#!/bin/bash

set -eu

die()
{
	echo "$*" 1>&2
	exit 1
}

NODENV_SRC_PATH="/usr/local/psa/admin/plib/modules/nodejs/libexec/nodenv"
NODENV_DST_BASE_PATH="/usr/libexec"
NODENV_DST_PATH="$NODENV_DST_BASE_PATH/nodenv"
NODENV_TARGET="/usr/bin/nodenv"
HTTPD_SYSTEMD_CONF_DIR="/usr/lib/systemd/system/httpd.service.d"

install_nodenv()
{
	chmod 755 "$NODENV_SRC_PATH"/*
	cp -rf "$NODENV_SRC_PATH" "$NODENV_DST_BASE_PATH"
	if [ ! -e "$NODENV_TARGET" ] ; then
		ln -sf "$NODENV_DST_PATH/nodenv" "$NODENV_TARGET"
	fi

	cp "$NODENV_SRC_PATH/nodenv-init-profile" /etc/profile.d/nodenv.sh
}

remove_nodenv()
{
	local nodenv_realpath=$(realpath "$NODENV_TARGET")
	if [ "$nodenv_realpath" = "$NODENV_DST_PATH/nodenv" ] ; then
		rm $NODENV_TARGET
	fi

	if [ -d "$NODENV_DST_PATH" ] ; then
		rm -rf "$NODENV_DST_PATH"
	fi

	rm /etc/profile.d/nodenv.sh

	if [ "$OS_NAME" = "AlmaLinux" ] && [ "$OS_SHORT_VERSION" = "10" ] && [ -f "$HTTPD_SYSTEMD_CONF_DIR/nodejs.conf" ]; then
		rm "$HTTPD_SYSTEMD_CONF_DIR/nodejs.conf"
		/bin/systemctl --system daemon-reload
	fi
}

do_install()
{
	local packages="passenger"

	[ "$OS_ARCH" = "x86_64" -o "$OS_ARCH" = "aarch64" ] || die "Unsupported architecture"

	case "$OS_PKGTYPE" in
		rpm)
			packages+=" mod_passenger libatomic"
			;;
		deb)
			packages+=" libapache2-mod-passenger-plesk libatomic1"
			;;
		*)
			die "Unsupported package type $OS_PKGTYPE ($OS_NAME $OS_VERSION): only rpm and deb are supported"
			;;
	esac

	plesk sbin package --install $packages

	if [ "$OS_NAME" = "AlmaLinux" -a "$OS_SHORT_VERSION" = "10" ]; then
		mkdir -p "$HTTPD_SYSTEMD_CONF_DIR"
		cat > "$HTTPD_SYSTEMD_CONF_DIR/nodejs.conf" <<EOF
[Service]
MemoryDenyWriteExecute=no
EOF
		/bin/systemctl --system daemon-reload
	fi

	mkdir -p "/opt/plesk/node"
	install_nodenv
}

do_remove()
{
	remove_nodenv
}

if [ "${1:-}" = "remove" ] ; then
	do_remove
else
	do_install
fi