extends SceneTree


class FakePresenter:
	extends ConversationPresenter
	var presented_turn: ConversationTurn

	func present_turn(turn: ConversationTurn, _presentation_context: Dictionary = {}) -> Variant:
		presented_turn = turn.copy()
		return {
			"conversation_id": turn.get_conversation_id(),
			"revision": turn.get_revision(),
		}


const CATALOG_PATH := "res://simulation/dialogue/resources/jajce_conversation_intents.tres"

var failures: Array[String] = []


func _initialize() -> void:
	_test_catalog_and_deterministic_lifecycle()
	_test_revalidation_and_invalidation()
	_finish()


func _test_catalog_and_deterministic_lifecycle() -> void:
	var catalog := load(CATALOG_PATH) as ConversationIntentCatalog
	_check(
		catalog != null and catalog.rebuild().is_empty(), "The Jajce intent catalog should validate"
	)
	if catalog == null:
		return
	_check(
		catalog.get_intent_ids() == _sorted_ids(ConversationIntentIds.ALL),
		"The catalog should expose every required initial intent"
	)
	var speaker := WorldEntityRef.create(&"npc", &"amina")
	var listener := WorldEntityRef.create(&"npc", &"boris")
	var context := _context()
	var first_service := ConversationService.new(catalog)
	var second_service := ConversationService.new(catalog)
	var first_id := first_service.begin(speaker, listener, context)
	var second_id := second_service.begin(speaker, listener, context)
	_check(not first_id.is_empty(), "A valid semantic conversation should begin")
	_check(first_id == second_id, "Equivalent begin order and context should produce a stable ID")
	var first_turn := first_service.get_turn(first_id)
	var second_turn := second_service.get_turn(second_id)
	_check(first_turn != null and first_turn.is_valid(), "The first planned turn should validate")
	if first_turn == null or second_turn == null:
		return
	_check(
		(
			first_turn.get_revision() == 1
			and first_turn.get_act().get_intent_id() == ConversationIntentIds.GREET
		),
		"The initial turn should expose a revisioned semantic greeting"
	)
	_check(
		first_turn.get_act().get_causal_topic_ids() == [&"pantry_shortage"],
		"The act should retain causal topic IDs without authoritative prose"
	)
	_check(
		_turn_signature(first_turn) == _turn_signature(second_turn),
		"Equivalent semantic inputs should plan the same turn and option order"
	)
	var fake := FakePresenter.new()
	var rendered: Dictionary = fake.present_turn(first_turn)
	_check(
		rendered["revision"] == 1 and fake.presented_turn.get_act().get_intent_id() == &"greet",
		"A presenter should receive an already-planned immutable semantic turn"
	)
	context["topic_ids"].append(&"caller_mutation")
	_check(
		first_service.get_turn(first_id).get_causal_topic_ids() == [&"pantry_shortage"],
		"Conversation context should be isolated from caller mutation"
	)


