newmod

#! /usr/bin/bash

################################################################################
# Copyright: brown.liuzan@outlook.com
# Version: 1.2
# Date: 20230329
# Description: Used to create a module template.
################################################################################

source ./lib/environments.sh
source ./lib/errno.sh
source ./lib/printer.sh

function usage() {
	print_bold_green "Usage: newmod [-m|--module-name <ModuleFileName>]"
	print_bold_green "              [-h|--help]"
	print_bold_green "Note:"
	print_green "    -m <ModuleFileName>, specify the bash module file name; must be [a-zA-Z0-9_]+.sh"
}

function check_and_create_empty_modfile() {
	local vRc

	mkdir -p lib
	vRc=$?
	if [[ ${vRc} -ne 0 ]]; then
		print_red_t "[${vRc}]Failed to create lib dir of module files."
		exit ${EPERM}
	fi

	local vFileName=$1
	if ! [[ ${vFileName} =~ lib/[a-zA-Z0-9_]+.sh ]]; then
		print_red_t "Invalid module file name: ${vFileName}"
		usage
		exit ${EINVAL}
	fi

	if [[ -f ${vFileName} ]]; then
		print_yellow_t "Module file has alread existed: ${vFileName}"
		exit ${EEXIST}
	fi

	touch ${vFileName}
	vRc=$?
	if [[ ${vRc} -ne 0 ]]; then
		print_red_t "[${vRc}]Failed to create empty module file: ${vFileName}"
		exit ${EPERM}
	fi
}

function main() {
	local vDebug=false
	local vBashModuleFileName
	for((i = 1; i <= $#; ++i)); do
		case ${!i} in
		'-m' | '--module-name')
			i=$((i + 1))
			vBashModuleFileName=lib/${!i}
			check_and_create_empty_modfile ${vBashModuleFileName}
			;;
		'-h' | '--help')
			usage
			exit ${EOK}
			;;
		*)
			usage
			exit ${EINVAL}
			;;
		esac
	done

	local vCondMacro=${vBashModuleFileName%.sh}
	${vDebug} && echo "vCondMacro=${vCondMacro}"
	vCondMacro=LIUZAN_${vCondMacro#lib/}_SH
	${vDebug} && echo "vCondMacro=${vCondMacro}"
	vCondMacro=${vCondMacro^^[a-zA-Z]}
	${vDebug} && echo "vCondMacro=${vCondMacro}"

	echo '#! /usr/bin/bash' > ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo '################################################################################' >> ${vBashModuleFileName}
	echo '# Copyright: brown.liuzan@outlook.com' >> ${vBashModuleFileName}
	echo '# Version: 1.0' >> ${vBashModuleFileName}
	echo "# Date: $(date +%Y-%M-%d)" >> ${vBashModuleFileName}
	echo '# Description:' >> ${vBashModuleFileName}
	echo '################################################################################' >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo "if [[ '\${${vCondMacro}}' != "${vCondMacro}_DEFINED" ]]; then" >> ${vBashModuleFileName}
	echo "readonly ${vCondMacro}='${vCondMacro}_DEFINED'" >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo '####Imports of other module files####' >> ${vBashModuleFileName}
	echo "source ${ZBASH_LIB_ROOT}/environments.sh" >> ${vBashModuleFileName}
	echo "source ${ZBASH_LIB_ROOT}/errno.sh" >> ${vBashModuleFileName}
	echo "source ${ZBASH_LIB_ROOT}/printer.sh" >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo '####Definition of global parameters####' >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo '####Definition of functions####' >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo '####Unit test section####' >> ${vBashModuleFileName}
	echo 'if false; then' >> ${vBashModuleFileName}
	echo '    print_bold_green_t "====Unit test begin===="' >> ${vBashModuleFileName}
	echo '    print_bold_green_t "====Unit test end===="' >> ${vBashModuleFileName}
	echo 'fi' >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo >> ${vBashModuleFileName}
	echo "fi  # ${vCondMacro}" >> ${vBashModuleFileName}
}

main "$@"