#!/bin/sh

#
# remove old directory
#
RemoveOldDir()
{
	rm -rf ${BUILDDIR}/${PKGDIR}
}

#
# check documentation
#
CheckDocumentation()
{
	DOCFILES=
	for FILE in AUTHORS COPYING ChangeLog Changes HACKING LICENSE MAINTAINERS NEWS README THANKS TODO
	do
		if [ -f ${BUILDDIR}/${PKGDIR}/${FILE} ]; then
			echo "Found: ${FILE}"
			DOCFILES="${DOCFILES} ${FILE}"
		fi
	done
}

#
# check gettextize
#
CheckGettexize()
{
	if [ -d ${BUILDDIR}/${PKGDIR}/po ];then
		GETTEXTIZE=yes
	else
		GETTEXTIZE=no
	fi
}

#
# check license
#
CheckLicense()
{
	LICENSE=
	if [ -f ${BUILDDIR}/${PKGDIR}/COPYING ]; then
		MD5SUM=`md5sum ${BUILDDIR}/${PKGDIR}/COPYING`
		LICENSE=`grep ${MD5SUM} @PKGDATADIR@/licences-md5sum.dat | cut -f2`
	elif [ "${PKGTYPE}" = "Perl" ]; then
		LICENSE="Artistic or GPL"
	fi

	if [ "x${LICENSE}" = "x" ]; then
		LICENSE="FIXEME"
	fi
}

#
# check package type
#
CheckPkgType()
{
	if [ -f ${BUILDDIR}/${PKGDIR}/Makefile.PL ]; then
		PKGTYPE=Perl
		NAME="perl-%{pkgname}"
		LINKTARGET=$(dirname `rpm -E '%_sourcedir'`)/`echo ${NAME} | sed -e "s/%{pkgname}/${PKGNAME}/"`
		if [ ! -r ${LINKTARGET} ]; then
			ln -sv ${SOURCEDIR} ${LINKTARGET}
		fi
	elif [ -f ${BUILDDIR}/${PKGDIR}/setup.py ]; then
		PKGTYPE=Python
		NAME=$PKGNAME
	elif [ -f ${BUILDDIR}/${PKGDIR}/configure ]; then
		PKGTYPE=autotoolize
		NAME=$PKGNAME
	else
		echo "Unknown package type." 1>&2
		exit 1
	fi
	echo "パッケージは ${PKGTYPE} パッケージであると認識ました。"

	# replace SOURCE
	if [ ${NAME} = ${PKGNAME} ]; then
		SOURCE=`echo ${SOURCE} | sed -e "s/${PKGNAME}/%{name}/g" -e "s/${PKGVERSION}/%{version}/g"`
	else
		SOURCE=`echo ${SOURCE} | sed -e "s/${PKGNAME}/%{pkgname}/g" -e "s/${PKGVERSION}/%{version}/g"`
	fi
}

#
# check package
#
CheckPackage()
{
	case $SUFFIX in
		.tar.gz)
			PKGDIR=$(basename `tar ztf ${PKGSOURCE} | head -1`)
			RemoveOldDir
			(cd $BUILDDIR && tar zxf ${PKGSOURCE})
			;;
		.tar.bz2)
			PKGDIR=$(basename `tar jtf ${PKGSOURCE} | head -1`)
			RemoveOldDir
			(cd $BUILDDIR && tar jxf ${PKGSOURCE})
			;;
		*.tar.xz)
			PKGDIR=$(basename `tar Jtf ${PKGSOURCE} | head -1`)
			RemoveOldDir
			(cd $BUILDDIR && tar Jxf ${PKGSOURCE})
			;;
		*)
			echo "Unknown format." 1>&2
			exit 1
			;;
	esac
	echo "パッケージを ${BUILDDIR}/${PKGDIR} に展開しました。"
	CheckPkgType
	CheckDocumentation
	CheckGettexize
	CheckLicense
}

#
# check scheme
#
CheckScheme()
{
	case $ARCHIVE in
		http://* | https://* | ftp://*)
			if wget -P $SOURCEDIR -nc $ARCHIVE ;then	# download
				SOURCE=$ARCHIVE
			else
				exit 1			# exit when failed download
			fi
			;;
		*)
			if [ -f $ARCHIVE ];then
				mkdir -p $SOURCEDIR
				echo "move $ARCHIVE to $SOURCEDIR."
				mv $ARCHIVE $SOURCEDIR
				SOURCE=`basename $ARCHIVE`
			else
				echo "$ARCHIVE is not file." 1>&2
				exit 1
			fi
			;;
	esac 
}

#
# check suffix
#
CheckSuffix()
{
	case $ARCHIVE in
		*.tar.gz)
			BASENAME=`basename $ARCHIVE .tar.gz`
			SUFFIX=".tar.gz"
			;;
		*.tar.bz2)
			BASENAME=`basename $ARCHIVE .tar.bz2`
			SUFFIX=".tar.bz2"
			;;
		*.tar.xz)
			BASENAME=`basename $ARCHIVE .tar.xz`
			SUFFIX=".tar.xz"
			;;
		*.zip)
			BASENAME=`basename $ARCHIVE .zip`
			SUFFIX=".zip"
			;;
		*)
			echo "Unknown format." 1>&2
			exit 1
			;;
	esac
}

