extends VBoxContainer

const Brand := preload("res://scripts/ui/medmind_style.gd")
const ICON_BY_SKU := {
	"exam_token_1": "clock-3",
	"qbank_reset_1": "rotate-ccw",
}
const FEATURES_BY_SKU := {
	"exam_token_1": ["Full 6-block exam", "Timed & scored", "Performance analytics"],
	"qbank_reset_1": ["Reset eligibility", "Keep your stats", "Smart spaced retention"],
}
const POPULAR_SKUS := ["exam_token_1"]
const TAB_DEFS := [
	{"label": "Featured", "icon": "star", "active": true},
	{"label": "Tokens", "icon": "clipboard-list", "active": false},
	{"label": "Boosts", "icon": "activity", "active": false},
	{"label": "Content", "icon": "book-open", "active": false},
	{"label": "Customization", "icon": "settings", "active": false},
	{"label": "Bundles", "icon": "clipboard-plus", "active": false},
]

var main: Control
var subtitle_label: Label
var summary_card: PanelContainer
var summary_icon_panel: PanelContainer
var summary_icon: TextureRect
var balance_value_label: Label
var coin_caption_label: Label
var inventory_label: Label
var tab_controls: Array = []
var banner_card: PanelContainer
var banner_icon_panel: PanelContainer
var banner_heading: Label
var banner_description: Label
var section_heading: Label
var section_subtitle: Label
var products_grid: HFlowContainer
var status_label: Label
var confirm_dialog: ConfirmationDialog
var footer_card: PanelContainer
var footer_icon_panel: PanelContainer
var footer_icon: TextureRect
var footer_heading: Label
var footer_description: Label
var pending_sku := ""


func _ready() -> void:
	size_flags_horizontal = Control.SIZE_EXPAND_FILL
	size_flags_vertical = Control.SIZE_EXPAND_FILL
	add_theme_constant_override("separation", 18)

	_build_header()
	_build_summary_card()
	_build_tabs()
	_build_slot_machine_banner()

	section_heading = Label.new()
	section_heading.text = "Featured"
	section_heading.add_theme_font_override("font", Brand.font)
	section_heading.add_theme_font_size_override("font_size", 18)
	add_child(section_heading)
	section_subtitle = Label.new()
	section_subtitle.text = "Hand-picked items to supercharge your Step 3 prep."
	section_subtitle.add_theme_font_override("font", Brand.font)
	section_subtitle.add_theme_font_size_override("font_size", 12)
	section_subtitle.add_theme_color_override("font_color", Brand.muted_color(UIThemeService.is_dark_mode()))
	add_child(section_subtitle)

	products_grid = HFlowContainer.new()
	products_grid.add_theme_constant_override("h_separation", 14)
	products_grid.add_theme_constant_override("v_separation", 14)
	add_child(products_grid)

	status_label = Label.new()
	status_label.add_theme_font_override("font", Brand.font)
	status_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	add_child(status_label)

	confirm_dialog = ConfirmationDialog.new()
	confirm_dialog.confirmed.connect(_confirm_purchase)
	add_child(confirm_dialog)

	_build_footer()

	CreditsService.credits_changed.connect(_refresh)
	CreditsService.credits_failed.connect(_show_error)
	CreditsService.store_operation_completed.connect(_show_message)
	UIThemeService.theme_changed.connect(func(_dark: bool): _refresh_theme_controls(); _refresh())
	_refresh()


func on_show(_payload: Variant = null) -> void:
	CreditsService.refresh()
	_refresh()


func _build_header() -> void:
	var title := Label.new()
	title.text = "RZ Coin Shop"
	title.add_theme_font_override("font", Brand.font)
	title.add_theme_font_size_override("font_size", 30)
	add_child(title)
	subtitle_label = Label.new()
	subtitle_label.text = "Spend your RZ Coins on premium content and boosts."
	subtitle_label.add_theme_font_override("font", Brand.font)
	subtitle_label.add_theme_font_size_override("font_size", 14)
	subtitle_label.add_theme_color_override("font_color", Brand.muted_color(UIThemeService.is_dark_mode()))
	add_child(subtitle_label)


func _build_summary_card() -> void:
	var dark := UIThemeService.is_dark_mode()
	summary_card = PanelContainer.new()
	summary_card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, true, Brand.AMBER))
	summary_card.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	add_child(summary_card)

	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 16)
	margin.add_theme_constant_override("margin_right", 16)
	margin.add_theme_constant_override("margin_top", 12)
	margin.add_theme_constant_override("margin_bottom", 12)
	summary_card.add_child(margin)

