import i3bar_base
import std/os
import std/osproc
import std/threadpool
import strutils

const nics: seq[string] = @["wlan0", "enp3s0","wlp2s0","enp0s20f0u3"]

# /sys/class/net/*/operstate up or down if connected

proc get_ip(nic: string): string =
  let cmd = "ifconfig " & nic & " | grep inet | awk -F\" \" '{print $2}' | head -1 | awk '{print $1}'" 
  let ip = execCmdEx(cmd)
  return strip(ip.output)

proc get_online_state(nic: string): string =
  let oper = readFile("/sys/class/net/" & nic & "/operstate")
  let state = strip(oper)
  return "[" & state & "]"

proc get_net(nic: string): (string, string) =
  let state = get_online_state(nic)
  let ip = get_ip(nic)
  if state == "[down]" or ip == "":
    return ("disconnected", state)
  return (ip, state)

proc getObject(conn: string): i3barData =
  var data = newi3barData()
  data.full_text = conn
  data.border = purple
  return data

proc get_net_info(nic: string)  =
  var last_ip = ""
  var last_state = ""
  while true:
    let (ip, state) = get_net(nic)
    if ip != last_ip or state != last_state:
      let data = getObject(state & " " & ip)
      outputJSON(data)
    last_ip = ip
    last_state = state
    sleep(1000)

proc await_click_info() =
  while true:
    let input = parseInput()
    if input.button == 1:
      discard execCmd("alacritty -e nmtui-connect")

proc get_nic(): string =
  for nic in nics:
    if dirExists("/sys/class/net/" & nic):
      return nic
  return "no-nic"

proc main() =
  let mynic = get_nic()
  if dirExists("/sys/class/net/" & mynic):
    spawn get_net_info(mynic)
    spawn await_click_info()
    sync()
  else:
    echo "No NIC"

main()