.bash_prompt

# 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;

prompt_git() {
	local s='';
	local branchName='';
	# Check if the current directory is in a Git repository.
	if [ $(git rev-parse --is-inside-work-tree &>/dev/null; echo "${?}") == '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 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;

		fi;

		# Get the short symbolic ref.
		# If HEAD isn’t a symbolic ref, get the short SHA for the latest commit
		# Otherwise, just give up.
		branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
			git rev-parse --short HEAD 2> /dev/null || \
			echo '(unknown)')";

		[ -n "${s}" ] && s=" [${s}]";

		echo -e "${1}${branchName}${blue}${s}";
	else
		return;
	fi;
}

function prompt_virtualenv(){
	local venv='';
	# Get Virtual Env
	if [[ -n "$VIRTUAL_ENV" ]]; then
		# Strip out the path and just leave the env name
		venv="${VIRTUAL_ENV##*/}";
	fi
	[[ -n "$venv" ]] && echo "(venv:$venv) ";
}

function prompt_docker(){
	local docker='';
	# Get docker machine
	if [[ -n "$DOCKER_MACHINE_NAME" ]]; then
		# Strip out the path and just leave the env name
		docker="${DOCKER_MACHINE_NAME}";
	fi
	[[ -n "$docker" ]] && echo "(docker:$docker) ";
}


# Disable the default virtualenv prompt change
export VIRTUAL_ENV_DISABLE_PROMPT=1

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

if tput setaf 1 &> /dev/null; then
	tput sgr0;

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

	black=$(tput setaf 0);
	blue=$(tput setaf 33);
	cyan=$(tput setaf 37);
	green=$(tput setaf 190);
	orange=$(tput setaf 172);
	purple=$(tput setaf 141);
	red=$(tput setaf 124);
	violet=$(tput setaf 61);
	magenta=$(tput setaf 9);
	white=$(tput setaf 8);
	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";
	magenta="\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;

function bash_prompt(){
	local prompt="\[${cyan}\]$(prompt_docker)";
	prompt+="\[${cyan}\]$(prompt_virtualenv)";
	prompt+="\[${userStyle}\]\u"; # username
	prompt+="\[${reset}\] in ";
	prompt+="\[${green}\]\w"; # working directory
	prompt+="\$(prompt_git \"${reset} on ${violet}\")"; # Git repository details
	prompt+="\n";
	prompt+="\[${reset}\]\$ "; # `$` (and reset color)
	[[ -n "${prompt}" ]] && echo -e "${prompt}";
}
export PS1="$(bash_prompt)";

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