class_name StickmanActionRunner
extends Node
## Owns authored and reactive action execution plus the shared speech bubble.
## StickmanRig remains the public facade; this node only calls down into
## locomotion and signals requests back to the facade.

const ACTION_REGISTRY := preload("res://scripts/action_registry.gd")
const SPEECH_BUBBLE_SCRIPT := preload("res://scripts/stickman_speech_bubble.gd")
const SPEECH_BUBBLE_OFFSET := Vector2(0.0, -640.0)

enum RunnerState { IDLE, EXECUTING }
enum ActionPhase { NONE, WALKING, SPEAKING, WAITING, RAGDOLLING, RECOVERING }

signal action_started(action: Dictionary, index: int)
signal action_finished(action: Dictionary, index: int)
signal queue_finished
signal queue_changed
signal speech_finished
signal ragdoll_requested(enabled: bool)
signal recovery_requested

var action_queue: Array[Dictionary] = []
var _rig: StickmanRig = null
var _locomotion: StickmanLocomotion = null
var _runner_state: RunnerState = RunnerState.IDLE
var _action_phase: ActionPhase = ActionPhase.NONE
var _current_index: int = -1
var _run_queue: Array[Dictionary] = []
var _current_run_item: Dictionary = {}
var _run_cursor: int = 0
var _phase_timer: float = 0.0
var _primary_speech: Dictionary = {}
var _overlay_speech: Dictionary = {}
var _speech_bubble: Node2D = null


func configure(rig: StickmanRig, locomotion: StickmanLocomotion) -> void:
	_rig = rig
	_locomotion = locomotion


func tick(delta: float, rig_state: int, ragdoll_at_rest: bool) -> void:
	_update_speech(delta)
	if _runner_state != RunnerState.EXECUTING or _is_blocked():
		return
	match _action_phase:
		ActionPhase.NONE:
			_advance_to_next_action()
		ActionPhase.WALKING:
			if _locomotion != null and _locomotion.consume_walk_completed():
				_finish_action()
		ActionPhase.SPEAKING:
			if _primary_speech.is_empty():
				_finish_action()
		ActionPhase.WAITING:
			_phase_timer -= delta
			if _phase_timer <= 0.0:
				_finish_action()
		ActionPhase.RAGDOLLING:
			if ragdoll_at_rest:
				_finish_action()
		ActionPhase.RECOVERING:
			if rig_state == StickmanRig.RigState.ANIMATED:
				_finish_action()


func speak(text: String, duration: float) -> void:
	_primary_speech = {"text": text, "time_left": maxf(duration, 0.0)}
	_show_visible_speech()


func speak_overlay(text: String, duration: float) -> void:
	_overlay_speech = {"text": text, "time_left": maxf(duration, 0.0)}
	_show_visible_speech()


func hide_speech() -> void:
	_primary_speech.clear()
	_overlay_speech.clear()
	if _speech_bubble != null and is_instance_valid(_speech_bubble):
		_speech_bubble.hide_bubble()


func sync_facing(profile: int) -> void:
	if _speech_bubble != null and is_instance_valid(_speech_bubble):
		_speech_bubble.scale = Vector2(-1.0, 1.0) if profile == StickmanRig.FacingProfile.LEFT else Vector2.ONE


func queue_action(action: Dictionary) -> void:
	action_queue.append(action)
	queue_changed.emit()


func clear_queue() -> void:
	action_queue.clear()
	queue_changed.emit()


func get_queue() -> Array[Dictionary]:
	return action_queue.duplicate(true)


func remove_action(index: int) -> void:
	if index < 0 or index >= action_queue.size():
		push_warning("StickmanActionRunner: remove_action index %d out of range." % index)
		return
	action_queue.remove_at(index)
	queue_changed.emit()


func insert_action(index: int, action: Dictionary) -> void:
	action_queue.insert(clampi(index, 0, action_queue.size()), action)
	queue_changed.emit()


func queue_size() -> int:
	return action_queue.size()


func enqueue_reactive(actions: Array[Dictionary]) -> void:
	if actions.is_empty():
		return
	if _run_queue.is_empty() and _runner_state == RunnerState.IDLE:
		for index: int in action_queue.size():
			_run_queue.append({"action": action_queue[index].duplicate(true), "queue_index": index, "reactive": false})
		_run_cursor = 0
	var primary: Array[Dictionary] = []
	var takeover_seen: bool = false
	for action: Dictionary in actions:
		var role: int = ACTION_REGISTRY.reactive_role(action)
		if role == ACTION_REGISTRY.ReactiveRole.OVERLAY:
			speak_overlay(String(action.get("text", "")), float(action.get("duration", 2.0)))
			continue
		if role == ACTION_REGISTRY.ReactiveRole.TAKEOVER:
			if not takeover_seen:
				takeover_seen = true
				_cancel_current_primary()
				_overlay_speech.clear()
				hide_speech()
				var kept: Array[Dictionary] = []
				for item: Dictionary in _run_queue.slice(_run_cursor):
					if not bool(item.get("reactive", false)):
						kept.append(item)
				_run_queue = kept
				_run_cursor = 0
				primary.clear()
		primary.append(action.duplicate(true))
	if primary.is_empty():
		return
	if not takeover_seen:
		_cancel_current_primary()
	var injected: Array[Dictionary] = []
	for action: Dictionary in primary:
		injected.append({"action": action, "queue_index": -1, "reactive": true})
	_run_queue = injected + _run_queue.slice(_run_cursor)
	_run_cursor = 0
	_runner_state = RunnerState.EXECUTING
	_action_phase = ActionPhase.NONE


