Pacman-like front-end for apt

pacman-apt

#!/usr/bin/bash
ROOT_PROGRAM=(sudo)
APT=(apt)
function pacman-run-apt(){
	"${APT[@]}" "$@"
}
function pacman-run-apt-with-root(){
	IFS=
	if [[ "$(id -u)" == "0" ]]; then
		"${APT[@]}" "$@"
	else
		if [[ "${#ROOT_PROGRAM[@]}" -gt 0 ]]; then
			"${ROOT_PROGRAM[@]}" "${APT[@]}" "$@"
		else
			echo "you need to be root to use this"
			return 1
		fi
	fi
}
function pacman-apt(){
	IFS=
	S=0
	R=0
	Q=0
	y=0
	u=0
	h=0
	s=0
	a=0
	packages=()
	end=0
	for arg in "$@"; do
		if [[ "$arg" == "--" ]]; then end=1; fi
		if [[ "$end" == 0 && "$arg" == -* ]]; then
			E=0
			for z in S R Q y u h s a; do
				if [[ "$arg" == *"$z"* && "$arg" != \-\-* ]]; then
					eval "$z=1"
					E=1
				fi
			done
			if [[ "$E" != 1 ]]; then
				echo "invalid flag"
				return
			fi
		else
			packages+=( "$arg" )
		fi
	done
	if [[ "$h" == 1 ]]; then
		echo "pacman-apt"
		echo " -S : apt install [packages...]"
		echo "   -y : apt update"
		echo "   -u : apt upgrade"
		echo "   -s : apt search"
		echo " -R : apt remove [packages...]"
		echo "   -u : apt autoremove"
		echo " -Q : apt show [packages...]"
		echo "   -a : apt show -a [packages...]"
		return
	fi
	if [[ "$R" == 1 ]]; then
		if [[ "$S" == 1 ]]; then
			echo "can not have multiple operations at once"
			return
		fi
		if [[ "$Q" == 1 ]]; then
			echo "can not have multiple operations at once"
			return
		fi
		if [[ "$a" == 1 ]]; then
			echo "invalid flag"
			return
		fi
		if [[ "$y" == 1 ]]; then
			echo "invalid flag"
			return
		fi
		if [[ "$s" == 1 ]]; then
			echo "invalid flag"
			return
		fi
	else
		if [[ "$Q" == 1 ]]; then
			if [[ "$S" == 1 ]]; then
				echo "can not have multiple operations at once"
				return
			fi
			if [[ "$u" == 1 ]]; then
				echo "invalid flag"
				return
			fi
			if [[ "$y" == 1 ]]; then
				echo "invalid flag"
				return
			fi
			if [[ "$s" == 1 ]]; then
				echo "invalid flag"
				return
			fi
		else
			if [[ "$S" == 1 ]]; then
				if [[ "$a" == 1 ]]; then
					echo "invalid flag"
					return
				fi
			else
				echo "no operation specified"
				return
			fi
		fi
	fi
	if [[ "$s" == 1 ]]; then
		if [[ "$y" == 1 ]]; then
			echo "-y and -s can not go together"
			return
		fi
		if [[ "$u" == 1 ]]; then
			echo "-u and -s can not go together"
			return
		fi
	fi
	if [[ "$Q" == 1 ]]; then
		if [[ "${#packages[@]}" -gt 0 ]]; then
			if [[ "$a" == 1 ]]; then
				pacman-run-apt show -a "${packages[@]}" || return "$?"
			else
				pacman-run-apt show "${packages[@]}" || return "$?"
			fi
		else
			echo "no packages specified"
			return 1
		fi
		return 0
	fi
	if [[ "$R" == 1 ]]; then
		if [[ "$u" == 1 ]]; then
			if [[ "${#packages[@]}" -gt 0 ]]; then
				pacman-run-apt-with-root remove "${packages[@]}" || return "$?"
			fi
			pacman-run-apt-with-root autoremove || return "$?"
		else
			if [[ "${#packages[@]}" -gt 0 ]]; then
				pacman-run-apt-with-root remove "${packages[@]}" || return "$?"
			else
				echo "no packages specified"
				return 1
			fi
		fi
		return 0
	fi
	if [[ "$S" == 1 ]]; then
		if [[ "$s" == 1 ]]; then
			if [[ "${#packages[@]}" -gt 0 ]]; then
				pacman-run-apt search "${packages[@]}" || return "$?"
			else
				echo "no packages specified"
				return 1
			fi
		elif [[ "$u" == 1 ]] || [[ "$y" == 1 ]]; then
			if [[ "$y" == 1 ]]; then
				pacman-run-apt-with-root update || return "$?"
			fi
			if [[ "$u" == 1 ]]; then
				pacman-run-apt-with-root upgrade || return "$?"
			fi
			if [[ "${#packages[@]}" -gt 0 ]]; then
				pacman-run-apt-with-root install "${packages[@]}" || return "$?"
			fi
		else
			if [[ "${#packages[@]}" -gt 0 ]]; then
				pacman-run-apt-with-root install "${packages[@]}" || return "$?"
			else
				echo "no packages specified"
				return 1
			fi
		fi
		return 0
	fi
	return 1
}
IFS= pacman-apt "$@"