class_name MallItemCard
extends Button

# ============================================================================
# MallItemCard.gd - 商城商品卡片
# ============================================================================
# 展示商品槽位、状态、价格和选中态，由 MallPanel 统一驱动。
# ============================================================================

signal item_selected(item: Dictionary)

const TEXT_COLOR: Color = Color(0.111, 0.231, 0.380)
const MUTED_COLOR: Color = Color(0.486, 0.584, 0.694)
const ACCENT_COLOR: Color = Color(0.086, 0.608, 0.922)
const LOCKED_COLOR: Color = Color(0.455, 0.510, 0.584)
const COIN_TEXTURE: Texture2D = preload("res://assets/ui/mall/branding/branding_whale_coin.png")
const CATALOG_SCRIPT: Script = preload("res://Config/MallCatalog.gd")

var itemData: Dictionary = {}
var isSelected: bool = false

var _background: PanelContainer
var _icon: TextureRect
var _nameLabel: Label
var _statusLabel: Label
var _priceLabel: Label
var _lockedOverlay: ColorRect

func _ready() -> void:
	focus_mode = Control.FOCUS_NONE
	mouse_default_cursor_shape = Control.CURSOR_POINTING_HAND
	custom_minimum_size = Vector2(218, 288)
	add_theme_stylebox_override("normal", StyleBoxEmpty.new())
	add_theme_stylebox_override("hover", StyleBoxEmpty.new())
	add_theme_stylebox_override("pressed", StyleBoxEmpty.new())
	add_theme_stylebox_override("focus", StyleBoxEmpty.new())
	_build_ui()
	pressed.connect(_on_pressed)

func setup(data: Dictionary, selected: bool) -> void:
	itemData = data.duplicate(true)
	isSelected = selected
	if not is_inside_tree():
		return
	_render()

func set_selected(selected: bool) -> void:
	isSelected = selected
	if is_inside_tree():
		_render()

func _build_ui() -> void:
	_background = PanelContainer.new()
	_background.name = "background"
	_background.set_anchors_preset(Control.PRESET_FULL_RECT)
	_background.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(_background)

	var margin := MarginContainer.new()
	margin.name = "contentMargin"
	margin.set_anchors_preset(Control.PRESET_FULL_RECT)
	margin.add_theme_constant_override("margin_left", 14)
	margin.add_theme_constant_override("margin_top", 14)
	margin.add_theme_constant_override("margin_right", 14)
	margin.add_theme_constant_override("margin_bottom", 14)
	margin.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(margin)

	var content := VBoxContainer.new()
	content.alignment = BoxContainer.ALIGNMENT_CENTER
	content.add_theme_constant_override("separation", 7)
	content.mouse_filter = Control.MOUSE_FILTER_IGNORE
	margin.add_child(content)

	_statusLabel = Label.new()
	_statusLabel.custom_minimum_size = Vector2(0, 24)
	_statusLabel.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
	_statusLabel.add_theme_font_size_override("font_size", 15)
	_statusLabel.add_theme_color_override("font_color", MUTED_COLOR)
	content.add_child(_statusLabel)

	_icon = TextureRect.new()
	_icon.texture_filter = CanvasItem.TEXTURE_FILTER_LINEAR
	_icon.custom_minimum_size = Vector2(152, 134)
	_icon.expand_mode = TextureRect.EXPAND_FIT_WIDTH_PROPORTIONAL
	_icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	_icon.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(_icon)

	_nameLabel = Label.new()
	_nameLabel.custom_minimum_size = Vector2(0, 48)
	_nameLabel.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	_nameLabel.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	_nameLabel.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	_nameLabel.add_theme_font_size_override("font_size", 19)
	_nameLabel.add_theme_color_override("font_color", TEXT_COLOR)
	content.add_child(_nameLabel)

	var priceRow := HBoxContainer.new()
	priceRow.alignment = BoxContainer.ALIGNMENT_CENTER
	priceRow.add_theme_constant_override("separation", 4)
	priceRow.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(priceRow)

	var coin := TextureRect.new()
	coin.texture = COIN_TEXTURE
	coin.texture_filter = CanvasItem.TEXTURE_FILTER_LINEAR
	coin.custom_minimum_size = Vector2(28, 28)
	coin.expand_mode = TextureRect.EXPAND_FIT_WIDTH_PROPORTIONAL
	coin.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	coin.mouse_filter = Control.MOUSE_FILTER_IGNORE
	priceRow.add_child(coin)

	_priceLabel = Label.new()
	_priceLabel.add_theme_font_size_override("font_size", 18)
	_priceLabel.add_theme_color_override("font_color", MUTED_COLOR)
	priceRow.add_child(_priceLabel)

	_lockedOverlay = ColorRect.new()
	_lockedOverlay.name = "lockedOverlay"
	_lockedOverlay.set_anchors_preset(Control.PRESET_FULL_RECT)
	_lockedOverlay.color = Color(0.350, 0.420, 0.510, 0.18)
	_lockedOverlay.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(_lockedOverlay)

	_render()

func _render() -> void:
	_background.add_theme_stylebox_override("panel", _create_card_style(isSelected))
	var status := str(itemData.get("status", CATALOG_SCRIPT.STATUS_COMING_SOON))
	var iconPath := str(itemData.get("icon", ""))
	_icon.texture = _load_texture(iconPath)
	_nameLabel.text = str(itemData.get("name", "商品槽位"))
	_statusLabel.text = CATALOG_SCRIPT.get_status_label(status)
	_priceLabel.text = _format_price(itemData)
	_lockedOverlay.visible = status == CATALOG_SCRIPT.STATUS_COMING_SOON or status == CATALOG_SCRIPT.STATUS_LOCKED
	_statusLabel.add_theme_color_override("font_color", ACCENT_COLOR if status == CATALOG_SCRIPT.STATUS_AVAILABLE else LOCKED_COLOR)

func _create_card_style(selected: bool) -> StyleBoxFlat:
	var style := StyleBoxFlat.new()
	style.bg_color = Color(0.982, 0.995, 1.0, 1.0)
	style.corner_radius_top_left = 18
	style.corner_radius_top_right = 18
	style.corner_radius_bottom_left = 18
	style.corner_radius_bottom_right = 18
	style.border_width_left = 2 if not selected else 4
	style.border_width_top = 2 if not selected else 4
	style.border_width_right = 2 if not selected else 4
	style.border_width_bottom = 2 if not selected else 4
	style.border_color = Color(0.658, 0.835, 0.965, 0.86) if not selected else Color(0.086, 0.690, 0.960, 1.0)
	style.shadow_color = Color(0.086, 0.314, 0.520, 0.15 if selected else 0.08)
	style.shadow_size = 14 if selected else 8
	style.shadow_offset = Vector2(0, 4)
	return style

func _format_price(data: Dictionary) -> String:
	var status := str(data.get("status", ""))
	if status == CATALOG_SCRIPT.STATUS_OWNED:
		return "已购买"
	if status == CATALOG_SCRIPT.STATUS_COMING_SOON or status == CATALOG_SCRIPT.STATUS_LOCKED:
		return "暂未开放"
	return str(int(data.get("price", 0)))

func _load_texture(path: String) -> Texture2D:
	if path.is_empty():
		return null
	if FileAccess.file_exists("%s.import" % path):
		var texture := load(path) as Texture2D
		if texture != null:
			return texture
	var image := Image.load_from_file(ProjectSettings.globalize_path(path))
	if image == null or image.is_empty():
		return null
	return ImageTexture.create_from_image(image)

func _on_pressed() -> void:
	item_selected.emit(itemData)