Creates a desktop entry on /usr/share/applications

create-shortcut.sh

#!/bin/bash

set -euo pipefail

# Common variables
BL=$'\n'
SELECT_YES="YES"
SELECT_NO="NO"
SELECT_OVERWRITE="Overwrite"
SELECT_EXIT="Exit"
SELECT_KEEP="Use current icon"

# Args
ARG_NAME=''
ARG_COMMAND=''
ARG_ICON=''

print_usage() {
    echo "Usage: $0 -n [Example] -c [/path/to/command] -i [https://www.example.com/icon.png]"
    exit 1
}

while getopts 'n:c:i:' flag; do
    case "${flag}" in
        n) ARG_NAME="${OPTARG}" ;;
        c) ARG_COMMAND="${OPTARG}" ;;
        i) ARG_ICON="${OPTARG}" ;;
        *) print_usage
            exit 1 ;;
    esac
done

# Checking variables
if [[ $ARG_NAME == '' || $ARG_COMMAND == '' ]]; then
  print_usage
  exit
fi

# Requesting SUDO
sudo -v

SLUG=$(echo "$ARG_NAME" | sed -r 's/([A-Z])/\L\1/g' | sed -r 's/(\s)/-/g')

DOWNLOADED_FILE=$(basename "$ARG_ICON")
EXTENSION="${DOWNLOADED_FILE##*.}"

ICON_FILE="/usr/share/pixmaps/$SLUG.$EXTENSION"
SHORTCUT_FILE="/usr/share/applications/$SLUG.desktop"

echo "$BL------------------------"
echo "- Starting application -"
echo "------------------------$BL"

# Creating shortcut file
if [ -f $SHORTCUT_FILE ]
then
    echo "$BL Desktop entry already exists:"
    select answer_entry in "$SELECT_OVERWRITE" "$SELECT_EXIT"; do
        case $answer_entry in
            $SELECT_OVERWRITE) break;;
            $SELECT_EXIT) exit;;
        esac
    done
fi

# Function to download icon
download_icon() {
    echo "$BL Downloading icon..."
    wget -q $ARG_ICON
    sudo mv $DOWNLOADED_FILE $ICON_FILE
}

if [[ $ARG_ICON == '' ]]; then
    echo "$BL No icon provided. Filling with the name."
else
    # Checking for icon
    if [ -f $ICON_FILE ]
    then
        echo "$BL Icon already exists on /usr/share/pixmaps:"
        select answer_icon in "$SELECT_OVERWRITE" "$SELECT_KEEP"; do
            case $answer_icon in
                $SELECT_OVERWRITE) download_icon; break;;
                $SELECT_KEEP) break;;
            esac
        done
    else
        download_icon
    fi
fi

# Creating desktop entry
echo "$BL Creating desktop entry..."

echo "[Desktop Entry]
Name=$ARG_NAME
Comment=$ARG_NAME Shortcut (usage: $SLUG to run $ARG_COMMAND)
Exec=$ARG_COMMAND
Icon=$SLUG
Type=Application" | sudo tee $SHORTCUT_FILE > /dev/null

open_file() {
    if [ -x "$(command -v subl)" ]; then
        sudo subl $SHORTCUT_FILE
        return
    fi

    if [ -x "$(command -v nano)" ]; then
        sudo nano $SHORTCUT_FILE
        return
    fi

    if [ -x "$(command -v vim)" ]; then
        sudo vim $SHORTCUT_FILE
        return
    fi

    echo "$BL Impossible to find a file editor. We tried: subl / nano / vim."
}

echo "$BL Finished: open file to edit?"
select answer_edit in "$SELECT_YES" "$SELECT_NO"; do
    case $answer_edit in
        $SELECT_YES) open_file; break;;
        $SELECT_NO) break;;
    esac
done