# 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 = {}
var _mobile_mode := false
var _mobile_root: Control
var _mobile_buttons: Dictionary = {}

const MOBILE_SIZE := Vector2(700, 330)

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:
	if _mobile_mode:
		return _mobile_root != null and is_instance_valid(_mobile_root)
	return not _win.is_empty() and is_instance_valid(_win.get("root"))

func set_mobile_mode(enabled: bool) -> void:
	if enabled != _mobile_mode and is_open():
		close()
	_mobile_mode = enabled
	if is_instance_valid(help_ui) and help_ui.has_method("set_mobile_mode"):
		help_ui.set_mobile_mode(enabled)

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

func close() -> void:
	if _mobile_mode:
		var root := _mobile_root
		_mobile_root = null
		_mobile_buttons.clear()
		if root and is_instance_valid(root) and ui:
			ui.close(root)
		return
	if is_open():
		ui.close(_win["root"])
	_win = {}

func open() -> void:
	if _mobile_mode:
		_open_mobile()
		return
	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 _open_mobile() -> void:
	if is_open():
		return
	_mobile_root = Control.new()
	_mobile_root.name = "MobileSystemMenuWindow"
	_mobile_root.size = MOBILE_SIZE
	_mobile_root.set_meta("mobile_title", "系统菜单")
	_mobile_root.mouse_filter = Control.MOUSE_FILTER_STOP
	var panel := Panel.new()
	panel.set_anchors_preset(Control.PRESET_FULL_RECT)
	panel.add_theme_stylebox_override("panel", _mobile_panel_style())
	_mobile_root.add_child(panel)
	var hint := Label.new()
	hint.text = "账户、设置和帮助"
	hint.position = Vector2(22, 52)
	hint.size = Vector2(640, 24)
	hint.add_theme_font_size_override("font_size", 13)
	hint.add_theme_color_override("font_color", Color(0.68, 0.78, 0.92))
	_mobile_root.add_child(hint)
	var grid := GridContainer.new()
	grid.name = "MobileSystemActions"
	grid.columns = 2
	grid.position = Vector2(22, 82)
	grid.size = Vector2(656, 174)
	grid.add_theme_constant_override("h_separation", 12)
	grid.add_theme_constant_override("v_separation", 8)
	_mobile_root.add_child(grid)
	for action in ["帮助", "商城", "系统设置", "游戏设置", "选择角色", "登出"]:
		var button := Button.new()
		button.name = "MobileAction_%s" % action
		button.text = String(action)
		button.custom_minimum_size = Vector2(322, 48)
		button.add_theme_font_size_override("font_size", 14)
		var selected := String(action)
		button.pressed.connect(func(): _mobile_action(selected))
		_mobile_buttons[selected] = button
		grid.add_child(button)
	var exit := Button.new()
	exit.name = "MobileExitButton"
	exit.text = "退出游戏"
	exit.position = Vector2(22, 272)
	exit.size = Vector2(154, 42)
	exit.add_theme_font_size_override("font_size", 13)
	exit.pressed.connect(func(): _mobile_action("退出游戏"))
	_mobile_buttons["退出游戏"] = exit
	_mobile_root.add_child(exit)
	var cancel := Button.new()
	cancel.name = "MobileCancelButton"
	cancel.text = "取消"
	cancel.position = Vector2(524, 272)
	cancel.size = Vector2(154, 42)
	cancel.add_theme_font_size_override("font_size", 13)
	cancel.pressed.connect(close)
	_mobile_buttons["取消"] = cancel
	_mobile_root.add_child(cancel)
	ui.open(_mobile_root, true)

func _mobile_action(action: String) -> void:
	match action:
		"帮助":
			close()
			open_help()
		"商城":
			_send_and_close("/in_game_mall")
		"系统设置":
			close()
			if system_option_ui and system_option_ui.has_method("open"):
				system_option_ui.open()
		"游戏设置":
			close()
			if game_option_ui and game_option_ui.has_method("open"):
				game_option_ui.open()
		"选择角色": _send_and_close("/phase_select")
		"登出": _send_and_close("/logout")
		"退出游戏": get_tree().quit()

func _send_and_close(command: String) -> void:
	if client and client.has_method("say"):
		client.say(0, command)
	close()

func _mobile_panel_style() -> StyleBoxFlat:
	var style := StyleBoxFlat.new()
	style.bg_color = Color(0.04, 0.065, 0.1, 0.98)
	style.border_color = Color(0.52, 0.68, 0.9, 0.86)
	style.set_border_width_all(1)
	style.set_corner_radius_all(10)
	style.shadow_color = Color(0, 0, 0, 0.45)
	style.shadow_size = 12
	return style

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)
		if help_ui.has_method("set_mobile_mode"):
			help_ui.set_mobile_mode(_mobile_mode)
	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():
		_send_and_close("/in_game_mall"))
	_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():
		_send_and_close("/phase_select"))
	_btn("logout_button", func():
		_send_and_close("/logout"))
	_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)