# FriendUI (P8) —— 好友 / 私聊名单窗（M 键）。
#
#   var fu := preload("res://ui/friend_ui.gd").new()
#   add_child(fu)
#   fu.setup(m2client, canvas_parent)
#   fu.toggle()    # M 键
#
# 每行 = 在线点 + 名字 + [删除]。底部输入框 + [添加好友]。
# `friends_changed` 刷新。双击某行 → emit `whisper_to(name)`（chat_ui 可接）。
extends Node

signal whisper_to(name: String)

var client: Node
var _root: Control
var _list: VBoxContainer
var _name_edit: LineEdit
var _invite_dialog: ConfirmationDialog
var _pending_invite := ""
var _mobile_mode := false
var _title: Label
var _bottom: HBoxContainer
var _add_button: Button

func setup(m2client: Node, parent: Node) -> void:
	client = m2client
	_build(parent)
	if client.has_signal("friends_changed"):
		client.friends_changed.connect(refresh)
	if client.has_signal("friend_invite_ask"):
		client.friend_invite_ask.connect(_on_friend_invite)
	# 原版 messenger 是三固定分组（uimessenger.py MessengerFriendGroup/GuildGroup/
	# FamilyGroup）；公会与情侣组数据变化时同样刷新。
	for sig in ["guild_changed", "lover_changed"]:
		if client.has_signal(sig):
			client.connect(sig, refresh)

func is_open() -> bool:
	return _root != null and _root.visible

func get_mobile_window() -> Control:
	return _root

func set_mobile_mode(enabled: bool) -> void:
	_mobile_mode = enabled
	_apply_mobile_layout()
	if _invite_dialog and _invite_dialog.visible:
		_popup_invite_dialog()

func close() -> void:
	if _root:
		_root.visible = false
	if _invite_dialog:
		_invite_dialog.hide()

func toggle() -> void:
	_root.visible = not _root.visible
	if _root.visible:
		refresh()

func refresh() -> void:
	if not is_open() or client == null:
		return
	for c in _list.get_children():
		c.queue_free()
	# 三固定分组（对齐原版 MessengerWindow）：好友 / 公会 / 情侣。
	_section("好友")
	var friends: Array = client.get_friends() if client.has_method("get_friends") else []
	if friends.is_empty():
		var e := Label.new()
		e.text = "（好友列表为空）"
		e.add_theme_font_size_override("font_size", 11)
		e.modulate = Color(0.6, 0.6, 0.6)
		_list.add_child(e)
	else:
		for f in friends:
			_list.add_child(_row(f))
	_section("公会")
	if client.has_method("get_guild") and client.get_guild().get("in_guild", false) \
			and client.has_method("get_guild_members"):
		var members: Array = client.get_guild_members()
		members.sort_custom(func(a, b):
			return int(a.get("grade", 99)) < int(b.get("grade", 99)))
		for m in members:
			_list.add_child(_guild_row(m))
	else:
		var g := Label.new()
		g.text = "（未加入公会）"
		g.add_theme_font_size_override("font_size", 11)
		g.modulate = Color(0.6, 0.6, 0.6)
		_list.add_child(g)
	_section("情侣")
	if client.has_method("get_lover") and client.get_lover().get("valid", false):
		_list.add_child(_lover_row(client.get_lover()))
	else:
		var l := Label.new()
		l.text = "（暂无）"
		l.add_theme_font_size_override("font_size", 11)
		l.modulate = Color(0.6, 0.6, 0.6)
		_list.add_child(l)

func _section(title: String) -> void:
	var h := Label.new()
	h.text = "— %s —" % title
	h.add_theme_font_size_override("font_size", 12)
	h.modulate = Color(0.75, 0.82, 0.95)
	_list.add_child(h)

