prompt

# -*- mode: sh; -*-
# vi: set ft=sh :

# TODO: encapsulate krey (chalk) theme
# TODO: encapsulate zenburn theme

# Reset
color_off='\e[0m'

# Regular Colors
black='\e[0;30m'
red='\e[0;31m'
green='\e[0;32m'
yellow='\e[0;33m'
blue='\e[0;34m'
purple='\e[0;35m'
cyan='\e[0;36m'
white='\e[0;37m'

# Bold
b_black='\e[1;30m'
b_red='\e[1;31m'
b_green='\e[1;32m'
b_yellow='\e[1;33m'
b_blue='\e[1;34m'
b_purple='\e[1;35m'
b_cyan='\e[1;36m'
b_white='\e[1;37m'

# Underlined
u_black='\e[4;30m'
u_red='\e[4;31m'
u_green='\e[4;32m'
u_yellow='\e[4;33m'
u_blue='\e[4;34m'
u_purple='\e[4;35m'
u_cyan='\e[4;36m'
u_white='\e[4;37m'

# Background
on_black='\e[40m'
on_red='\e[41m'
on_green='\e[42m'
on_yellow='\e[43m'
on_blue='\e[44m'
on_purple='\e[45m'
on_cyan='\e[46m'
on_white='\e[47m'

# High Intensity
i_black='\e[0;90m'
i_red='\e[0;91m'
i_green='\e[0;92m'
i_yellow='\e[0;93m'
i_blue='\e[0;94m'
i_purple='\e[0;95m'
i_cyan='\e[0;96m'
i_white='\e[0;97m'

# Bold High Intensity
b_i_black='\e[1;90m'
b_i_red='\e[1;91m'
b_i_green='\e[1;92m'
b_i_yellow='\e[1;93m'
b_i_blue='\e[1;94m'
b_i_purple='\e[1;95m'
b_i_cyan='\e[1;96m'
b_i_white='\e[1;97m'

# High Intensity Backgrounds
on_i_black='\e[0;100m'
on_i_red='\e[0;101m'
on_i_green='\e[0;102m'
on_i_yellow='\e[0;103m'
on_i_blue='\e[0;104m'
on_i_purple='\e[0;105m'
on_i_cyan='\e[0;106m'
on_i_white='\e[0;107m'

# These next two conditionals don't really work but the prompt
# depends on them to look the way it does, so! refactor please...

# Highlight the user name when logged in as root.
if [[ "${USER}" == 'root' ]]; then
  user_style="${on_i_red}";
else
  user_style="${b_yellow}";
fi;

# Highlight the hostname when connected via SSH.
if [[ "${SSH_TTY}" ]]; then
  host_style="${u_red}";
else
  host_style="${b_yellow}";
 fi;

# if [[ "${IS_OSX}" == true ]]; then
#   _host=$(scutil --get ComputerName);
# else
#   _host=$(hostname)
# fi;

_vcprompt_hash() {
  if git-in-repo >/dev/null 2>&1; then
    git rev-parse --short=0 HEAD
  fi
}

_print_if_vcs() {
  if git-in-repo >/dev/null 2>&1; then
    echo "$1"
  fi
}

_git_stats() {
  local _diffs _untracked
  if git-in-repo >/dev/null 2>&1; then
    _diffs=$(git status --porcelain 2>/dev/null | $GREPPAGE "M" | gwc -l)
    _untracked=$(git status --porcelain 2>/dev/null | $GREPPAGE "\?\?" | gwc -l)
    if [[ $_diffs != 0 ]] || [[ $_untracked != 0 ]]; then
      printf ' -> %s:%s' "$_diffs" "$_untracked"
    fi
  fi
}

PS1="\[${user_style}\]\u\[${blue}\]@\[${host_style}\]\h"; # User and host
PS1+="\[${blue}\](\[${yellow}\]\w\[${blue}\])"; # Current working directory
PS1+="\[${green}\]\$(vcprompt -f ' %b')";
PS1+="\[${white}\]\$(_print_if_vcs '|')";
PS1+="\[${i_red}\]\$(_vcprompt_hash)";
PS1+="\[${white}\]\$(_git_stats)";
PS1+="\n\[${i_purple}\]\$\[${white}\] "; # Dollar prompt and command