/*
 * This program source code file is part of KICAD, a free EDA CAD application.
 *
 * Copyright (C) 2011 jean-pierre.charras
 * Copyright (C) 1992-2022 Kicad Developers, see AUTHORS.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 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/>.
 */

/* see
 * http://www.desmith.net/NMdS/Electronics/TraceWidth.html
 * http://www.ultracad.com/articles/pcbtemp.pdf
 * for more info
 */

#include <calculator_panels/panel_eseries.h>
#include <pcb_calculator_settings.h>
#include <string_utils.h>
#include <wx/msgdlg.h>

#include <i18n_utility.h>   // For _HKI definition in eseries_help.h
wxString eseries_help =
#include "eseries_help.h"


extern double DoubleFromString( const wxString& TextValue );

PANEL_E_SERIES::PANEL_E_SERIES( wxWindow* parent, wxWindowID id, const wxPoint& pos,
                                const wxSize& size, long style, const wxString& name ) :
        PANEL_E_SERIES_BASE( parent, id, pos, size, style, name )
{
    m_reqResUnits->SetLabel( wxT( "kΩ" ) );
    m_exclude1Units->SetLabel( wxT( "kΩ" ) );
    m_exclude2Units->SetLabel( wxT( "kΩ" ) );

    // show markdown formula explanation in lower help panel
    wxString msg;
    ConvertMarkdown2Html( wxGetTranslation( eseries_help ), msg );
    m_panelESeriesHelp->SetPage( msg );

    // Needed on wxWidgets 3.0 to ensure sizers are correctly set
    GetSizer()->SetSizeHints( this );
}


PANEL_E_SERIES::~PANEL_E_SERIES()
{
}


void PANEL_E_SERIES::ThemeChanged()
{
    // Update the HTML window with the help text
    m_panelESeriesHelp->ThemeChanged();
}


void PANEL_E_SERIES::SaveSettings( PCB_CALCULATOR_SETTINGS* aCfg )
{
}


void PANEL_E_SERIES::LoadSettings( PCB_CALCULATOR_SETTINGS* aCfg )
{
}


void PANEL_E_SERIES::OnCalculateESeries( wxCommandEvent& event )
{
    double   reqr;            // required resistor stored in local copy
    double   error, err3 = 0;
    wxString es, fs;          // error and formula strings

    wxBusyCursor dummy;

    reqr = ( 1000 * DoubleFromString( m_ResRequired->GetValue() ) );
    m_eSeries.SetRequiredValue( reqr ); // keep a local copy of required resistor value
    m_eSeries.NewCalc();     // assume all values available
    /*
     * Exclude itself. For the case, a value from the available series is found as required value,
     * the calculator assumes this value needs a replacement for the reason of being not available.
     * Two further exclude values can be entered to exclude and are skipped as not being available.
     * All values entered in KiloOhms are converted to Ohm for internal calculation
     */
    m_eSeries.Exclude( 1000 * DoubleFromString( m_ResRequired->GetValue()));
    m_eSeries.Exclude( 1000 * DoubleFromString( m_ResExclude1->GetValue()));
    m_eSeries.Exclude( 1000 * DoubleFromString( m_ResExclude2->GetValue()));

    try
    {
        m_eSeries.Calculate();
    }
    catch (std::out_of_range const& exc)
    {
        wxString msg;
        msg << "Internal error: " << exc.what();

        wxMessageBox( msg );
        return;
    }

    fs = m_eSeries.GetResults()[S2R].e_name;               // show 2R solution formula string
    m_ESeries_Sol2R->SetValue( fs );
    error = reqr + m_eSeries.GetResults()[S2R].e_value;    // absolute value of solution
    error = ( reqr / error - 1 ) * 100;                    // error in percent

    if( error )
    {
        if( std::abs( error ) < 0.01 )
            es.Printf( "<%.2f", 0.01 );
        else
            es.Printf( "%+.2f",error);
    }
    else
    {
        es = _( "Exact" );
    }

    m_ESeriesError2R->SetValue( es );                      // anyway show 2R error string

    if( m_eSeries.GetResults()[S3R].e_use )                // if 3R solution available
    {
        err3 = reqr + m_eSeries.GetResults()[S3R].e_value; // calculate the 3R
        err3 = ( reqr / err3 - 1 ) * 100;                  // error in percent

        if( err3 )
        {
            if( std::abs( err3 ) < 0.01 )
                es.Printf( "<%.2f", 0.01 );
            else
                es.Printf( "%+.2f",err3);
        }
        else
        {
            es = _( "Exact" );
        }

        m_ESeriesError3R->SetValue( es );                 // show 3R error string
        fs = m_eSeries.GetResults()[S3R].e_name;
        m_ESeries_Sol3R->SetValue( fs );                  // show 3R formula string
    }
    else                                                  // nothing better than 2R found
    {
        fs = _( "Not worth using" );
        m_ESeries_Sol3R->SetValue( fs );
        m_ESeriesError3R->SetValue( wxEmptyString );
    }

    fs = wxEmptyString;

    if( m_eSeries.GetResults()[S4R].e_use )                 // show 4R solution if available
    {
        fs = m_eSeries.GetResults()[S4R].e_name;

        error = reqr + m_eSeries.GetResults()[S4R].e_value; // absolute value of solution
        error = ( reqr / error - 1 ) * 100;                 // error in percent

        if( error )
            es.Printf( "%+.2f",error );
        else
            es = _( "Exact" );

        m_ESeriesError4R->SetValue( es );
    }
    else                                                   // no 4R solution
    {
        fs = _( "Not worth using" );
        es = wxEmptyString;
        m_ESeriesError4R->SetValue( es );
    }

    m_ESeries_Sol4R->SetValue( fs );
}


void PANEL_E_SERIES::OnESeriesSelection( wxCommandEvent& event )
{
    if( event.GetEventObject() == m_e1 )
        m_eSeries.SetSeries( E1 );
    else if( event.GetEventObject() == m_e3 )
        m_eSeries.SetSeries( E3 );
    else if( event.GetEventObject() == m_e12 )
        m_eSeries.SetSeries( E12 );
    else if( event.GetEventObject() == m_e24 )
        m_eSeries.SetSeries( E24 );
    else
        m_eSeries.SetSeries( E6 );
}