#!/appl/perl/bin/perl

use XML::Smart;
use strict;
use warnings;

$ENVFILE="/appl/test_MYENV_Top.xml";

my $ENVxml = XML::Smart->new($ENVFILE) || die ("Could not find file.");

my $env = $ARGV[0];

if ( $ARGV[0] eq "fetch" ) {
        my @envname=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}('[@]','id');
        foreach my $i (@envname) {
                print "$i\n";
}
}
elsif ($ARGV[0] eq "nodesall"){
        my @envname=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}('[@]','id');
        foreach my $i (@envname) {
                my @nodename=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$i")->{NODEDETAIL}('[@]','NODEHOST');
                foreach my $c (@nodename) {
                        print "$c\n";
                }
        }
}
elsif ($ARGV[1] eq "nodewrtseg"){
        my @nodename=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}('[@]','NODEHOST');
        foreach my $i (@nodename) {
                print "$i\n";
        }
}
elsif ($ARGV[1] eq "jvmtype") {
        my $typeCheck=$ARGV[2];
        my @jvmlist;
        my @nodename=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}('[@]','NODEHOST');
        if ($#nodename < 0){
                exit 1;
        }
        foreach my $i (@nodename) {
                my @names=@{$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}->('NODEHOST','eq',"$i")->{JVM}->('jvmtype','eq',"$typeCheck")->{JVMNAME}};
                if ($#names > 0){
                        push(@jvmlist,@names);
                }
        }
        @jvmlist = grep /\S/, @jvmlist;
        if ($#jvmlist < 0){
                print " No $typeCheck type jvm found on $env . Incorrect jvm type passed.\n";
        exit 1;
        }
        foreach my $c (@jvmlist) {
                print "$c\n";
        }
}
elsif ($ARGV[1] eq "jvmwrtnode") {
        my $nodeCheck=$ARGV[2];
        my $typeCheck=$ARGV[3];
        if (defined $nodeCheck && defined $typeCheck){
                my @names=@{$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}->('NODEHOST','eq',"$nodeCheck")->{JVM}->('jvmtype','eq',"$typeCheck")->{JVMNAME}};
                if ($#names < 0){
                        print " No $typeCheck type jvm found on $nodeCheck node. Incorrect type/nodename passed.\n";
                        exit 1;
                }
                @names = grep /\S/, @names;
                foreach my $c (@names) {
                        print "$c\n";
                }
        }
        else
        {
                print " No Node type or nodename passed. Incorrect no. of arguments passed.\n";
                exit 1;
        }
}
elsif ($ARGV[1] eq "nodewrtjvm") {
        my $jvmCheck=$ARGV[2];
        if (defined $jvmCheck){
                my @nodename=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}('[@]','NODEHOST');
                if ($#nodename < 0){
                        exit 1;
                }
               OUTER: foreach my $i (@nodename) {
                        my @jvmtypes=$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}('NODEHOST','eq',"$i")->{JVM}('[@]','jvmtype');
                        foreach my $k (@jvmtypes) {
                                my @names = @{$ENVxml->{OUTMOST}->{MYENVDETAILS}->{ENVDETAILS}->('id','eq',"$env")->{NODEDETAIL}->('NODEHOST','eq',"$i")->{JVM}('jvmtype','eq',"$k")->{JVMNAME}};
                                if ($#names >= 0){
                                        foreach (@names){
                                         if ( $_ eq $jvmCheck ){
                                                print "$i\n";
                                                last OUTER;
                                                }
                                        }
                                }
                        }
                }
        }
}
else{
        print "\nThis parser is argument specific.";
        print "\n1). $0 fetch : To list out environments";
        print "\n2). $0 nodesall : To list all nodes of all environments.";
        print "\n3). $0 <segID> nodewrtseg : to list all nodes of specific environment.";
        print "\n4). $0 <segID> jvmtype <typeofjvm> : to list all nodes having specified jvmtypes of the specific environment.";
        print "\n5). $0 <segID> jvmwrtnode <nodename> <typeofjvm> : to list all jvms present on specific node of specific type of the environment.";
        print "\n6). $0 <segID> nodewrtjvm <jvmname> : to list the node of specific jvm of specified environment.\n";
}