.bash_prompt

# credit to :
#           https://github.com/necolas/dotfiles/blob/master/shell/bash_prompt
#           http://brettterpstra.com/2009/11/17/my-new-favorite-bash-prompt/
# Color ref: http://vim.wikia.com/wiki/Xterm256_color_names_for_console_Vim
# More tips: http://www.cyberciti.biz/tips/howto-linux-unix-bash-shell-setup-prompt.html

prompt_git() {
    local s=""
    local branchName=""

    # check if the current directory is in a git repository
    if [ $(git rev-parse --is-inside-work-tree &>/dev/null; printf "%s" $?) == 0 ]; then

        # check if the current directory is in .git before running git checks
        #if [ "$(git rev-parse --is-inside-git-dir 2> /dev/null)" == "false" ]; then
        #    # ensure index is up to date
        #    git update-index --really-refresh  -q &>/dev/null
        #    # check for uncommitted changes in the index
        #    if ! $(git diff --quiet --ignore-submodules --cached); then
        #        s="$s+";
        #    fi
        #    # check for unstaged changes
        #    if ! $(git diff-files --quiet --ignore-submodules --); then
        #        s="$s!";
        #    fi
        #    # check for untracked files
        #    if [ -n "$(git ls-files --others --exclude-standard)" ]; then
        #        s="$s?";
        #    fi
        #    # check for stashed files
        #    if $(git rev-parse --verify refs/stash &>/dev/null); then
        #        s="$s$";
        #    fi
        #fi

        # get the short symbolic ref
        # if HEAD isn't a symbolic ref, get the short SHA
        # otherwise, just give up
        branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
                      git rev-parse --short HEAD 2> /dev/null || \
                      printf "(unknown)")"

        [ -n "$s" ] && s=" [$s]"

        printf "%s" "$1$branchName$s"
    else
        return
    fi
}

set_prompts() {
    local black=""
    local blue=""
    local bold=""
    local cyan=""
    local green=""
    local orange=""
    local purple=""
    local red=""
    local reset=""
    local white=""
    local yellow=""

    local hostStyle=""
    local userStyle=""

    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
        tput sgr0 # reset colors

        bold=$(tput bold)
        reset=$(tput sgr0)

        # Solarized colors
        # (https://github.com/altercation/solarized/tree/master/iterm2-colors-solarized#the-values)
        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=$(tput setaf 124)
        white=$(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"
        white="\e[1;37m"
        yellow="\e[1;33m"
    fi

    # build the prompt

    # logged in as root
    if [[ "$USER" == "root" ]]; then
        userStyle="\[$bold$red\]"
    else
        userStyle="\[$orange\]"
    fi

    # connected via ssh
    if [[ "$SSH_TTY" ]]; then
        hostStyle="\[$bold$red\]"
    else
        hostStyle="\[$yellow\]"
    fi

    # add detail to prompt
    PS1="\n" # newline
    PS1+="\[$userStyle\]\u" # username
    PS1+="\[$reset$white\]@"
    PS1+="\[$hostStyle\]\h" # host
    PS1+="\[$reset$white\]:"
    PS1+="\[$green\]\w" # working directory
    PS1+="\$(prompt_git \"$white on $cyan\") " # git repository details
    PS1+="\[$purple\]\D{%F %T}"
    PS1+="\n"
    PS1+="\[$reset$white\]\$ \[$reset\]" # $ (and reset color)

    export PS1;
}

set_prompts
unset set_prompts

# mac iterm tab name change
if [ $ITERM_SESSION_ID ]; then
    export PROMPT_COMMAND='echo -ne "\033]0; ${PWD}\007"';
fi