"""Read-only diagnostic boundaries; no native control/application proof."""
from pathlib import Path
import subprocess
import sys
import tempfile
import unittest
from policy_harness import body
ROOT=Path(__file__).resolve().parents[1]
SOURCE=ROOT/'addons/core/Scripts/Game/ERR/00_Core/ERR_NativeFlightInputDiagnostics.c'

class FlightInputDiagnostics(unittest.TestCase):
 def test_observers_have_no_control_or_setting_mutators(self):
  source=SOURCE.read_text()
  self.assertTrue(source.startswith('#ifdef WORKBENCH'))
  for forbidden in ['.Set', '.AddOrFindSignal(', '.AddOrFindMPSignal(', '.StartEngine(', '.StopEngine(', '.Spawn', '.Teleport(', '.Delete', 'Check(', 'Transition(']:
   self.assertNotIn(forbidden,source)
  self.assertNotIn('modded class SCR_CharacterControllerComponent',source)
  self.assertIn('super.ApplyPilot(controller, owner, dt);',source)
  self.assertIn('super.PreparePilotActions(controller, owner, am, dt);',source)
  self.assertIn('super.Diagnostic(now);',source)

 def test_exact_actor_and_authority_before_observation(self):
  for signature in ['override void ApplyPilot(', 'void ERR_ObserveAppliedFlightInput(']:
   method=body(SOURCE,signature)
   self.assertIn('controller != m_Character || owner != m_Pilot',method)
   self.assertIn('!ERR_InputDiagActive()',method)
   self.assertLess(method.index('owner != m_Pilot'),method.index('m_Input.GetVehicleCollective()'))
  active=body(SOURCE,'protected bool ERR_InputDiagActive(')
  self.assertIn('System.GetCLIParam("errFlightInputDiag", enabled)',active)
  self.assertIn('!m_Bound || m_Stopped || !m_Input',active)
  self.assertIn('return PoweredAuthority();',active)

 def test_existing_signal_indexes_and_bounded_correlated_samples(self):
  lookup=body(SOURCE,'protected string ERR_ExistingRotorSignal(')
  self.assertIn('signals.FindSignal(name)',lookup)
  self.assertLess(lookup.index('if (index < 0) return "missing";'),lookup.index('signals.GetSignalValue(index)'))
  source=SOURCE.read_text()
  for name in ['MainRotorCollective','MainRotorCyclicForward','MainRotorCyclicAside','TailRotorCollective']:
   self.assertIn('ERR_ExistingRotorSignal(signals, "'+name+'")',source)
  self.assertIn('m_Controller.GetAutohoverEnabled()',source)
  self.assertIn('now >= m_NextLog',source)
  self.assertIn('m_ERRInputDiagSamples >= 120',source)
  self.assertEqual(source.count('PrintFormat('),3)
  self.assertIn('m_ERRAppliedSequence = m_ERRWrittenSequence;',source)
  self.assertIn('m_ControlUpdates == before',source)

 def test_optional_runner_flag_parses_then_refuses_missing_prefix(self):
  with tempfile.TemporaryDirectory() as directory:
   profile=Path(directory)
   result=subprocess.run([sys.executable,str(ROOT/'tools/headless_workbench.py'),
      '--smoke','powered-flight','--project','core','--rounds','1','--timeout','420',
      '--compat',str(profile/'missing-prefix'),'--profile',str(profile),
      '--flight-input-diagnostics'],text=True,capture_output=True)
   self.assertNotEqual(result.returncode,0)
   self.assertIn('must be a disposable cloned prefix',result.stderr)
   self.assertEqual(list(profile.iterdir()),[])
  runner=(ROOT/'tools/headless_workbench.py').read_text()
  self.assertIn("if a.flight_input_diagnostics: command += ['-errFlightInputDiag', '1']",runner)

if __name__=='__main__': unittest.main()