local MIN_DBM, MAX_DBM = -90, -20
local NGAUGE = 5
local COLOR_DIM = '#709080'

local function round(x)
    return math.floor(x + 0.5)
end

local function make_wifi_gauge(dbm)
    if dbm < MIN_DBM then dbm = MIN_DBM end
    if dbm > MAX_DBM then dbm = MAX_DBM end
    local nbright = round(NGAUGE * (1 - 0.7 * (MAX_DBM - dbm) / (MAX_DBM - MIN_DBM)))

    if nbright == 0 then
      return "󰤭"
    elseif nbright == 1 then
      return "󰤯"
    elseif nbright == 2 then
      return "󰤟"
    elseif nbright == 3 then
      return "󰤢"
    elseif nbright == 4 then
      return "󰤥"
    else
      return "󰤨"
    end
end

widget = {
    plugin = 'network-linux',
    opts = {
        wireless = true,
        timeout = 10,
    },
    cb = function(t)
        if not t then
            return nil
        end

        local x = ""
        local sep = "  "

        if t.eno1 then
            if t.eno1.ipv4 or t.eno1.ipv6 then
                x = ""
            end
        end

        if t.enp5s0f3u1 then
            if x ~= "" then
              x = x .. sep 
            end
            if t.enp5s0f3u1.ipv4 or t.enp5s0f3u1.ipv6 then
                x = x .. "󱎔"
            end
        end

        if t.wlo1.wireless then
            if x ~= "" then
              x = x .. sep 
            end
            if t.wlo1.wireless.signal_dbm then
                x = x .. make_wifi_gauge(t.wlo1.wireless.signal_dbm)
            else
                x = x .. "󰤭"
            end
        end

        x = " " .. x .. "  "
        return x
    end,
}