extends Control

var controller: TrainingController

@onready var hand_area := $HandArea as HandArea
@onready var play_button: Button = $Buttons/PlayButton
@onready var pass_button: Button = $Buttons/PassButton
@onready var hint_button: Button = $Buttons/HintButton
@onready var status_label: Label = $StatusLabel
@onready var guide_label: Label = $GuideLabel

func _ready() -> void:
	play_button.pressed.connect(_on_play_pressed)
	pass_button.pressed.connect(_on_pass_pressed)
	hint_button.pressed.connect(_on_hint_pressed)
	start_training()

func start_training() -> void:
	controller = TrainingController.new()
	add_child(controller)
	hand_area.training_controller = controller
	controller.start_game(Config.rule_config, 0)
	controller.turn_ready.connect(_on_turn_ready)
	controller.state_changed.connect(_refresh_ui)
	controller.game_ended.connect(_on_game_ended)
	_update_guide_text()
	_refresh_ui()

func _update_guide_text() -> void:
	if guide_label:
		guide_label.text = "💡 提示：点击手牌选中，然后点击「出牌」或「过牌」。首次出牌建议点击「提示」按钮。"

func _on_turn_ready(player_idx: int, is_human: bool) -> void:
	if is_human:
		hand_area.enable_input()
		if status_label:
			status_label.text = "你的回合 - 请出牌或点击过牌"
	else:
		hand_area.disable_input()
		if status_label and controller and controller.game_state:
			status_label.text = "%s 思考中..." % controller.game_state.player_names[player_idx]

func _on_play_pressed() -> void:
	if not hand_area:
		return
	var selected := hand_area.selected_cards
	if selected.is_empty():
		if status_label:
			status_label.text = "请先选择要出的牌"
		return
	var result := controller.handle_human_play(selected)
	if not result.ok:
		var error_msg := _get_error_message(result.error_code)
		if status_label:
			status_label.text = "❌ %s" % error_msg
		return
	hand_area.clear_selection()
	if status_label:
		status_label.text = "✓ 出牌成功！"
	_refresh_ui()

func _get_error_message(error_code: int) -> String:
	match error_code:
		1: return "无效的牌型组合"
		2: return "不是你的回合"
		3: return "不能过牌（你是领出者）"
		4: return "牌不在手中"
		_: return "出牌失败"

func _on_pass_pressed() -> void:
	var result := controller.handle_human_pass()
	if not result.ok:
		var error_msg := _get_error_message(result.error_code)
		if status_label:
			status_label.text = "❌ %s" % error_msg
		return
	if status_label:
		status_label.text = "✓ 已过牌"
	_refresh_ui()

func _on_hint_pressed() -> void:
	var hint := controller.get_hint()
	if hint == null or hint.type == -1:
		if status_label:
			status_label.text = "建议：过牌（当前轮到你领出，但无合适牌型）"
		return
	if not hand_area:
		return
	hand_area.clear_selection()
	for card in hint.cards:
		for cn in hand_area.card_nodes:
			if cn.card_data != null and cn.card_data.card_id == card.card_id:
				cn.set_selected(true)
				hand_area.selected_cards.append(card)
	var type_name := _get_type_name(hint.type)
	if status_label:
		status_label.text = "💡 建议：出 %s（%d张，主阶=%d）" % [type_name, hint.cards.size(), hint.primary_rank]

func _get_type_name(type_idx: int) -> String:
	match type_idx:
		0: return "单张"
		1: return "对子"
		2: return "三张"
		3: return "三带二"
		4: return "顺子"
		5: return "连对"
		6: return "钢板"
		7: return "同花顺"
		8: return "炸弹"
		9: return "火箭"
		_: return "未知"

func _on_game_ended(winner_team: int, _reason: String) -> void:
	if status_label: status_label.text = "游戏结束! 队伍 %d 获胜" % winner_team
	if hand_area: hand_area.disable_input()

func _refresh_ui() -> void:
	if controller and controller.game_state and hand_area:
		var hand: Array = controller.game_state.get_hand(0)
		hand_area.update_hand(hand)