extends PanelContainer
## Satıcı dükkanı — bir NPC vendor'ın stoğu. Şehir haritasındaki pine tıklayınca açılır.
## İki sekme: 🛒 Satın Al (sabit stok + oyuncu konsinyeleri, ömür rozetli) / 💰 Sat.
## Kod ile kurulur. Node adı "VendorShop". Alt-sheet.

const PANEL_HEIGHT := 640.0

const RARITY_COLOR := {
	"common": Color(0.8, 0.8, 0.8), "uncommon": Color(0.4, 0.85, 0.4),
	"rare": Color(0.35, 0.6, 1.0), "epic": Color(0.7, 0.45, 0.95),
	"legendary": Color(1.0, 0.65, 0.2),
}

var _npc_id := 0
var _npc_name := ""
var _tab := "buy"   # "buy" | "sell"
var _title: Label
var _info: Label
var _tab_buy: Button
var _tab_sell: Button
var _list: VBoxContainer

func _ready() -> void:
	name = "VendorShop"
	visible = false
	_build_ui()

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(0.12, 0.11, 0.09, 0.98)
	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()
	_title = Label.new()
	_title.add_theme_font_size_override("font_size", 18)
	_title.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	top.add_child(_title)
	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)

	_info = Label.new()
	_info.add_theme_font_size_override("font_size", 13)
	_info.add_theme_color_override("font_color", Color(0.95, 0.8, 0.35))
	vbox.add_child(_info)

	var tabs := HBoxContainer.new()
	tabs.add_theme_constant_override("separation", 6)
	_tab_buy = _tab_btn(tabs, "🛒 Satın Al", "buy")
	_tab_sell = _tab_btn(tabs, "💰 Sat", "sell")
	vbox.add_child(tabs)

	var 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", 6)
	scroll.add_child(_list)

func _tab_btn(parent: HBoxContainer, label: String, key: String) -> Button:
	var b := Button.new()
	b.text = label
	b.toggle_mode = true
	b.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	b.pressed.connect(func() -> void:
		_tab = key
		_sync_tabs()
		refresh())
	parent.add_child(b)
	return b

func _sync_tabs() -> void:
	_tab_buy.button_pressed = _tab == "buy"
	_tab_sell.button_pressed = _tab == "sell"

func open(npc_id: int, npc_name: String = "") -> void:
	_npc_id = npc_id
	_npc_name = npc_name
	_tab = "buy"
	_sync_tabs()
	visible = true
	refresh()

func refresh() -> void:
	_info.text = "🪙 %d" % int(GameState.character.get("gold", 0))
	for c in _list.get_children():
		c.queue_free()
	if _tab == "buy":
		await _render_buy()
	else:
		await _render_sell()

func _muted(txt: String) -> Label:
	var l := Label.new()
	l.text = txt
	l.add_theme_color_override("font_color", Color(0.6, 0.6, 0.6))
	return l

func _render_buy() -> void:
	var res: Dictionary = await GameState.npc_shop(_npc_id)
	if not res.ok or not (res.body is Dictionary):
		_list.add_child(_muted("Dükkan yüklenemedi."))
		return
	var body: Dictionary = res.body
	_title.text = "🏪 %s" % str(body.get("npc_name", _npc_name))
	var role := str(body.get("role", ""))
	if role != "":
		_title.text += " (%s)" % role
	var items: Array = body.get("items", [])
	if items.is_empty():
		_list.add_child(_muted("Bu satıcının stoğu boş."))
		return
	var gold := int(GameState.character.get("gold", 0))
	for it in items:
		if it is Dictionary:
			_list.add_child(_buy_row(it, gold))

