started = 0
our_id = 0

function vardump(value, depth, key)
  local linePrefix = ""
  local spaces = ""

  if key ~= nil then
    linePrefix = "["..key.."] = "
  end

  if depth == nil then
    depth = 0
  else
    depth = depth + 1
    for i=1, depth do spaces = spaces .. "  " end
  end

  if type(value) == 'table' then
    mTable = getmetatable(value)
    if mTable == nil then
      print(spaces ..linePrefix.."(table) ")
    else
      print(spaces .."(metatable) ")
        value = mTable
    end
    for tableKey, tableValue in pairs(value) do
      vardump(tableValue, depth, tableKey)
    end
  elseif type(value)	== 'function' or
      type(value)	== 'thread' or
      type(value)	== 'userdata' or
      value		== nil
  then
    print(spaces..tostring(value))
  else
    print(spaces..linePrefix.."("..type(value)..") "..tostring(value))
  end
end

print ("HI, this is lua script")

function ok_cb(extra, success, result)
end

-- Notification code {{{

function get_title (P, Q)
  if (Q.type == 'user') then
    return P.first_name .. " " .. P.last_name
  elseif (Q.type == 'chat') then
    return Q.title
  elseif (Q.type == 'encr_chat') then
    return 'Secret chat with ' .. P.first_name .. ' ' .. P.last_name
  else
    return ''
  end
end

local lgi = require ('lgi')
local notify = lgi.require('Notify')
notify.init ("Telegram updates")
local icon = os.getenv("HOME") .. "/.telegram-cli/telegram-pics/telegram_64.png"

function do_notify (user, msg)
  local n = notify.Notification.new(user, msg, icon)
  n:show ()
end

-- }}}

function on_msg_receive (msg)
  if started == 0 then
    return
  end
  if msg.out then
    return
  end

-- Damit der "gelesen hacken" erscheint...
if msg.text then
mark_read (msg.from.print_name, ok_cb, false)
end

-- ggf. nur eine Rufnummer zulassen...
if msg.from.print_name ~= 'Kontakt_name' then
os.execute("/home/pi/tg/send_script ".. msg.from.print_name .." 'Ungueltige Berechtigung...'")
return
end
if (string.lower(msg.text) == 'uptime') then
local handle = io.popen("sudo python /home/pi/tg/tg_steuerung.py uptime")
local res = handle:read("*a")
handle:close()
os.execute("/home/pi/tg/send_script ".. msg.from.print_name .." '"..res.."' ")
--Alternativ:
--send_msg (msg.from.print_name, res)
return
elseif (string.lower(msg.text) == 'shutdown') then
local handle = io.popen("sudo python /home/pi/tg/tg_steuerung.py shutdown")
local res = handle:read("*a")
os.execute("/home/pi/tg/send_script "..msg.from.print_name.." '"..res.."' ")
handle:close()
return
elseif (string.lower(msg.text) == 'reboot') then
local handle = io.popen("sudo python /home/pi/tg/tg_steuerung.py reboot")
local res = handle:read("*a")
handle:close()
os.execute("/home/pi/tg/send_script ".. msg.from.print_name .." '"..res.."' ")
return
else
os.execute("/home/pi/tg/send_script ".. msg.from.print_name .." 'Fehler' ")
end
end

  do_notify (get_title (msg.from, msg.to), msg.text)


  if (msg.text == 'ping') then
    if (msg.to.id == our_id) then
      send_msg (msg.from.print_name, 'pong', ok_cb, false)
    else
      send_msg (msg.to.print_name, 'pong', ok_cb, false)
    end
    return
  end
  if (msg.text == 'PING') then
    if (msg.to.id == our_id) then
      fwd_msg (msg.from.print_name, msg.id, ok_cb, false)
    else
      fwd_msg (msg.to.print_name, msg.id, ok_cb, false)
    end
    return
  end
end

function on_our_id (id)
  our_id = id
end

function on_user_update (user, what)
  --vardump (user)
end

function on_chat_update (chat, what)
  --vardump (chat)
end

function on_secret_chat_update (schat, what)
  --vardump (schat)
end

function on_get_difference_end ()
end

function cron()
  -- do something
  postpone (cron, false, 1.0)
end

function on_binlog_replay_end ()
  started = 1
  postpone (cron, false, 1.0)
end