services-garbaye/functions.sh

#!/usr/bin/env bash

SCRIPTNAME="$( basename -- "$0" )"

# check : current user is root?
check_root () {
    [[ $EUID -eq 0 ]]
}

# ok if root
ensure_root () {
    if ! check_root; then
	echo "ERROR : This script must be run as root"
	exit 1
    else
	return 0
    fi
}

# ok if non root
ensure_not_root () {
    if check_root; then
	echo "ERROR : This script must not be *run* as root"
	exit 1
    else
	return 0
    fi
}

# ok if running script from current directory
ensure_pwd_is_scriptdir () {
  if [[ $PWD != $ABSDIR ]]; then
    echo "Please cd in the script directory before running it :"
    echo "cd ${ABSDIR}"
    echo "./${SCRIPTNAME}"
    exit 1
  fi
}

# make sure systemd directory exists
ensure_systemd_as_user_dir_exists () {
  [[ -d ${HOME}/.config/systemd/user/ ]] || mkdir -p ${HOME}/.config/systemd/user/
}

# check: systemd unit exists
check_systemd_unit_exists () {
  systemctl --user cat -- ${1} &> /dev/null
}

# ok if systemd unit file {1} exists
ensure_systemd_unit_exists () {
    if ! check_systemd_unit_exists ${1}; then
	echo "ERROR : systemd unit ${1} does not exists!"
	exit 1
    else
	return 0
    fi
}

# ok if systemd unit file {1} does not exists
ensure_systemd_unit_not_exists () {
    if check_systemd_unit_exists ${1}; then
	echo "ERROR : systemd unit ${1} already exists!"
	exit 1
    else
	return 0
    fi
}

# check: systemd unit running
check_systemd_unit_running () {
  systemctl --user is-active --quiet service ${1}
}

# ok if systemd unit {1} is running
ensure_systemd_unit_running () {
    if ! check_systemd_unit_running ${1}; then
	echo "ERROR : systemd unit ${1} is not running!"
	exit 1
    else
	return 0
    fi
}

# ok if systemd unit {1} is NOT running
ensure_systemd_unit_not_running () {
    if check_systemd_unit_running ${1}; then
	echo "ERROR : systemd unit ${1} is running!"
	exit 1
    else
	return 0
    fi
}

# check: container $1 exists?
check_container_exists () {
    podman container exists ${1}
}

# ok if container exists
ensure_container_exists () {
    if ! check_container_exists ${1}; then
	echo "ERROR : container ${1} does not exists"
	exit 1
    else
	return 0
    fi
}

# ok if container does not exists
ensure_container_not_exists () {
    if check_container_exists ${1}; then
	echo "ERROR : container ${1} already exists"
	exit 1
    else
	return 0
    fi
}

# check: container ${1} is running?
check_container_running () {
  [[ "podman container inspect -f '{{.State.Status}}' ${1}" == "running" ]]
}

# ok if container is running
ensure_container_running () {
    if ! check_container_running ${1}; then
	echo "ERROR : container ${1} is not running"
	exit 1
    else
	return 0
    fi
}

# ok if container is not running
ensure_container_not_running () {
    if check_container_running ${1}; then
	echo "ERROR : container ${1} is running"
	exit 1
    else
	return 0
    fi
}