-- a bot that can be turned on and off. and report its status.

function loadFunctionOnInput(sID)
  local env = {}
  setmetatable(env, {__index=function(o, k) return _G[k] end })
  assert(input, 'no input')
  assert(_G.input, 'no input in _G')
  assert(env.input, 'no input in sub-env')
  return assert(loadSnippet(sID, env))
end

function loadOneArgFunction(sID)
  local env = {}
  setmetatable(env, {__index=function(o, k) return _G[k] end })
  local f = assert(loadSnippet(sID, env))
  f()
  for k, v in pairs(env) do
    if type(v) == 'function' then
      return v
    end
  end

  error('no function found in '..sID)
end

is_TURN_ON = loadFunctionOnInput("#55")
is_TURN_OFF = loadFunctionOnInput("#56")
is_ARE_YOU_ON = loadFunctionOnInput("#62")
renderIntention = loadOneArgFunction("#63")

if is_TURN_ON() then
  state.on = true
elseif is_TURN_OFF() then
  state.on = false
elseif is_ARE_YOU_ON() then
  -- proceed
else
  return ''
end

return renderIntention(state.on and 'I AM ON' or 'I AM OFF')