#!/bin/bash

_cat()
{
	sed 's/^	*|//'
}

cfg_section()
{
	ini_section "$inifile" $@
}

cfg_value()
{
	ini_value "$inifile" $@
}

cfg_escape()
{
	sed 's/\\/\\\\/g; s/\$/\\$/g; s/`/\\`/g'
}

# unneeded but kept, because it might come in handy in the future
have_pkg()
{
	echo "$subpackages" | grep -q "\(^[ 	]*\|[	 ]\+\)$1\([	]\+\|$\)"
	return $?
}

subpackage_description()
{
	case $1 in
	run)
		echo "Runtime files"
		;;
	devel)
		echo "Development files"
		;;
	esac
}

os_cascade()
{
	# might want to run python3 path/to/jw-projects.py --os=suse-tumbleweed os-cascade
	# or turn this into a python script and use jw-projects.py as a module.

	if [ "$DISTRIBUTION" ]; then
		echo os linux $DISTRIBUTION | sed 's/\([^-]\+\)-\([^-]\+\)/\1 \1-\2/g'
	else
		echo os linux
	fi
}

# -- here we go

echo "== running $0" "$@" >&2

export LANG=POSIX
dir=`dirname $0`
inifile="$1"
. $dir/ini-tools.sh

subpackages=`cfg_value global.subpackages`
license=`cfg_value global.license`
[ "$license" ] || license="janware GmbH proprietary license"
vendor=`cfg_value global.vendor`
[ "$vendor" ] || vendor="janware GmbH"
url=`cfg_value global.url`
[ "$url" ] || url="https://janware.com"

_cat <<- EOT
	|echo "%define debug_package %{nil}"
	|# ---------------------------------------
	|echo "Name: \$NAME"
	|echo "Summary: `cfg_value summary`"
	|echo "Version: \$VERSION"
	|echo "Release: \$RELEASE"
	|echo "License: $license"
	|echo "Group: System/Libraries"
	|[ -n "\$SOURCE" ] && echo "Source: \$SOURCE"
	|echo "Vendor: $vendor"
	|echo "URL: $url"
	|echo "BuildRoot: /var/tmp/%{name}-buildroot"
	|echo "Distribution: jw / openSUSE Tumbleweed"
	|echo ""
	|echo "%description"
	|echo "`cfg_value description`"
	|echo ""
	|# ---------------------------------------
	|echo "%prep"
	|echo "%setup -q -n \$NAME-\$V"
	|echo ""
	|echo "%build"
	|echo 'pwd'
	|echo 'make config'
	|echo 'make'
	|echo ""
	|echo "%install"
	|echo 'rm -rf \$RPM_BUILD_ROOT'
	|echo "export ENV_PREFIX=\\\$RPM_BUILD_ROOT"
	|echo "export INSTALL_LOG=\$INSTALL_LOG"
	|echo "mkdir -p \`dirname \$INSTALL_LOG\`"
	|echo "> \$INSTALL_LOG"
	|echo "make install"
	|echo "export PATH=$JWB_SCRIPT_DIR:\\\$PATH"
	|echo "/bin/bash pkg.sh milk-install-log -p \\\$ENV_PREFIX -n \$NAME -t rpm -s \\"$subpackages\\" \$INSTALL_LOG \`dirname \$INSTALL_LOG\`"
	|echo "exit 0" # <- Cut short CentOS magic appended to install scriptlet, which would generate .pyo files and other cruft.
EOT

for p in $subpackages; do

	P=${p^^}

	_cat <<- EOT
		|echo ""
		|echo "# --------------------------------------- subpackage $p"
		|echo ""
		|echo "%package -n \$NAME-$p"
		|echo "Summary: `cfg_value summary`"
		|echo "Group: `cfg_value global.group`"
		|[ "\$REQUIRES_$P" ] && echo "Requires: \$REQUIRES_$P"
		|[ "\$CONFLICTS_$P" ] && echo "Conflicts: \$CONFLICTS_$P"
		|[ "\$PROVIDES_$P" ] && echo "Provides: \$PROVIDES_$P"
		|echo ""
	EOT

	descr=`subpackage_description $p`
	if [ "$descr" ]; then
		_cat <<- EOT
		|echo ""
		|echo "%description -n \$NAME-$p"
		|echo "$descr"
		EOT
	fi

	for stage in pre preun post postun; do
		echo "== processing stage $stage: cfg_section pkg.$p.$stage" >&2
		out=""
		#for os in '' `os_cascade | sed 's/\(^\| \)/ ./g'`; do
		for os in '' `os_cascade`; do
			sec=pkg.$p.$stage
			if [ "$os" ]; then
				sec="$sec.$os"
				head="\n# --- $os\n"
			else
				head=""
			fi
			cfg_section $sec | grep -q . || continue
			out="$out$head`cfg_section $sec`"
		done
		if [ "$out" ]; then
			echo -e "$out" >&2
			_cat <<- EOT
			|echo ""
			|echo "%$stage -n \$NAME-$p"
			EOT
			echo "cat << EOT"
			echo -e "$out" | cfg_escape
			echo "EOT"
		fi
	done

	_cat <<- EOT
	|echo ""
	|echo "%files -n \$NAME-$p -f \$INSTALL_LOG.\$NAME-$p"
	|echo '%defattr (-, root, root)'
	EOT
done