## VERTICAL SLICE - NOT FOR PRODUCTION
## 商店覆盖层（模态）：legacy 固定三件面与 pool 共享池货架面双承载，购买/离开/刷新意图经信号外发。
## 商品/货架快照与余额经组合根投喂（现价=runner 投影）——本类零定价复算。
class_name ShopOverlay
extends Control

signal buy_requested(product_id: String)   # legacy=product_id / pool=kind_id（组合根按模式分发）
signal leave_pressed

const ATTR_LABELS := {"atk": "攻击", "max_hp": "生命上限", "armor_class": "护甲"}   # 档位文案轴（数据契约 attr 词表）
const KIND_LABELS := {"attack": "攻击", "max_hp": "生命上限", "armor": "护甲", "ap": "行动点", "heal": "回复", "feat_ticket": "专长凭证"}   # 货架件值文案轴（共享池 kind 词表——迭代 11 第②批）

var _gp_label: Label
var _refresh_btn: Button   # M6 呈现位——MC-1 起由 set_refresh_display 投喂启用
signal refresh_requested   # MC-1：刷新意图（pool 面；组合根接 presenter.on_shop_refresh）
var _visit_label: Label    # T6 爬价规则行（demo .svisit——已购件数/现价倍数由 presenter 投喂）
var _cards_box: VBoxContainer
var _foot_hint: Label      # T6 底注（demo .shop-foot .hint）
var _card_rows: Array[Dictionary] = []   # [{product_id, price, bought, btn}]——refresh_state 就地重刷（零重建回流）
var _shelf_rows: Array[Dictionary] = []  # [{kind_id, btn}]——pool 面卡片（买后整架重建=重抽反馈）


func _init() -> void:
	# 全屏页形态（demo ⑤ #v-shop——06 在册 D2 商店全屏化/D1 竖卡
	# 232×352 落地）——暖亮底+石纹弱质感+暗角（UiKit.page_shell）+56px 通栏顶条（标题+刷新图标钮/
	# 角标+GP 框）+ 爬价规则行 + bcard 三竖卡居中 + 底部离开钮与池源注记。
	# M6 遗产：库存余量退役（关卡节点地图 v1.5-a 用户裁）；刷新钮呈现位照摆（机制=MC-1 投喂）。
	# legacy 面（open_shop）行卡同壳呈现（shop=off 对照承载原样）。高内聚边界不变：纯视图 setter 面。
	var page: Dictionary[Variant, Variant] = UiKit.page_shell(self, true)
	var top: HBoxContainer = page.top_row
	top.add_child(UiKit.label("商 店",UiKit.FS_TITLE, true, UiKit.WARM))
	var top_sp := Control.new()
	top_sp.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	top.add_child(top_sp)
	_refresh_btn = UiKit.button("", 0.0)   # 图标钮自设 44×44——豁免宽度基准
	_refresh_btn.icon = UiKit.load_tex(UiKit.TEX_ICON_REFRESH)
	_refresh_btn.custom_minimum_size = Vector2(44, 44)
	_refresh_btn.disabled = true   # MC-1 投喂后启用（set_refresh_display）
	_refresh_btn.pressed.connect(_emit_refresh_requested)
	top.add_child(_refresh_btn)
	var stock_badge := UiKit.label("0",UiKit.FS_CAPTION, true, UiKit.INK_ON_GOLD)
	stock_badge.mouse_filter = Control.MOUSE_FILTER_IGNORE
	stock_badge.set_anchors_preset(Control.PRESET_TOP_RIGHT)
	stock_badge.offset_left = -22.0
	stock_badge.offset_top = -6.0
	_refresh_btn.add_child(stock_badge)
	var gp_chip := PanelContainer.new()
	gp_chip.add_theme_stylebox_override("panel",
		UiKit.panel_flat(UiKit.CANDLE, UiKit.CAMP_HEADER_BAND,UiKit.RADIUS_OBJECT, 1, Vector4(12, 4, 12, 4)))
	top.add_child(gp_chip)
	_gp_label = UiKit.label("GP 0",UiKit.FS_BODY, true, UiKit.INK_ON_GOLD)
	gp_chip.add_child(_gp_label)
	var box: VBoxContainer = page.box
	_visit_label = UiKit.label("",UiKit.FS_BODY, false, UiKit.WARM_SOFT)
	_visit_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	box.add_child(_visit_label)
	_cards_box = VBoxContainer.new()
	_cards_box.size_flags_vertical = Control.SIZE_EXPAND_FILL
	_cards_box.alignment = BoxContainer.ALIGNMENT_CENTER   # 卡片区垂直居中
	_cards_box.add_theme_constant_override("separation", 8)
	box.add_child(_cards_box)
	var foot := HBoxContainer.new()
	foot.alignment = BoxContainer.ALIGNMENT_CENTER
	foot.add_theme_constant_override("separation", 16)
	box.add_child(foot)
	var leave_btn := UiKit.button("离开商店")
	leave_btn.pressed.connect(_emit_leave_pressed)
	foot.add_child(leave_btn)
	_foot_hint = UiKit.label("货架与奖励三选一同一池 · 池空即空架关店",UiKit.FS_HINT, false, UiKit.WARM_FAINT)
	foot.add_child(_foot_hint)
	visible = false