	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 14)
	margin.add_child(row)

	summary_icon_panel = PanelContainer.new()
	summary_icon_panel.custom_minimum_size = Vector2(40, 40)
	summary_icon_panel.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	summary_icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, Brand.AMBER, 20))
	summary_icon = TextureRect.new()
	summary_icon.texture = load("res://assets/icons/lucide/star.svg")
	summary_icon.custom_minimum_size = Vector2(22, 22)
	summary_icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	summary_icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	summary_icon.modulate = Brand.AMBER
	summary_icon_panel.add_child(summary_icon)
	row.add_child(summary_icon_panel)

	var copy := VBoxContainer.new()
	copy.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	copy.add_theme_constant_override("separation", 0)
	balance_value_label = Label.new()
	balance_value_label.add_theme_font_override("font", Brand.font)
	balance_value_label.add_theme_font_size_override("font_size", 22)
	balance_value_label.add_theme_color_override("font_color", Brand.text_color(dark))
	copy.add_child(balance_value_label)
	coin_caption_label = Label.new()
	coin_caption_label.text = "RZ Coins"
	coin_caption_label.add_theme_font_override("font", Brand.font)
	coin_caption_label.add_theme_font_size_override("font_size", 12)
	coin_caption_label.add_theme_color_override("font_color", Brand.muted_color(dark))
	copy.add_child(coin_caption_label)
	inventory_label = Label.new()
	inventory_label.add_theme_font_override("font", Brand.font)
	inventory_label.add_theme_font_size_override("font_size", 12)
	inventory_label.add_theme_color_override("font_color", Brand.muted_color(dark))
	copy.add_child(inventory_label)
	row.add_child(copy)


func _build_tabs() -> void:
	var dark := UIThemeService.is_dark_mode()
	tab_controls.clear()

	var tabs_row := HFlowContainer.new()
	tabs_row.add_theme_constant_override("h_separation", 20)
	tabs_row.add_theme_constant_override("v_separation", 8)
	add_child(tabs_row)

	for tab_def_variant in TAB_DEFS:
		var tab_def: Dictionary = tab_def_variant
		var tab := VBoxContainer.new()
		tab.add_theme_constant_override("separation", 6)
		tabs_row.add_child(tab)

		var content := HBoxContainer.new()
		content.add_theme_constant_override("separation", 6)
		tab.add_child(content)

		var icon := TextureRect.new()
		icon.texture = load("res://assets/icons/lucide/%s.svg" % str(tab_def.get("icon", "star")))
		icon.custom_minimum_size = Vector2(16, 16)
		icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
		icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
		content.add_child(icon)

		var label := Label.new()
		label.text = str(tab_def.get("label", ""))
		label.add_theme_font_override("font", Brand.font)
		label.add_theme_font_size_override("font_size", 14)
		content.add_child(label)

		var underline := ColorRect.new()
		underline.custom_minimum_size = Vector2(0, 2)
		tab.add_child(underline)

		var active := bool(tab_def.get("active", false))
		tab_controls.append({"icon": icon, "label": label, "underline": underline, "active": active})

	var divider := ColorRect.new()
	divider.custom_minimum_size = Vector2(0, 1)
	add_child(divider)
	tab_controls.append({"divider": divider})

	_apply_tab_theme(dark)


func _apply_tab_theme(dark: bool) -> void:
	for entry_variant in tab_controls:
		var entry: Dictionary = entry_variant
		if entry.has("divider"):
			(entry["divider"] as ColorRect).color = Color("2a365a") if dark else Brand.LIGHT_BORDER
			continue
		var active := bool(entry["active"])
		var color := Brand.ROYAL_BLUE if active else Brand.muted_color(dark)
		(entry["icon"] as TextureRect).modulate = color
		(entry["label"] as Label).add_theme_color_override("font_color", color)
		(entry["underline"] as ColorRect).color = Brand.ROYAL_BLUE if active else Color(0, 0, 0, 0)


func _build_slot_machine_banner() -> void:
	var dark := UIThemeService.is_dark_mode()
	banner_card = PanelContainer.new()
	banner_card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, true, Brand.ROYAL_BLUE))
	add_child(banner_card)

	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 16)
	margin.add_theme_constant_override("margin_right", 16)
	margin.add_theme_constant_override("margin_top", 12)
	margin.add_theme_constant_override("margin_bottom", 12)
	banner_card.add_child(margin)

