newscript

#!/bin/bash

script="$(basename "$0")"
basic=false
openEditor=false
editor=idea

usage() {
	cat <<-DOC
	Usage: $script [-beh] [file]

	Creates a new shell template. Named tmp#.

	You might want a full or basic template. A full template has a flags mechanism.
	Default is "full".

	Examples:
        $script
        $script -b -e
        $script -e tea.sh

	Options:
        -b, --basic        create basic template
        -e, --editor       open in txt editor
        -h, --help         show this help message
DOC
}

template=$(cat <<\EOF
#!/bin/bash

usage() {
	script="./$(basename "$0")"

	cat <<-DOC
	Usage: $script {-s|-t} PATTERN

	Summary, help, etc.

	Options:
        -s, --slong        slong explanation
        -t, --tlong        tlong explanation
        -h, --help         show this help message
DOC
}

if [ $# -eq 0 ]; then
	usage
	exit
fi

if [ $# -lt 2 ]; then
	echo "Try '$script -h' for more information."
	exit 1
fi

while [ $# -gt 0 ]; do
	case $1 in
	-s | --slong)
		# code here
		;;
	-t | --tlong)
		# code here
		;;
	-h | --help)
		usage
		exit
		;;
	*)
		# code here
		;;
	esac
	shift
done
EOF
)

createBasic() {
	local file=$1
	printf "#!/bin/bash\n\n" > "$file"
	chmod +x "$file"

	echo "Created a new basic script: $file"
}

createFull() {
	local file=$1
	echo "$template" > "$file"
	chmod +x "$file"

	echo "Created a new full script: $file"
}

requireBinary() {
	local binary line
	binary=$1
	if ! command -v "$binary" &> /dev/null; then
		line=$(caller | awk '{print $1}')
		echo "Error: $binary is not installed. Check line $line."
		return 1
	fi
	return 0
}

inPath() {
	local file err
	file=$1
	err="Error: $file already exists in PATH."

	if [[ $SHELL =~ zsh ]]; then
		zsh -c "source ~/.zshrc; command -v $file" &> /dev/null
		exitCode=$?

		if [[ $exitCode == 0 ]]; then
			echo "$err"
			return 0
		fi
	fi

	if command -v "$file" &> /dev/null; then
		echo "$err"
		return 0
	fi

	return 1
}

new() {
	local file=$1
	if $basic; then
		createBasic "$file"
	else
		createFull "$file"
	fi
}

while [ $# -gt 0 ]; do
	case $1 in
	-b | --basic)
		basic=true
		;;
	-e | --editor)
		requireBinary "$editor" || exit $?
		openEditor=true
		;;
	-h | --help)
		usage
		exit
		;;
	*)
		file=$1
	esac
	shift
done

inPath "$file" && exit

if [[ -n $file ]]; then
	new "$file"
	$openEditor && "$editor" "$file" &> /dev/null & disown
	exit
fi

cnt=1
while true; do
	file="tmp${cnt}"

	if [[ ! -f "$file" ]]; then
		new "$file"
		$openEditor && "$editor" "$file" &> /dev/null & disown
		break
	fi

	((cnt++))
done