#!/usr/bin/env sh
set -eu

CONFIG_PATH="config/ASF.json"
OS_TYPE="$(uname -s)"

case "$OS_TYPE" in
	"Darwin") SCRIPT_PATH="$(readlink "$0")" ;;
	"FreeBSD") SCRIPT_PATH="$(readlink -f "$0")" ;;
	"Linux") SCRIPT_PATH="$(readlink -f "$0")" ;;
	*) echo "ERROR: Unknown OS type: ${OS_TYPE}. If you believe that our script should work on your machine, please let us know."; exit 1
esac

SCRIPT_DIR="$(dirname "$SCRIPT_PATH")"
BINARY_DIR="${SCRIPT_DIR}/out/result"
BINARY="${BINARY_DIR}/ArchiSteamFarm.dll"

if [ ! -d "$BINARY_DIR" ]; then
	echo "ERROR: $BINARY_DIR could not be found!"
	exit 1
fi

if [ ! -f "$BINARY" ]; then
	echo "ERROR: $BINARY could not be found!"
	exit 1
fi

cd "$BINARY_DIR"

BINARY_ARGS=""
PATH_NEXT=0

PARSE_ARG() {
	BINARY_ARGS="$BINARY_ARGS $1"

	case "$1" in
		--path) PATH_NEXT=1 ;;
		--path=*)
			if [ "$PATH_NEXT" -eq 1 ]; then
				PATH_NEXT=0
				cd "$1"
			else
				cd "$(echo "$1" | cut -d '=' -f 2-)"
			fi
			;;
		*)
			if [ "$PATH_NEXT" -eq 1 ]; then
				PATH_NEXT=0
				cd "$1"
			fi
	esac
}

if [ -n "${ASF_PATH-}" ]; then
	cd "$ASF_PATH"
fi

if [ -n "${ASF_ARGS-}" ]; then
	for ARG in $ASF_ARGS; do
		if [ -n "$ARG" ]; then
			PARSE_ARG "$ARG"
		fi
	done
fi

for ARG in "$@"; do
	if [ -n "$ARG" ]; then
		PARSE_ARG "$ARG"
	fi
done

CONFIG_PATH="$(pwd)/${CONFIG_PATH}"

# Kill underlying ASF process on shell process exit
trap "trap - TERM && kill -- -$$" INT TERM

if ! command -v dotnet >/dev/null; then
	echo "ERROR: dotnet CLI tools are not installed!"
	exit 1
fi

dotnet --info

if [ -f "$CONFIG_PATH" ] && grep -Eq '"Headless":\s+?true' "$CONFIG_PATH"; then
	# We're running ASF in headless mode so we don't need STDIN
	dotnet "$BINARY" $BINARY_ARGS & # Start ASF in the background, trap will work properly due to non-blocking call
	wait $! # This will forward dotnet error code, set -e will abort the script if it's non-zero
else
	# We're running ASF in non-headless mode, so we need STDIN to be operative
	dotnet "$BINARY" $BINARY_ARGS # Start ASF in the foreground, trap won't work until process exit
fi