func _test_revalidation_and_invalidation() -> void:
	var service := ConversationService.new()
	var speaker := WorldEntityRef.create(&"npc", &"amina")
	var listener := WorldEntityRef.create(&"npc", &"boris")
	_check(
		service.begin(speaker, listener, {"prose": "not semantic"}).is_empty(),
		"Unknown or prose-bearing authority keys should be rejected"
	)
	var conversation_id := service.begin(speaker, listener, _context())
	var turn := service.get_turn(conversation_id)
	if turn == null:
		_check(false, "A conversation should exist for revision tests")
		return
	var ask_work := _find_option_for_intent(turn, ConversationIntentIds.ASK_WORK)
	var offer_help := _find_option_for_intent(turn, ConversationIntentIds.OFFER_HELP)
	_check(ask_work != null and offer_help != null, "Configured semantic options should be present")
	if ask_work == null or offer_help == null:
		return
	_check(
		not offer_help.is_enabled() and offer_help.get_reason_code() == &"speaker_overcommitted",
		"Blocked choices should retain a semantic reason code and trace"
	)
	var disabled := service.select_option(
		conversation_id, offer_help.get_option_id(), turn.get_revision()
	)
	_check(
		(
			not disabled.was_accepted()
			and disabled.get_reason_code() == ConversationService.REASON_OPTION_DISABLED
			and service.get_turn(conversation_id).get_revision() == 1
		),
		"A disabled choice should be rejected without advancing revision"
	)
	var stale := service.select_option(conversation_id, ask_work.get_option_id(), 0)
	_check(
		(
			not stale.was_accepted()
			and stale.get_reason_code() == ConversationService.REASON_STALE_REVISION
			and stale.get_current_revision() == 1
			and stale.get_turn().get_revision() == 1
		),
		"A stale selection should return the current revision for revalidation"
	)
	var selected := service.select_option(
		conversation_id, ask_work.get_option_id(), turn.get_revision()
	)
	_check(
		(
			selected.was_accepted()
			and selected.get_current_revision() == 2
			and selected.get_turn().get_act().get_intent_id() == ConversationIntentIds.ASK_WORK
		),
		"A current enabled option should advance exactly one semantic revision"
	)
	_check(
		(
			selected.get_turn().get_speaker().equals(listener)
			and selected.get_turn().get_listener().equals(speaker)
		),
		"Selecting a listener option should swap the next turn's speaking direction"
	)
	_check(
		not service.select_option(conversation_id, ask_work.get_option_id(), 1).was_accepted(),
		"A replayed option should fail stale-revision validation"
	)
	var invalidations: Array[StringName] = []
	service.conversation_invalidated.connect(
		func(id: StringName, _reason: StringName) -> void: invalidations.append(id)
	)
	_check(
		service.invalidate_for_entity(listener, &"listener_unloaded") == [conversation_id],
		"Entity invalidation should deterministically close its active conversations"
	)
	_check(
		(
			invalidations == [conversation_id]
			and service.get_turn(conversation_id) == null
			and not service.has_active_conversation(conversation_id)
		),
		"Invalidation should emit a hook and make the turn inaccessible"
	)


func _context() -> Dictionary:
	return {
		"conversation_key": &"pantry_encounter",
		"initial_intent_id": ConversationIntentIds.GREET,
		"topic_ids": [&"pantry_shortage"],
		"option_intent_ids":
		{
			ConversationIntentIds.GREET:
			[ConversationIntentIds.ASK_WORK, ConversationIntentIds.OFFER_HELP]
		},
		"topics_by_intent":
		{
			ConversationIntentIds.OFFER_HELP: [&"pantry_shortage"],
			ConversationIntentIds.ASK_WORK: [&"pantry_shortage"],
		},
		"blocked_intent_ids": [ConversationIntentIds.OFFER_HELP],
		"block_reason_by_intent": {ConversationIntentIds.OFFER_HELP: &"speaker_overcommitted"},
		"reason_trace": [&"participants_nearby", &"shared_topic_available"],
	}


func _find_option_for_intent(turn: ConversationTurn, intent_id: StringName) -> ConversationOption:
	for option in turn.get_options():
		if option.get_intent_id() == intent_id:
			return option
	return null


func _turn_signature(turn: ConversationTurn) -> Array:
	var signature: Array = [
		turn.get_revision(), turn.get_act().get_intent_id(), turn.get_act().get_causal_topic_ids()
	]
	for option in turn.get_options():
		(
			signature
			. append(
				[
					option.get_option_id(),
					option.get_intent_id(),
					option.is_enabled(),
					option.get_reason_code(),
					option.get_causal_topic_ids(),
				]
			)
		)
	return signature


func _sorted_ids(ids: Array[StringName]) -> Array[StringName]:
	var sorted := ids.duplicate()
	sorted.sort_custom(
		func(left: StringName, right: StringName) -> bool: return String(left) < String(right)
	)
	return sorted


func _check(condition: bool, message: String) -> void:
	if not condition:
		failures.append(message)


func _finish() -> void:
	if failures.is_empty():
		print("[TEST] Semantic conversation domain passed")
		quit(0)
		return
	for failure in failures:
		push_error("[TEST] " + failure)
	quit(1)