#
# output basic information
#
OutputBasicInfo()
{
	if [ $NAME != $PKGNAME ];then
		echo "%define	pkgname	$PKGNAME" > $SPECFILE
		echo >> $SPECFILE
	else
		echo > $SPECFILE
	fi

cat >> $SPECFILE << EOL
# Basic Information
Name:		$NAME
Version:	$PKGVERSION
Release:	1%{?_dist_release}
# License は、COPYING などのファイルを参考に適切なものに変更してください。
License:	$LICENSE
# Group は、/usr/share/doc/rpm-`rpm --version | awk '{ print $3 }'`/GROUPS_for_vine.txt を参照して適切なものに変更してください。
Group:		FIXME
Source0:	$SOURCE
BuildRoot:	%{_tmppath}/%{name}-%{version}-root

Vendor:		Project Vine
Distribution:	Vine Linux
Packager:	$TRACKID

Summary:	FIXME
Summary(ja):	ここに日本語で概要を記述してください

# Dependency
# 以下に依存関係を記述してください。

%description
FIXME

%description -l ja
ここに日本語で詳細を記述してください。

EOL
}

#
# Output prep section
#
OutputPrep()
{
	echo '%prep' >> $SPECFILE

	if [ "${PKGNAME}-${PKGVERSION}" != "${PKGDIR}" ]; then
		SETUPOPT=" -n ${PKGDIR}"
	fi
	# setup corresponding to suffix
	case $SUFFIX in
		.tar.gz | .tar.bz2 | .tar.xz)
			echo "%setup -q${SETUPOPT}" >> $SPECFILE
			;;
		.zip)
			echo "%setup -T %{name}-%{version}" >> $SPECFILE
			echo 'unzip -xq %{SOURCE0}' >> $SPECFILE
			;;	
	esac

	echo '' >> $SPECFILE
}

#
# Output build section
#
OutputBuild()
{
	echo '%build' >> $SPECFILE
	case ${PKGTYPE} in
		Perl)
			echo 'make Makefile.PL' >> $SPECFILE
			echo '%{__make}' >> $SPECFILE
			;;
		Python)
			echo '%{__python} setup.py build' >> $SPECFILE
			;;
		autotoolize)
			echo '%configure' >> $SPECFILE
			echo '%{__make} %{?_smp_mflags}' >> $SPECFILE
			;;
	esac

	echo '' >> $SPECFILE
}

#
# Output install section
#
OutputInstall()
{
cat >> $SPECFILE << EOL
%install
%{__rm} -rf \${RPM_BUILD_ROOT}
EOL

	case ${PKGTYPE} in
		Python)
			echo "%{__python} setup.py install --root=${RPM_BUILD_ROOT}" >> $SPECFILE
			;;
		Perl|autotoolize)
			echo "%{__make} install DESTDIR=\${RPM_BUILD_ROOT}" >> $SPECFILE
			;;
	esac

	if [ "${GETTEXTIZE}" = "yes" ]; then
		echo >> $SPECFILE
		echo "%find_lang %{name}" >> $SPECFILE
		echo >> $SPECFILE
	fi

cat >> $SPECFILE << EOL

%clean
%{__rm} -rf \${RPM_BUILD_ROOT}


EOL
}

#
# Output file list
#
OutputFileList()
{
	if [ "${GETTEXTIZE}" = "yes" ]; then
		echo "%files -f %{name}.lang" >> $SPECFILE
	else
		echo "%files" >> $SPECFILE
	fi

# ToDo: check file exists
cat >> $SPECFILE << EOL
%defattr(-,root,root)
EOL

	if [ "x${DOCFILES}" != "x" ]; then
		echo "%doc${DOCFILES}" >> $SPECFILE
	fi

	echo >> $SPECFILE
}

#
# Output ChangeLog
#
OutputChangeLog()
{
cat >> $SPECFILE << EOL
%changelog
* `LANG=C LANGUAGE=C LC_ALL=C date '+%a %b %d %Y'` $FULLNAME <$EMAIL> $PKGVERSION-1
- initial build for Vine Linux
EOL
}

#
# main
#

# check arguments
if [ -z "$*" ]; then
	echo "Usage: `basename $0` source-archive"
	exit 1
fi

ARCHIVE=$1

# load configuration
if [ -f $HOME/.config/vine-rpm-helper/mkrpmspec.conf ]; then
	source $HOME/.config/vine-rpm-helper/mkrpmspec.conf
else
	TRACKID="FIXME"
	FULLNAME="Your Name"
	EMAIL="name@yours.example.com"
fi

CheckSuffix

PKGNAME=`echo $BASENAME | sed -e 's/-[0-9][0-9.]*.*//'`
PKGVERSION=`echo $BASENAME | sed -e 's/^.*-\([0-9][0-9.]*.*\)/\1/'`
SOURCE=`echo $SOURCE | sed -e "s/$PKGNAME/%{name}/g" | sed -e "s/$PKGVERSION/%{version}/g"`
SOURCEDIR=`rpm -E '%_sourcedir' | sed -e "s|%{name}|${PKGNAME}|"`
PKGSOURCE=${SOURCEDIR}/`basename ${ARCHIVE}`
BUILDDIR=`rpm -E '%_builddir'`

CheckScheme

CheckPackage

SPECDIR=`rpm -E '%_specdir'`/`echo ${NAME} | sed -e "s/%{pkgname}/${PKGNAME}/"`
mkdir -p ${SPECDIR}
SPECFILE=${SPECDIR}/`echo ${NAME} | sed -e "s/%{pkgname}/${PKGNAME}/"`-vl.spec

# Backup spec file
if [ -f ${SPECFILE} ]; then
	cp -v ${SPECFILE}{,.`LANG=C LANGUAGE=C LC_ALL=C date '+%Y%m%d%H%M%S'`}
fi

# Output SPEC file.
OutputBasicInfo
OutputPrep
OutputBuild
OutputInstall
OutputFileList
OutputChangeLog

# Output result
echo "made $SPECFILE"