// Filename   : marksheet.cpp
// Last Change: 13-May-2014.
//

#include "common.h"
#include "marksheet.h"

bool IsBlack( int r, int g, int b ) 
{
    if ( r == 0 && g == 0 && b == 0 ) {
        return true;
    }
    return false;
}

wxString GuessHhs( wxString& file ) 
{
    wxString hhs;
    wxImage img( file, wxBITMAP_TYPE_JPEG );
    int sx = 1800;  // start x
    int sy = 315;;  // start y
    int bw = 60;    // block width
    int bh = 50;    // block height
    int area = bw * bh;
    int black = 0;
    int x, y;
    unsigned char r, g, b;

    int max_n;
    float max;
    float bk;
    for ( int c=0; c<10; c++ ) {
        max = 0.0;
        max_n = -1;
        for ( int n=0; n<10; n++ ) {

            for ( x=sx+bw*c; x<sx+bw*(c+1); x++ ) {
                for ( y=sy+bh*n; y<sy+bh*(n+1); y++ ) {
                    r = img.GetRed(   x, y );
                    g = img.GetGreen( x, y );
                    b = img.GetBlue(  x, y );
                    if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
                }
            }

            bk = (float)black / area;
            if ( max < bk ) {
                max = bk;
                max_n = n;
            }
            //wxPuts(wxString::Format(wxT("%d %f"),n,bk));
            black = 0;
        }
        hhs.Append( wxString::Format( wxT("%d"), max_n ) );
    }

    return hhs;
}

bool IsMarksheet( wxString& file, double zmin, double zmax, long lmin, long lmax )
{
    float z;
    long l;

    GetScore( &z, &l, file );
    //wxPuts(wxString::Format(wxT("z = %f, len = %d"),z,l));
    if ( zmin < z && z < zmax
      && lmin < l && l < lmax ) {
        return true;
    }
    return false;
}

void GetScore( float* z, long* l, wxString file )
{
    wxImage img( file, wxBITMAP_TYPE_JPEG );
    int black = 0;
    int x = 2465;
    int h = 3500;
    unsigned char r, g, b;

    for ( int y = 0; y < h; y++ ) {
        r = img.GetRed(   x, y );
        g = img.GetGreen( x, y );
        b = img.GetBlue(  x, y );
        if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
    }
    *z = (float)black / h;

    wxFile f( file );
    *l = f.Length();
}

wxString GetHhsName( wxString& hhsno )
{
    wxString name;

    wxString gszFile = wxGetCwd() + wxFILE_SEP_PATH + wxT("db") + wxFILE_SEP_PATH + wxT("hhs.db");
    wxSQLite3Database hhsdb;
    hhsdb.Open( gszFile );

    wxSQLite3Statement stmt = hhsdb.PrepareStatement("SELECT name FROM hhs_master WHERE hhsno = ?");
    stmt.Bind( 1, hhsno );
    wxSQLite3ResultSet q = stmt.ExecuteQuery();
    if ( !q.IsNull(0) ) {
        while ( q.NextRow() ) {
            name = q.GetString(0);
        }
    }
    stmt.Finalize();
    hhsdb.Close();

    return name;
}

int IsHhsno( wxString& hhsno, wxString& name )
{
	wxRegEx reHhs(wxT("^0[1238][0-9]{8}$"));	// 被保番チェック

    if ( reHhs.Matches( hhsno) ) {
        name = GetHhsName( hhsno );
        if ( name.IsEmpty() ) {  // DBにない
            return 1;
        }
        return 2;
    }
    else {
        return 0;
    }
}

int GetMarksheetVersion( wxString file ) 
{
    wxImage img( file, wxBITMAP_TYPE_JPEG );
    int black = 0;
    int x = 2465;
    int h = 3500;
    unsigned char r, g, b;

    for ( int y=0; y<h; y++ ) {
        r = img.GetRed(   x, y );
        g = img.GetGreen( x, y );
        b = img.GetBlue(  x, y );
        if( IsBlack( (int)r, (int)g, (int)b ) ) black++;
    }
    float z = (float)black / h;

    if ( z > 0.120 ) {
        return 2;   // 0.130 - 0.140
    }
    else {
        return 1;   // 0.099 - 0.110
    }
}