#!/usr/bin/perl -w
#
# Convert the output from ovid --deps into a list of modules to run through cpanflute2 to get
# better .spec files, and generate SRPMs from these.

use strict;
use Getopt::Long;

# Need to fix up modules where Ovid parses the name incorrectly
my %badparse=(
	'Crypt-PasswdMD-5' => 'Crypt-PasswdMD5',
	'IPC-Run-3' => 'IPC-Run3',
	'Digest-SHA-1' => 'Digest-SHA1',
	'Digest-MD-4' => 'Digest-MD4',
);

my %extra_buildreqs=(
	'File-Rsync' => [ qw/rsync/ ],
	'MIMETools' => [ qw/perl(Mail::Header) perl(Mail::Internet) perl(Mail::Field) perl(IO::Stringy) perl(File::Temp)/ ],
	'HTML::Scrubber' => [ qw/perl(HTML::Parser) perl(HTML::Tagset)/ ],
#	'Time::Duration' => [ qw/perl(Test::Pod) perl(Test::Pod::Coverage)/ ],
);

my %extra_reqs=(
	'File-Rsync' => [ qw/rsync/ ],
);

my %opts;

GetOptions(\%opts, 'packager=s', 'release=s');

$opts{packager} = 'Richard Siddall <richard.siddall@elirion.net>' if !defined($opts{packager});

# Need to process modules that cause Ovid to crash
#my @extramods= qw/Text::CSV_XS Pod::Simple Crypt::SSLeay/;
#my @extramods= qw/Crypt::SSLeay/;
my @extramods= qw/IPC::ShareLite/;

my $specfiledir="/home/rsiddall/work/redhat/SPECS";
my $srpmdir="/home/rsiddall/work/redhat/SRPMS";

foreach (reverse <STDIN>) {
	next if !defined($_);
	#print $_;
	last if $_ !~ /^([-\w:]+) perl-([-\w\.]+)(-\d+[\w\.]+?)$/;
	#print "$1 = $2\n"
	my ($name, $rpm, $ver) = ($1, $2, $3);
	print "# $name ($rpm - $ver)\n";
	foreach my $cand (keys %badparse) {
		if ($rpm =~ /^$cand/) {
			$rpm =~ s/^$cand/$badparse{$cand}/;
			print "# Fixed up $rpm\n";
			last;
		}
	}
	printcmds($name, "$rpm$ver");
	#print "cpanspec -v --packager 'Unknown <nobody\@example.com>' $name\n";
	#print "echo $rpm\n";
	#print "repoquery perl-$rpm\n";
	#touchsrpms($name, "$rpm$ver");
}

exit;

foreach my $name (@extramods) {
	my $rpm = $name;
	$rpm =~ s/::/-/g;
	my $tarball = `find ~/.cpan/sources -name '$rpm-*' -print | tail -1`;
	#print "$name (Extra!)\n"
	if ($tarball =~ /\/($rpm-.*?)(\.tar\.gz|\.tgz)\s*$/) {
		$rpm = $1;
		printcmds($name, $rpm);
	} else {
		die "Can't find full rpm name for $name in \"$tarball\"\n";
	}
}

sub touchsrpms {
	my ($name, $rpm) = @_;
	my $repofolder ="/var/www/html/repo/sles/10/freeside-1.9/stable/x86_64";
	my $srpmfolder ="/home/rsiddall/work/redhat/SRPMS";
	my @files = glob "$repofolder/perl-$rpm-*.rpm";
	if (! scalar(@files)) {
		print "Can't find $rpm in $repofolder\n";
		@files = glob "$srpmfolder/perl-$rpm-*.src.rpm\n";
		if (scalar(@files)) {
			my $file = pop @files;
			print "touch $file\n";
		} else {
			print STDERR "No corresponding SRPM: $srpmfolder/perl-$rpm-*.src.rpm\n";
			printcmds($name, $rpm);
		}
	}
}

sub printcmds {
	my ($name, $rpm) = @_;

	my $tarball = `find ~/.cpan -name '$rpm.tar.gz' -print`;
	$tarball = `find ~/.cpan -name '$rpm.tgz' -print` if ! $tarball;
	chomp($tarball);
#	my $specfile = "$specfiledir/$name.spec";
	my $rpmname = $rpm;
	$rpmname = $1 if $rpm =~ /^(?:.*\/)?(.*)-(?:v\.?)?([^-]+)$/;
	my $specfile = "$specfiledir/perl-$rpmname.spec";
	$specfile =~ s/::/-/g;
	# Work out which version of the SRPM we're going to generate.
	my $rel;
	if (!defined($opts{release})) {
		for ($rel = 1; ; $rel++) {
			my $srpm = "$srpmdir/perl-$rpm-$rel.src.rpm";
			last if ! -e $srpm;
			print "# File exists: $srpm\n";
		}
	} else {
		$rel = $opts{release};
	}
	my $fluteopts = "";
	foreach my $cand (keys %extra_buildreqs) {
		if ($rpm =~ /^$cand/) {
			$fluteopts .= join "", map { "--buildrequires $_ " } @{$extra_buildreqs{$cand}};
			last;
		}
	}
	foreach my $cand (keys %extra_reqs) {
		if ($rpm =~ /^$cand/) {
			$fluteopts .= join "", map { "--requires $_ " } @{$extra_reqs{$cand}};
			last;
		}
	}
	print "cpanflute2 --just-spec --noperlreqs --email='$opts{packager}' --release=$rel $fluteopts $tarball > $specfile;\n";
	# Should fix up the .spec file
	print "perl -pi -e 's/perl\\(perl\\)/perl/g' $specfile;\n";
	my $tarballdir = `dirname $tarball` or die "Can't find tarball for $name: $tarball\n";
	chomp($tarballdir);
	print "rpmbuild -bs --nodeps --define '_sourcedir $tarballdir' --define '_srcrpmdir $srpmdir' $specfile\n";
	print "# Generates: $srpmdir/perl-$rpm-$rel.src.rpm\n";
}