Using aptly? update your repos with Discord automatically!

update-discord.sh

#!/bin/bash

. common.sh

exec > >(log update-discord)
exec 2>&1

function aptly() {
  sudo -H -uaptly -gapps aptly $@
}

set -e

download_uri='https://discord.com/api/download?platform=linux&format=deb'

function checkversion() {
  discordver=$(basename "`curl -s --head "$download_uri" | dos2unix | grep -i location | cut -d' ' -f2`" .deb | sed s/-/_/)
  aptly repo search discord | grep -q "$discordver" && {
    echo "We seem to have this discord version $discordver. Exit."
    exit 0
  } || {
    echo "We do not have $discordver. Downloading latest..."
  }
}

checkversion

deb=/opt/aptly/tmp/discord.deb
snaps="`aptly snapshot list -raw | grep discord`" || true
snapName="discord-`date +%F`"
rm -f "$deb"
curl -vsL "$download_uri" -o "$deb"
info=`dpkg -I "$deb"`
discordVersion=`echo "$info" | grep Version | awk '{print $2}'`
discordArch=`echo "$info" | grep Arch | awk '{print $2}'`
mv "$deb" "$(dirname $deb)/discord_${discordVersion}-${discordArch}.deb"
deb="$(dirname $deb)/discord_${discordVersion}-${discordArch}.deb"
aptly repo add discord "$deb"
aptly snapshot create "$snapName" from repo discord
aptly publish list -raw | grep -qi discord && aptly publish drop discord || true

chmod g+rw `tty`
chgrp apps `tty`

aptly publish -distribution discord snapshot "$snapName"
test -z "$snaps" || aptly snapshot drop $snaps
rm -f "$deb"