#!/bin/bash
set -e

usage="cpan2deb <module>"

if [ $# -ne 1 ]; then
	echo $usage
	exit 1
fi

cd $HOME
if [ -d locallib ]; then
	rm -rf locallib
fi
if [ -d build ]; then
	rm -rf build
fi

echo "call CPAN ..."
cpan -m $1 1>cpan.out 2>&1 || (echo "cpan failed"; exit 1)

# find build directory
mname=$1
name=lib${mname/::/-}-perl
name=${name,,*}
#builddir_prefix=${mname/::/-}
builddir=$(ls -rtd ~/.cpan/build/*/ |tail -1)

cd $builddir
perl Makefile.PL INSTALL_BASE="~/locallib"
make
make install 1>~/cpan.out 2>&1
echo "Module $1 installed to ~/locallib, output written to cpan.out"
cd

# check version
version=$(perl -M$mname -e 'print $ARGV[0]->VERSION' $mname)

mkdir build
cd build

mkdir -p $name/DEBIAN
cat << EOF >$name/DEBIAN/control
Package: $name
Version: $version
Section: base
Priority: optional
Architecture: all
Depends:
Maintainer: WagnerTech UG <mail@wagnertech.de>
Description: $1 perl modul
EOF

# execute copy script
#mkdir -p $name/usr/share/perl5
#mkdir -p $name/usr/share/man
#. cpan.cp $name 

# move locallib content
mkdir -p $name/usr/local/

for dir in $(ls ~/locallib); do
	case $dir in
	lib) ;;
	share) mv ~/locallib/share $name/usr/local/
	;;
	man) mv ~/locallib/man $name/usr/
	;;
	esac
done

fakeroot dpkg-deb --build $name
cp $name.deb ${name}_$version.deb
echo "${name}_$version.deb erstellt."