appimlaunch

#!/bin/bash

###
# AppImage launcher.
# Launches the newest AppImage in the given directory.
# Ignores the extension. So it can be used to launch any executable, really.
# This program comes with absolutely no warranty.
# Author: Çağlar Turalı <turali.js.org>
##

usage() {
	local options=(
		"PATH"
		"PATH [KEYWORD]"
		"-h | --help"
	)
	local descriptions=(
		"Path to search for files."
		"Optional keyword for filtering files."
		"Shows this help."
	)
	[[ ! -z "$1" ]] && printf "$1\n\n"
	printf "Launches the newest AppImage (determined by modification time) in the given directory.\n"
	printf "Usage:\n"
	for idx in "${!options[@]}"; do
		printf "\t%s %-16s %s\n" "$(basename $0)" "${options[$idx]}" "${descriptions[$idx]}"
	done
}

if [ "$#" -lt 1 ]; then
	usage "Provide at least a path that contains an AppImage to run."
	exit 0
else
	case "$1" in
	-h | --help)
		usage
		exit 0
		;;
	*)
		target_dir=$1
		filter_kw=$2
		exec_file=$(ls -t $target_dir 2>/dev/null | grep -i "$filter_kw" | head -1)
		full_path="${target_dir:+$target_dir/}$exec_file"
		exec_path=$(realpath ${full_path})

		if [ -f "$exec_path" ]; then
			printf "Launching %s...\n" "$exec_file"
			eval $exec_path
		else
			printf "No executable file found.\n"
			exit 1
		fi
		;;
	esac
fi