class_name ABGAssetChrome
extends RefCounted

## Shared asset nine-patch chrome for first-play pages.
##
## Large parchment/wood surfaces use the approved generated UI components with
## their decorative borders isolated as nine-patch corners. Small controls use
## the size-independent shared vector material (`market_chrome.gd`) so they
## never stretch ornament pixels. Text and values stay engine-rendered.

const MarketChrome = preload("res://ui/shared/market_chrome.gd")
const PAPER_PANEL = preload("res://assets/ui_m52_components/v2_trimmed/chrome/parchment_panel.png")
const ACTION_PLATE = preload("res://assets/ui_m52_components/v2_trimmed/chrome/action_button.png")
const NAME_PLATE = preload("res://assets/ui_m52_components/v2_trimmed/frames/name_plate.png")
const TITLE_PLAQUE = preload("res://assets/ui_m52_market/v2/title_plaque.png")
const WOOD_PLATE = preload("res://assets/ui_m52_market/v2/wood_button.png")

const INK := Color("#2f2417")
const INK_SOFT := Color("#5e4a32")
const IVORY := Color("#f6ecd4")

static var _scaled_cache := {}


## Release the downscaled textures held by the static cache. Pages must call
## this when they leave the tree so a strict run does not report leaked RIDs.
static func clear_cache() -> void:
	_scaled_cache.clear()


## Plain parchment panel. Defaults keep the wood frame in the corners for a
## medium-sized region; callers scale down and adjust margins per region.
static func paper(node_name: String, area: Rect2, scale := 0.55, h_margin := 85.0, v_margin := 75.0) -> NinePatchRect:
	return plate(node_name, area, PAPER_PANEL, scale, h_margin, v_margin)


## Wide wood rail (top rail, bottom rail). `name_plate` has a thin frame and a
## plain parchment center, so it stretches cleanly across a full canvas width.
static func rail(node_name: String, area: Rect2, scale := 0.5, h_margin := 105.0, v_margin := 45.0) -> NinePatchRect:
	return plate(node_name, area, NAME_PLATE, scale, h_margin, v_margin)


static func plate(node_name: String, area: Rect2, source: Texture2D, scale: float, h_margin: float, v_margin: float) -> NinePatchRect:
	var node := NinePatchRect.new()
	node.name = node_name
	node.texture = scaled(source, scale)
	node.patch_margin_left = maxi(2, int(round(h_margin * scale)))
	node.patch_margin_right = maxi(2, int(round(h_margin * scale)))
	node.patch_margin_top = maxi(2, int(round(v_margin * scale)))
	node.patch_margin_bottom = maxi(2, int(round(v_margin * scale)))
	node.axis_stretch_horizontal = NinePatchRect.AXIS_STRETCH_MODE_STRETCH
	node.axis_stretch_vertical = NinePatchRect.AXIS_STRETCH_MODE_STRETCH
	node.draw_center = true
	node.texture_filter = CanvasItem.TEXTURE_FILTER_LINEAR_WITH_MIPMAPS
	node.mouse_filter = Control.MOUSE_FILTER_IGNORE
	place(node, area)
	return node


## Size-independent shared vector material for small controls (name plates,
## command plates). `variant` is a `market_chrome.gd` variant name.
static func market(node_name: String, area: Rect2, variant: String, accent := "blue") -> Control:
	var node = MarketChrome.new().configure(variant, accent)
	node.name = node_name
	node.resized.connect(node.queue_redraw)
	place(node, area)
	return node


static func scaled(source: Texture2D, scale: float) -> Texture2D:
	if is_equal_approx(scale, 1.0):
		return source
	var key := "%s@%.3f" % [source.resource_path, scale]
	var cached: Texture2D = _scaled_cache.get(key)
	if cached != null:
		return cached
	var image := source.get_image()
	image.resize(
		maxi(2, int(round(float(image.get_width()) * scale))),
		maxi(2, int(round(float(image.get_height()) * scale))),
		Image.INTERPOLATE_LANCZOS
	)
	var texture := ImageTexture.create_from_image(image)
	_scaled_cache[key] = texture
	return texture


static func place(control: Control, area: Rect2) -> void:
	control.anchor_left = area.position.x
	control.anchor_top = area.position.y
	control.anchor_right = area.end.x
	control.anchor_bottom = area.end.y
	control.offset_left = 0.0
	control.offset_top = 0.0
	control.offset_right = 0.0
	control.offset_bottom = 0.0


## Typography: one base family with explicit tracking and weight so titles,
## values and captions read as different ranks instead of one flat label size.
static func styled_font(tracking := 0.0, embolden := 0.0) -> FontVariation:
	var variation := FontVariation.new()
	variation.base_font = preload("res://assets/fonts/NotoSansSC.ttf")
	variation.spacing_glyph = int(round(tracking))
	variation.variation_embolden = embolden
	return variation


static func styled_label(value: String, actual_size: int, color := INK, tracking := 0.0, embolden := 0.0) -> Label:
	var label := Label.new()
	label.text = value
	label.add_theme_font_override("font", styled_font(tracking, embolden))
	label.add_theme_font_size_override("font_size", actual_size)
	label.add_theme_color_override("font_color", color)
	label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	label.mouse_filter = Control.MOUSE_FILTER_IGNORE
	return label


static func ink_label(value: String, color := INK, design_size := 14.0) -> Label:
	var label := Label.new()
	label.text = value
	label.add_theme_font_override("font", preload("res://assets/fonts/NotoSansSC.ttf"))
	label.add_theme_font_size_override("font_size", int(design_size))
	label.add_theme_color_override("font_color", color)
	label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	label.mouse_filter = Control.MOUSE_FILTER_IGNORE
	return label