	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 14)
	margin.add_child(row)

	banner_icon_panel = PanelContainer.new()
	banner_icon_panel.custom_minimum_size = Vector2(40, 40)
	banner_icon_panel.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	banner_icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, Brand.ROYAL_BLUE, 20))
	var icon := TextureRect.new()
	icon.texture = load("res://assets/icons/lucide/star.svg")
	icon.custom_minimum_size = Vector2(20, 20)
	icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	icon.modulate = Brand.ROYAL_BLUE
	banner_icon_panel.add_child(icon)
	row.add_child(banner_icon_panel)

	var copy := VBoxContainer.new()
	copy.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	copy.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	copy.add_theme_constant_override("separation", 2)
	banner_heading = Label.new()
	banner_heading.text = "RZ Coin Slot Machine"
	banner_heading.add_theme_font_override("font", Brand.font)
	banner_heading.add_theme_font_size_override("font_size", 15)
	banner_heading.add_theme_color_override("font_color", Brand.text_color(dark))
	copy.add_child(banner_heading)
	banner_description = Label.new()
	banner_description.text = "Spend RZ Coins for a chance at bigger rewards."
	banner_description.add_theme_font_override("font", Brand.font)
	banner_description.add_theme_font_size_override("font_size", 12)
	banner_description.add_theme_color_override("font_color", Brand.muted_color(dark))
	copy.add_child(banner_description)
	row.add_child(copy)

	var play_button := Button.new()
	play_button.text = "Play Now"
	play_button.custom_minimum_size = Vector2(96, 36)
	play_button.add_theme_font_override("font", Brand.font)
	_style_buy_button(play_button)
	play_button.pressed.connect(func(): main.show_screen("slot_machine"))
	row.add_child(play_button)


func _build_footer() -> void:
	var dark := UIThemeService.is_dark_mode()
	footer_card = PanelContainer.new()
	footer_card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, false))
	add_child(footer_card)

	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 16)
	margin.add_theme_constant_override("margin_right", 16)
	margin.add_theme_constant_override("margin_top", 12)
	margin.add_theme_constant_override("margin_bottom", 12)
	footer_card.add_child(margin)

	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 14)
	margin.add_child(row)

	footer_icon_panel = PanelContainer.new()
	footer_icon_panel.custom_minimum_size = Vector2(36, 36)
	footer_icon_panel.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	footer_icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, Brand.ROYAL_BLUE, 18))
	footer_icon = TextureRect.new()
	footer_icon.texture = load("res://assets/icons/lucide/activity.svg")
	footer_icon.custom_minimum_size = Vector2(18, 18)
	footer_icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	footer_icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	footer_icon.modulate = Brand.ROYAL_BLUE
	footer_icon_panel.add_child(footer_icon)
	row.add_child(footer_icon_panel)

	var copy := VBoxContainer.new()
	copy.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	copy.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	copy.add_theme_constant_override("separation", 2)
	footer_heading = Label.new()
	footer_heading.text = "How to earn RZ Coins"
	footer_heading.add_theme_font_override("font", Brand.font)
	footer_heading.add_theme_font_size_override("font_size", 15)
	footer_heading.add_theme_color_override("font_color", Brand.text_color(dark))
	copy.add_child(footer_heading)
	footer_description = Label.new()
	footer_description.text = "Answer questions correctly on the first try, within the time limit."
	footer_description.add_theme_font_override("font", Brand.font)
	footer_description.add_theme_font_size_override("font_size", 12)
	footer_description.add_theme_color_override("font_color", Brand.muted_color(dark))
	footer_description.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	copy.add_child(footer_description)
	row.add_child(copy)


func _refresh_theme_controls() -> void:
	var dark := UIThemeService.is_dark_mode()
	subtitle_label.add_theme_color_override("font_color", Brand.muted_color(dark))
	summary_card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, true, Brand.AMBER))
	summary_icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, Brand.AMBER, 20))
	balance_value_label.add_theme_color_override("font_color", Brand.text_color(dark))
	coin_caption_label.add_theme_color_override("font_color", Brand.muted_color(dark))
	inventory_label.add_theme_color_override("font_color", Brand.muted_color(dark))
	_apply_tab_theme(dark)
	banner_card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, true, Brand.ROYAL_BLUE))
	banner_icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, Brand.ROYAL_BLUE, 20))
	banner_heading.add_theme_color_override("font_color", Brand.text_color(dark))
	banner_description.add_theme_color_override("font_color", Brand.muted_color(dark))
	section_subtitle.add_theme_color_override("font_color", Brand.muted_color(dark))
	footer_card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, false))
	footer_icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, Brand.ROYAL_BLUE, 18))
	footer_heading.add_theme_color_override("font_color", Brand.text_color(dark))
	footer_description.add_theme_color_override("font_color", Brand.muted_color(dark))