func clear_reactive_actions() -> void:
	var runtime_kept: Array[Dictionary] = []
	for item: Dictionary in _run_queue:
		if not bool(item.get("reactive", false)):
			runtime_kept.append(item)
	_run_queue = runtime_kept
	_run_cursor = mini(_run_cursor, _run_queue.size())
	var kept: Array[Dictionary] = []
	for action: Dictionary in action_queue:
		if not bool(action.get("reactive", false)):
			kept.append(action)
	if kept.size() != action_queue.size():
		action_queue = kept
		queue_changed.emit()


func start_queue() -> void:
	if _runner_state == RunnerState.EXECUTING:
		return
	if action_queue.is_empty():
		queue_finished.emit()
		return
	_runner_state = RunnerState.EXECUTING
	_action_phase = ActionPhase.NONE
	_current_index = -1
	_run_queue.clear()
	for index: int in action_queue.size():
		_run_queue.append({"action": action_queue[index].duplicate(true), "queue_index": index, "reactive": false})
	_run_cursor = 0
	_current_run_item.clear()


func stop_queue() -> void:
	_cancel_current_primary()
	hide_speech()
	_run_queue.clear()
	_current_run_item.clear()
	_runner_state = RunnerState.IDLE
	_action_phase = ActionPhase.NONE
	_current_index = -1


func is_queue_running() -> bool:
	return _runner_state == RunnerState.EXECUTING


func get_current_index() -> int:
	return _current_index


func _advance_to_next_action() -> void:
	if _run_cursor >= _run_queue.size():
		_runner_state = RunnerState.IDLE
		_action_phase = ActionPhase.NONE
		_current_index = -1
		queue_finished.emit()
		return
	_current_run_item = _run_queue[_run_cursor]
	_run_cursor += 1
	var action: Dictionary = _current_run_item.get("action", {})
	_current_index = int(_current_run_item.get("queue_index", -1))
	action_started.emit(action, _current_index)
	_begin_action(action)


func _begin_action(action: Dictionary) -> void:
	match String(action.get("type", "")):
		"walk_to":
			_action_phase = ActionPhase.WALKING
			if _locomotion == null or not _locomotion.walk_to(action.get("target", Vector2.ZERO), float(action.get("speed", -1.0))):
				_finish_action()
		"speak":
			_action_phase = ActionPhase.SPEAKING
			speak(String(action.get("text", "")), float(action.get("duration", 2.0)))
		"wait":
			_phase_timer = float(action.get("duration", 0.0))
			_action_phase = ActionPhase.WAITING
		"ragdoll":
			_action_phase = ActionPhase.RAGDOLLING
			ragdoll_requested.emit(true)
		"recover":
			_action_phase = ActionPhase.RECOVERING
			recovery_requested.emit()
		_:
			push_warning("StickmanActionRunner: unknown action type '%s'; skipped." % String(action.get("type", "")))
			_finish_action()


func _finish_action() -> void:
	var finished: Dictionary = _current_run_item.get("action", {})
	var index: int = int(_current_run_item.get("queue_index", -1))
	_action_phase = ActionPhase.NONE
	_current_run_item.clear()
	_current_index = -1
	if not finished.is_empty():
		action_finished.emit(finished, index)


func _cancel_current_primary() -> void:
	if _locomotion != null:
		_locomotion.cancel_walk(not _is_blocked())
	_primary_speech.clear()
	_phase_timer = 0.0
	_action_phase = ActionPhase.NONE
	_current_run_item.clear()
	_current_index = -1
	if _overlay_speech.is_empty() and _speech_bubble != null and is_instance_valid(_speech_bubble):
		_speech_bubble.hide_bubble()


func _is_blocked() -> bool:
	return _locomotion != null and _locomotion.is_action_blocked()


func _update_speech(delta: float) -> void:
	var visible_owner_changed: bool = false
	if not _primary_speech.is_empty() and not _is_blocked():
		_primary_speech["time_left"] = float(_primary_speech.get("time_left", 0.0)) - delta
		if float(_primary_speech["time_left"]) <= 0.0:
			_primary_speech.clear()
			speech_finished.emit()
	if not _overlay_speech.is_empty():
		_overlay_speech["time_left"] = float(_overlay_speech.get("time_left", 0.0)) - delta
		if float(_overlay_speech["time_left"]) <= 0.0:
			_overlay_speech.clear()
			visible_owner_changed = true
			speech_finished.emit()
	if _overlay_speech.is_empty() and _primary_speech.is_empty():
		if _speech_bubble != null and is_instance_valid(_speech_bubble):
			_speech_bubble.hide_bubble()
	elif visible_owner_changed and _overlay_speech.is_empty():
		_show_visible_speech()


func _show_visible_speech() -> void:
	if _rig == null:
		return
	if _speech_bubble == null or not is_instance_valid(_speech_bubble):
		_speech_bubble = SPEECH_BUBBLE_SCRIPT.new() as Node2D
		_speech_bubble.name = "SpeechBubble"
		_speech_bubble.position = SPEECH_BUBBLE_OFFSET
		_rig.add_child(_speech_bubble)
		sync_facing(_rig.facing_profile)
	var visible_speech: Dictionary = _overlay_speech if not _overlay_speech.is_empty() else _primary_speech
	if not visible_speech.is_empty():
		_speech_bubble.show_text(String(visible_speech.get("text", "")))