#! /bin/bash -efu

debug() {

	if [ -n "$DEBUG" ]; then

		echo "$*" >&2

	fi

}

msg_usage() {

	cat <<_EOF_

Run language coverage 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)

-p, --path=PATH		Test fonts on PATH

-n, --name=NAME		Set NAME to store a log file.

-a, --artifactsdir=DIR	test environment dir to store artifacts

-e, --exclude=FILE	Exclude FILE to check.

-i, --include=FILE	Include File to check.

_EOF_

}

PROG="${PROG:-${0##*/}}"

DEBUG="${DEBUG:-}"

OPT_LANG="${OPT_LANG:-en}"

OPT_PATH="${OPT_PATH:-}"

OPT_ARTIFACTS_DIR="${OPT_ARTIFACTS_DIR:-}"

OPT_EXCLUDE=()

OPT_INCLUDE=()

OPT_NAME="${OPT_NAME:-}"

opt=$(getopt -n "$0" --options "hvl:p:n:a:e:i:" --longoptions "help,verbose,lang:,path:,name:,artifactsdir:,exclude:,include:" -- "$@")

eval set -- "$opt"

while [[ $# -gt 0 ]]; do

	case "$1" in

	-n|--name)

		OPT_NAME="$2"

		shift 2

		;;

	-i|--include)

		OPT_INCLUDE+=("$2")

		shift 2

		;;

	-e|--exclude)

		OPT_EXCLUDE+=("$2")

		shift 2

		;;

	-a|--artifactsdir)

		OPT_ARTIFACTS_DIR="$2"

		shift 2

		;;

	-p|--path)

		OPT_PATH="$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_PATH" ]; then

	echo "Use: $PROG -h for help."

	exit 0

fi

expand_regex() {

	local e ret=()

	local path="$1"

	shift

	(cd $path;

	for e; do

		debug "$e"

		set +f

		local x=$(find -regextype posix-egrep -regex "./$e" -print|sed -e 's,^\./,,g')

		ret+=($x)

		set -f

		echo ${ret[@]}

	done)

	echo ${ret[@]}

}

OPT_INCLUDE=($(expand_regex $OPT_PATH ${OPT_INCLUDE[@]}))

OPT_EXCLUDE=($(expand_regex $OPT_PATH ${OPT_EXCLUDE[@]}))

debug "Path: $OPT_PATH"

debug "Lang: $OPT_LANG"

debug "Artifacts dir: $OPT_ARTIFACTS_DIR"

debug "Exclude: ${OPT_EXCLUDE[@]}"

debug "Include: ${OPT_INCLUDE[@]}"

STR_TEST_DASHED=$(echo "${OPT_NAME:-${OPT_LANG}_${OPT_PATH}}" | sed -e 's/\//-/g')

clean_exit() {

	rc=$?;

	trap - SIGINT SIGTERM SIGABRT EXIT

	echo "Run test $OPT_PATH: 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 $OPT_PATH" >> "$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: $OPT_PATH}" >> "$results"

	exit 0

}

trap clean_exit SIGINT SIGTERM SIGABRT EXIT

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)

contains() {

	local e match="$1"

	shift

	for e; do [[ "$e" == "$match" ]] && return 1; done

	return 0

}

debug "Check language coverage"

set +f

for i in `find $OPT_PATH -regex '.*/*\.\(t1\)?\(ttf\)?\(otf\)?\(ttc\)?\(pcf.*\)?\(pfa\)?'`; do

set -f

	debug "$i"

	if test -f $i; then

		n=`basename $i`

		set +e

		contains "$n" "${OPT_EXCLUDE[@]}"

		ret=$?

		set -e

		if [ $ret -eq 1 ]; then

			debug "ignoring $i"

			continue

		fi

		if [ ${#OPT_INCLUDE[@]} -ne 0 ]; then

			set +e

			contains "$n" "${OPT_INCLUDE[@]}"

			ret=$?

			set -e

			if [ $ret -eq 0 ]; then

				debug "$i isn't targeted file"

				continue

			fi

		fi

		debug "  $i"

		res=`fc-validate -l $OPT_LANG $i`

		if echo $res | grep -q Missing; then

			echo "RESULT: FAIL: $i doesn't satisfy $OPT_LANG language coverage."

		else

			echo "RESULT: PASS: $i satisfy $OPT_LANG language coverage."

		fi

	fi

done