# 爬价规则行投喂（demo .svisit——buys<0 = legacy 面隐藏行；mult=pow(price_a, buys) 由 presenter 算）
func set_visit_info(buys: int, price_a: float) -> void:
	if buys < 0:
		_visit_label.text = ""
		return
	var mult := pow(price_a, float(buys))
	_visit_label.text = "本次进店已购 %d 件 · 现价 %s　｜　买 1 件 → 三件全换新 · 全场涨价 ×%s" % [
		buys, _xnum(mult), _xnum(price_a)]


func _xnum(v: float) -> String:
	return "×%d" % int(round(v)) if absf(v - roundf(v)) < 0.005 else "×%.2f" % v


# 打开商店（products = runner.shop_products() 投影——[{product_id, display_name, attr, flat_value, price, purchased}]）
func open_shop(products: Array, gp: int) -> void:
	for child in _cards_box.get_children():
		child.queue_free()
	_card_rows.clear()
	for p in products:
		_card_rows.append(_build_card(p))
	refresh_state(products, gp)
	visible = true


# 状态重刷（购买/钱包变化后调用——就地改文案与按钮禁用态，零重建）
func refresh_state(products: Array, gp: int) -> void:
	_gp_label.text = "GP %d" % gp
	var by_id := {}
	for p in products:
		by_id[String(p.product_id)] = p
	for card in _card_rows:
		var p: Dictionary[Variant, Variant] = by_id.get(String(card.product_id), {})
		if p.is_empty():
			continue
		card.price.text = "现价 %d GP" % int(p.price)
		card.bought.text = "已购 %d 档" % int(p.purchased)
		card.btn.disabled = gp < int(p.price)   # 余额不足禁用置灰


# 商品卡（显示名 + 档位文案 | 现价 | 已购档数 | 购买按钮）
func _build_card(p: Dictionary) -> Dictionary:
	var card := PanelContainer.new()
	card.add_theme_stylebox_override("panel", UiKit.panel_flat(UiKit.BG_OVERLAY, UiKit.GOLD_DIM,UiKit.RADIUS_OBJECT, 1, Vector4(12, 6, 12, 6)))
	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 14)
	card.add_child(row)
	var name_l := UiKit.label(_card_title(p),UiKit.FS_BODY, true, UiKit.WARM_SOFT)   # 显式传墨：bold 缺省 INK_LABEL 压暗底行卡 1.12:1 越带，换暖白次级 9.53:1
	name_l.custom_minimum_size = Vector2(190, 0)
	row.add_child(name_l)
	var price_l := UiKit.label("",UiKit.FS_HINT, false, UiKit.WARM_SOFT)
	price_l.custom_minimum_size = Vector2(110, 0)
	row.add_child(price_l)
	var bought_l := UiKit.label("",UiKit.FS_HINT, false, UiKit.WARM_FAINT)
	row.add_child(bought_l)
	var btn := UiKit.button("购买", 0.0)   # 行卡紧凑钮豁免宽度基准
	btn.pressed.connect(_emit_buy_requested.bind(p))
	row.add_child(btn)
	_cards_box.add_child(card)
	return {"product_id": String(p.product_id), "price": price_l, "bought": bought_l, "btn": btn}


# 卡题 = 显示名 + 档位文案（attr →「攻击 +1」形）
func _card_title(p: Dictionary) -> String:
	var attr := String(p.get("attr", ""))
	return "%s（%s %+d）" % [String(p.get("display_name", "")), String(ATTR_LABELS.get(attr, attr)), int(p.get("flat_value", 0))]


func _emit_leave_pressed() -> void:
	leave_pressed.emit()


func _emit_buy_requested(p: Dictionary) -> void:
	buy_requested.emit(String(p.product_id))


