Enable night-mode for Slack, using the buildcom fork of slack-night-mode

slack-night-mode

#!/bin/bash

if [ -f '/usr/lib/slack/resources/app.asar.unpacked/src/static/ssb-interop.js' ]; then
  target='/usr/lib/slack/resources/app.asar.unpacked/src/static/ssb-interop.js'
elif [ -f '/Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static/ssb-interop.js' ]; then
  target='/Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static/ssb-interop.js'
fi

if [ "z${target}" = "z" ]; then
  echo 'Unsupported platform or Slack is not installed'
  exit 1
fi

if [ "$(pidof slack)" != "" ]; then
  echo 'Please close Slack'
  exit 2
fi

if [ $(grep -c 'slack-night-mode' $target) -eq 0 ]; then
  sudo cp "${target}" "${target}.bak"
  cat <<EOF| sudo tee -a $target > /dev/null
document.addEventListener('DOMContentLoaded', function() {
 \$.ajax({
   url: 'https://raw.githubusercontent.com/buildcom/slack-night-mode/master/css/raw/black.css',
   success: function(css) {
     \$("<style></style>").appendTo('head').html(css);
   }
 });
});
EOF
  echo 'Set up complete'
else
  echo 'Already set up'
fi