bash_ps1

PS0='$(perl -MTime::HiRes=time -e '"'"'printf "%.3f\n", time'"'"' > /tmp/cmd_start_$$)'

format_duration() {
	local ms=$1
	if [ $ms -lt 1000 ]; then
		printf "%dms" $ms
		return
	fi

	local total_seconds=$(($ms / 1000))
	local millis=$(($ms % 1000))
	local hours=$(($total_seconds / 3600))
	local minutes=$((($total_seconds % 3600) / 60))
	local seconds=$(($total_seconds % 60))

	if [ $hours -gt 0 ]; then
		printf "%dh%dm%d.%03ds" $hours $minutes $seconds $millis
	elif [ $minutes -gt 0 ]; then
		printf "%dm%d.%03ds" $minutes $seconds $millis
	else
		if [ $millis -eq 0 ]; then
			printf "%ds" $seconds
		else
			printf "%d.%03ds" $seconds $millis
		fi
	fi
}

get_formatted_path() {
	echo "$PWD" | sed "s|^$HOME|~|"
}

precmd() {
	local EXIT="$?"
	local duration="0ms"
	if [ -f /tmp/cmd_start_$$ ]; then
		local start=$(<"/tmp/cmd_start_$$")
		local current=$(perl -MTime::HiRes=time -e 'printf "%.3f\n", time')
		local ms=$(printf "%.0f" $(echo "($current - $start) * 1000" | bc))
		duration=$(format_duration $ms)
		rm -f /tmp/cmd_start_$$
	fi
	local PROMPT_COLOR=\\[\\e[32m\\]
	[[ "$EXIT" != "0" ]] && PROMPT_COLOR=\\[\\e[31m\\]
	PS1="\e[1m\[\e[34m\]$(get_formatted_path)\[\e[32m\]$(parse_git_branch)\[\e[0m\] ⏱ ${duration}\n${PROMPT_COLOR}❯\[\e[0m\] "
}

PROMPT_COMMAND=precmd

parse_git_branch() {
	git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}