extends SceneTree

const FOURTEEN_DAYS_MINUTES := 14 * SimulationKernel.MINUTES_PER_DAY
const RUNTIME_SNAPSHOT_VERSION := 8

var _checks := 0
var _failures := 0


func _initialize() -> void:
	call_deferred("_run")


func _run() -> void:
	print("MVP: production Operations acceptance")
	_test_waiting_choice_and_command_exactly_once()
	_test_twenty_four_hour_actual_tick_smoke()
	_test_full_partial_payroll_bankruptcy_and_v8_tamper()
	_test_fourteen_day_boundary_snapshot_determinism()
	await process_frame
	if _failures == 0:
		print("PASS: %d checks" % _checks)
	else:
		push_error("FAIL: %d of %d checks failed" % [_failures, _checks])
	quit(_failures)


func _new_fixture(seed: int, enable_operations := true) -> Dictionary:
	var clock: Variant = load("res://autoload/game_clock.gd").new()
	var state: Variant = load("res://autoload/game_state.gd").new()
	var runtime: Variant = load("res://autoload/simulation_runtime.gd").new()
	clock.reset(1, 6, 0)
	state.reset()
	var initialized: Dictionary = runtime.initialize(clock, state, seed)
	clock.set_paused(true)
	_expect(bool(initialized.get(&"valid", false)), "fixture Runtime initializes")
	var initial_snapshot: Dictionary = runtime.create_snapshot()
	_expect(
		int(initial_snapshot[&"systems"][&"runtime"].get(
			&"runtime_schema_version", -1
		)) == RUNTIME_SNAPSHOT_VERSION,
		"fixture emits Runtime snapshot schema v8"
	)
	if enable_operations:
		var enabled: Dictionary = runtime.enable_production_operations()
		_expect(bool(enabled.get(&"ok", false)), "fixture enables production Operations")
	return {&"clock": clock, &"state": state, &"runtime": runtime}


func _free_fixture(fixture: Dictionary) -> void:
	var runtime: Variant = fixture.get(&"runtime")
	var clock: Variant = fixture.get(&"clock")
	var state: Variant = fixture.get(&"state")
	if runtime != null:
		runtime.free()
	if clock != null:
		clock.free()
	if state != null:
		state.free()


# Long acceptance slices deliberately exercise the production Operations
# adapter without claiming to execute unrelated actor AI on all 20,160 minutes.
# Aggregate clocks are aligned solely to preserve the Runtime transaction
# precondition; the separate 24-hour smoke above covers the actual Tick pipeline.
# One final rich snapshot (and the midpoint restore) is the Operations oracle.
func _advance_operations_boundary_slice(fixture: Dictionary, amount: int) -> int:
	var clock: Variant = fixture[&"clock"]
	var runtime: Variant = fixture[&"runtime"]
	var advanced := 0
	while advanced < amount:
		if runtime.operations_coordinator != null \
				and runtime.operations_coordinator.is_terminal():
			break
		# Operations has no recurring boundary finer than 30 minutes. The
		# coordinator still performs its own unthinned internal minute traversal;
		# unrelated Runtime AI is intentionally outside this accelerated oracle.
		var step := mini(30, amount - advanced)
		var target: int = clock.absolute_minute + step
		clock.absolute_minute = target
		clock.call("_sync_calendar_fields")
		clock.snapshot_version += step
		runtime.call("_advance_operations_time", target)
		if bool(runtime.get_operations_report().get(&"runtime_failure_latched", false)):
			break
		if runtime.operations_coordinator.is_terminal():
			# A terminal daily close commits TIME_BOUNDARIES and deliberately skips
			# the Runtime suffix; its other aggregates therefore remain at X - 1.
			_align_operations_fixture_clocks(runtime, target - 1)
			advanced += step
			break
		# These acceptance fixtures contain no Facilities, logistics, raids, or
		# Staff tasks. Their clocks are aligned for Operations cross-link checks;
		# their skipped actor/Shift behavior is explicitly outside this fast oracle.
		_align_operations_fixture_clocks(runtime, target)
		advanced += step
	return advanced


