/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015 Chris Pavlina <pavlina.chris@gmail.com>
 * Copyright (C) 2015 Kicad Developers, see change_log.txt for contributors.
 *
 * 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 2
 * 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#include <schframe.h>
#include <sch_component.h>
#include <invoke_sch_dialog.h>
#include <dialog_rescue_each_base.h>
#include <kiface_i.h>
#include <class_library.h>
#include <class_libentry.h>
#include <set>
#include <vector>
#include <boost/foreach.hpp>
#include <lib_cache_rescue.h>
#include <eeschema_config.h>

class DIALOG_RESCUE_EACH: public DIALOG_RESCUE_EACH_BASE
{
public:
    /**
     * Constructor
     * This dialog asks the user which rescuable, cached parts he wants to rescue.
     * Any rejects will be pruned from aCandidates.
     * @param aCaller - the SCH_EDIT_FRAME calling this
     * @param aCandidates - the list of RESCUE_CANDIDATES
     * @param aComponents - a vector of all the components in the schematic
     * @param aAskShowAgain - if true, a "Never Show Again" button will be included
     */
    DIALOG_RESCUE_EACH( SCH_EDIT_FRAME* aParent, std::vector<RESCUE_CANDIDATE>& aCandidates,
            std::vector<SCH_COMPONENT*>& aComponents, bool aAskShowAgain );

    ~DIALOG_RESCUE_EACH();

private:
    SCH_EDIT_FRAME* m_Parent;
    wxConfigBase*   m_Config;
    std::vector<RESCUE_CANDIDATE>* m_Candidates;
    std::vector<SCH_COMPONENT*>* m_Components;
    bool            m_AskShowAgain;

    bool m_insideUpdateEvent;

    bool TransferDataToWindow();
    bool TransferDataFromWindow();
    void PopulateConflictList();
    void PopulateInstanceList();
    void OnConflictSelect( wxDataViewEvent& event );
    void OnNeverShowClick( wxCommandEvent& event );
    void OnCancelClick( wxCommandEvent& event );
    void OnHandleCachePreviewRepaint( wxPaintEvent& aRepaintEvent );
    void OnHandleLibraryPreviewRepaint( wxPaintEvent& aRepaintEvent );
    void OnDialogResize( wxSizeEvent& aSizeEvent );
    void renderPreview( LIB_PART* aComponent, int aUnit, wxPanel* panel );
};


DIALOG_RESCUE_EACH::DIALOG_RESCUE_EACH( SCH_EDIT_FRAME* aParent, std::vector<RESCUE_CANDIDATE>& aCandidates,
        std::vector<SCH_COMPONENT*>& aComponents, bool aAskShowAgain )

    : DIALOG_RESCUE_EACH_BASE( aParent ),
      m_Parent( aParent ),
      m_Candidates( &aCandidates ),
      m_Components( &aComponents ),
      m_AskShowAgain( aAskShowAgain ),
      m_insideUpdateEvent( false )
{
    m_Config = Kiface().KifaceSettings();
}


DIALOG_RESCUE_EACH::~DIALOG_RESCUE_EACH()
{
}


bool DIALOG_RESCUE_EACH::TransferDataToWindow()
{
    if( !wxDialog::TransferDataToWindow() )
        return false;

    m_ListOfConflicts->AppendToggleColumn( _("Rescue symbol") );
    m_ListOfConflicts->AppendTextColumn( _("Symbol name") );
    m_ListOfInstances->AppendTextColumn( _("Reference") );
    m_ListOfInstances->AppendTextColumn( _("Value") );
    PopulateConflictList();
    PopulateInstanceList();

    if( !m_AskShowAgain )
        m_btnNeverShowAgain->Hide();

    GetSizer()->Layout();
    GetSizer()->Fit( this );
    GetSizer()->SetSizeHints( this );
    Centre();

    return true;
}


void DIALOG_RESCUE_EACH::PopulateConflictList()
{
    wxVector<wxVariant> data;
    BOOST_FOREACH( RESCUE_CANDIDATE& each_candidate, *m_Candidates )
    {
        data.clear();
        data.push_back( wxVariant( true ) );
        data.push_back( each_candidate.requested_name );
        m_ListOfConflicts->AppendItem( data );
    }
}


void DIALOG_RESCUE_EACH::PopulateInstanceList()
{
    m_ListOfInstances->DeleteAllItems();

    int row = m_ListOfConflicts->GetSelectedRow();

    if( row == wxNOT_FOUND )
        row = 0;

    RESCUE_CANDIDATE& selected_part = (*m_Candidates)[row];

    wxVector<wxVariant> data;
    BOOST_FOREACH( SCH_COMPONENT* each_component, *m_Components )
    {
        if( each_component->GetPartName() != selected_part.requested_name )
            continue;

        SCH_FIELD* valueField = each_component->GetField( 1 );

        data.clear();
        data.push_back( each_component->GetRef( & m_Parent->GetCurrentSheet() ) );
        data.push_back( valueField ? valueField->GetText() : wxT("") );
        m_ListOfInstances->AppendItem( data );

