# SystemMenuUI (P11) —— ESC 系统菜单（1:1 迁移 `assets/root/uisystem.py` `SystemDialog`
# 的 `__LoadSystemMenu_Default`；布局走真 `assets/uiscript/uiscript/systemdialog.py`）。
#
#   var sm := preload("res://ui/system_menu_ui.gd").new()
#   add_child(sm)
#   sm.setup(ui_manager, m2client, assets_root, system_option_ui, game_option_ui)
#   sm.toggle()      # ESC（无其它窗打开时）
#
# 按钮绑定逐字对照 uisystem.py：
#   help_button          → interface.OpenHelpWindow（help_ui.gd，§8.3）
#   mall_button          → net.SendChatPacket("/in_game_mall")
#   system_option_button → uiSystemOption.OptionDialog（system_option_ui）
#   game_option_button   → uiGameOption.OptionDialog（game_option_ui）
#   change_button        → net.ExitGame() = SendChatPacket("/phase_select")
#   logout_button        → net.LogOutGame() = SendChatPacket("/logout")
#   exit_button          → net.ExitApplication() = 退出进程
#   cancel_button / 标题栏 → 关闭
extends Node

const HelpUI = preload("res://ui/help_ui.gd")

const LABELS := {
	"help_button": "帮助", "mall_button": "商城", "system_option_button": "系统设置",
	"game_option_button": "游戏设置", "change_button": "选择角色", "logout_button": "登出",
	"exit_button": "退出游戏", "cancel_button": "取消",
}

var ui: CanvasLayer
var client: Node
var assets_root := ""
var uiscript_dir := ""
var system_option_ui: Node
var game_option_ui: Node
var help_ui: Node                  # HelpUI（§8.3）—— 未注入时 _ensure_help() 懒建
var toast: Callable = Callable()   # 可选：func(msg: String) 显示提示

var _win: Dictionary = {}

func setup(ui_manager: CanvasLayer, m2client: Node, assets := "",
		sys_opt: Node = null, game_opt: Node = null, help_win: Node = null) -> void:
	ui = ui_manager
	client = m2client
	system_option_ui = sys_opt
	game_option_ui = game_opt
	help_ui = help_win
	assets_root = assets
	if assets_root == "" and ui and "assets_root" in ui:
		assets_root = ui.assets_root
	uiscript_dir = assets_root.path_join("uiscript/uiscript")
	if not DirAccess.dir_exists_absolute(uiscript_dir):
		uiscript_dir = assets_root.path_join("uiscript")

func is_open() -> bool:
	return not _win.is_empty() and is_instance_valid(_win.get("root"))

func toggle() -> void:
	if is_open(): close()
	else: open()

func close() -> void:
	if is_open():
		ui.close(_win["root"])
	_win = {}

func open() -> void:
	if is_open():
		return
	var path := uiscript_dir.path_join("systemdialog.py")
	if not FileAccess.file_exists(path):
		push_warning("SystemMenuUI: no systemdialog.py at " + path)
		return
	_win = ui.open_script(path, assets_root, true)   # modal
	if not is_open():
		return
	_relabel()
	_wire()

func _node(nm: String) -> Control:
	if _win.is_empty():
		return null
	var n = _win.get("nodes", {}).get(nm, null)
	return n if n is Control else null

func _relabel() -> void:
	for nm in LABELS:
		var n := _node(nm)
		if n and n.has_method("set_text"):
			n.set_text(LABELS[nm])

func _btn(nm: String, cb: Callable) -> void:
	var b := _node(nm)
	if b is BaseButton:
		b.pressed.connect(cb)

# uisystem.py: self.interface.OpenHelpWindow()。未注入 help_ui 时懒建一个，
# 复用本菜单的 ui / client / assets_root。
func _ensure_help() -> Node:
	if not is_instance_valid(help_ui):
		help_ui = HelpUI.new()
		add_child(help_ui)
		help_ui.setup(ui, client, assets_root)
	return help_ui

func open_help() -> void:
	_ensure_help().open()

func toggle_help() -> void:
	_ensure_help().toggle()

func _wire() -> void:
	_btn("help_button", func():
		close()
		open_help())
	_btn("mall_button", func():
		if client and client.has_method("say"):
			client.say(0, "/in_game_mall")   # net.SendChatPacket("/in_game_mall")
		close())
	_btn("system_option_button", func():
		close()
		if system_option_ui and system_option_ui.has_method("open"):
			system_option_ui.open())
	_btn("game_option_button", func():
		close()
		if game_option_ui and game_option_ui.has_method("open"):
			game_option_ui.open())
	_btn("change_button", func():
		if client and client.has_method("say"):
			client.say(0, "/phase_select")   # net.ExitGame()
		close())
	_btn("logout_button", func():
		if client and client.has_method("say"):
			client.say(0, "/logout")         # net.LogOutGame()
		close())
	_btn("exit_button", func(): get_tree().quit())
	_btn("cancel_button", close)
	var board := _node("board")
	if board:
		for x in board.find_children("*", "BaseButton", true, false):
			if x.get_meta("is_titlebar", false):
				x.pressed.connect(close)