#!/usr/bin/perl -w
#
# Base subroutines for the Project-Builder project
#
# $Id$
#

use strict;
use lib qw (lib);
use File::Basename;
use File::Path;
use File::Temp qw /tempdir/;
use AppConfig qw(ARGCOUNT_HASH);
use Data::Dumper;

$ENV{'PBETC'} = "$ENV{'HOME'}/.pbrc";

sub pb_env_init {

my $proj=shift;
my $ver;
my $tag;

#
# Check project name
# Could be with env var PBPROJ
# or option -p
# if not define take the first in conf file
#
if ((defined $ENV{'PBPROJ'}) &&
	(not (defined $proj))) {
	$proj = $ENV{'PBPROJ'};
}

#
# We get the pbrc file for that project 
# and use its content
#
my $pbrc = pb_conf_read("$ENV{'PBETC'}","pbrc");
print "DEBUG pbrc: ".Dumper($pbrc)."\n" if ($debug >= 1);

%pbrc = %$pbrc;
if (not defined $proj) {
	# Take the first as the default project
	$proj = (keys %pbrc)[0];
	print $LOG "Using $proj as default project as none has been specified\n" if (($debug >= 0) and (defined $proj));
}
die "No project defined - use env var PBPROJ or -p proj" if (not (defined $proj));

#
# Set delivery directory
#
my $topdir=dirname($pbrc{$proj});
chdir $topdir || die "Unable to change directory to $topdir";
$ENV{'PBDESTDIR'}=$topdir."/delivery";

#
# Use project configuration file if needed
#
if (not defined $ENV{'PBROOT'}) {
	if (-f $pbrc{$proj}) {
		my $pbroot = pb_conf_read($pbrc{$proj},"pbroot");
		my %pbroot = %$pbroot;
		# There is normaly only one line in it
		$ENV{'PBROOT'} = (values %$pbroot)[0] if (defined $pbroot); 
		print $LOG "Using $ENV{'PBROOT'} as default pbroot from $pbrc{$proj}\n" if (($debug >= 0) and (defined $ENV{'PBROOT'}));
	}
	die "No pbroot defined - use env var PBROOT or -r pbroot " if (not defined $ENV{'PBROOT'});
}

#
# Check pb conf compliance
#
$ENV{'PBCONF'} = "$ENV{'PBROOT'}/pbconf";
die "Project $proj not Project-Builder compliant. Please populate $ENV{'PBCONF'}" if ( not -d "$ENV{'PBCONF'}");

my %version = ();
my %confparam = ();

if (-f "$ENV{'PBCONF'}/$proj.pb") {
	# main parameter confparam (mandatory)
	# List of pkg to build by default (mandatory)
	# List of additional pkg to build when all is called (optional)
	# Valid version names (optional)
	# List of files to filter (optional)
	my $ptr = pb_conf_read("$ENV{'PBCONF'}/$proj.pb","confparam","defpkgdir","extpkgdir","version","filteredfiles");
	my ($confparam, $defpkgdir, $extpkgdir, $version, $filteredfiles) = @$ptr;
	print "DEBUG: confparam: ".Dumper($confparam)."\n" if ($debug >= 1);
	print "DEBUG: defpkgdir: ".Dumper($defpkgdir)."\n" if ($debug >= 1);
	print "DEBUG: extpkgdir: ".Dumper($extpkgdir)."\n" if ($debug >= 1);
	print "DEBUG: version: ".Dumper($version)."\n" if ($debug >= 1);
	print "DEBUG: filteredfiles: ".Dumper($filteredfiles)."\n" if ($debug >= 1);
	die "Unable to find confparam in $ENV{'PBCONF'}/$proj.pb" if (not defined $confparam);
	die "Unable to find defpkgdir in $ENV{'PBCONF'}/$proj.pb" if (not defined $defpkgdir);
	%confparam = %$confparam;
	# Global
	%defpkgdir = %$defpkgdir;
	# Global
	%extpkgdir = ();
	%extpkgdir = %$defpkgdir if (defined $defpkgdir);
	%version = ();
	%version = %$version if (defined $version);
	# Global
	%filteredfiles = ();
	%filteredfiles = %$filteredfiles if (defined $filteredfiles);
} else {
	die "Unable to open $ENV{'PBCONF'}/$proj.pb";
}

#
# Export content if needed
#
if (defined $confparam{"cvsroot"}) {
	$ENV{'CVSROOT'} = $confparam{"cvsroot"}; 
}

#
# Set temp directory
#
if (not defined $ENV{'TMPDIR'}) {
	$ENV{'TMPDIR'}="/tmp";
}
$ENV{'PBTMP'} = tempdir( "pb.XXXXXXXXXX", DIR => $ENV{'TMPDIR'}, CLEANUP => 1 );

#
# Get global VERSION
#
open(VER, "$ENV{'PBCONF'}/VERSION") || die "Unable to open $ENV{'PBCONF'}/VERSION: $?";
$ver = <VER>;
chomp($ver);
#print Dumper(%version);
die "Invalid version name $ver in $ENV{'PBROOT'}/VERSION" if ($ver !~ /[0-9.]+/) && (not exists $version{$ver});
$ENV{'PBVER'}=$ver;
close(VER);