# 公会组成员：在线态来自 GC_GUILD_LOGIN/LOGOUT；点按同样发起私聊。
func _guild_row(m: Dictionary) -> Control:
	var row := HBoxContainer.new()
	row.custom_minimum_size = Vector2(640, 46) if _mobile_mode else Vector2(260, 0)
	var dot := Label.new()
	dot.text = "●"
	dot.custom_minimum_size = Vector2(28, 42) if _mobile_mode else Vector2.ZERO
	dot.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	dot.modulate = Color(0.4, 0.9, 0.4) if m.get("online", false) else Color(0.4, 0.4, 0.4)
	row.add_child(dot)
	var nm := Button.new()
	nm.text = String(m.get("name", "?"))
	nm.flat = true
	nm.custom_minimum_size = Vector2(450, 42) if _mobile_mode else Vector2(150, 0)
	nm.alignment = HORIZONTAL_ALIGNMENT_LEFT
	nm.pressed.connect(func() -> void: whisper_to.emit(String(m.get("name", ""))))
	row.add_child(nm)
	if int(m.get("grade", 1)) == 0:
		var lead := Label.new()
		lead.text = "会长"
		lead.modulate = Color(0.95, 0.8, 0.4)
		lead.add_theme_font_size_override("font_size", 10)
		row.add_child(lead)
	return row

# 情侣组成员：lover_login/logout/near/far（CHAT_TYPE_COMMAND，marriage.cpp）。
func _lover_row(lover: Dictionary) -> Control:
	var row := HBoxContainer.new()
	row.custom_minimum_size = Vector2(640, 46) if _mobile_mode else Vector2(260, 0)
	var dot := Label.new()
	dot.text = "♥"
	dot.custom_minimum_size = Vector2(28, 42) if _mobile_mode else Vector2.ZERO
	dot.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	dot.modulate = Color(0.95, 0.4, 0.55) if lover.get("online", false) else Color(0.4, 0.4, 0.4)
	row.add_child(dot)
	var nm := Button.new()
	nm.text = String(lover.get("name", "?"))
	nm.flat = true
	nm.custom_minimum_size = Vector2(450, 42) if _mobile_mode else Vector2(150, 0)
	nm.alignment = HORIZONTAL_ALIGNMENT_LEFT
	nm.pressed.connect(func() -> void: whisper_to.emit(String(lover.get("name", ""))))
	row.add_child(nm)
	if lover.get("near", false):
		var near := Label.new()
		near.text = "在身边"
		near.modulate = Color(1.0, 0.6, 0.7)
		near.add_theme_font_size_override("font_size", 10)
		row.add_child(near)
	return row

func _row(f: Dictionary) -> Control:
	var row := HBoxContainer.new()
	row.custom_minimum_size = Vector2(640, 46) if _mobile_mode else Vector2(260, 0)
	var dot := Label.new()
	dot.text = "●"
	dot.custom_minimum_size = Vector2(28, 42) if _mobile_mode else Vector2.ZERO
	dot.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	dot.modulate = Color(0.4, 0.9, 0.4) if f.get("online", false) else Color(0.4, 0.4, 0.4)
	row.add_child(dot)
	var nm := Button.new()
	nm.text = String(f.get("name", "?"))
	nm.flat = true
	nm.custom_minimum_size = Vector2(450, 42) if _mobile_mode else Vector2(150, 0)
	nm.alignment = HORIZONTAL_ALIGNMENT_LEFT
	nm.pressed.connect(func() -> void: whisper_to.emit(String(f.get("name", ""))))
	row.add_child(nm)
	if f.get("mobile", false):
		var mobile := Label.new()
		mobile.text = "手机"
		mobile.modulate = Color(0.45, 0.8, 1.0)
		mobile.add_theme_font_size_override("font_size", 10)
		row.add_child(mobile)
	var del := Button.new()
	del.text = "×"
	del.custom_minimum_size = Vector2(64, 42) if _mobile_mode else Vector2.ZERO
	del.pressed.connect(func() -> void: client.remove_friend(String(f.get("name", ""))))
	row.add_child(del)
	return row

func _on_add() -> void:
	var nm := _name_edit.text.strip_edges()
	if nm != "":
		client.add_friend(nm)
		_name_edit.clear()

func _on_friend_invite(name: String) -> void:
	if client == null or name.strip_edges() == "":
		return
	_pending_invite = name
	_invite_dialog.dialog_text = "接受“%s”的好友请求？" % name
	_popup_invite_dialog()

func _answer_invite(accept: bool) -> void:
	var name := _pending_invite
	_pending_invite = ""
	if _invite_dialog:
		_invite_dialog.hide()
	if name != "" and client != null and client.has_method("friend_answer"):
		client.friend_answer(name, accept)

