#!/bin/sh

# Vars {{{
readonly PROGNAME=$(basename "${0}")
readonly PROGDIR=$(readlink -m $(dirname "${0}"))
readonly ARGS="${*}"
readonly NBARGS="${#}"
[ -z "${DEBUG}" ] && DEBUG=1

## Colors
readonly PURPLE='\033[1;35m'
readonly RED='\033[0;31m'
readonly RESET='\033[0m'
readonly COLOR_DEBUG="${PURPLE}"
# }}}

usage() {                                                       # {{{

	cat <<- EOF
usage: $PROGNAME [--help] [-d|-h]

Try to disable default Maco's cron (upgrades,…).

EXAMPLES:
    - Disable Maco's cron on the current host
        ${PROGNAME}

OPTIONS :
    -d,--debug
        Enable debug messages.

    -h,--help
        Print this help message.
EOF

}
# }}}
debug_message() {                                               # {{{

	local_message="${1}"

	## Print message if DEBUG is enable (=0)
	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME}: ${local_message}"

	return 0
}
# }}}
is_proc_running() {                                             # {{{

	local_proc_pattern="${1}"

	local_count_proc_pattern="$(pgrep -f -- "${local_proc_pattern}" | wc -l)"

	case "${local_count_proc_pattern}" in
		0 ) ## No procs related to this pattern are running
			return_proc_running="1"
			;;
		* ) ## At least one proc seems running
			return_proc_running="0"
			;;
esac

	## Simple debug message to valid current variables
	debug_message "is_proc_running − \
procs running (with the pattern: ${RED}${local_proc_pattern}${COLOR_DEBUG}) on the current host: ${RED}${local_count_proc_pattern}${COLOR_DEBUG}."

	return "${return_proc_running}"

}
# }}}
remove_cron() {                                                 # {{{

	debug_message "remove_cron − \
Try to remove maco's cron jobs (autoupdate, benchmark,…)."

	## Remove default Maco cron that check updates
	rm -f /etc/cron.daily/ipr_autoupdate

	## and benchmark
	rm -f /etc/cron.daily/ipr_benchmark /etc/cron.monthly/ipr_benchmark

}
# }}}
manage_systemd_service() {                                      # {{{

	maco_service_name="maco.service"

	## If maco.service is enable
	##   Disable it at boot
	systemctl --quiet is-enabled "${maco_service_name}" \
		&& debug_message "manage_systemd_service − Try to disable ${maco_service_name}." \
		&& systemctl --quiet disable "${maco_service_name}" > /dev/null 2>&1

	## After a Maco's upgrade, the service should be set.
	## If this upgrade require reboot, then the service should be run
	## at the next boot
	## It will be re-disable by this script after the upgrade.

}
# }}}
main() {                                                        # {{{

	maco_proc_pattern="(/opt/maco/bin/maco.autoupdate.sh)"

	## If anything related to maco is currently running
	### Exit
	is_proc_running "${maco_proc_pattern}" \
		&& exit 0

	remove_cron

	manage_systemd_service

}
# }}}

# Manage arguments                                                # {{{
# This code can't be in a function due to arguments

if [ ! "${NBARGS}" -eq "0" ]; then

	manage_arg="0"

	# Parse all options (start with a "-") one by one
	while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do

	case "${1}" in
		-d|--debug )           ## debug
			DEBUG=0
			;;
		-h,--help )            ## help
			usage
			## Exit after help informations
			exit 0
			;;
		-- )                   ## End of options list
			## End the while loop
			break
			;;
		* )                    ## unknow option
			printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
			printf '%b\n' "---"
			usage
			exit 1
			;;
	esac

	debug_message "Arguments management − \
${RED}${1}${COLOR_DEBUG} option managed."

	## Move to the next argument
	shift
	manage_arg=$((manage_arg+1))

	done

	debug_message "Arguments management − \
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
else
	debug_message "Arguments management − \
No arguments/options to manage."
fi

# }}}

main

exit 0