func _buy_row(it: Dictionary, gold: int) -> HBoxContainer:
	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 8)
	var info := VBoxContainer.new()
	info.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	var name_lbl := Label.new()
	name_lbl.text = str(it.get("item_name", ""))
	name_lbl.add_theme_font_size_override("font_size", 15)
	name_lbl.add_theme_color_override("font_color", RARITY_COLOR.get(str(it.get("rarity", "common")), Color.WHITE))
	info.add_child(name_lbl)
	var meta := Label.new()
	var price := int(it.get("unit_price", 0))
	var src := str(it.get("source", "base"))
	if src == "player":
		var exp := int(it.get("expires_in_h", 0))
		var qty := int(it.get("qty", 0))
		meta.text = "🪙 %d • kalan %d • ⏳ %ds (oyuncu malı)" % [price, qty, exp]
		meta.add_theme_color_override("font_color", Color(0.7, 0.75, 0.85))
	else:
		meta.text = "🪙 %d • sınırsız" % price
		meta.add_theme_color_override("font_color", Color(0.6, 0.62, 0.58))
	meta.add_theme_font_size_override("font_size", 12)
	info.add_child(meta)
	row.add_child(info)

	var qty_spin := SpinBox.new()
	qty_spin.min_value = 1
	qty_spin.max_value = maxi(1, int(it.get("qty", 10))) if src == "player" else 10
	qty_spin.value = 1
	qty_spin.custom_minimum_size = Vector2(70, 0)
	row.add_child(qty_spin)

	var btn := Button.new()
	if gold < price:
		btn.text = "🪙 az"
		btn.disabled = true
	else:
		btn.text = "Al"
		btn.pressed.connect(_on_buy.bind(btn, str(it.get("item_code", "")), qty_spin))
	row.add_child(btn)
	return row

func _render_sell() -> void:
	var inv: Array = GameState.inventory
	var sellable := inv.filter(func(r: Variant) -> bool: return r is Dictionary and int(r.get("qty", 0)) > 0)
	if sellable.is_empty():
		_list.add_child(_muted("Envanterin boş."))
		return
	_list.add_child(_muted("Satıcıya sat → gold. (Satıcının normalde satmadığı ürün 24s dükkanına düşer.)"))
	for r in sellable:
		_list.add_child(_sell_row(r))

func _sell_row(r: Dictionary) -> HBoxContainer:
	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 8)
	var name_lbl := Label.new()
	name_lbl.text = "%s ×%d" % [str(r.get("item_name", "")), int(r.get("qty", 0))]
	name_lbl.add_theme_font_size_override("font_size", 15)
	name_lbl.add_theme_color_override("font_color", RARITY_COLOR.get(str(r.get("rarity", "common")), Color.WHITE))
	name_lbl.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	row.add_child(name_lbl)

	var qty_spin := SpinBox.new()
	qty_spin.min_value = 1
	qty_spin.max_value = maxi(1, int(r.get("qty", 1)))
	qty_spin.value = 1
	qty_spin.custom_minimum_size = Vector2(70, 0)
	row.add_child(qty_spin)

	var btn := Button.new()
	btn.text = "Sat"
	btn.pressed.connect(_on_sell.bind(btn, str(r.get("item_code", "")), qty_spin))
	row.add_child(btn)
	return row

func _on_buy(btn: Button, code: String, qty_spin: SpinBox) -> void:
	btn.disabled = true
	var res: Dictionary = await GameState.npc_buy(_npc_id, code, int(qty_spin.value))
	_toast(res, "✅ Satın alındı", "🚫 Alınamadı")
	await refresh()

func _on_sell(btn: Button, code: String, qty_spin: SpinBox) -> void:
	btn.disabled = true
	var res: Dictionary = await GameState.npc_sell(_npc_id, code, int(qty_spin.value))
	_toast(res, "✅ Satıldı", "🚫 Satılamadı")
	await refresh()

func _toast(res: Dictionary, ok_msg: String, fail_prefix: String) -> void:
	var toast := get_tree().get_first_node_in_group("toast")
	var msg := ok_msg
	var col := Color(0.6, 0.85, 0.5)
	if not res.ok:
		col = Color(0.95, 0.5, 0.4)
		msg = fail_prefix
		if res.body is Dictionary and res.body.has("detail"):
			msg = "%s: %s" % [fail_prefix, str(res.body["detail"])]
	if toast != null and toast.has_method("show_toast"):
		toast.call("show_toast", msg, col)