SlackSolorizedDark.sh

#!/bin/bash

FILEPATH=/var/lib/flatpak/app/com.slack.Slack/current/active/files/extra/lib/slack/resources/app.asar.unpacked/src/static/ssb-interop.js

COMMENT_START="//SolorizePatchStart//"
COMMENT_END="//SolorizePatchEnd//"

CODE="
document.addEventListener('DOMContentLoaded', function() {
 $.ajax({
   url: 'https://raw.githubusercontent.com/nakedsushi/solarized-slack/e6bf977ed15d1fdfeb91b354e500a87ce455e985/css/solarized.css',
   success: function(css) {
     \$(\"<style></style>\").appendTo('head').html(css);
   }
 });
});
"

if grep -q "$COMMENT_START" "$FILEPATH"; then
    echo "File $FILEPATH elready patched"
else
  echo "Patching file $FILEPATH"
  echo "$COMMENT_START" >> $FILEPATH
  echo "$CODE" >> $FILEPATH
  echo "$COMMENT_END" >> $FILEPATH
  echo "File patched"
fi