#
# Copyright (c) 2004-2007 - Consultas, PKG.fr
#
# This file is part of A2P.
#
# A2P 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.
#
# A2P 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 A2P; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# $Id: IPS.pm 3 2007-10-18 16:20:19Z root $
#
# Class to export Include Page Segment members
#
# cf ref #1, p. 99
#

package AFPDS::MODCA::IPS ;

use strict ;
use A2P::Globals ;
use A2P::Syslog ;
use AFPDS::MODCA::Common ;

BEGIN {
    our $VERSION = sprintf "%s", q$Rev: 1007 $ =~ /([0-9.]+)\s+/ ;
}
our $VERSION ;
our @ISA = ("AFPDS::MODCA");
our $IDENTS ;

sub _ID { 0xD3AF5F }

sub new {
    my $class = shift ;
    &Debug("new " . __PACKAGE__ . " v$VERSION object");

    my $self = {
        FLUX     => 0,        # Associated flux
        IDENT    => _ID,      # MO:DCA identity
        FLAG     => 0,        # MO:DCA flags
        RESERVED => 0,        # MO:DCA reserved
        LONG     => 0,        # MO:DCA buffer length
        BUFFER   => ''        # MO:DCA content buffer
    };

    return bless $self , $class ;
}

sub validate {
    my $self = shift ;

    &UPSTAT('GETSEGMENT');
    &Debug("Found IPS as LOGO");

    # Check buffer size
    return ( 251, "Found too short IPS object (" . $self->{LONG} . "<14)" )
        if ( $self->{LONG} < 14 );

    &Warn("Found IPS Field value with triplets (" . $self->{LONG} . ">14)")
        if ( $self->{LONG} > 14 );

    # Check FLUX is a Flux object
    return ( 251, "IPS needs to be used with Flux object" )
        unless ( ref($self->{FLUX}) =~ /^AFPDS::Flux$/ );

    return () ;
}

sub create {
    my $self = shift ;

    my $flux = $self->{FLUX} ;
    my ( $landscape, $rotation ) = $flux->orientations ;

    my $logoline = '' ;
    if ( $landscape != $rotation ) {
        $flux->updateFlux( { ROTSEGMENT=> $landscape } );
        $logoline = "\\def\\ROTSEGMENT{" . $landscape . "}%\n" ;
    }

    # Set logoname
    my $logoname = substr( $self->{BUFFER}, 0, 8 );
    $logoname = $self->convert( $logoname );
    return ( 252, "Invalid logoname found" ) unless $logoname ;
    $logoname = uc( $logoname );

    &UPSTAT('USESEGMENT_' . $logoname);

    # Set segname for TeX/LaTeX coding
    my $segname = $logoname ;
    $segname =~ y/0-9/a-j/ ;

    my $logox = $self->get_from_buffer(  8, 3 );
    my $logoy = $self->get_from_buffer( 11, 3 );

    my ( $xtex, $ytex ) = ( '', '' );
    unless ( $logox == 0xFFFFFF ) {
        # This is a signed number
        $logox -= 0x1000000 if ( $logox > 0x7FFFFF );

        # Check and set X off-set
        return ( 222, "Found bad IPS X-value ($logox)" )
            if ( $logox < -32768 or $logox > 32767 );

        # X off-set as TeX code
        $xtex = sprintf( "%d\\Xunit" , $logox ) ;
    }

    unless ( $logoy == 0xFFFFFF ) {
        # This is a signed number
        $logoy -= 0x1000000 if ( $logoy > 0x7FFFFF );

        # Check and set Y off-set
        return ( 223, "Found bad IPS Y-value ($logoy)" )
            if ( $logoy < -32768 or $logoy > 32767 );

        # Y off-set as TeX code
        $ytex = sprintf( "%d\\Yunit" , $logoy ) ;
    }

    # If LOGOPATH is not used, then SEGMENT would be find in TeX env
    my $segpath = $LOGOPATH ? $LOGOPATH . "/" : "" ;

    # Add SEGMENT to logo list
    $flux->addsegpath( $segpath, $logoname );

    # Keep information on this valid segment after adding its path
    $flux->updateFlux( { LOGOs => { $logoname => 1 } } );

    # Finish Tex/LaTeX code and add it to logo list
    $logoline .= "\\SEGMENT{" . $xtex . "}{" . $ytex  . "}{\\" ;
    $logoline .= "Rotated" if $landscape ;
    $logoline .= "Segment" . $segname . "}% Logo: $logoname @ $logox x $logoy" ;
    $flux->newlogo( $logoline );

    unless ($NO_SYSLOG_DEBUG) {
        # Just to protect '%' from printf interpretation in syslog...
        $logoline =~ s/%/%%/g ;
        &Debug("new logo line '$logoline'");
    }

    return () ;
}

&Debug("Module " . __PACKAGE__ . " v$VERSION loaded");

( $IDENTS->{&_ID} ) = __PACKAGE__ =~ /(\w+)$/ ;