#!/bin/bash

REMOTE="${1:-origin}"
BRANCH="${2:-master}"
if [[ "$3" = "-n" ]]; then
  DRY_RUN=1
else
  DRY_RUN=0
fi

MERGED_BRANCHES=$(git branch -r --merged |
  grep "\b${REMOTE}/" |
  grep -vE "HEAD|master|${BRANCH}" |
  xargs -L1 |
  sed -e "s/${REMOTE}\///")
if [[ -n "$MERGED_BRANCHES" ]]; then
  echo "Removing merged branches:"
  echo "$MERGED_BRANCHES"
  if [[ $DRY_RUN -eq 0 ]]; then
    echo "$MERGED_BRANCHES" | xargs git push "$REMOTE" --delete
  fi
else
  echo "No branches to remove"
fi