#!/bin/sh
#
# NVIDIA Grid and vGPU Daemon Installer
#
# Copyright (c) 2015 NVIDIA Corporation
#
# This is a installation script that attempts to create a UID for the
# NVIDIA Grid and vGPU Daemon and install one of the included scripts,
# which include:
#
#   + System V init (requires chkconfig found in PATH)
#   + systemd (requires systemctl found in PATH)
#   + Upstart (requires initctl found in PATH)
#

##############################################################################
# main script
##############################################################################

# make sure we execute in the script directory
cd $(dirname $0)

# defaults
install_path=""
uninstall=1

current_path=$(dirname $0)

. $current_path/common.sh

targets="systemd upstart sysv"

supported=0
target="unknown"
for tgt in $targets; do
    case "$tgt" in
        systemd)
            target="systemd service"
            checkSystemd $install_path
            [ "$systemd_supported" = "1" ] && { supported=1; break; }
            ;;
        upstart)
            target="Upstart service"
            checkUpstart $install_path
            [ "$upstart_supported" = "1" ] && { supported=1; break; }
            ;;
        sysv)
            target="SysV init script"
            checkSysV $install_path
            [ "$sysv_supported" = "1" ] && { supported=1; break; }
            ;;
        *)
            break
            ;;
    esac
done

[ "$supported" = "1" ] || nvgdError "No supported init system found"

# The last call to checkInstallPath that succeeded set the $potential_path
# for the supported system.
install_path=$potential_path

# Parameters:
# $1: Daemon name
# $2 Uninstall target for Daemon [One of "systemd", "upstart", "sysv"]
run_uninstall() {
    nv_daemon_name="$1"
    uninstall_target="$2"

    . $current_path/common.sh

    # Run through the uninstall steps now
    nv_printf "\n"
    nv_printf "Uninstallation parameters:\n"
    nv_printf "  Path to remove $target from : $install_path\n"
    nv_printf "\n"
    case "$uninstall_target" in
        systemd)
            uninstallSystemdService $install_path
            ;;
        upstart)
            uninstallUpstartService $install_path
            ;;
        sysv)
            uninstallSysVScript $install_path
            ;;
        *)
            nvgdError "Unknown uninstallation target '$uninstall_target'"
            ;;
    esac

    printf "\n$nv_daemon_name $target successfully uninstalled.\n"
}

IS_GRID=$(( 1 ))
if [ "$IS_GRID" = "1" ]; then
    run_uninstall nvidia-gridd $tgt
fi