#!/usr/bin/env bash

UI_ROW_WIDTH=${UI_ROW_WIDTH:-20}
UI_SECTION_WIDTH=${UI_SECTION_WIDTH:-44}

function ui::row() {
  local label="$1" value="$2" width="${3:-$UI_ROW_WIDTH}"
  printf "  %-${width}s %s\n" "${label}:" "$value"
}

function ui::section() {
  local title="$1" width="${2:-$UI_SECTION_WIDTH}"
  local dashes
  dashes=$(printf '─%.0s' $(seq 1 $(( width - ${#title} - 4 ))))
  printf "\n  \033[0;37m── %s %s\033[0m\n" "$title" "$dashes"
}

function ui::list_item() {
  local prefix="$1" value="$2"
  printf "    %s %s\n" "$prefix" "$value"
}

function ui::print_list() {
  local prefix="$1" input="$2"
  [[ -z "$input" ]] && return 0  # early return for empty input
  while IFS= read -r e; do
    [[ -n "$e" ]] && ui::list_item "$prefix" "$e"
  done <<< "$input"
}

function ui::divider() {
  local width="${1:-48}"
  printf "  %s\n" "$(printf '─%.0s' $(seq 1 $width))"
}

function ui::pad() {
  local text="$1" width="${2:-20}"
  local visible
  visible=$(echo -e "$text" | sed 's/\x1b\[[0-9;]*m//g')
  local pad=$(( width - ${#visible} ))
  printf "%b%${pad}s" "$text" ""
}

function ui::firewall_rule() {
  local rule="$1"
  if [[ "$rule" =~ ACCEPT|DNAT ]]; then
    printf "\033[0;32m%s\033[0m\n" "$rule"
  elif [[ "$rule" =~ DROP ]]; then
    printf "\033[0;31m%s\033[0m\n" "$rule"
  elif [[ "$rule" =~ NFLOG|LOG ]]; then
    printf "\033[0;37m%s\033[0m\n" "$rule"
  else
    printf "%s\n" "$rule"
  fi
}