func _align_operations_fixture_clocks(runtime: Variant, minute: int) -> void:
	runtime.inventory_service.current_minute = minute
	runtime.facility_service.current_minute = minute
	runtime.kitchen_production.current_minute = minute
	runtime.guest_service.current_minute = minute
	runtime.staff_service.current_minute = minute
	runtime.authority_service.current_minute = minute
	runtime.defense_service.current_minute = minute
	runtime.construction_service.current_minute = minute
	runtime.excavation_service.current_minute = minute
	# This accelerated oracle owns no cars or rides; update its empty transport
	# aggregate through the public snapshot validator instead of a private clock.
	var transport_snapshot: Dictionary = runtime.elevators.create_snapshot()
	if not (transport_snapshot[&"shafts"] as Array).is_empty() or not (transport_snapshot[&"trips"] as Array).is_empty():
		_expect(false, "accelerated Operations oracle cannot skip live elevator movement")
		return
	transport_snapshot[&"current_minute"] = minute
	if not runtime.elevators.restore_snapshot(transport_snapshot):
		_expect(false, "empty transport clock aligns through validated snapshot restore")


func _operations_slice_is_healthy(fixture: Dictionary) -> bool:
	var runtime: Variant = fixture[&"runtime"]
	var report: Dictionary = runtime.get_operations_report()
	var foreground: EventInstance = runtime.event_service.get_foreground_instance()
	return not bool(report.get(&"runtime_failure_latched", true)) \
		and int(report.get(&"deferred_runtime_minute", -2)) == -1 \
		and not runtime.operations_coordinator.pause_requested \
		and not runtime.operations_coordinator.is_terminal() \
		and not runtime.operations_coordinator.is_external_quarantined() \
		and (foreground == null or foreground.state != EventInstance.State.WAITING_CHOICE)


func _test_waiting_choice_and_command_exactly_once() -> void:
	var fixture := _new_fixture(73_001)
	var runtime: Variant = fixture[&"runtime"]
	var clock: Variant = fixture[&"clock"]
	var state: Variant = fixture[&"state"]

	var queued: CommandResult = runtime.event_service.enqueue_candidate(
		&"relationship.threshold",
		[],
		clock.absolute_minute,
		{&"deduplication_key": &"operations-acceptance-choice"}
	)
	var started: CommandResult = runtime.event_service.start_next_event(
		clock.absolute_minute, {}
	)
	_expect(
		queued.is_success() and started.is_success()
			and bool(started.details.get(&"waiting_for_choice", false)),
		"foreground Event enters WAITING_CHOICE"
	)
	clock.set_paused(false)
	var before_choice_minute: int = clock.absolute_minute
	clock.advance_minutes(5)
	var foreground: EventInstance = runtime.event_service.get_foreground_instance()
	_expect(
		clock.paused and clock.absolute_minute == before_choice_minute + 1,
		"WAITING_CHOICE pauses at the first committed minute and stops catch-up"
	)
	_expect(
		foreground != null and foreground.state == EventInstance.State.WAITING_CHOICE,
		"paused foreground ownership remains intact"
	)
	if foreground != null:
		var choice_result: CommandResult = runtime.submit_command(
			&"submit_event_choice",
			{
				&"event_instance_id": foreground.event_instance_id,
				&"choice_instance_id": foreground.choice_instance_id,
				&"choice_id": &"acknowledge",
			},
			&"player",
			foreground.event_instance_id,
			100,
			-1,
			&"operations.acceptance.choice"
		)
		_expect(
			choice_result.is_success()
				and runtime.event_service.get_foreground_instance() == null
				and not clock.paused,
			"submitting the stable Choice token resolves the Event and resumes time"
		)

