# HelpUI (P11 / §8.3) —— 游戏内帮助窗（1:1 迁移 `assets/root/uihelp.py` 的
# `HelpWindow`，单页版：`ENABLE_HELP_MULTIPAGE = 0` → `LoadDialogSinglePage()`）。
#
#   var hw := preload("res://ui/help_ui.gd").new()
#   add_child(hw)
#   hw.setup(ui_manager, m2client, assets_root)
#   hw.toggle()      # H 键（非 Ctrl）
#   hw.open()        # ESC 系统菜单 help_button
#
# 布局走真 `assets/uiscript/uiscript/helpwindow.py`（UiScript → UiBuild）。
# 文本逐字对齐 `uiScriptLocale.HELP_*`（`locale/locale/<lang>/locale_interface.txt`）；
# `ui_manager` 没接 locale 回调时，`helpwindow.py` 里的 `uiScriptLocale.X` 会被
# UiScript 解析成 `<X>` 占位，`_relabel()` 再用本工程的 `Locale` 表 + 英文兜底补回。
#
# 入口逐字对照 `game.py:459 __PressHKey()`：非 Ctrl → `interface.OpenHelpWindow()`
# （Ctrl+H 是 `net.SendChatPacket("/user_horse_ride")`，不在本窗职责内）。
# 关闭对照 `helpwindow.py` 的 `HelpWindow`：`close_button` / `OnPressEscapeKey` /
# `OnPressExitKey` / `OnKeyDown(DIK_H)` 都调用 `eventClose`。ESC 由 `UiManager`
# 的窗口栈统一处理（关最顶层）；H 键复用 `toggle()`。
extends Node

# helpwindow.py 的 name → uiScriptLocale key（逐字，含原脚本里重名的两个 `help_02`）。
const FLOAT_ROWS := {
	"help_01": "HELP_MOVE_KEY",
	"help_02": "HELP_CONTROL_CAMERA_BY_MIDDLEBUTTON",  # 原脚本第二个 help_02（后者覆盖）
	"help_03": "HELP_SHOW_ALL_NAME",
	"help_04": "HELP_OPEN_CHAT",
	"help_05": "HELP_OPEN_WHISPER",
	"help_06": "HELP_ATTACK_KEY",
	"help_07": "HELP_OPEN_CHARACTER",
	"help_08": "HELP_OPEN_SKILL",
	"help_09": "HELP_OPEN_QUEST",
	"help_10": "HELP_OPEN_INVENTORY",
	"help_11": "HELP_OPEN_LOG",
	"help_12": "HELP_OPEN_ZONEMAP",
	"help_13": "HELP_OPEN_MINIMAP",
	"help_14": "HELP_CHANGE_PK_MODE",
	"help_15": "HELP_PICK_ITEM",
	"help_16": "HELP_SCREEN_CAPTURE",
	"help_17": "HELP_GUILD_WINDOW",
	"help_18": "HELP_MESSENGER_WINDOW",
	"help_19": "HELP_HELP",
}

# 任务栏贴纸标签（helpwindow.py 的 `taskbar_help_*` 文本）。
const TASKBAR_ROWS := {
	"taskbar_help_01": "HELP_FURY",
	"taskbar_help_02": "HELP_HP",
	"taskbar_help_03": "HELP_SP",
	"taskbar_help_04": "HELP_EXP",
	"taskbar_help_05": "HELP_MOUSE_LEFT",
	"taskbar_help_06": "HELP_MOUSE_RIGHT",
	"taskbar_help_07": "HELP_QUICKSLOT",
	"taskbar_help_08a": "HELP_SYSTEM_BUTTON",
	"taskbar_help_08b": "HELP_CHARACTER_BUTTON1",
	"taskbar_help_08c": "HELP_CHARACTER_BUTTON2",
}

