now you're sorry you said anything

-- only run if we know the PC name
if not m or not m.pc_name then return end

cnl_chars = cnl_chars or {}
cnl_chars.afk = cnl_chars.afk or {}

-- detect new login (pc_name change)
if cnl_chars.afk.pc_name ~= m.pc_name then
  cnl_chars.afk = { pc_name = m.pc_name }
end

local c = cnl_chars.afk
local now = getEpoch()
local idle = now - (m.conn_cmd_ts or now) -- default now if nil
local x = 3.5 * 60  -- idle threshold

-- initialize if needed
c.start              = c.start or now
c.state              = c.state or "active"
c.last_cmd           = c.last_cmd or (m.conn_cmd_ts or now)
c.last_state_change  = c.last_state_change or now
c.total_afk          = c.total_afk or 0
c.total_active       = c.total_active or 0

-- helper: close current segment
local function close_segment(new_state)
  local seg_time = now - c.last_state_change
  if c.state == "active" then
    c.total_active = c.total_active + seg_time
  elseif c.state == "afk" then
    c.total_afk = c.total_afk + seg_time
  end
  c.state = new_state
  c.last_state_change = now
end

-- detect transitions
if c.state == "active" and idle > x then
  cecho("<red>AFK started!\n")
  close_segment("afk")
elseif c.state == "afk" and m.conn_cmd_ts > c.last_cmd then
  cecho("<green>AFK ended!\n")
  close_segment("active")
end

-- update last_cmd if new command arrived
if m.conn_cmd_ts > c.last_cmd then
  c.last_cmd = m.conn_cmd_ts
end

-- totals (include current open segment)
local total_time = now - c.start
local active_time, afk_time = c.total_active, c.total_afk
if c.state == "active" then
  active_time = active_time + (now - c.last_state_change)
elseif c.state == "afk" then
  afk_time = afk_time + (now - c.last_state_change)
end

local percent_afk = (afk_time / total_time) * 100

-- optional display while AFK
if c.state == "afk" then
  cecho(string.format("<ansi_cyan>[%s: %.1f%% AFK]\n", m.pc_name, percent_afk))
end