    }
}


void DIALOG_RESCUE_EACH::OnHandleCachePreviewRepaint( wxPaintEvent& aRepaintEvent )
{
    int row = m_ListOfConflicts->GetSelectedRow();

    if( row == wxNOT_FOUND )
        row = 0;

    RESCUE_CANDIDATE& selected_part = (*m_Candidates)[row];

    renderPreview( selected_part.cache_candidate, 0, m_componentViewOld );
}


void DIALOG_RESCUE_EACH::OnHandleLibraryPreviewRepaint( wxPaintEvent& aRepaintEvent )
{
    int row = m_ListOfConflicts->GetSelectedRow();

    if( row == wxNOT_FOUND )
        row = 0;

    RESCUE_CANDIDATE& selected_part = (*m_Candidates)[row];

    renderPreview( selected_part.lib_candidate, 0, m_componentViewNew );
}


void DIALOG_RESCUE_EACH::OnDialogResize( wxSizeEvent& aSizeEvent )
{
    // Placeholer - I was previously doing some extra reflow here.
    DIALOG_RESCUE_EACH_BASE::OnDialogResize( aSizeEvent );
}


// Render the preview in our m_componentView. If this gets more complicated, we should
// probably have a derived class from wxPanel; but this keeps things local.
// Call it only from a Paint Event, because we are using a wxPaintDC to draw the component
void DIALOG_RESCUE_EACH::renderPreview( LIB_PART* aComponent, int aUnit, wxPanel* aPanel )
{
    wxPaintDC dc( aPanel );
    EDA_COLOR_T bgcolor = m_Parent->GetDrawBgColor();

    dc.SetBackground( bgcolor == BLACK ? *wxBLACK_BRUSH : *wxWHITE_BRUSH );
    dc.Clear();

    if( aComponent == NULL )
        return;

    if( aUnit <= 0 )
        aUnit = 1;

    const wxSize dc_size = dc.GetSize();
    dc.SetDeviceOrigin( dc_size.x / 2, dc_size.y / 2 );

    // Find joint bounding box for everything we are about to draw.
    EDA_RECT bBox = aComponent->GetBoundingBox( aUnit, /* deMorganConvert */ 0 );
    const double xscale = (double) dc_size.x / bBox.GetWidth();
    const double yscale = (double) dc_size.y / bBox.GetHeight();
    const double scale  = std::min( xscale, yscale ) * 0.85;

    dc.SetUserScale( scale, scale );

    wxPoint offset = - bBox.Centre();

    // Avoid rendering when either dimension is zero
    int width, height;

    dc.GetSize( &width, &height );
    if( !width || !height )
        return;

    aComponent->Draw( NULL, &dc, offset, aUnit, /* deMorganConvert */ 0, GR_COPY,
                      UNSPECIFIED_COLOR, DefaultTransform, true, true, false );
}


void DIALOG_RESCUE_EACH::OnConflictSelect( wxDataViewEvent& aEvent )
{
    // wxformbuilder connects this event to the _dialog_, not the data view.
    // Make sure the correct item triggered it, otherwise we trigger recursively
    // and get a stack overflow.
    if( aEvent.GetEventObject() != m_ListOfConflicts )
        return;

    PopulateInstanceList();

    m_componentViewOld->Refresh();
    m_componentViewNew->Refresh();
}


bool DIALOG_RESCUE_EACH::TransferDataFromWindow()
{
    if( !wxDialog::TransferDataFromWindow() )
        return false;

    std::vector<RESCUE_CANDIDATE>::iterator it = m_Candidates->begin();
    for( size_t index = 0; it != m_Candidates->end(); ++index )
    {
        wxVariant val;
        m_ListOfConflicts->GetValue( val, index, 0 );
        bool rescue_part = val.GetBool();

        if( !rescue_part )
            m_Candidates->erase( it );
        else
            ++it;
    }

    return true;
}


void DIALOG_RESCUE_EACH::OnNeverShowClick( wxCommandEvent& aEvent )
{
    wxMessageDialog dlg( m_Parent,
                _(  "Stop showing this tool?\n"
                    "No changes will be made.\n\n"
                    "This setting can be changed from the \"Component Libraries\" dialog,\n"
                    "and the tool can be activated manually from the \"Tools\" menu." ),
            _( "Rescue Components" ), wxYES_NO | wxNO_DEFAULT | wxICON_QUESTION );
    int resp = dlg.ShowModal ();

    if( resp == wxID_YES )
    {
        m_Config->Write( RESCUE_NEVER_SHOW_KEY, true );
        m_Candidates->clear();
        Close();
    }
}


void DIALOG_RESCUE_EACH::OnCancelClick( wxCommandEvent& aEvent )
{
    m_Candidates->clear();
    DIALOG_RESCUE_EACH_BASE::OnCancelClick( aEvent );
}


int InvokeDialogRescueEach( SCH_EDIT_FRAME* aCaller, std::vector<RESCUE_CANDIDATE>& aCandidates,
        std::vector<SCH_COMPONENT*>& aComponents, bool aAskShowAgain )
{
    DIALOG_RESCUE_EACH dlg( aCaller, aCandidates, aComponents, aAskShowAgain );
    return dlg.ShowModal();
}
