Bash script to "sync" WordPress sites between environments (servers) (For Digizent use)

update.sh

#!/bin/bash

####### Update all this variables #######
repo_dir="rr-huntsville-site"
site_dir="wordpress"
branch="master"
# Update with directories relative to wp-content
pull_dirs="themes uploads"
push_dirs="themes uploads plugins"
####### Stop updating variables #######

action=$1

pull(){
  cd $repo_dir
  echo "Updating repo..."
  git pull
  echo "Exporting repo..."
  git checkout-index -f -a --prefix=$PWD/../exported-repo/
  cd ..
  for dir in $pull_dirs
  do
    echo "Copying exported-repo/wp-content/$dir to $site_dir/wp-content/$dir"
    cp -r exported-repo/wp-content/$dir $site_dir/wp-content/$dir/../
  done
  echo "Done, have a nice day ;)"
}

push(){
  
  for dir in $push_dirs
  do
    echo "Copying $site_dir/wp-content/$dir to $repo_dir/wp-content/$dir"
    cp -r $site_dir/wp-content/$dir $repo_dir/wp-content/$dir/../
  done
  
  cd $repo_dir

  if ! git diff-index --quiet HEAD --; then
    
    echo "Changes detected. Updating repository"
    echo "Be careful, I'm going to add everything I find because I'm not smart enough yet..."
    git add --all
    echo "This is what I'm about to commit"
    git status
    echo "Do you want to proceed? y/n : " 
    
    read proceed
    
    if [[ $proceed = "y" ]]; then
      echo "Making a commit"
      git commit -a -m "Updating from server"
      git push origin $branch
      echo "Done, have a nice day :)"
    else
      echo "Not doing anything."
      exit
    fi
  
  else
    echo "The repository is clean. Nothing to push"
  fi

}

if [[ $action = '' ]]; then
  echo "What should I do? Pull (./update.sh pull) or Push (./update.sh pull)"
  exit
fi

case "$1" in
  "pull") pull ;;
  "push") push ;;
esac

exit