#!/bin/sh
set -eu

mkdir -p doc/po

LANGS=
while getopts 'l:' flag; do
	case "$flag" in
		l)
			LANGS="$OPTARG"
			;;
		*)
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))
if [ -z "$LANGS" ]; then
	echo "Missing LANG" >&2
	exit 2
fi

po() {
	format="$1"
	from_f="$2"
	to_f="$3"
	lang="$4"
	po4a-updatepo  -M UTF-8 -f "$format" -m "$from_f" -p "doc/po/$lang.po" -v --previous
	po4a-translate -M UTF-8 -f "$format" -m "$from_f" -p "doc/po/$lang.po" -v -L UTF-8 -l "$to_f" -k 0 >&2
}

for from_f in "$@"; do
	for lang in $LANGS; do
		to_f="$(echo "$from_f" | sed "s/\.en\./.$lang./")"
		printf 'Generating %s...\n' "$to_f"

		case "$from_f" in
			*.en.[1-9].in)
				po man "$from_f" "$to_f" "$lang"
				;;
			*.en.md|*.en.msg)
				po text "$from_f" "$to_f" "$lang"
				;;
			*)
				echo "Unsupported file format: $from_f" >&2
				exit 2
				;;
		esac
	done
done

end="\033[0m"
yellowb="\033[1;33m"
for lang in $LANGS; do
	if LANG=POSIX msgfmt --statistics "doc/po/$lang.po" 2>&1 | grep translated; then
		printf "\n\t${yellowb}WARNING${end}!\n	Missing translations for %s\n\n" "doc/po/$lang.po" >&2
	fi
done