#!/bin/bash

git checkout master
git fetch
git remote prune origin
git branch --merged master | grep -v 'master$' | xargs git branch -d

REMOVABLE=$(git branch -r --merged master \
  | sed 's/ *origin\///' \
  | grep -v 'master$' \
  | grep -v 'production$' \
  | grep -v 'staging$' \
  | grep -v '^release' \
  | grep -v 'next$'
)

if [[ -z "$REMOVABLE" ]]; then
  exit 0
fi

echo "The following remote branches are fully merged and will be removed:"
for branch in $REMOVABLE; do
  echo "$branch"
done

read -p "Continue (y/n)? " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]; then
  echo "$REMOVABLE" | xargs git push origin --delete
fi