/*
    Scan Tailor - Interactive post-processing tool for scanned pages.
    Copyright (C) 2007-2009  Joseph Artsimovich <joseph_a@mail.ru>

    This program 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 3 of the License, or
    (at your option) any later version.

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "ProjectCreationContext.h"

#include "ProjectFilesDialog.h"
#include "FixDpiDialog.h"
#include "ImageFileInfo.h"
#include <QString>
#include <Qt>
#include <algorithm>
#include <assert.h>

ProjectCreationContext::ProjectCreationContext(QWidget* parent)
    :   m_layoutDirection(Qt::LeftToRight),
        m_pParent(parent)
{
    showProjectFilesDialog();
}

ProjectCreationContext::~ProjectCreationContext()
{
    // Deleting a null pointer is OK.
    delete m_ptrProjectFilesDialog;
    delete m_ptrFixDpiDialog;
}

namespace
{

template<typename T>
bool allDpisOK(T const& container)
{
    return std::find_if(
               container.begin(), container.end(),
                [](const ImageFileInfo& a) { return !a.isDpiOK(); }
//               !bind(&ImageFileInfo::isDpiOK, _1)
           ) == container.end();
}

} // anonymous namespace

void
ProjectCreationContext::projectFilesSubmitted()
{
    m_files = m_ptrProjectFilesDialog->inProjectFiles();
    m_outDir = m_ptrProjectFilesDialog->outputDirectory();
    m_inputDir = m_ptrProjectFilesDialog->inputDirectory();
    m_layoutDirection = Qt::LeftToRight;
    if (m_ptrProjectFilesDialog->isRtlLayout()) {
        m_layoutDirection = Qt::RightToLeft;
    }

    if (!m_ptrProjectFilesDialog->isDpiFixingForced() && allDpisOK(m_files)) {
        emit done(this);
    } else {
        showFixDpiDialog();
    }
}

void
ProjectCreationContext::projectFilesDialogDestroyed()
{
    if (!m_ptrFixDpiDialog) {
        deleteLater();
    }
}

void
ProjectCreationContext::fixedDpiSubmitted()
{
    m_files = m_ptrFixDpiDialog->files();
    emit done(this);
}

void
ProjectCreationContext::fixDpiDialogDestroyed()
{
    deleteLater();
}

void
ProjectCreationContext::showProjectFilesDialog()
{
    assert(!m_ptrProjectFilesDialog);
    m_ptrProjectFilesDialog = new ProjectFilesDialog(m_pParent);
    m_ptrProjectFilesDialog->setAttribute(Qt::WA_DeleteOnClose);
    m_ptrProjectFilesDialog->setAttribute(Qt::WA_QuitOnClose, false);
    if (m_pParent) {
        m_ptrProjectFilesDialog->setWindowModality(Qt::WindowModal);
    }
    connect(
        m_ptrProjectFilesDialog, SIGNAL(accepted()),
        this, SLOT(projectFilesSubmitted())
    );
    connect(
        m_ptrProjectFilesDialog, SIGNAL(destroyed(QObject*)),
        this, SLOT(projectFilesDialogDestroyed())
    );
    m_ptrProjectFilesDialog->show();
}

void
ProjectCreationContext::showFixDpiDialog()
{
    assert(!m_ptrFixDpiDialog);
    m_ptrFixDpiDialog = new FixDpiDialog(m_files, m_pParent);
    m_ptrFixDpiDialog->setAttribute(Qt::WA_DeleteOnClose);
    m_ptrFixDpiDialog->setAttribute(Qt::WA_QuitOnClose, false);
    if (m_pParent) {
        m_ptrFixDpiDialog->setWindowModality(Qt::WindowModal);
    }
    connect(
        m_ptrFixDpiDialog, SIGNAL(accepted()),
        this, SLOT(fixedDpiSubmitted())
    );
    connect(
        m_ptrFixDpiDialog, SIGNAL(destroyed(QObject*)),
        this, SLOT(fixDpiDialogDestroyed())
    );
    m_ptrFixDpiDialog->show();
}