	clock.set_paused(true)
	var gold_before: int = state.get_resource(&"gold")
	var first: CommandResult = runtime.submit_command(
		&"change_resources",
		{&"deltas": {&"gold": 17}},
		&"player",
		&"",
		50,
		-1,
		&"operations.acceptance.exactly-once"
	)
	var gold_after_first: int = state.get_resource(&"gold")
	var retry: CommandResult = runtime.submit_command(
		&"change_resources",
		{&"deltas": {&"gold": 17}},
		&"player",
		&"",
		50,
		-1,
		&"operations.acceptance.exactly-once"
	)
	_expect(
		first.is_success() and gold_after_first == gold_before + 17,
		"first public command commits its resource delta once"
	)
	_expect(
		not retry.is_success()
			and retry.code == CommandResult.Code.DUPLICATE_IDEMPOTENCY_KEY
			and state.get_resource(&"gold") == gold_after_first,
		"transport retry with the same idempotency key cannot apply twice"
	)
	var command_snapshot: Dictionary = runtime.create_snapshot()
	_expect(
		runtime.restore_snapshot(command_snapshot),
		"command history survives an exact v8 snapshot round trip"
	)
	var restored_retry: CommandResult = runtime.submit_command(
		&"change_resources",
		{&"deltas": {&"gold": 17}},
		&"player",
		&"",
		50,
		-1,
		&"operations.acceptance.exactly-once"
	)
	_expect(
		not restored_retry.is_success()
			and restored_retry.code == CommandResult.Code.DUPLICATE_IDEMPOTENCY_KEY
			and state.get_resource(&"gold") == gold_after_first,
		"restored idempotency history still rejects the same command"
	)
	_free_fixture(fixture)


func _test_twenty_four_hour_actual_tick_smoke() -> void:
	var fixture := _new_fixture(73_004)
	var runtime: Variant = fixture[&"runtime"]
	var clock: Variant = fixture[&"clock"]
	var start_minute: int = clock.absolute_minute
	clock.advance_minutes(SimulationKernel.MINUTES_PER_DAY)
	_expect(
		clock.absolute_minute - start_minute == SimulationKernel.MINUTES_PER_DAY,
		"actual SimulationKernel ticks complete an uninterrupted 24-hour smoke slice"
	)
	_expect(
		_operations_slice_is_healthy(fixture)
			and runtime.operations_coordinator.current_minute == clock.absolute_minute
			and runtime.operations_coordinator.get_day_summaries().size() == 1,
		"24-hour actual-tick slice has no Choice, deferred minute, quarantine, or terminal stop"
	)
	var snapshot: Dictionary = runtime.create_snapshot()
	_expect(
		runtime.restore_snapshot(snapshot)
			and runtime.latest_digest == SimulationDigest.compute(snapshot),
		"24-hour actual-tick v8 snapshot round trip is exact"
	)
	_free_fixture(fixture)


func _test_full_partial_payroll_bankruptcy_and_v8_tamper() -> void:
	var fixture := _new_fixture(73_002, false)
	var runtime: Variant = fixture[&"runtime"]
	var clock: Variant = fixture[&"clock"]
	var state: Variant = fixture[&"state"]
	var candidate: Dictionary = runtime.get_mvp_staff_candidate_payload(&"staff_akane")
	var daily_wage := int(candidate[&"options"][&"daily_wage"])
	var hired: CommandResult = runtime.submit_command(
		&"hire_staff_candidate",
		{&"candidate_id": &"staff_akane", &"current_cell": Vector3i.ZERO},
		&"player",
		&"staff_akane",
		80,
		-1,
		&"operations.acceptance.hire"
	)
	_expect(hired.is_success() and daily_wage > 50, "payroll fixture hires one wage-bearing Staff member")
	var enabled: Dictionary = runtime.enable_production_operations()
	_expect(bool(enabled.get(&"ok", false)), "payroll fixture enables Operations after the pre-opening hire")

	var full_advanced := _advance_operations_boundary_slice(
		fixture, SimulationKernel.MINUTES_PER_DAY
	)
	var full: Dictionary = runtime.staff_service.get_payroll_settlement(&"payroll-day-00000001")
	_expect(
		full_advanced == SimulationKernel.MINUTES_PER_DAY
			and _operations_slice_is_healthy(fixture)
			and clock.absolute_minute == SimulationKernel.MINUTES_PER_DAY + 6 * 60
			and int(full.get(&"new_wages_total", -1)) == daily_wage
			and int(full.get(&"paid_total", -1)) == daily_wage
			and int(full.get(&"unpaid_after_total", -1)) == 0,
		"Day 1 payroll is paid in full and closes at exactly 06:00"
	)