#
# Get global TAG
#
open(TAG, "$ENV{'PBCONF'}/TAG") || die "Unable to open $ENV{'PBCONF'}/TAG: $?";
$tag = <TAG>;
chomp($tag);
die "Invalid tag name $tag in $ENV{'PBROOT'}/TAG" if ($tag !~ /[0-9]+/);
$ENV{'PBTAG'}=$tag;
close(TAG);

#
# Removes all directory existing below the delivery dir 
# as they are temp dir only
# Files stay and have to be cleaned up manually
#
if (-d $ENV{'PBDESTDIR'}) {
	opendir(DIR,$ENV{'PBDESTDIR'}) || die "Unable to open directory $ENV{'PBDESTDIR'}: $!";
	foreach my $d (readdir(DIR)) {
		next if ($d =~ /^\./);
		next if (-f "$ENV{'PBDESTDIR'}/$d");
		pb_rm_rf("$ENV{'PBDESTDIR'}/$d") if (-d "$ENV{'PBDESTDIR'}/$d");
	}
	closedir(DIR);
}
if (! -d "$ENV{'PBDESTDIR'}") {
	pb_mkdir_p($ENV{'PBDESTDIR'}) || die "Unable to recursively create $ENV{'PBDESTDIR'}";
}

#
# Set build directory
#
$ENV{'PBBUILDDIR'}=$topdir."/build";
pb_rm_rf($ENV{'PBBUILDDIR'}) if (-d "$ENV{'PBBUILDDIR'}");
pb_mkdir_p($ENV{'PBBUILDDIR'}) || die "Unable to recursively create $ENV{'PBBUILDDIR'}";

umask 0022;
return($proj);
}

# Internal mkdir -p function
sub pb_mkdir_p {
my @dir = @_;
my $ret = mkpath(@dir, 0, 0755);
return($ret);
}

# Internal rm -rf function
sub pb_rm_rf {
my @dir = @_;
my $ret = rmtree(@dir, 0, 0);
return($ret);
}

# Internal system function
sub pb_system {

my $cmd=shift;
my $cmt=shift || $cmd;

print $LOG "$cmt... ";
system("$cmd");
if ($? == -1) {
	print $LOG "failed to execute: $!\n" if ($debug >= 0);
} elsif ($? & 127) {
	printf $LOG "child died with signal %d, %s coredump\n", ($? & 127),  ($? & 128) ? 'with' : 'without' if ($debug >= 0);
} else {
	print $LOG "OK\n" if ($debug >= 0);
}
}

# Function which returns a pointer on a hash
# corresponding to a declaration (arg2) in a conf file (arg1)
sub pb_conf_read {

my $conffile = shift;
my @param = @_;
my $trace;
my @ptr;

if ($debug > 0) {
	$trace = 1;
} else {
	$trace = 0;
}


my $config = AppConfig->new({
							# Auto Create variables mentioned in Conf file
							CREATE => 1,
							DEBUG => $trace,
							GLOBAL => {
								# Each conf item is a hash
								ARGCOUNT => ARGCOUNT_HASH,
							},
						});
$config->file($conffile);
for my $param (@param) {
	push @ptr,$config->get($param);
}
if ($#param == 0) {
	print "DEBUG: param: ".Dumper($ptr[0])."\n" if ($debug >= 1);
	return($ptr[0]);
} else {
	my $ptr = \@ptr;
	print "DEBUG: params: ".Dumper($ptr)."\n" if ($debug >= 1);
	return($ptr);
}
}

sub pb_conf_init {

my $conffile = shift;
my $ptr;
my $trace;

if ($debug > 0) {
	$trace = 1;
} else {
	$trace = 0;
}

my $config = AppConfig->new({
							# Auto Create variables mentioned in Conf file
							DEBUG => $trace,
							CREATE => '1',
							GLOBAL => {
								# Each conf item is a hash
								ARGCOUNT => ARGCOUNT_HASH,
							},
						});
$config->file($conffile);

# Root of the project to build
# needs at least 2 levels of dir as in the upper 
# other dirs will be created and used 

}

# Setup environment for CMS system
sub pb_cms_init {

my $proj = shift || undef;
my $ret;

my $cms = pb_conf_read("$ENV{'PBETC'}","cms");
die "No CMS defined for $proj" if (not defined $cms);
my %cms = %$cms;
die "No CMS defined for $proj" if (not defined $cms{$proj});

if ($cms{$proj} eq "svn") {
	$ENV{'PBREVISION'}=`(cd "$ENV{'PBROOT'}" ; svnversion .)`;
	chomp($ENV{'PBREVISION'});
	$ENV{'PBCMSLOG'}="svn log";
	$ENV{'PBCMSLOGFILE'}="svn.log";
	$ENV{'PBCMSEXP'}="svn export";
} elsif ($cms{$proj} eq "cvs") {
	$ENV{'PBREVISION'}=`(cd "$ENV{'PBROOT'}" ; cvs rannotate  -f . 2>&1 | awk '{print \$1}' | grep -E '^[0-9]' | cut -d. -f2 |sort -nu | tail -1)`;
	chomp($ENV{'PBREVISION'});
	$ENV{'PBCMSLOG'}="cvs log";
	$ENV{'PBCMSLOGFILE'}="cvs.log";
	$ENV{'PBCMSEXP'}="cvs export"
} else {
	die "CMS $cms{$proj} unknown";
}
}

1;