Enable Slack Dark Mode for MAC OS

slack-dark-theme.sh

#!/bin/bash

# Updates your slack installation on MAC to use dark mode

# adjust this URL for your chosen darkmode.
theme_url="https://cdn.rawgit.com/laCour/slack-night-mode/master/css/raw/black.css"
ssbj_dir="/Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static/"

# ensure we are root
if [[ "$EUID" -ne 0 ]]; then
  echo "Run as root"
  exit
fi

# make a backup of the current file, just in case
cp $ssbj_dir/ssb-interop.js $ssbj_dir/ssb-interop.js.bkp

# add the event listener
cat <<EOF >> $ssbj_dir/ssb-interop.js
document.addEventListener('DOMContentLoaded', function () {
  \$.ajax({
    url: '$theme_url',
    success: function (css) {
      \$("<style></style>").appendTo('head').html(css)
    }
  });
});
EOF