#!/bin/bash

m4_include(lib/common.sh)
m4_include(lib/valid-tags.sh)

# parse command line options
FORCE=
while getopts ':f' flag; do
	case $flag in
		f) FORCE=1 ;;
		:) die "Option requires an argument -- '%s'" "$OPTARG" ;;
		\?) die "Invalid option -- '%s'" "$OPTARG" ;;
	esac
done
shift $(( OPTIND - 1 ))

if ! (( $# )); then
	echo 'Usage: archrelease [-f] <repo>...'
	exit 1
fi

# validate repo is really repo-arch
if [[ -z $FORCE ]]; then
	for tag in "$@"; do
		if ! in_array "$tag" "${_tags[@]}"; then
			die "archrelease: Invalid tag: '%s' (use -f to force release)" "$tag"
		fi
	done
fi

if [[ ! -f PKGBUILD ]]; then
	die 'archrelease: PKGBUILD not found'
fi

trunk=${PWD##*/}

# Normally this should be trunk, but it may be something
# such as 'gnome-unstable'
IFS='/' read -r -d '' -a parts <<< "$PWD"
if [[ "${parts[@]:(-2):1}" == "repos" ]]; then
	die 'archrelease: Should not be in repos dir (try from trunk/)'
fi
unset parts

if [[ $(svn status -q) ]]; then
	die 'archrelease: You have not committed your changes yet!'
fi

pushd .. >/dev/null
IFS=$'\n' read -r -d '' -a known_files < <(svn ls -r HEAD "$trunk")
for file in "${known_files[@]}"; do
	if [[ ${file:(-1)} = '/' ]]; then
		die "archrelease: subdirectories are not supported in package directories!"
	fi
done

# gracefully handle files containing an "@" character
known_files=("${known_files[@]/%/@}")

for tag in "$@"; do
	stat_busy "Copying ${trunk} to ${tag}"

	if [[ -d repos/$tag ]]; then
		declare -a trash
		trash=()
		while read -r file; do
			trash+=("repos/$tag/$file")
		done < <(svn ls "repos/$tag")
		[[ $trash ]] && svn rm -q "${trash[@]/%/@}"
	else
		mkdir -p "repos/$tag"
		svn add --parents -q "repos/$tag"
	fi

	# copy all files at once from trunk to the subdirectory in repos/
	svn copy -q -r HEAD ${known_files[@]/#/$trunk/} "repos/$tag/"

	stat_done
done

stat_busy "Releasing package"
printf -v tag_list ", %s" "$@"; tag_list="${tag_list#, }"
svn commit -q -m "archrelease: copy ${trunk} to $tag_list" || abort
stat_done

popd >/dev/null