#!/usr/bin/env bash

function get_time_ms {
  date -u +%s%3N
}

icons=("󰤯" "󰤟" "󰤢" "󰤥" "󰤨")

function toggle() {
  status=$(rfkill | grep wlan | awk '{print $4}')

  if [ "$status" = "unblocked" ]; then
    rfkill block wlan
  else
    rfkill unblock wlan
  fi
}

function gen_wifi() {
  signal=$(cat /proc/net/wireless | head -n3 | tail -n1 | awk '{print $3}')
  level=$(awk -v n="$signal" 'BEGIN{print int((n-1)/20)}')
  if [ "$level" -gt 4 ]; then
    level=4
  fi

  icon=${icons[$level]}
  color="#cba6f7"
  class="net-connected"
  name=$(wpa_cli status | grep \^ssid= | sed 's/ssid=//g')
}

function gen_ethernet() {
  icon="󰈀"
  class="net-connected"
  color="#cba6f7"
  name=Wired
}

function make_content() {
  local ethernet wifi
  ethernet=$(ip link | rg "^[0-9]+: en[po]+" | head -n1 | sed 's/[a-zA-Z0-9_,><:\ -]*state //g' | sed 's/ mode [a-zA-Z0-9 ]*//g')
  wifi=$(wpa_cli status | rg "^wpa_state=" | sed 's/wpa_state=//g')

  # test ethernet first
  if [[ $ethernet == "UP" ]]; then
    gen_ethernet
  elif [[ $wifi == "COMPLETED" ]]; then
    gen_wifi
  else
    icon="󰤮"
    color="#988ba2"
    class="net-disconnected"
    name="Disconnected"
  fi

  echo '{"icon": "'$icon'", "name": "'$name'", "color": "'$color'", "class": "'$class'"}'
}

if [ "$1" = "toggle" ]; then
  toggle
else
  last_time=$(get_time_ms)
  make_content
  ip monitor | while read -r _; do
    current_time=$(get_time_ms)
    delta=$((current_time - last_time))
    if [[ $delta -gt 50 ]]; then
      make_content
      last_time=$(get_time_ms)
    fi
  done
fi