# uiScriptLocale 兜底（逐字取自 `locale/locale/en/locale_interface.txt`）——
# 资产缺 locale 表或 UiManager 没接 locale 回调时用这份。
const FALLBACK := {
	"HELP_MOVE_KEY": "Panel: W, A, S, D or arrow keys",
	"HELP_CONTROL_CAMERA_BY_RIGHTBUTTON": "Camera View: right or middle mouse button",
	"HELP_CONTROL_CAMERA_BY_MIDDLEBUTTON": "Camera View: middle or right mouse button",
	"HELP_SHOW_ALL_NAME": "Display Names: Alt",
	"HELP_OPEN_CHAT": "Open chat window: Enter",
	"HELP_OPEN_WHISPER": "Open Whisper Window: Shift + Enter",
	"HELP_ATTACK_KEY": "Attack: left mouse button or space bar",
	"HELP_OPEN_CHARACTER": "Open character window: C",
	"HELP_OPEN_SKILL": "Open Skill Window: V",
	"HELP_OPEN_QUEST": "Open Task Window: N",
	"HELP_OPEN_INVENTORY": "Open inventory window: I",
	"HELP_OPEN_LOG": "Open Chatlog: L",
	"HELP_OPEN_ZONEMAP": "Open Large Map: M",
	"HELP_OPEN_MINIMAP": "Open mini map: Shift + M",
	"HELP_CHANGE_PK_MODE": "Change attack mode: change setting of left mouse button",
	"HELP_PICK_ITEM": "Collect Items: ^ or Y or left mouse button",
	"HELP_SCREEN_CAPTURE": "Save Screenshot: Print (will be saved in file \"Metin2\\screenshot\")",
	"HELP_GUILD_WINDOW": "Open Guild Window: Alt + G",
	"HELP_MESSENGER_WINDOW": "Open Friends List: Alt + M",
	"HELP_HELP": "Display help: H",
	"HELP_FURY": "Ingame Item Shop",
	"HELP_HP": "Hit Points (HP)",
	"HELP_SP": "Spell Points (SP)",
	"HELP_EXP": "Experience",
	"HELP_MOUSE_LEFT": "Function of the Left Mouse button",
	"HELP_MOUSE_RIGHT": "Function of the Right Mouse button",
	"HELP_QUICKSLOT": "Fast Access Fields",
	"HELP_SYSTEM_BUTTON": "System buttons",
	"HELP_CHARACTER_BUTTON1": "(Character Window, Inventory Window,",
	"HELP_CHARACTER_BUTTON2": "List of Friends and Options)",
	"CLOSE": "Close",
}

var ui: CanvasLayer
var client: Node
var assets_root := ""
var uiscript_dir := ""

var _win: Dictionary = {}
var _loc                    # Locale（res://locale.gd）

func setup(ui_manager: CanvasLayer, m2client: Node = null, assets := "") -> void:
	ui = ui_manager
	client = m2client
	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")
	var LocaleScript = load("res://locale.gd")
	if LocaleScript:
		_loc = LocaleScript.new()
		_loc.setup(assets_root, "en")

# --- open / close ---------------------------------------------------

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("helpwindow.py")
	if not FileAccess.file_exists(path):
		push_warning("HelpUI: no helpwindow.py at " + path)
		return
	_win = ui.open_script(path, assets_root)
	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

# --- content (uihelp.py.LoadDialogSinglePage + helpwindow.py 文本) ---------

# 解析 `<KEY>` 占位 / 应用 name→key 映射：先扫所有 Label（覆盖原脚本重名的两个
# `help_02`），再按映射兜一遍（nodes dict 只留最后一个同名）。
func _relabel() -> void:
	var root: Control = _win.get("root")
	if root:
		for lbl in root.find_children("*", "Label", true, false):
			var t := String(lbl.text)
			if t.length() >= 2 and t.begins_with("<") and t.ends_with(">"):
				lbl.text = _text(t.substr(1, t.length() - 2))
	for nm in FLOAT_ROWS:
		_set_text(nm, _text(FLOAT_ROWS[nm]))
	for nm in TASKBAR_ROWS:
		_set_text(nm, _text(TASKBAR_ROWS[nm]))
	_set_text("close_button", _text("CLOSE"))

func _set_text(nm: String, s: String) -> void:
	var n := _node(nm)
	if n == null:
		return
	if n.has_method("set_text"):
		n.set_text(s)
	elif "text" in n:
		n.text = s

# uiScriptLocale.<key> 的取值：优先本工程 Locale 表，否则英文兜底，否则原样 key。
func _text(key: String) -> String:
	if _loc != null and _loc.has(key):
		return _loc.t(key)
	return FALLBACK.get(key, key)

# 已绑定的帮助行文本（供自检 / 调试）。
func rows() -> Array:
	var out: Array = []
	for nm in FLOAT_ROWS:
		var n := _node(nm)
		if n and "text" in n:
			out.append(String(n.text))
	return out

# --- wiring (uihelp.py.HelpWindow.SetCloseEvent) ------------------------

func _wire() -> void:
	var btn := _node("close_button")
	if btn is BaseButton:
		btn.pressed.connect(close)
	# helpwindow.py2 的多页按钮在单页版不存在；此处不绑。