMainPage);
    connect(&CSetupReader::instance(), &CSetupReader::versionSynchronized, this, &CSwiftLauncher::ps_loadedSetup);

    new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_L), this, SLOT(ps_showLogPage()));
    this->ui->le_DBusServerPort->setValidator(new QIntValidator(0, 65535, this));

    // default from settings
    this->ui->cb_DBusServerAddress->setCurrentText(this->m_dbusServerAddress.get());
}

CSwiftLauncher::~CSwiftLauncher()
{ }

QString CSwiftLauncher::getCmdLine() const
{
    return toCmdLine(this->m_executable, this->m_executableArgs);
}

CEnableForFramelessWindow::WindowMode CSwiftLauncher::getWindowMode() const
{
    if (ui->rb_WindowFrameless->isChecked()) { return CEnableForFramelessWindow::WindowFrameless; }
    return CEnableForFramelessWindow::WindowNormal;
}

GuiModes::CoreMode CSwiftLauncher::getCoreMode() const
{
    if (ui->rb_SwiftStandalone->isChecked()) { return GuiModes::CoreInGuiProcess; }
    if (ui->rb_SwiftCoreAudio->isChecked()) { return GuiModes::CoreExternalCoreAudio; }
    if (ui->rb_SwiftCoreGuiAudio->isChecked()) { return GuiModes::CoreExternalAudioGui; }

    Q_ASSERT_X(false, Q_FUNC_INFO, "wrong mode");
    return GuiModes::CoreInGuiProcess;
}

QString CSwiftLauncher::getDBusAddress() const
{
    if (this->ui->rb_DBusSession->isChecked()) { return CDBusServer::sessionBusAddress(); }
    if (this->ui->rb_DBusSystem->isChecked()) { return CDBusServer::systemBusAddress(); }
    return CDBusServer::normalizeAddress(
               this->ui->cb_DBusServerAddress->currentText() + ":" +
               this->ui->le_DBusServerPort->text());
}

void CSwiftLauncher::mouseMoveEvent(QMouseEvent *event)
{
    if (!handleMouseMoveEvent(event)) { QDialog::mouseMoveEvent(event); }
}

void CSwiftLauncher::mousePressEvent(QMouseEvent *event)
{
    if (!handleMousePressEvent(event)) { QDialog::mousePressEvent(event); }
}

void CSwiftLauncher::init()
{
    this->ui->lbl_NewVersionUrl->setTextFormat(Qt::RichText);
    this->ui->lbl_NewVersionUrl->setTextInteractionFlags(Qt::TextBrowserInteraction);
    this->ui->lbl_NewVersionUrl->setOpenExternalLinks(true);

    this->ui->wi_NewVersionAvailable->setVisible(false);
    this->ui->wi_NoNewVersion->setVisible(true);

    this->initStyleSheet();
    this->initLogDisplay();
    this->initDBusGui();
    this->initVersion();
}

void CSwiftLauncher::initStyleSheet()
{
    const QString s = CStyleSheetUtility::instance().styles(
    {
        CStyleSheetUtility::fileNameFonts(),
        CStyleSheetUtility::fileNameStandardWidget(),
        CStyleSheetUtility::fileNameSwiftLauncher()
    }
    );
    this->setStyleSheet(s);
}

void CSwiftLauncher::displayLatestNews()
{
#ifndef Q_CC_MINGW
    CUrlList newsUrls(this->m_setup.get().swiftLatestNewsUrls());
    QUrl newUrl(newsUrls.getNextUrl());

    Q_UNUSED(newUrl);
    /** Qt bug
    QWebEngineView *view = new QWebEngineView(this->ui->pg_LatestNews);
    if (view->url() != newUrl)
    {
        view->load(newUrl));
    }
    view->show();
    **/
#endif
}

void CSwiftLauncher::initDBusGui()
{
    this->ui->cb_DBusServerAddress->addItem("127.0.0.1");
    this->ui->cb_DBusServerAddress->addItems(CNetworkUtils::getKnownIpAddresses());
    this->ui->cb_DBusServerAddress->setCurrentIndex(0);

    connect(ui->cb_DBusServerAddress, &QComboBox::currentTextChanged, this, &CSwiftLauncher::ps_dbusServerAddressSelectionChanged);
    connect(ui->rb_DBusP2P, &QRadioButton::clicked, this, &CSwiftLauncher::ps_dbusServerModeSelected);
    connect(ui->rb_DBusSession, &QRadioButton::clicked, this, &CSwiftLauncher::ps_dbusServerModeSelected);
    connect(ui->rb_DBusSystem, &QRadioButton::clicked, this, &CSwiftLauncher::ps_dbusServerModeSelected);
}

void CSwiftLauncher::initVersion()
{
    this->ui->le_CurrentVersion->setText(CProject::versionStringDevBetaInfo());
}

void CSwiftLauncher::initLogDisplay()
{
    CLogHandler::instance()->install(true);
    CLogHandler::instance()->enableConsoleOutput(false); // default disable
    auto logHandler = CLogHandler::instance()->handlerForPattern(
                          CLogPattern().withSeverityAtOrAbove(CStatusMessage::SeverityInfo)
                      );
    logHandler->subscribe(this, &CSwiftLauncher::ps_appendLogMessage);
}

void CSwiftLauncher::startSwiftCore()
{
    QStringList args(
    {
        "--start",
        "--dbus", this->getDBusAddress()
    });

    if (this->ui->rb_SwiftCoreAudio->isChecked())
    {
        args.append("--coreaudio");
    }

    // I set this for debug purpose only
    this->m_executableArgs = args;
    this->m_executable = CProject::swiftCoreExecutableName();
    CLogMessage(this).debug() << this->getCmdLine();

