#include "nglmainwindow.h"

#include <ngltranslator/ngltranslator.h>
#include <NGLLogger/NGLLoggerBootstrap.h>
#include <QtCore/QLibraryInfo>
#include <QtCore/QTextStream>
#include <QGuiApplication>
#include <QMenu>
#include <QMenuBar>

NGLMainWindow::NGLMainWindow(QWidget *parent)
  : m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger())
  , QMainWindow(parent)
  , m_helpProcess(nullptr)
  , m_versionView(nullptr)
  , m_menuBar(new QMenuBar(this))
{
  m_menu[QLatin1String("File")] = m_menuBar->addMenu(tr("File"));
  m_fileActionBefore = m_menu[QLatin1String("File")]->addSeparator();
  m_menu[QLatin1String("File")]->addAction(QIcon(QLatin1String(":/icons/16x16/application-exit.png")), tr("Quit"), QKeySequence(tr("Ctrl+q")), this, &NGLMainWindow::onExit);

  m_menu[QLatin1String("Help")] = m_menuBar->addMenu(tr("Help"));
  m_menu[QLatin1String("Help")]->addAction(QIcon(QLatin1String(":/icons/16x16/help-contents.png")), tr("Help"), QKeySequence(tr("F1")), this, &NGLMainWindow::onHelpIndex);
  m_menu[QLatin1String("Help")]->addSeparator();
  m_menu[QLatin1String("Help")]->addAction(QIcon(QLatin1String(":/icons/16x16/help-about.png")),
                                           tr("About"), this, &NGLMainWindow::onHelpAbout);

  setWindowIcon(QIcon(QLatin1String(":icons/16x16/rde_16x16.png")));
  setMenuBar(m_menuBar);
}

void NGLMainWindow::onExit()
{
  
  close();
}

void NGLMainWindow::onHelpIndex()
{
  onInvokeHelp(QLatin1String("Index"));
}

void NGLMainWindow::onInvokeHelp(const QString &helpContext)
{
  
  DEBUG_LOG(m_logger) << "onInvokeHelp " << helpContext ;

  if (!m_helpProcess)
  {

    QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
    QString lang = QString::fromLatin1(NGL::translationLocale()) + QLatin1String(".UTF-8");
    env.insert(QLatin1String("LANG"), lang);
    m_helpProcess = new QProcess(this);
    m_helpProcess->setProcessEnvironment(env);
    QStringList args;
    QString fn = QString::fromLatin1(NGL::translationLocale()) + QLatin1String(".qhc");
    args << QLatin1String("-collectionFile")
         << QCoreApplication::applicationDirPath() + QLatin1String("/../help/scms/") + fn
         << QLatin1String("-enableRemoteControl");
    DEBUG_LOG(m_logger) << "Attempting to invoke help at URL: " << args.join(QLatin1String(" ")) ;
    m_helpProcess->start(QLibraryInfo::path(QLibraryInfo::BinariesPath) + QLatin1String("/assistant"), args);
    if (!m_helpProcess->waitForStarted())
    {
      ERROR_LOG(m_logger) << "Could not start help browser (error: "
                          << m_helpProcess->error()
                          << " )" ;
      delete m_helpProcess;
      m_helpProcess = nullptr;
      return;
    }
    connect(m_helpProcess, QOverload<int,QProcess::ExitStatus>::of(&QProcess::finished),
            this,          &NGLMainWindow::onHelpFinished);
  }
  QTextStream str(m_helpProcess);

  str << QLatin1String("activateIdentifier ") + helpContext << QLatin1Char('\0') << QLatin1Char('\n');
  str.flush();
}

void NGLMainWindow::onHelpFinished(int exitCode, QProcess::ExitStatus exitStatus)
{
  if (exitStatus != QProcess::NormalExit)
  {
    WARNING_LOG(m_logger) << "help browser exited with status "
                          << exitStatus << " code "
                          << exitCode << "!" ;
  }
  delete m_helpProcess;
  m_helpProcess = nullptr;
}

void NGLMainWindow::onHelpAbout()
{
  if (m_versionView)
    m_versionView->show();
}

void NGLMainWindow::onVersionViewDeleted()
{
  m_versionView = nullptr;
  setVersionView();
}