.bash_prompt

#!/usr/bin/env bash

# Heavily inspired by @mathiasbynens’s prompt: https://github.com/mathiasbynens/dotfiles
# iTerm → Profiles → Text → use 14pt Monaco

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
	if [[ $(tput colors) -ge 256 ]] 2>/dev/null; then
		# These colors take presidence - see tput color tables for adjustments
		MAGENTA=$(tput setaf 9)
		ORANGE=$(tput setaf 172)
		#GREEN=$(tput setaf 190)
		GREEN=$(tput setaf 84)
		PURPLE=$(tput setaf 141)
		#PURPLE=$(tput setaf 171)
		WHITE=$(tput setaf 256)
	else
		MAGENTA=$(tput setaf 5)
		ORANGE=$(tput setaf 4)
		GREEN=$(tput setaf 2)
		PURPLE=$(tput setaf 1)
		WHITE=$(tput setaf 7)
	fi
	BOLD=$(tput bold)
	RESET=$(tput sgr0)
else
	MAGENTA="\033[1;31m"
	ORANGE="\033[1;33m"
	GREEN="\033[1;32m"
	PURPLE="\033[1;35m"
	WHITE="\033[1;37m"
	BOLD=""
	RESET="\033[m"
fi

export MAGENTA
export ORANGE
export GREEN
export PURPLE
export WHITE
export BOLD
export RESET

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}${2}${s}";
	else
		return;
	fi;
}

# Set the terminal title and prompt.
# Default colors - works well with Base16 Ocean
#PS1="\[${BOLD}${ORANGE}\]\u: \[\033[37m\]in \[\033[0;36m\]\w\[\033[37m\]\$([[ -n \$(git branch 2> /dev/null) ]] && echo \" on \")\[${MAGENTA}\]\$(prompt_git)\n\\[${BOLD}\033[37m\]$ \[$RESET\]"
# Dracula theme colors
PS1="\[${BOLD}${PURPLE}\]\u: \[\033[37m\]in \[${GREEN}\]\w\[\033[37m\]\$([[ -n \$(git branch 2> /dev/null) ]] && echo \" on \")\[${MAGENTA}\]\$(prompt_git)\n\\[${BOLD}\033[37m\]$ \[$RESET\]"
# Dracula theme colors - Alt
#PS1="\[${BOLD}${PURPLE}\]\u: \[\033[37m\]in \[\033[01;34m\]\w\[\033[37m\]\$([[ -n \$(git branch 2> /dev/null) ]] && echo \" on \")\[${GREEN}\]\$(prompt_git)\n\\[${BOLD}\033[37m\]$ \[$RESET\]"