containerctl/containerctl

#!/bin/sh

# SPDX-FileCopyrightText: (C) 2025 Enno Tensing <tenno+containerctl@suij.in>
#
# SPDX-License-Identifier: GPL-2.0-only

BASEDIR="/var/lib/containerctl"
CONTAINERDIR="${BASEDIR}/containers"
CONFIGDIR="${BASEDIR}/configs"
LOGDIR="/var/log/containerctl"
TODAY="$(date '+%F')"
LOG="${LOGDIR}/${TODAY}"

log_error()
{
	printf '[%b] (EE) %b\n' "${TODAY}" "${@}" | tee -a "${LOG}"
}

list_dir()
{
	find "${1}" -mindepth 1 -type d
}

list_containers()
{
	list_dir "${CONTAINERDIR}"
}

list_configs()
{
	list_dir "${CONFIGDIR}"
}

exec_script()
{
	container="${1}"
	script="${2}"

	if [ -z "${container}" ]
	then
		log_error "No container passed"
		exit 1
	fi

	if [ -z "${script}" ]
	then
		log_error "No script passed"
		exit 1
	fi

	if ! [ -e "${CONTAINERDIR}/${container}" ]
	then
		log_error "${container} does not exist, did you forget to generate it?"
		exit 1
	fi

	if ! [ -d "${CONTAINERDIR}/${container}" ]
	then
		log_error "${container} does not exist"
		exit 1
	fi

	if ! [ -e "${CONTAINERDIR}/${container}/${script}" ]
	then
		log_error "${script} is invalid, maybe try regenerating the container?"
		exit 1
	fi

	if ! [ -f "${CONTAINERDIR}/${container}/${script}" ]
	then
		log_error "${script} is invalid, please recreate the container"
		exit 1
	fi

	/bin/sh "${CONTAINERDIR}/${container}/${script}" || log_error "${script} failed!"
}


generate_container()
{
	config="${1}"

	if [ -z "${config}" ]
	then
		log_error "No config was passed."
		exit 1
	fi

	if ! [ -e "${CONFIGDIR}" ]
	then
		log_error "${CONFIGDIR} does not exist"
		exit 1
	fi

	if ! [ -d "${CONFIGDIR}" ]
	then
		log_error "${CONFIGDIR} is not a directory"
		exit 1
	fi

	if ! [ -e "${CONFIGDIR}/${config}" ]
	then
		log_error "${config} does not exist!" \
			"Please check the name and or location  of the desired config."
		exit 1
	fi

	if ! [ -f "${CONFIGDIR}/${config}" ]
	then
		log_error "${config} is not a file."
		exit 1
	fi

	/usr/bin/env python3 "${BASEDIR}/generate/generate.py" \
		"${CONFIGDIR}/${config}" "${LOG}" "${CONTAINERDIR}"

	if [ "${?}" = 1 ]
	then
		log_error "Container generation failed."
		exit 1
	fi
}

generate_all()
{
	list_configs | while read -r config
	do
		generate_config "$(printf '%b' "${config}" | sed -e "s|${CONFIGDIR}||g")"
	done
}

case "${1}" in
	"list-containers") list_containers ;;
	"list-configs") list_configs ;;
	"generate-all") generate_all ;;
	"generate") shift; generate_config "${@}" ;;
	*) exec_script "${@}" ;;
esac