Make Desktop File

#!/bin/bash
# -*- Mode: sh; coding: utf-8; indent-tabs-mode: t; tab-width: 4 -*-
#
# A script for Nautilus to create a desktop file for the selected files
#

# Path to the directory where the desktop files will be created
desktop_path="$HOME/.local/share/applications/"

# Append our custom directory to the path
desktop_path+="user/"

# Create the directory if it doesn't exist
mkdir -p "$desktop_path"

# Counter for how many files were created
desktop_files_created=0

# Store error message for a single desktop file
error_message="Unknown error"

# Create a desktop file for each selected file
for uri in "$@"; do
	# Append current path to uri
	uri="$PWD/$uri"
	
	# Make sure it's a file and that it's executable
	if [ ! -f "$uri" ]; then
		error_message="The selected item is not a file"
		continue
	fi
	if [ ! -x "$uri" ]; then
		error_message="The selected file is not executable"
		continue
	fi
	
	# Get the filename
	filename=$(basename "$uri")
	
	# Prepare the default error message
	error_message="A desktop file could not be created for $filename"
	
	# Make sure the desktop file doesn't already exist
	if [ -f "$desktop_path$filename.desktop" ]; then
		error_message="A desktop file already exists for $filename"
		continue
	fi
	
	# Create the desktop file
	echo "[Desktop Entry]
Type=Application
Encoding=UTF-8
Name=$filename
Comment=User created desktop file
Exec=\"$uri\"
Icon=
Terminal=false
Categories=;
Keywords=$filename;" > "$desktop_path$filename.desktop"

	# Make sure the file was created
	if [ ! -f "$desktop_path$filename.desktop" ]; then
		continue
	fi
	
	# Change the permissions of the desktop file
	chmod +x "$desktop_path$filename.desktop"
	
	# Make sure the permissions were changed
	if [ ! -x "$desktop_path$filename.desktop" ]; then
		error_message="The permissions of the desktop file could not be changed"
		continue
	fi
	
	# Increment the counter
	desktop_files_created=$((desktop_files_created+1))
done

# Notify the user via Zenity if any desktop files were created
if [ $desktop_files_created -gt 0 ]; then
	# If only one desktop file was created
	if [ $desktop_files_created -eq 1 ]; then
		# Tell the user the filename
		# Also give him the option to edit the file or just click okay
		zenity --question --text "A desktop file was created for $filename" --ok-label="OK" --cancel-label="Edit"
		if [ $? -eq 1 ]; then
			# Edit the file
			xdg-open "$desktop_path$filename.desktop"
		fi
	else # If more than one desktop file was created
		zenity --info --text "$desktop_files_created desktop files were created"
	fi
else
	# If only one desktop file was requested
	if [ $# -eq 1 ]; then
		# Use the error message we prepared earlier
		zenity --error --text "$error_message"
	else # If more than one desktop file was requested
		zenity --error --text "Desktop files could not be created for the selected files"
	fi
fi