#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
		Usage:
		  check.sh
		  check.sh -h
	EOF
}

help() {
	cat <<-'EOF'

		Options:
		  -h, --help    show this message
	EOF
}

for flag in "$@"; do
	case "$flag" in
		--)
			break
			;;
		--help)
			usage
			help
			exit
			;;
		*)
			;;
	esac
done

while getopts 'h' flag; do
	case "$flag" in
		h)
			usage
			help
			exit
			;;
		*)
			usage >&2
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))

cd -- "$(dirname -- "$0")"
cd -- "$(git rev-parse --show-toplevel)"


git ls-files |
	xargs awk 'FNR==1 && /^#!\/bin\/sh$/ { print FILENAME }' |
	xargs shellcheck -x

git ls-files |
	xargs awk 'FNR==1 && /^#!\/usr\/bin\/env perl$/ { print FILENAME }' |
	xargs perlcritic

if git grep FIXME -- ":(exclude)$0"; then
	printf 'Leftover FIXME markers\n' >&2
	exit 1
fi

if ! git diff --quiet || ! git diff --quiet --staged; then
	printf 'Dirty tilde repository.\n' >&2
	exit 1
fi

PRIV="$XDG_CONFIG_HOME/../var/lib/private/tilde"
if ! git -C "$PRIV" diff --quiet || ! git -C "$PRIV" diff --quiet --staged; then
	printf 'Dirty private tilde repository.\n' >&2
	exit 1
fi

for f in opt/tests/*; do
	sh "$f"
done

# FIXME:
# verify that the expiry date on the GPG key is greater than 1 year
# assert git pushed