.bash_prompt

#!/usr/bin/env bash

#only load if we don't have statship

if which starship > /dev/null; then
  # do nothing basically
  echo "loading starship" 1> /dev/null;
else
  #echo "loading backup promt";

  # Shell prompt based on the Solarized Dark theme.
  # Screenshot: http://i.imgur.com/EkEtphC.png
  # Heavily inspired by @necolas’s prompt: https://github.com/necolas/dotfiles
  # iTerm → Profiles → Text → use 13pt Monaco with 1.1 vertical spacing.

  if [[ $COLORTERM = gnome-* && $TERM = xterm ]] && infocmp gnome-256color >/dev/null 2>&1; then
    export TERM='gnome-256color';
  elif infocmp xterm-256color >/dev/null 2>&1; then
    export TERM='xterm-256color';
  fi;

  function prompt_git() {

      local s='';
      # this is >5x faster now

      # check if we're in a git repo. (fast)
      git rev-parse --is-inside-work-tree &>/dev/null || return

      # check for what branch we're on. (fast)
      #   if… HEAD isn’t a symbolic ref (typical branch),
      #   then… get a tracking remote branch or tag
      #   otherwise… get the short SHA for the latest commit
      #   lastly just give up.
      branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
          git describe --all --exact-match HEAD 2> /dev/null || \
          git rev-parse --short HEAD 2> /dev/null || \
          echo '(unknown)')";


          # Ensure the index is up to date.
          git update-index --really-refresh -q &>/dev/null;

          # Check for uncommitted changes in the index.
          if ! $(git diff --quiet --ignore-submodules --cached); then
            s+='+';
          fi;

          # Check for unstaged changes.
          if ! $(git diff-files --quiet --ignore-submodules --); then
            s+='!';
          fi;

          # Check for untracked files.
          if [ -n "$(git ls-files --others --exclude-standard)" ]; then
            s+='?';
          fi;

          # Check for stashed files.
          if $(git rev-parse --verify refs/stash &>/dev/null); then
            s+='$';
          fi;

      [ -n "${s}" ] && s=" [${s}]";
      echo -e "${1}${branchName}${blue}${s}";

      return
  }

  if tput setaf 1 &> /dev/null; then
    tput sgr0; # reset colors
    bold=$(tput bold);
    reset=$(tput sgr0);
    # Solarized colors, taken from http://git.io/solarized-colors.
    black=$(tput setaf 0);
    blue=$(tput setaf 33);
    cyan=$(tput setaf 37);
    green=$(tput setaf 64);
    orange=$(tput setaf 166);
    purple=$(tput setaf 125);
    red=$(tput setaf 124);
    violet=$(tput setaf 61);
    white=$(tput setaf 15);
    yellow=$(tput setaf 136);
  else
    bold='';
    reset="\e[0m";
    black="\e[1;30m";
    blue="\e[1;34m";
    cyan="\e[1;36m";
    green="\e[1;32m";
    orange="\e[1;33m";
    purple="\e[1;35m";
    red="\e[1;31m";
    violet="\e[1;35m";
    white="\e[1;37m";
    yellow="\e[1;33m";
  fi;

  # Highlight the user name when logged in as root.
  if [[ "${USER}" == "root" ]]; then
    userStyle="${red}";
  else
    userStyle="${orange}";
  fi;

  # Highlight the hostname when connected via SSH.
  if [[ "${SSH_TTY}" ]]; then
    hostStyle="${bold}${red}";
  else
    hostStyle="${yellow}";
  fi;

  # Set the terminal title and prompt.
  PS1="\[\033]0;\W\007\]"; # working directory base name
  PS1+="\[${bold}\]\n"; # newline
  PS1+="\[${userStyle}\]\u"; # username
  PS1+="\[${white}\] at ";
  PS1+="\[${hostStyle}\]\h"; # host
  PS1+="\[${white}\] in ";
  PS1+="\[${green}\]\w"; # working directory full path
  PS1+="\$(prompt_git \"\[${white}\] on \[${violet}\]\" \"\[${blue}\]\")"; # Git repository details
  PS1+="\n";
  PS1+="\[${white}\]\$ \[${reset}\]"; # `$` (and reset color)
  export PS1;

  PS2="\[${yellow}\]→ \[${reset}\]";
  export PS2;

fi;