#!/usr/bin/env bash

#############################################################
# Author: Taryel Hlontsi, 2025
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>
#############################################################

doc=$(cat <<'EOF'
NOTES:
This will create a desktop entry and a simlink to the executable
in user's home directory.
It will allow to add the launcher to the bar
EOF
   )

#############################################################
#          SETUP SECTION
#############################################################
set -e
set -o pipefail

#############################################################
#          HELPER FUNCTIONS
#############################################################
info() {
    GREEN='\033[1;32m'
    NC='\033[0m'
    echo -e "${GREEN}${1}${NC}"
}

trace() {
    YELLOW='\033[1;33m'
    NC='\033[0m'
    echo -e "${YELLOW}${1}${NC}"
}

warn() {
    PURPLE='\033[1;35m'
    NC='\033[0m'
    echo -e "${PURPLE}${1}${NC}"
}

error() {
    RED='\033[1;31m'
    NC='\033[0m'
    echo -e "${RED}${1}${NC}"
}


#############################################################
#          RUN SECTION
#############################################################
echo $(date +'%Y-%m-%d %H:%M')
info "$doc"

user=$(whoami)
if [ $user == root ]; then
    error "You should NOT be using a root account"
    exit 1
fi

read -p "The app name [default: My App]: " name
name=${name:-My App}

read -p "Executable name [default: emacs]: " exe
exe=${exe:-emacs}

read -p "New executable name [default: emacs-my-app]: " new_exe
new_exe=${new_exe:-emacs-my-app}

read -p "Icon file path or name [default: help-browser]: " icon
icon=${icon:-help-browser}

read -p "Project path to open: " proj

info 'Adding desktop entry'
cat <<EOF | tee $HOME/.local/share/applications/$new_exe.desktop
[Desktop Entry]
Version=1.0
Type=Application
Name=$name
Icon=$icon
Exec=$new_exe $proj
Comment=Open $name in $exe
Categories=Development;TextEditor;
Terminal=false
StartupWMClass=$new_exe
StartupNotify=true
EOF

info "Adding a link to $exe"
ln -sf $(which $exe) $HOME/.local/bin/$new_exe

info "Updating desktop database"
update-desktop-database

info "Bye!"

exit 0