func _build(parent: Node) -> void:
	_root = Control.new()
	_root.set_anchors_preset(Control.PRESET_CENTER)
	_root.position = Vector2(-150, -180)
	_root.size = Vector2(300, 360)
	_root.visible = false
	_root.set_meta("is_titlebar", true)
	_root.set_meta("mobile_title", "好友")
	parent.add_child(_root)
	var panel := Panel.new()
	panel.set_anchors_preset(Control.PRESET_FULL_RECT)
	var sb := StyleBoxFlat.new()
	sb.bg_color = Color(0.07, 0.08, 0.1, 0.96)
	sb.set_corner_radius_all(4)
	panel.add_theme_stylebox_override("panel", sb)
	_root.add_child(panel)
	_title = Label.new()
	_title.text = "好友"
	_title.position = Vector2(12, 8)
	_root.add_child(_title)
	_list = VBoxContainer.new()
	_list.position = Vector2(12, 34)
	_list.size = Vector2(276, 278)
	_list.add_theme_constant_override("separation", 3)
	_root.add_child(_list)
	_bottom = HBoxContainer.new()
	_bottom.position = Vector2(12, 320)
	_bottom.custom_minimum_size = Vector2(276, 0)
	_root.add_child(_bottom)
	_name_edit = LineEdit.new()
	_name_edit.placeholder_text = "角色名"
	_name_edit.custom_minimum_size = Vector2(190, 0)
	_bottom.add_child(_name_edit)
	_add_button = Button.new()
	_add_button.text = "添加"
	_add_button.pressed.connect(_on_add)
	_bottom.add_child(_add_button)
	_invite_dialog = ConfirmationDialog.new()
	_invite_dialog.name = "FriendInviteDialog"
	_invite_dialog.title = "好友请求"
	_invite_dialog.ok_button_text = "接受"
	_invite_dialog.cancel_button_text = "拒绝"
	_invite_dialog.confirmed.connect(func() -> void: _answer_invite(true))
	_invite_dialog.canceled.connect(func() -> void: _answer_invite(false))
	# Keep the dialog outside the toggleable friend panel: requests must still
	# be visible when the friend list window itself is closed.
	parent.add_child(_invite_dialog)
	if parent.has_method("track_mobile_modal"):
		parent.track_mobile_modal(_invite_dialog)
	_apply_mobile_layout()

func _popup_invite_dialog() -> void:
	if not is_instance_valid(_invite_dialog):
		return
	if _mobile_mode:
		# Native Window remains the owner of the confirmation signals, while its
		# mobile footprint is large enough for landscape touch targets and the
		# software keyboard-safe input area.
		_invite_dialog.set_meta("mobile_title", "好友请求")
		_invite_dialog.min_size = Vector2i(480, 220)
		_invite_dialog.size = Vector2i(480, 220)
		_invite_dialog.popup_centered(Vector2i(480, 220))
	else:
		_invite_dialog.popup_centered()

func _apply_mobile_layout() -> void:
	if _root == null or _title == null or _bottom == null:
		return
	if _mobile_mode:
		_root.size = Vector2(680, 344)
		_root.position = Vector2(-340, -172)
		_title.position = Vector2(18, 48)
		_title.add_theme_font_size_override("font_size", 16)
		_list.position = Vector2(18, 88)
		_list.size = Vector2(644, 190)
		_bottom.position = Vector2(18, 288)
		_bottom.custom_minimum_size = Vector2(644, 44)
		_name_edit.custom_minimum_size = Vector2(520, 44)
		_add_button.custom_minimum_size = Vector2(112, 44)
	else:
		_root.size = Vector2(300, 360)
		_root.position = Vector2(-150, -180)
		_title.position = Vector2(12, 8)
		_title.remove_theme_font_size_override("font_size")
		_list.position = Vector2(12, 34)
		_list.size = Vector2(276, 278)
		_bottom.position = Vector2(12, 320)
		_bottom.custom_minimum_size = Vector2(276, 0)
		_name_edit.custom_minimum_size = Vector2(190, 0)
		_add_button.custom_minimum_size = Vector2(0, 0)