func _refresh() -> void:
	var dark := UIThemeService.is_dark_mode()
	balance_value_label.text = _format_thousands(CreditsService.credits)
	inventory_label.text = "%d exam token(s) · %d QBank reset token(s)" % [
		CreditsService.exam_tokens, CreditsService.qbank_reset_tokens]
	for child in products_grid.get_children():
		child.queue_free()
	for product_variant in CreditsService.products:
		if typeof(product_variant) != TYPE_DICTIONARY:
			continue
		var product: Dictionary = product_variant
		var sku := str(product.get("sku", ""))
		var price := int(product.get("coinPrice", 0))
		products_grid.add_child(_build_item_card(
			dark,
			ICON_BY_SKU.get(sku, "star"),
			Brand.ROYAL_BLUE,
			str(product.get("name", "Store item")),
			str(product.get("description", "")),
			FEATURES_BY_SKU.get(sku, []),
			POPULAR_SKUS.has(sku),
			price,
			"Buy",
			CreditsService.credits < price,
			_ask_purchase.bind(sku, str(product.get("name", "item")), price)))
	if CreditsService.qbank_reset_tokens > 0:
		products_grid.add_child(_build_item_card(
			dark,
			"rotate-ccw",
			Brand.SUCCESS,
			"Use QBank Reset Token",
			"Question eligibility resets; ELO, history, bookmarks, notes, reviews, and earning limits are preserved.",
			FEATURES_BY_SKU.get("qbank_reset_1", []),
			false,
			-1,
			"Use token",
			false,
			_ask_reset))


func _build_item_card(
	dark: bool,
	icon_name: String,
	accent: Color,
	title: String,
	description_text: String,
	features: Array,
	popular: bool,
	price: int,
	button_text: String,
	button_disabled: bool,
	on_press: Callable
) -> PanelContainer:
	var card := _new_card(dark)
	var content: VBoxContainer = card.get_child(0).get_child(0)

	var top_row := HBoxContainer.new()
	content.add_child(top_row)
	top_row.add_child(_card_icon(dark, icon_name, accent))
	var badge_spacer := Control.new()
	badge_spacer.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	top_row.add_child(badge_spacer)
	if popular:
		top_row.add_child(_popular_badge())

	var name_label := Label.new()
	name_label.text = title
	name_label.add_theme_font_override("font", Brand.font)
	name_label.add_theme_font_size_override("font_size", 16)
	name_label.add_theme_color_override("font_color", Brand.text_color(dark))
	content.add_child(name_label)

	var description := Label.new()
	description.text = description_text
	description.add_theme_font_override("font", Brand.font)
	description.add_theme_font_size_override("font_size", 12)
	description.add_theme_color_override("font_color", Brand.muted_color(dark))
	description.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	description.custom_minimum_size = Vector2(190, 0)
	content.add_child(description)

	if not features.is_empty():
		var bullets := VBoxContainer.new()
		bullets.add_theme_constant_override("separation", 4)
		content.add_child(bullets)
		for feature_text in features:
			bullets.add_child(_feature_row(dark, accent, str(feature_text)))

	var divider := ColorRect.new()
	divider.custom_minimum_size = Vector2(0, 1)
	divider.color = Color("2a365a") if dark else Brand.LIGHT_BORDER
	content.add_child(divider)

	var footer_row := HBoxContainer.new()
	footer_row.add_theme_constant_override("separation", 8)
	content.add_child(footer_row)
	if price >= 0:
		footer_row.add_child(_price_tag(dark, price))
	var spacer := Control.new()
	spacer.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	footer_row.add_child(spacer)
	var button := Button.new()
	button.text = button_text
	button.custom_minimum_size = Vector2(64, 34)
	button.add_theme_font_override("font", Brand.font)
	_style_buy_button(button)
	button.disabled = button_disabled
	button.pressed.connect(on_press)
	footer_row.add_child(button)