	var cash_now: int = runtime.economy_service.get_balance(runtime.PLAYER_CASH_ACCOUNT)
	var drained: CommandResult = runtime.submit_command(
		&"change_resources",
		{&"deltas": {&"gold": -(cash_now - 50)}},
		&"player",
		&"",
		90,
		-1,
		&"operations.acceptance.cash-drain"
	)
	_expect(
		drained.is_success()
			and runtime.economy_service.get_balance(runtime.PLAYER_CASH_ACCOUNT) == 50,
		"fixture leaves exactly 50 Gold for a deterministic partial payroll"
	)
	var partial_advanced := _advance_operations_boundary_slice(
		fixture, SimulationKernel.MINUTES_PER_DAY
	)
	var partial: Dictionary = runtime.staff_service.get_payroll_settlement(&"payroll-day-00000002")
	_expect(
		partial_advanced == SimulationKernel.MINUTES_PER_DAY
			and _operations_slice_is_healthy(fixture)
			and clock.absolute_minute == 2 * SimulationKernel.MINUTES_PER_DAY + 6 * 60
			and int(partial.get(&"new_wages_total", -1)) == daily_wage
			and int(partial.get(&"paid_total", -1)) == 50
			and int(partial.get(&"unpaid_after_total", -1)) == daily_wage - 50,
		"Day 2 payroll pays available Gold only and carries exact arrears"
	)

	var terminal_advanced := _advance_operations_boundary_slice(
		fixture, 2 * SimulationKernel.MINUTES_PER_DAY
	)
	var coordinator: OperationsCoordinator = runtime.operations_coordinator
	var last_three_negative := true
	for day in [2, 3, 4]:
		var summary: Dictionary = coordinator.get_day_summary(day)
		last_three_negative = last_three_negative \
			and int(summary.get(&"net_profit", 0)) < 0 \
			and int((summary.get(&"settlement", {}) as Dictionary).get(
				&"arrears_total", 0
			)) > 0
	_expect(
		terminal_advanced == 2 * SimulationKernel.MINUTES_PER_DAY
			and clock.absolute_minute == 4 * SimulationKernel.MINUTES_PER_DAY + 6 * 60
			and last_three_negative
			and coordinator.get_consecutive_insolvency_count() == 3
			and coordinator.get_terminal_state() == &"BANKRUPT",
		"three consecutive negative closes with arrears enter BANKRUPT at the third boundary"
	)
	var terminal_snapshot: Dictionary = runtime.create_snapshot()
	var terminal_digest := SimulationDigest.compute(terminal_snapshot)
	_expect(
		runtime.restore_snapshot(terminal_snapshot),
		"BANKRUPT terminal v8 snapshot restores without clearing terminal state"
	)
	clock.advance_minutes(180)
	_expect(
		clock.absolute_minute == 4 * SimulationKernel.MINUTES_PER_DAY + 6 * 60
			and SimulationDigest.compute(runtime.create_snapshot()) == terminal_digest,
		"BANKRUPT is terminal: later time requests are exact no-ops"
	)
	_expect(
		not bool(runtime.acknowledge_operations_pause().get(&"ok", true)),
		"BANKRUPT cannot be acknowledged away"
	)

	_assert_v8_tamper_rejected(
		runtime,
		terminal_snapshot,
		func(tampered: Dictionary) -> void:
			tampered[&"systems"][&"runtime"][&"operations"][&"personal_action_points"] = 99,
		"v8 rejects an out-of-range Operations action-point total"
	)
	_assert_v8_tamper_rejected(
		runtime,
		terminal_snapshot,
		func(tampered: Dictionary) -> void:
			tampered[&"systems"][&"runtime"][&"next_command_id"] = int(
				tampered[&"systems"][&"runtime"][&"next_command_id"]
			) + 1,
		"v8 rejects command high-water gaps"
	)
	_assert_v8_tamper_rejected(
		runtime,
		terminal_snapshot,
		func(tampered: Dictionary) -> void:
			var accepted: Array = tampered[&"systems"][&"runtime"][&"command_queue"][&"accepted"]
			if not accepted.is_empty():
				accepted[0][&"idempotency_key"] = &"tampered.accepted.key",
		"v8 rejects accepted-command/idempotency cross-link tampering"
	)
	_assert_v8_tamper_rejected(
		runtime,
		terminal_snapshot,
		func(tampered: Dictionary) -> void:
			var summaries: Array = tampered[&"systems"][&"runtime"][&"operations"][&"coordinator"][&"day_summaries"]
			summaries[0][&"category_totals"][&"wages"] = int(
				summaries[0][&"category_totals"][&"wages"]
			) + 1,
		"v8 rejects DaySummary/payroll wage reconciliation tampering"
	)
	_assert_v8_tamper_rejected(
		runtime,
		terminal_snapshot,
		func(tampered: Dictionary) -> void:
			tampered[&"systems"][&"runtime"][&"unexpected_v8_field"] = true,
		"v8 rejects unknown Runtime fields"
	)
	_assert_v8_tamper_rejected(
		runtime,
		terminal_snapshot,
		func(tampered: Dictionary) -> void:
			tampered[&"systems"][&"runtime"][&"operations"][&"coordinator"][&"unexpected_field"] = true,
		"v8 rejects unknown Coordinator fields"
	)
	_free_fixture(fixture)


