#!/usr/bin/perl -w

BEGIN {
    if ( exists $ENV{'CCM_TOOLS_HOME'} && defined $ENV{'CCM_TOOLS_HOME'} ) {
        if ( -d "$ENV{'CCM_TOOLS_HOME'}/lib" ) {
            push @INC, "$ENV{'CCM_TOOLS_HOME'}/lib";
        } else {
            print "$ENV{'CCM_TOOLS_HOME'}/lib was not found\n";
            exit 1;
        }
    } else {
        print "The CCM_TOOLS_HOME environment variable must be set first.\n";
        exit 1;
    }
}

use strict;
use CCM::CommandsUtil;
use CCM::Util;
use CCM::Runtime;
use Cwd;
use File::Spec;
use Getopt::Long;

my $runtime = CCM::Runtime->new();
my $CCM_CONFIG_HOME=CCM::Util::getRequiredEnvVariable('CCM_CONFIG_HOME');
my $JAVA_CMD = $runtime->getJavaCommand();
my $verbose = 0;

GetOptions('verbose+' => \$verbose);

if ( ! -r "project.xml" ) {
    CCM::Util::error("No project.xml file found",2);
}

my $projectxml = &getProjectXML();
my $version = getVersion();
my $dir = getcwd;

if ( defined $version && $version eq "6.1" ) {
    my $sharedlibdir = exists ($ENV{'CCM_CONFIG_LIB_DIR'}) ? $ENV{'CCM_CONFIG_LIB_DIR'} : File::Spec->catdir("usr", "share", "java");
    &checkSchema();
    &runxsl2("combine.xsl", "project.xml", ".tmp.project.xml");
    &runxsl2("build-template.xsl", ".tmp.project.xml", "build.xml");
    &runxsl2("classpath-template.xsl", "project.xml", "ccm.classpath", "-PARAM shared.lib.dist.dir \"$sharedlibdir\" -PARAM base.dir $dir");
    unlink(".tmp.project.xml");
} else {
    if ( ! defined $version ) {
        print "  WARNING: Could not find ccmVersion attribute in ccm:project tag\n";
        print "  of project.xml.  Assuming 5x version.\n";
    }
    &runxsl("build-template-5x.xsl", "build.xml");
}

sub checkSchema {
    print "Validating the schema of project.xml\n";

    if ( $projectxml =~ m/xsi:schemaLocation/ ) {
        my @cp = (File::Spec->catfile($CCM_CONFIG_HOME,"lib","xercesImpl.jar"));
        push @cp, File::Spec->catfile($CCM_CONFIG_HOME,"lib","xml-apis.jar");
        push @cp, File::Spec->catfile($CCM_CONFIG_HOME,"lib","xercesSamples.jar");
        my $cmd = "$JAVA_CMD -cp " . CCM::Util::catpath(@cp) . " dom.Counter -s -f -v project.xml";
        print("$cmd\n") if ($verbose);
        my $output = CCM::CommandsUtil::runAndExitOnError($cmd);
        if ( $output =~ m/Error/ ) {
            print STDERR "error: $output\n";
            exit 5;
        }
    } else {
        print "WARNING: cannot validate project.xml because it is missing the xsi:schemaLocation attribute\n";
    }
}

sub runxsl {
    my $xslfile = shift;
    my $outfile = shift;
    my $params = shift || "";

    print "Writing $outfile\n";
    my $classpath = join (":", File::Spec->catfile($CCM_CONFIG_HOME, "lib", "xalan.jar"), File::Spec->catfile($CCM_CONFIG_HOME,"lib","xerces.jar"));
    my $xsl = File::Spec->catfile ($CCM_CONFIG_HOME,"xsl",$xslfile);
    CCM::CommandsUtil::runAndExitOnError("$JAVA_CMD -cp $classpath org.apache.xalan.xslt.Process -IN project.xml -XSL $xsl -OUT $outfile $params");
}

sub runxsl2 {
    my $xslfile = shift;
    my $infile = shift;
    my $outfile = shift;
    my $params = shift || "";

    print "Writing $outfile\n";
    my $classpath = CCM::Util::catpath(File::Spec->catfile($CCM_CONFIG_HOME, "lib", "xalan.jar"),
                                       File::Spec->catfile($CCM_CONFIG_HOME,"lib","xercesImpl.jar"));
    my $xsl = File::Spec->catfile ($CCM_CONFIG_HOME,"xsl",$xslfile);
    CCM::CommandsUtil::runAndExitOnError("$JAVA_CMD -cp $classpath org.apache.xalan.xslt.Process -IN $infile -XSL $xsl -OUT $outfile $params");
}

sub getVersion {
    my $version;
    if ( $projectxml =~ m/ccmVersion=\"([^\"]+)\"/ ) {
        $version = $1;
    }
    return $version;
}

sub getProjectXML {
    my $projectxml;
    local undef $/;
    if ( ! open (IN, "< project.xml") ) {
        print STDERR "could not open project.xml\n";
        exit 3;
    }
    $projectxml = <IN>;
    return $projectxml;
}