extends PanelContainer
## Sohbet paneli — kod ile kurulur (tscn'de yok), WsClient chat sinyallerini dinler.
## hud.gd oluşturup HUD CanvasLayer'ına ekler. Node adı "ChatPanel" (world.gd blokaj kontrolü).

const MAX_ROWS := 60
const PANEL_HEIGHT := 480.0

var _list: VBoxContainer
var _scroll: ScrollContainer
var _input: LineEdit
var _tab_global: Button
var _tab_local: Button

## Aktif kanal: "global" | "local". Mesajlar kanal başına bellekte tutulur,
## sekme değişince yeniden çizilir.
var _channel := "global"
var _msgs := {"global": [], "local": []}

func _ready() -> void:
	name = "ChatPanel"
	visible = false
	_build_ui()
	WsClient.chat_received.connect(_on_chat)
	WsClient.chat_history.connect(_on_history)
	WsClient.local_chat_history.connect(_on_local_history)
	# Lokasyon değişince yerel geçmiş bayatlar
	GameState.traveled.connect(func(_p: Dictionary) -> void:
		_msgs["local"] = []
		if visible and _channel == "local":
			WsClient.request_local_history())

func _build_ui() -> void:
	set_anchors_preset(Control.PRESET_BOTTOM_WIDE)
	offset_top = -PANEL_HEIGHT
	offset_left = 8
	offset_right = -8
	offset_bottom = -8
	var sb := StyleBoxFlat.new()
	sb.bg_color = Color(0.08, 0.1, 0.13, 0.95)
	sb.set_corner_radius_all(10)
	add_theme_stylebox_override("panel", sb)

	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 12)
	margin.add_theme_constant_override("margin_right", 12)
	margin.add_theme_constant_override("margin_top", 8)
	margin.add_theme_constant_override("margin_bottom", 8)
	add_child(margin)

	var vbox := VBoxContainer.new()
	vbox.add_theme_constant_override("separation", 6)
	margin.add_child(vbox)

	var top := HBoxContainer.new()
	var title := Label.new()
	title.text = "💬 Sohbet"
	title.add_theme_font_size_override("font_size", 18)
	title.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	top.add_child(title)
	_tab_global = Button.new()
	_tab_global.text = "🌍 Genel"
	_tab_global.toggle_mode = true
	_tab_global.button_pressed = true
	_tab_global.pressed.connect(func() -> void: _switch_channel("global"))
	top.add_child(_tab_global)
	_tab_local = Button.new()
	_tab_local.text = "📍 Burada"
	_tab_local.toggle_mode = true
	_tab_local.pressed.connect(func() -> void: _switch_channel("local"))
	top.add_child(_tab_local)
	var close_btn := Button.new()
	close_btn.text = "✕"
	close_btn.pressed.connect(func() -> void: visible = false)
	top.add_child(close_btn)
	vbox.add_child(top)

	_scroll = ScrollContainer.new()
	_scroll.size_flags_vertical = Control.SIZE_EXPAND_FILL
	_scroll.horizontal_scroll_mode = ScrollContainer.SCROLL_MODE_DISABLED
	vbox.add_child(_scroll)

	_list = VBoxContainer.new()
	_list.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	_list.add_theme_constant_override("separation", 4)
	_scroll.add_child(_list)

	var bottom := HBoxContainer.new()
	bottom.add_theme_constant_override("separation", 8)
	_input = LineEdit.new()
	_input.placeholder_text = "Mesaj yaz…"
	_input.max_length = 300
	_input.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	_input.text_submitted.connect(func(_t: String) -> void: _send())
	bottom.add_child(_input)
	var send_btn := Button.new()
	send_btn.text = "Gönder"
	send_btn.pressed.connect(_send)
	bottom.add_child(send_btn)
	vbox.add_child(bottom)

func open() -> void:
	visible = true
	if _channel == "local" and (_msgs["local"] as Array).is_empty():
		WsClient.request_local_history()
	_scroll_to_bottom()
	_input.grab_focus()

func _switch_channel(ch: String) -> void:
	_channel = ch
	_tab_global.button_pressed = ch == "global"
	_tab_local.button_pressed = ch == "local"
	_input.placeholder_text = "Mesaj yaz…" if ch == "global" else "Buradakilere yaz…"
	if ch == "local":
		WsClient.request_local_history()
	_rerender()

func _send() -> void:
	var msg := _input.text.strip_edges()
	if msg == "":
		return
	WsClient.send_chat(msg, _channel)
	_input.text = ""
	_input.grab_focus()

func _on_history(messages: Array) -> void:
	_msgs["global"] = messages.duplicate()
	if _channel == "global":
		_rerender()

func _on_local_history(messages: Array) -> void:
	_msgs["local"] = messages.duplicate()
	if _channel == "local":
		_rerender()

func _on_chat(msg: Dictionary) -> void:
	var ch := str(msg.get("channel", "global"))
	if not _msgs.has(ch):
		return
	var arr: Array = _msgs[ch]
	arr.append(msg)
	while arr.size() > MAX_ROWS:
		arr.pop_front()
	if ch == _channel:
		_append_row(msg)
		while _list.get_child_count() > MAX_ROWS:
			var oldest := _list.get_child(0)
			_list.remove_child(oldest)
			oldest.queue_free()
		_scroll_to_bottom()

func _rerender() -> void:
	for c in _list.get_children():
		c.queue_free()
	for m in (_msgs[_channel] as Array):
		if m is Dictionary:
			_append_row(m)
	_scroll_to_bottom()

func _append_row(msg: Dictionary) -> void:
	var own: bool = int(msg.get("char_id", 0)) == int(GameState.character.get("id", -1))
	var row := RichTextLabel.new()
	row.bbcode_enabled = true
	row.fit_content = true
	row.scroll_active = false
	row.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	row.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	var name_color := "#7ee08a" if own else "#e0c060"
	row.text = "[color=%s]%s:[/color] %s" % [
		name_color,
		str(msg.get("name", "?")).replace("[", "［"),
		str(msg.get("text", "")).replace("[", "［"),
	]
	_list.add_child(row)

func _scroll_to_bottom() -> void:
	if not visible:
		return
	await get_tree().process_frame
	_scroll.scroll_vertical = int(_scroll.get_v_scroll_bar().max_value)