local gtimer = require "gears.timer"

gtimer {
    timeout = 1,
    call_now = true,
    autostart = true,
    callback = function()
        local lines = {}
        
        for line in io.lines("/proc/net/wireless") do
            table.insert(lines, line)
        end

        if not lines[3] then 
            awesome.emit_signal("services::wifi", 0, false)
            return
        end

        local strength = lines[3]:match("^%s*(.*)"):match("^.-%s+.-%s+.-(%S+)%.")

        awesome.emit_signal("services::wifi", math.floor(tonumber(strength) * 10 / 7), true)
    end
}