    // start
    QProcess::startDetached(this->m_executable, this->m_executableArgs);
}

void CSwiftLauncher::setSwiftDataExecutable()
{
    m_executable = CProject::swiftDataExecutableName();
    m_executableArgs.clear();
}

bool CSwiftLauncher::setSwiftGuiExecutable()
{
    QString msg;
    if (this->isStandaloneGuiSelected() || this->canConnectDBusServer(msg))
    {

        m_executable = CProject::swiftGuiExecutableName();
        QStringList args
        {
            "--core", GuiModes::coreModeToString(getCoreMode()),
            "--window", CEnableForFramelessWindow::windowModeToString(getWindowMode())
        };
        if (!this->isStandaloneGuiSelected())
        {
            args.append("--dbus");
            args.append(getDBusAddress()); // already converted
        }
        m_executableArgs = args;
        return true;
    }
    else
    {
        m_executable = CProject::swiftGuiExecutableName();
        m_executableArgs.clear();
        static const CLogCategoryList cats(CLogCategoryList(this).join({ CLogCategory::validation() }));
        CStatusMessage m(cats, CStatusMessage::SeverityError,
                         "DBus server for " + getDBusAddress() + " can not be connected: " + msg);
        this->ps_showStatusMessage(m);
        return false;
    }
}

bool CSwiftLauncher::canConnectDBusServer(QString &msg) const
{
    if (this->isStandaloneGuiSelected()) { return true; } // do not mind here
    return CDBusServer::isDBusAvailable(getDBusAddress(), msg);
}

bool CSwiftLauncher::isStandaloneGuiSelected() const
{
    return this->ui->rb_SwiftStandalone->isChecked();
}

QString CSwiftLauncher::toCmdLine(const QString &exe, const QStringList &exeArgs)
{
    if (exeArgs.isEmpty()) { return exe; }
    QString cmd(exe);
    for (const QString &a : exeArgs)
    {
        cmd = cmd.append(" ").append(a);
    }
    return cmd;
}

void CSwiftLauncher::ps_loadSetup()
{
    if (!this->ui->le_LatestVersion->text().isEmpty())
    {
        this->ui->le_LatestVersion->setText("");
        CSetupReader::instance().requestReload();
    }
}

void CSwiftLauncher::ps_loadedSetup(bool success)
{
    if (!success)
    {
        CLogMessage(this).warning("Loading setup or version information failed");
        return;
    }

    CUpdateInfo updateInfo(this->m_updateInfo.get());
    QString latestVersion(updateInfo.getLatestVersion()) ; // need to get this from somewhere
    CUrlList downloadUrls(updateInfo.getDownloadUrls());
    bool newVersionAvailable = CProject::isNewerVersion(latestVersion) && !downloadUrls.isEmpty();
    this->ui->wi_NewVersionAvailable->setVisible(newVersionAvailable);
    this->ui->wi_NoNewVersion->setVisible(!newVersionAvailable);
    this->ui->le_LatestVersion->setText(latestVersion);

    if (!downloadUrls.isEmpty())
    {
        CUrl downloadUrl(downloadUrls.getNextUrl());
        QString urlStr(downloadUrl.toQString());
        QString hl("<a href=\"%1\">%2 %3</a>");
        this->ui->lbl_NewVersionUrl->setText(hl.arg(urlStr).arg(urlStr).arg(latestVersion));
    }

    this->displayLatestNews();
}

void CSwiftLauncher::ps_changedCache()
{
    this->ps_loadedSetup(true);
}

void CSwiftLauncher::ps_startButtonPressed()
{
    QObject *sender = QObject::sender();
    if (sender == this->ui->tb_SwiftGui)
    {
        if (this->setSwiftGuiExecutable())
        {
            this->accept();
        }
    }
    else if (sender == this->ui->tb_SwiftData)
    {
        this->setSwiftDataExecutable();
        this->accept();
    }
    else if (sender == this->ui->tb_SwiftCore)
    {
        if (this->isStandaloneGuiSelected()) { this->ui->rb_SwiftCoreGuiAudio->setChecked(true); }
        this->startSwiftCore();
    }
    else if (sender == this->ui->tb_Database)
    {
        CUrl homePage(this->m_setup.get().dbHomePageUrl());
        QDesktopServices::openUrl(homePage);
    }
}

void CSwiftLauncher::ps_dbusServerAddressSelectionChanged(const QString &currentText)
{
    Q_UNUSED(currentText);
    if (this->isStandaloneGuiSelected())
    {
        this->ui->rb_SwiftCoreGuiAudio->setChecked(true);
    }
    this->ui->rb_DBusP2P->setChecked(true);
}

void CSwiftLauncher::ps_dbusServerModeSelected(bool selected)
{
    if (!selected) { return; }
    if (!this->isStandaloneGuiSelected()) { return; }
    this->ui->rb_SwiftCoreGuiAudio->setChecked(true);
}

void CSwiftLauncher::ps_showStatusMessage(const CStatusMessage &msg)
{
    this->ui->fr_SwiftLauncherMain->showMessage(msg, 5000);
}

void CSwiftLauncher::ps_appendLogMessage(const CStatusMessage &message)
{
    ui->fr_SwiftLauncherLog->appendStatusMessageToList(message);
    if (message.getSeverity() == CStatusMessage::SeverityError)
    {
        this->ps_showStatusMessage(message);
    }
}

void CSwiftLauncher::ps_showMainPage()
{
    this->ui->sw_SwiftLauncher->setCurrentWidget(this->ui->pg_SwiftLauncherMain);
}

void CSwiftLauncher::ps_showLogPage()
{
    this->ui->sw_SwiftLauncher->setCurrentWidget(this->ui->pg_SwiftLauncherLog);
}