func _assert_v8_tamper_rejected(
	runtime: Variant,
	canonical: Dictionary,
	mutator: Callable,
	label: String
) -> void:
	var before: Dictionary = runtime.create_snapshot()
	var tampered: Dictionary = canonical.duplicate(true)
	mutator.call(tampered)
	var rejected: bool = not runtime.restore_snapshot(tampered)
	_expect(rejected and runtime.create_snapshot() == before, label + " atomically")


func _test_fourteen_day_boundary_snapshot_determinism() -> void:
	var seed := 73_003
	var continuous := _new_fixture(seed)
	var continuous_clock: Variant = continuous[&"clock"]
	var continuous_runtime: Variant = continuous[&"runtime"]
	var continuous_start: int = continuous_clock.absolute_minute
	var first_advanced := _advance_operations_boundary_slice(
		continuous, FOURTEEN_DAYS_MINUTES / 2
	)
	var midpoint: Dictionary = continuous_runtime.create_snapshot()
	_expect(
		first_advanced == FOURTEEN_DAYS_MINUTES / 2
			and continuous_clock.absolute_minute == continuous_start + FOURTEEN_DAYS_MINUTES / 2
			and _operations_slice_is_healthy(continuous),
		"boundary-accelerated midpoint is captured after seven healthy days"
	)
	var second_advanced := _advance_operations_boundary_slice(
		continuous, FOURTEEN_DAYS_MINUTES / 2
	)
	var continuous_snapshot: Dictionary = continuous_runtime.create_snapshot()
	var continuous_digest := SimulationDigest.compute(continuous_snapshot)
	_expect(
		first_advanced + second_advanced == FOURTEEN_DAYS_MINUTES
			and continuous_clock.absolute_minute - continuous_start == FOURTEEN_DAYS_MINUTES
			and _operations_slice_is_healthy(continuous),
		"continuous boundary-accelerated Operations advances exactly 14 days = 20,160 minutes"
	)
	_expect(
		continuous_runtime.operations_coordinator.get_day_summaries().size() == 14,
		"continuous boundary run commits all fourteen daily closes"
	)

	var resumed := _new_fixture(seed, false)
	var resumed_clock: Variant = resumed[&"clock"]
	var resumed_runtime: Variant = resumed[&"runtime"]
	var restored: bool = resumed_runtime.restore_snapshot(midpoint)
	_expect(restored, "fresh Runtime restores the enabled v8 midpoint snapshot")
	var resumed_advanced := 0
	if restored:
		resumed_advanced = _advance_operations_boundary_slice(
			resumed, FOURTEEN_DAYS_MINUTES / 2
		)
	var resumed_snapshot: Dictionary = resumed_runtime.create_snapshot()
	_expect(
		restored and resumed_advanced == FOURTEEN_DAYS_MINUTES / 2
			and resumed_clock.absolute_minute == 6 * 60 + FOURTEEN_DAYS_MINUTES
			and _operations_slice_is_healthy(resumed),
		"restored boundary-accelerated Operations completes seven healthy days"
	)
	_expect(
		restored and SimulationDigest.compute(resumed_snapshot) == continuous_digest
			and resumed_snapshot == continuous_snapshot,
		"continuous and midpoint-restored 14-day boundary runs have identical snapshot and Digest"
	)
	_free_fixture(continuous)
	_free_fixture(resumed)


func _expect(condition: bool, label: String) -> void:
	_checks += 1
	if condition:
		print("  ✓ %s" % label)
		return
	_failures += 1
	push_error("  ✗ %s" % label)