package ILMT::HIN::PAN::Root2Infinity;
use strict;
use warnings;
use Dir::Self;
use Data::Dumper;
use ILMT::HIN::PAN::SSFAPI::feature_filter;
use ILMT::HIN::PAN::SSFAPI::shakti_tree_api;

sub process {
    my %args = @_;
    my $input = $args{'data'};
    read_story(\$input);
    my $result;
    my $body;
    my $numBody = get_bodycount();
    for(my($bodyNum)=1;$bodyNum<=$numBody;$bodyNum++)
    {

        $body = get_body($bodyNum,$body);

        # Count the number of Paragraphs in the story
        my($numPara) = get_paracount($body);

        #print STDERR "Paras : $numPara\n";

        # Iterate through paragraphs in the story
        for(my($i)=1;$i<=$numPara;$i++)
        {

            my($para);
            # Read Paragraph
            $para = get_para($i);

            # Count the number of sentences in this paragraph
            my($numSent) = get_sentcount($para);
            # Iterate through sentences in the paragraph
            for(my($j)=1;$j<=$numSent;$j++)
            {

                # Read the sentence which is in SSF format
                my($sent) = get_sent($para,$j);

                root_to_infinity($sent);
            }
        }
    }
    open OUTFILE, '>', \$result  or die $!;
    select(OUTFILE);
    printstory();
    select(STDOUT);
    return $result;
}

sub root_to_infinity
{
        my $sent=$_[0];
        my @children = get_children(0,$sent);

        foreach my $child (@children)
        {
                change_fs($child,$sent);

                my @lc = get_leaves_child($child,$sent);

                foreach my $c (@lc)
                {
                        change_fs($c,$sent);
                }
        }
        return;
}

sub change_fs
{
        my $node = $_[0];
        my $sent = $_[1];

        my $fs = get_field($node, 4,$sent);
        my $arr_fs = read_FS($fs,$sent);
        my @cat = get_values("cat", $arr_fs,$sent);

        if($cat[0] eq "v")
        {
                my @root = get_values("lex", $arr_fs,$sent);

                if($root[0] eq "hE" or $root[0] eq "WA")
                {
                        return;
                }

                $root[0] = $root[0]."nA";

                update_attr_val("lex", \@root, $arr_fs,$sent);
        }

        my $new_fs = make_string($arr_fs,$sent);
        modify_field($node, 4, $new_fs,$sent);
}

1;