obs = obslua

local wait_time = 7200 -- Wait 2 hours before checks
local idle_time = 120  -- Wait for any input in the last 2 minutes

function script_description()
    return "Automatically restarts the replay buffer when IDLE"
end

function script_load()
  ffi = require("ffi")
  ffi.cdef[[
      void start_hook(void);
      void stop_hook(void);
      int last_time_input_received(void);
    ]]
  monitor = ffi.load(script_path() .. "monitor.dll")

  obs.timer_add(check_restart, wait_time * 1000)
end

function script_unload()
  obs.timer_remove(check_restart)
  obs.timer_remove(check_idle)
end

function check_restart()
  monitor.start_hook()
  obs.timer_add(check_idle, idle_time * 1000)
end

function check_idle()
  local current_time = os.time()
  local last_input_time = monitor.last_time_input_received()

  if current_time - last_input_time >= wait_time then
    monitor.stop_hook()
    obs.timer_remove(check_idle)
    restart_replay_buffer()
  end
end

function restart_replay_buffer()
  obs.obs_frontend_replay_buffer_stop()
  obs.timer_add(start_replay_buffer, 2000)
end

function start_replay_buffer()
  obs.timer_remove(start_replay_buffer)
  obs.obs_frontend_replay_buffer_start()
end