prompt line.sh

pathColor="\033[38;2;104;169;196m"
errColor="\033[38;2;255;60;60m"
sucColor="\033[38;2;152;82;173m"
resetColor="\033[m"

if ((EUID)); then
  userColor="\033[38;2;201;116;173m"
  userSymbol='$'
else
  userColor="\033[37m"
  userSymbol='#'
fi

__command_current_start_ns=""

__last_command_duration_ms=0

__record_command_start_time() {

  case "$BASH_COMMAND" in
  "PROMPT_COMMAND" | "__record_command_start_time" | "__calculate_duration" | "prompt_command") return ;;
  *)

    __command_current_start_ns=$(date +%s%N)
    ;;
  esac
}

__calculate_duration() {
  local end_ns=$(date +%s%N)

  if [[ -n "${__command_current_start_ns:-}" ]]; then
    local duration_ns=$((end_ns - __command_current_start_ns))
    __last_command_duration_ms=$((duration_ns / 1000000))
    unset __command_current_start_ns
  else

    __last_command_duration_ms=0
  fi
}

prompt_command() {
  local PS1_string=""

  local display_pwd="$PWD"

  [[ "$PWD" =~ ^$HOME ]] && display_pwd="~${PWD#$HOME}"

  PS1_string+="\[$userColor\]$USER \[$pathColor\]$display_pwd\[$resetColor\]"

  local branch="$(git rev-parse --abbrev-ref HEAD 2>/dev/null)"
  local tag="$(git describe --tags --abbrev=0 2>/dev/null)"

  if [[ -n "$branch" ]]; then
    if [[ "$branch" != "HEAD" && "$branch" != "main" && "$branch" != "master" ]]; then
      PS1_string+=" \[\033[2m\]$branch\[$resetColor\]"
    fi

    PS1_string+=" \[\033[38;2;243;79;41m\]\[$resetColor\]\[\033[2m\]"
    if [[ -n "$tag" ]]; then
      PS1_string+="(""$tag"")"
    fi
    PS1_string+="\[$resetColor\]"
  fi

  local display_duration=""
  local duration_ms="${__last_command_duration_ms}"

  local second=1000
  local minute=60000
  local hour=3600000
  local day=86400000

  if ((duration_ms >= 0)); then
    if ((duration_ms < second)); then
      printf -v display_duration "%5dms" "$duration_ms"
    elif ((duration_ms < minute)); then
      local s_int=$((duration_ms / second))
      local s_dec=$(((duration_ms % second) / 10))
      printf -v display_duration "%2d.%02ds " "$s_int" "$s_dec"
    elif ((duration_ms < hour)); then
      local m=$((duration_ms / minute))
      local s=$((duration_ms % minute / second))
      printf -v display_duration "%2dm %2ds" "$m" "$s"
    elif ((duration_ms < day)); then
      local h=$((duration_ms / hour))
      local m=$((duration_ms % hour / minute))
      printf -v display_duration "%2dh %2dm" "$h" "$m"
    elif ((duration_ms < 100 * day)); then
      local d=$((duration_ms / day))
      local h=$((duration_ms % day / hour))
      printf -v display_duration "%2dd %2dh" "$d" "$h"
    else
      local d=$((duration_ms / day))
      printf -v display_duration "%6dd" "$d"
    fi

    PS1_string+=" \[\033[38;2;219;118;249m\]$display_duration\[$resetColor\]"
  fi

  local status_color
  if (($?)); then
    status_color="$errColor"
  else
    status_color="$sucColor"
  fi

  PS1_string+=" \[$status_color\]$userSymbol\[$resetColor\]"

  PS1="${PS1_string} "
}

trap '__record_command_start_time' DEBUG

PROMPT_COMMAND='__calculate_duration; prompt_command'

PS4="-[\033[33m${BASH_SOURCE[0]%.sh}\033[m: \033[32m$LINENO\033[m]\
  ${FUNCNAME:+${FUNCNAME[0]}(): }"