#! /bin/bash -efu

debug() {
	if [ -n "$DEBUG" ]; then
		echo "$*" >&2
	fi
}

msg_usage() {
	cat <<_EOF_
Run family test.

Usage:
$PROG <options>

Options:
-h, --help		Display this help and exit
-v, --verbose		Turn on debug
-l, --lang=LANG		Test LANG language coverage (default: en)
-f, --family=FILE	Set a family name supposed to be assigned for alias.
-g, --alias=STR		Set an alias name. (default: sans-serif)
-a, --artifactsdir=DIR	Set environment dir to store artifacts
-k, --package=NAME	Set a package name for fonts.
_EOF_
}

PROG="${PROG:-${0##*/}}"
DEBUG="${DEBUG:-}"
OPT_LANG="${OPT_LANG:-en}"
OPT_FAMILY="${OPT_FAMILY:-}"
OPT_ARTIFACTS_DIR="${OPT_ARTIFACTS_DIR:-}"
OPT_ALIAS="${OPT_ALIAS:-sans-serif}"
OPT_PACKAGE="${OPT_PACKAGE:-}"

opt=$(getopt -n "$0" --options "hvl:f:t:a:g:k:" --longoptions "help,verbose,lang:,family:,test:,artifactsdir:,alias:,package:" -- "$@")
eval set -- "$opt"
while [[ $# -gt 0 ]]; do
	case "$1" in
	-k|--package)
		OPT_PACKAGE="$2"
		shift 2
		;;
	-g|--alias)
		OPT_ALIAS="$2"
		shift 2
		;;
	-a|--artifactsdir)
		OPT_ARTIFACTS_DIR="$2"
		shift 2
		;;
	-f|--family)
		OPT_FAMILY="$2"
		shift 2
		;;
	-l|--lang)
		OPT_LANG="$2"
		shift 2
		;;
	-v|--verbose)
		DEBUG="-v"
		shift
		;;
	-h|--help)
		msg_usage
		exit 0
		;;
	--)
		shift
		;;
	*)
		msg_usage
		exit 1
	esac
done

if [ -z "$OPT_ARTIFACTS_DIR" ] || [ -z "$OPT_LANG" ] || [ -z "$OPT_FAMILY" ]; then
	echo "Use: $PROG -h for help."
	exit 0
fi

debug "Alias: $OPT_ALIAS"
debug "Family: $OPT_FAMILY"
debug "Lang: $OPT_LANG"
debug "Artifacts dir: $OPT_ARTIFACTS_DIR"
debug "Package name: $OPT_PACKAGE"
STR_TEST_DASHED=$(echo "${OPT_PACKAGE}_${OPT_ALIAS}" | sed -e 's/\//-/g' -e 's/ /-/g')
debug "Log file: $STR_TEST_DASHED.log"

clean_exit() {
	rc=$?;
	trap - SIGINT SIGTERM SIGABRT EXIT
	echo "Run test $OPT_ALIAS: done."
	for pid in $(ps -o pid --no-headers --ppid $$); do
		if [ -n "$(ps -p $pid -o pid=)" ]; then
			kill -s HUP $pid
		fi
	done
	local log_file_name="$STR_TEST_DASHED.log"
	local log_file_path="$OPT_ARTIFACTS_DIR/$log_file_name"
	local status
	if [[ $rc -eq 127 ]]; then
		status="ERROR"
	elif grep -q "RESULT: WARN" "$log_file_path"; then
		status="ERROR"
	elif grep -q "RESULT: FAIL" "$log_file_path"; then
		status="FAIL"
	elif grep -q "RESULT: PASS" "$log_file_path"; then
		status="PASS"
	elif grep -q "FAIL" "$log_file_path"; then
		status="FAIL"
	elif grep -q "PASS" "$log_file_path"; then
		status="PASS"
	else
		status="ERROR"
	fi
	echo "$status $OPT_ALIAS" >> "$OPT_ARTIFACTS_DIR/test.log"
	mv "$log_file_path" "$OPT_ARTIFACTS_DIR/${status}_${log_file_name}"
	local results="$OPT_ARTIFACTS_DIR/results.yml"
	local result=$(echo $status | tr '[:upper:]' '[:lower:]')
	test -f "$results" || echo 'results:' > "$results"
	echo "- {result: $result, test: $OPT_ALIAS}" >> "$results"
	exit 0
}
trap clean_exit SIGINT SIGTERM SIGABRT EXIT

cachedir=`pkg-config --variable cachedir fontconfig`
tmpconfd=`mktemp --tmpdir -d fontsci.XXXXXXXX`
conf=$(for i in `rpm -ql $OPT_PACKAGE | grep conf.d`; do
	echo "<include>$i</include>"
done)
cat <<_EOF_> $tmpconfd/fonts.conf
<fontconfig>
	<dir>/usr/share/fonts</dir>
	$conf
	<cachedir>$cachedir</cachedir>
</fontconfig>
_EOF_
debug "Config: `cat $tmpconfd/fonts.conf`"

mkdir -p "$OPT_ARTIFACTS_DIR"
export OUTPUTFILE="$(realpath "$OPT_ARTIFACTS_DIR")/$STR_TEST_DASHED-out.log"
logfile_stdout="$OPT_ARTIFACTS_DIR/$STR_TEST_DASHED.log"
logfile_stderr="$OPT_ARTIFACTS_DIR/$STR_TEST_DASHED-err.log"
exec 3>&1 4>&2 1> >(tee -a "$logfile_stdout" >&3) 2> >(tee -a "$logfile_stderr" >&4)

debug "Check family assignment"
res=`FONTCONFIG_FILE=$tmpconfd/fonts.conf fc-match -f "%{family[0]}" :family=$OPT_ALIAS:lang=$OPT_LANG`
if [ "x$res" = "x$OPT_FAMILY" ]; then
	echo "RESULT: PASS: $OPT_FAMILY was assigned to $OPT_ALIAS as expected"
else
	echo "RESULT: FAIL: $OPT_FAMILY wasn't assigned to $OPT_ALIAS (actual result: $res)"
fi
rm -rf $tmpconfd