#!/bin/bash

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#                          ▀         ▀                                     

# help() 
#
# Print the help message
function help() {
    echo "Usage: $0 [-h | -c | --uninstall]"
    echo ""
    echo "-h, --help       Show this help"
    echo "-c, --config     Start the setup process"
    echo "--uninstall      Uninstall the software"
}

# uninstall()
#
# Uninstall Wallify. This function will remove the autostart file,
# the configuration file and the configuration directory.
function uninstall() {
    start_time=$(date +%s%3N)

    echo "Uninstalling..."
    if [ -f ~/.config/autostart/wallify.sh.desktop ]; then
        rm -f ~/.config/autostart/wallify.sh.desktop
    else
        echo "Error: ~/.config/autostart/wallify.sh.desktop does not exist."
    fi
    if [ -d ~/.config/Wallify ]; then
        rm -rf ~/.config/Wallify
    else
        echo "Error: ~/.config/Wallify does not exist."
    fi
    echo "Done."

    end_time=$(date +%s%3N)
    duration=$((end_time - start_time))
    echo "Uninstallation took $duration milliseconds."
}

# config()
#
# This function is used to configure Wallify. It will ask the user to select
# a wallpaper file and then create a configuration file, a start script and an
# autostart file. The configuration file will be saved in
# `~/.config/Wallify/wallpaper.conf` and will contain the path of the selected
# wallpaper. The start script will be saved in
# `~/.config/Wallify/start.sh` and will contain the command to launch the
# wallpaper with the selected options. The autostart file will be saved in
# `~/.config/autostart/wallify.sh.desktop` and will contain the command to launch
# the start script on startup.
function config() {
    USER=$(whoami)
    WALLPAPER_FILE=$(zenity --file-selection --title="Wallify - Select a wallpaper" --filename="" 2>/dev/null)
    if [ $? -eq 0 ]; then
        echo "Selected file: $WALLPAPER_FILE"
        if [ -f "$WALLPAPER_FILE" ]; then
            echo "+ Creating configuration directory"
            mkdir -p ~/.config/Wallify
            echo "+ Creating configuration file"
            echo "WALLPAPER_FILE=$WALLPAPER_FILE" > ~/.config/Wallify/wallpaper.conf
            echo "+ Creating start.sh script"
            cat > ~/.config/Wallify/start.sh <<EOF
#!/bin/bash
user=$(whoami)

sleep 2
WALLPAPER_FILE=$(cat ~/.config/Wallify/wallpaper.conf | grep WALLPAPER_FILE | cut -d '=' -f2)
gsettings set org.gnome.desktop.background picture-uri file://$WALLPAPER_FILE
/home/UCA/machirat1/public/WallPaper/wallify -ni -fs -s -sp -st -b -nf -- mpv -wid WID --loop --no-audio $WALLPAPER_FILE &
EOF
            chmod +x start.sh
            echo "+ Creating autostart file"
            cat >  ~/.config/autostart/wallify.sh.desktop <<EOF
[Desktop Entry]
Version=1.0
Type=Application
Name=Wallify
Exec=/home/UCA/$USER/.config/Wallify/start.sh
Comment=Wallify
EOF
            echo "Setup complete. You can restart your session to apply the changes."
        else
            zenity --error --text="Selected file is not a valid file"
        fi
    else
        zenity --error --text="No file selected"
    fi
}

case "$1" in
    -h|--help)
        help
        ;;
    -c|--config)
        config
        ;;
    --uninstall)
        uninstall
        ;;
    *)
        help
        ;;
esac