#####        GIT PROMPT

        RED="\[\033[0;31m\]"
     YELLOW="\[\033[0;33m\]"
      GREEN="\[\033[0;32m\]"
       BLUE="\[\033[0;34m\]"
  LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
      WHITE="\[\033[1;37m\]"
 LIGHT_GRAY="\[\033[0;37m\]"
 COLOR_NONE="\[\e[0m\]"

function parse_git_branch {
  git rev-parse --git-dir &> /dev/null
  git_status="$(git status 2> /dev/null)"
  branch_pattern="^On branch ([^${IFS}]*)"
  remote_pattern="Your branch is (behind|ahead)"
  diverge_pattern="Your branch and (.*) have diverged"

  if [[ ! ${git_status}} =~ working\ (directory|tree)\ clean ]]; then
    state="${RED}X"
  fi
  # add an else if or two here if you want to get more specific
  if [[ ${git_status} =~ ${remote_pattern} ]]; then
    if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
      remote="${YELLOW}↑"
    else
      remote="${YELLOW}↓"
    fi
  fi
  if [[ ${git_status} =~ ${diverge_pattern} ]]; then
    remote="${YELLOW}↕"
  fi
  if [[ ${git_status} =~ ${branch_pattern} ]]; then
    branch=${BASH_REMATCH[1]//[^a-zA-Z0-9_\/\.-]/*} # only allow safe characters see https://github.com/njhartwell/pw3nage
    echo " (${branch})${remote}${state}"
  fi
}

function prompt_func() {
  # show last exit status
  if test $? -eq 0
  then
    status="➔ "
  else
    status="${RED}➔${COLOR_NONE} "
  fi

  # show host on remote servers
  host=$(hostname)
  if [[ $host != *"G9MK336W2P"* ]]; then
    host="${host} - "
  else
    host=""
  fi

  prompt="${host}${TITLEBAR}${BLUE}[${COLOR_NONE}\w${GREEN}$(parse_git_branch)${BLUE}]${COLOR_NONE} ${status}"

  PS1=$prompt

  # amend the session history to the history file so that new terminals have all the history of the other terminals
  history -a
}

export PROMPT_COMMAND=prompt_func 2>/dev/null
