discord-installer

#!/bin/sh

# yeh, really...
# but if you are reading this then you are a degenerate too!

myname=${0##*/}

config="${XDG_CONFIG_HOME:-$HOME/.config}/discord-installer/configrc"

disable_notifs=""

channel="stable"

if [ -e "$config" ]; then
    . "$config"
fi

install_dir=/tmp/discord-installer

notif_me () {
    if [ -z "$disable_notifs" ]; then
        notify-send -i discord-canary "$1"
    else
        printf '[%s]: %s\n\n' "$myname" "$1"
    fi
}

_update () {
    mkdir -p "$install_dir"
    STABLE="https://discord.com/api/download?platform=linux&format=deb"
    CANARY="https://discord.com/api/download/canary?platform=linux&format=deb"
    case "$channel" in
        stable)
            URL="$STABLE"
        ;;
        canary)
            URL="$CANARY"
        ;;
        *)
            notif_me "invalid channel ${channel}, use stable or canary, exiting now."
            exit 1
        ;;
    esac
    wget -c -P "$install_dir"/ --content-disposition "$URL"
}

_install () {
    has_tty=""
    if tty | grep -qF -e "dev/tty" -e "dev/pts"; then
        has_tty=1
    fi
    if [ -n "$has_tty" ]; then
        sudo apt install "$install_dir"/discord-*.*.deb -y
    else
        if [ -n "$SUDO_ASKPASS" ]; then
            sudo -A apt install "$install_dir"/discord-*.*.deb -y
        else
            pkexec apt install "$install_dir"/discord-*.*.deb -y
        fi
    fi
}

_clean () {
    rm "$install_dir"/discord-*.*.deb
}

_better () {
    type betterdiscordctl || betterdiscordinstaller
    betterdiscordctl -v reinstall
}

_upgrade () {
    _clean
    notif_me "Downloading update"
    _update
    notif_me "Installing update"
    _install
    notif_me "Installed update"
    # _better
    _clean
}

if tty | grep -qF -e "dev/tty"; then
    disable_notifs=1
    notif_me "running inside a tty, maybe consider installing this stuff when you got a GUI"
fi
case "$1" in
    "update")  _update  ;;
    "upgrade") _upgrade ;;
    "install") _install ;;
    "clean")   _clean   ;;
    "better")  _better  ;;
esac