/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
 * Copyright (C) 1992-2012 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * Some code comes from FreePCB.
 *
 * 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 <kiface_i.h>
#include <confirm.h>
#include <pcb_edit_frame.h>
#include <pcbnew_settings.h>
#include <board_commit.h>
#include <zone.h>
#include <zones.h>
#include <zones_functions_for_undo_redo.h>
#include <connectivity/connectivity_data.h>
#include <widgets/progress_reporter.h>
#include <zone_filler.h>


void PCB_EDIT_FRAME::Edit_Zone_Params( ZONE* aZone )
{
    int               dialogResult;
    ZONE_SETTINGS     zoneInfo = GetZoneSettings();
    PICKED_ITEMS_LIST pickedList;    // zones for undo/redo command
    PICKED_ITEMS_LIST deletedList;   // zones that have been deleted when combined
    BOARD_COMMIT      commit( this );

    // Save initial zones configuration, for undo/redo, before adding new zone
    // note the net name and the layer can be changed, so we must save all zones
    deletedList.ClearListAndDeleteItems();
    pickedList.ClearListAndDeleteItems();
    SaveCopyOfZones( pickedList, GetBoard(), -1, UNDEFINED_LAYER );

    if( aZone->GetIsRuleArea() )
    {
        // edit a rule area on a copper layer
        zoneInfo << *aZone;
        dialogResult = InvokeRuleAreaEditor( this, &zoneInfo );
    }
    else if( IsCopperLayer( aZone->GetLayer() ) )
    {
        // edit a zone on a copper layer
        zoneInfo << *aZone;
        dialogResult = InvokeCopperZonesEditor( this, &zoneInfo );
    }
    else
    {
        zoneInfo << *aZone;
        dialogResult = InvokeNonCopperZonesEditor( this, &zoneInfo );
    }

    if( dialogResult == wxID_CANCEL )
    {
        deletedList.ClearListAndDeleteItems();
        pickedList.ClearListAndDeleteItems();
        return;
    }

    SetZoneSettings( zoneInfo );
    OnModify();

    if( dialogResult == ZONE_EXPORT_VALUES )
    {
        UpdateCopyOfZonesList( pickedList, deletedList, GetBoard() );
        commit.Stage( pickedList );
        commit.Push( _( "Modify zone properties" ) );
        pickedList.ClearItemsList(); // s_ItemsListPicker is no more owner of picked items
        return;
    }

    wxBusyCursor dummy;

    // Undraw old zone outlines
    for( ZONE* zone : GetBoard()->Zones() )
        GetCanvas()->GetView()->Update( zone );

    zoneInfo.ExportSetting( *aZone );

    NETINFO_ITEM* net = GetBoard()->FindNet( zoneInfo.m_NetcodeSelection );

    if( net )   // net == NULL should not occur
        aZone->SetNetCode( net->GetNetCode() );

    // Combine zones if possible
    GetBoard()->OnAreaPolygonModified( &deletedList, aZone );

    UpdateCopyOfZonesList( pickedList, deletedList, GetBoard() );

    // Only auto-refill zones here if in user preferences
    if( Settings().m_AutoRefillZones )
    {
        // refill zones with the new properties applied
        std::vector<ZONE*> zones_to_refill;

        for( unsigned i = 0; i < pickedList.GetCount(); ++i )
        {
            ZONE* zone = dyn_cast<ZONE*>( pickedList.GetPickedItem( i ) );

            if( zone == nullptr )
            {
                wxASSERT_MSG( false, "Expected a zone after zone properties edit" );
                continue;
            }

            // aZone won't be filled if the layer set was modified, but it needs to be updated
            if( zone->IsFilled() || zone == aZone )
                zones_to_refill.push_back( zone );
        }

        commit.Stage( pickedList );

        std::lock_guard<KISPINLOCK> lock( GetBoard()->GetConnectivity()->GetLock() );

        if( zones_to_refill.size() )
        {
            ZONE_FILLER filler( GetBoard(), &commit );
            wxString    title =
                    wxString::Format( _( "Refill %d Zones" ), (int) zones_to_refill.size() );
            filler.InstallNewProgressReporter( this, title, 4 );

            if( !filler.Fill( zones_to_refill ) )
            {
                // User has already OK'ed dialog so we're going to go ahead and commit even if the
                // fill was cancelled.
            }
        }
    }

    commit.Push( _( "Modify zone properties" ) );
    GetBoard()->GetConnectivity()->RecalculateRatsnest();

    pickedList.ClearItemsList();  // s_ItemsListPicker is no longer owner of picked items
}


bool BOARD::OnAreaPolygonModified( PICKED_ITEMS_LIST* aModifiedZonesList, ZONE* modified_area )
{
    // clip polygon against itself
    bool modified = NormalizeAreaPolygon( aModifiedZonesList, modified_area );

    // Test for bad areas: all zones must have more than 2 corners:
    // Note: should not happen, but just in case.
    for( ZONE* zone : m_zones )
    {
        if( zone->GetNumCorners() < 3 )
        {
            ITEM_PICKER picker( nullptr, zone, UNDO_REDO::DELETED );
            aModifiedZonesList->PushItem( picker );
            zone->SetFlags( STRUCT_DELETED );
        }
    }

    return modified;
}


bool BOARD::TestZoneIntersection( ZONE* aZone1, ZONE* aZone2 )
{
    // see if areas are on same layer
    if( aZone1->GetLayer() != aZone2->GetLayer() )
        return false;

    SHAPE_POLY_SET* poly1 = aZone1->Outline();
    SHAPE_POLY_SET* poly2 = aZone2->Outline();

    // test bounding rects
    BOX2I b1 = poly1->BBox();
    BOX2I b2 = poly2->BBox();

    if( ! b1.Intersects( b2 ) )
        return false;

    // Now test for intersecting segments
    for( auto segIterator1 = poly1->IterateSegmentsWithHoles(); segIterator1; segIterator1++ )
    {
        // Build segment
        SEG firstSegment = *segIterator1;

        for( auto segIterator2 = poly2->IterateSegmentsWithHoles(); segIterator2; segIterator2++ )
        {
            // Build second segment
            SEG secondSegment = *segIterator2;

            // Check whether the two segments built collide
            if( firstSegment.Collide( secondSegment, 0 ) )
                return true;
        }
    }

    // If a contour is inside another contour, no segments intersects, but the zones
    // can be combined if a corner is inside an outline (only one corner is enough)
    for( auto iter = poly2->IterateWithHoles(); iter; iter++ )
    {
        if( poly1->Contains( *iter ) )
            return true;
    }

    for( auto iter = poly1->IterateWithHoles(); iter; iter++ )
    {
        if( poly2->Contains( *iter ) )
            return true;
    }

    return false;
}