# ---- 共享池货架面（M-4 迭代 11 第②批 T4——P3 甲程序占位，三选一同构卡；UiKit 既有件）----

# 打开/重刷货架（cards = runner.shop_shelf() 投影——[{kind_id, display_name, value, price, stock_left}]）。
# 买后组合根重投喂新货架 = 整架重建呈现（三件全重抽反馈——未买不保留）；空架 = 池空硬闸合法态。
func open_shelf(cards: Array, gp: int) -> void:
	for child in _cards_box.get_children():
		child.queue_free()
	_shelf_rows.clear()
	var row := HBoxContainer.new()
	row.alignment = BoxContainer.ALIGNMENT_CENTER
	row.add_theme_constant_override("separation", 26)   # demo .cards gap 26（T6 对齐）
	_cards_box.add_child(row)
	for c in cards:
		_shelf_rows.append(_build_shelf_card(row, c))
	if cards.is_empty():
		var empty := UiKit.label("货架售罄——共享池已买空（属性件全冒险共 3+3+3 份 / AP 件 2 份）",UiKit.FS_HINT, false, UiKit.WARM_FAINT)
		empty.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
		row.add_child(empty)
	refresh_shelf_state(gp)
	visible = true


# 货架余额重刷（就地改禁用态——买后重建路径经 open_shelf 覆盖，本口供 wallet 变化联动）
func refresh_shelf_state(gp: int) -> void:
	_gp_label.text = "GP %d" % gp
	for card in _shelf_rows:
		card.btn.disabled = gp < int(card.price)
		card.card.modulate = Color(1, 1, 1, 1) if gp >= int(card.price) else Color(1, 1, 1, 0.55)
		if _refresh_btn != null and not _refresh_btn.disabled:
			_refresh_btn.disabled = gp < _refresh_gp_cost


# MC-1 刷新呈现投喂（free_left=天赋位免费剩余[基础 0]/gp_cost=本次 GP 刷新价/can_afford=余额可付）
var _refresh_gp_cost := 0


func set_refresh_display(free_left: int, gp_cost: int, can_afford: bool) -> void:
	_refresh_gp_cost = gp_cost
	for lab in _refresh_btn.get_children():
		if lab is Label:
			(lab as Label).text = str(free_left)
	_refresh_btn.tooltip_text = "刷新货架——换一批商品\n免费 %d 次（天赋增益位，基础 0）\nGP 刷新 %d GP（provisional）\n池源=共享池，与奖励三选一同源" % [free_left, gp_cost]
	_refresh_btn.disabled = not can_afford and free_left <= 0


# 货架卡（bcard 竖卡：类型色带+图标+名+件值描述+价签+购买钮——M6 同构卡；demo ⑤）
# 库存余量不再呈现（关卡节点地图 v1.5-a）——数据层 stock_left 仍投喂断点
func _build_shelf_card(holder: Control, c: Dictionary) -> Dictionary:
	var kind := String(c.get("kind_id", ""))
	var icon_key := UiKit.TEX_ICON_SWORD
	var kl := kind.to_lower()
	if kl.contains("hp") or kl.contains("heal"):
		icon_key = UiKit.TEX_ICON_HEART
	elif kl.contains("armor") or kl.contains("shield"):
		icon_key = UiKit.TEX_ICON_SHIELD
	elif kl.contains("ap") or kl.contains("action") or kl.contains("pouch"):
		icon_key = UiKit.TEX_ICON_POUCH
	var body := ""
	if kind == "feat_ticket":
		body = "开一次专长三选一"
	else:
		body = "%s %+d（本冒险）" % [String(KIND_LABELS.get(kind, kind)), int(c.get("value", 0))]
	var card := UiKit.bcard(String(c.get("display_name", kind)), body,
		UiKit.tg_band(kl), icon_key,   # 类型色带单点（N4c/Q4 甲——货架与三选一同源判定，原固定默认带）
		"%d ◈" % int(c.get("price", 0)), String(KIND_LABELS.get(kind, kind)))
	var btn := UiKit.button("购买")
	btn.pressed.connect(_emit_shelf_buy.bind(kind))
	card.add_footer(btn)
	holder.add_child(card)
	return {"kind_id": kind, "price": int(c.get("price", 0)), "btn": btn, "card": card}


func _emit_shelf_buy(kind: String) -> void:
	buy_requested.emit(kind)


func _emit_refresh_requested() -> void:
	refresh_requested.emit()