	return card


func _new_card(dark: bool) -> PanelContainer:
	var card := PanelContainer.new()
	card.custom_minimum_size = Vector2(230, 0)
	card.add_theme_stylebox_override("panel", Brand.content_card_box(dark, true, Brand.ROYAL_BLUE))
	var margin := MarginContainer.new()
	margin.add_theme_constant_override("margin_left", 16)
	margin.add_theme_constant_override("margin_right", 16)
	margin.add_theme_constant_override("margin_top", 14)
	margin.add_theme_constant_override("margin_bottom", 14)
	card.add_child(margin)
	var content := VBoxContainer.new()
	content.add_theme_constant_override("separation", 8)
	margin.add_child(content)
	return card


func _card_icon(dark: bool, icon_name: String, accent: Color) -> PanelContainer:
	var icon_panel := PanelContainer.new()
	icon_panel.custom_minimum_size = Vector2(48, 48)
	icon_panel.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	icon_panel.add_theme_stylebox_override("panel", Brand.icon_circle_box(dark, accent, 24))
	var icon := TextureRect.new()
	icon.texture = load("res://assets/icons/lucide/%s.svg" % icon_name)
	icon.custom_minimum_size = Vector2(24, 24)
	icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	icon.modulate = accent
	icon_panel.add_child(icon)
	return icon_panel


func _popular_badge() -> PanelContainer:
	var badge := PanelContainer.new()
	badge.size_flags_vertical = Control.SIZE_SHRINK_BEGIN
	var box := StyleBoxFlat.new()
	box.bg_color = Brand.ROYAL_BLUE
	box.set_corner_radius_all(6)
	box.content_margin_left = 8
	box.content_margin_right = 8
	box.content_margin_top = 3
	box.content_margin_bottom = 3
	badge.add_theme_stylebox_override("panel", box)
	var label := Label.new()
	label.text = "Popular"
	label.add_theme_font_override("font", Brand.font)
	label.add_theme_font_size_override("font_size", 11)
	label.add_theme_color_override("font_color", Brand.DARK_TEXT)
	badge.add_child(label)
	return badge


func _feature_row(dark: bool, accent: Color, text: String) -> HBoxContainer:
	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 6)
	var icon := TextureRect.new()
	icon.texture = load("res://assets/icons/lucide/circle-check.svg")
	icon.custom_minimum_size = Vector2(14, 14)
	icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	icon.modulate = accent
	row.add_child(icon)
	var label := Label.new()
	label.text = text
	label.add_theme_font_override("font", Brand.font)
	label.add_theme_font_size_override("font_size", 12)
	label.add_theme_color_override("font_color", Brand.muted_color(dark))
	row.add_child(label)
	return row


func _price_tag(dark: bool, price: int) -> HBoxContainer:
	var row := HBoxContainer.new()
	row.add_theme_constant_override("separation", 4)
	var icon := TextureRect.new()
	icon.texture = load("res://assets/icons/lucide/star.svg")
	icon.custom_minimum_size = Vector2(14, 14)
	icon.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	icon.modulate = Brand.AMBER
	row.add_child(icon)
	var label := Label.new()
	label.text = _format_thousands(price)
	label.add_theme_font_override("font", Brand.font)
	label.add_theme_font_size_override("font_size", 14)
	label.add_theme_color_override("font_color", Brand.text_color(dark))
	row.add_child(label)
	return row


func _style_buy_button(button: Button) -> void:
	var normal := StyleBoxFlat.new()
	normal.bg_color = Brand.ROYAL_BLUE
	normal.set_corner_radius_all(8)
	var hover := StyleBoxFlat.new()
	hover.bg_color = Brand.SKY_BLUE
	hover.set_corner_radius_all(8)
	var disabled := StyleBoxFlat.new()
	disabled.bg_color = Color(Brand.ROYAL_BLUE, 0.35)
	disabled.set_corner_radius_all(8)
	button.add_theme_stylebox_override("normal", normal)
	button.add_theme_stylebox_override("hover", hover)
	button.add_theme_stylebox_override("pressed", normal)
	button.add_theme_stylebox_override("disabled", disabled)
	button.add_theme_color_override("font_color", Brand.DARK_TEXT)
	button.add_theme_color_override("font_hover_color", Brand.DARK_TEXT)
	button.add_theme_color_override("font_disabled_color", Color(Brand.DARK_TEXT, 0.7))


func _ask_purchase(sku: String, product_name: String, price: int) -> void:
	pending_sku = sku
	confirm_dialog.title = "Confirm purchase"
	confirm_dialog.dialog_text = "Buy %s for %d Rz Coins?" % [product_name, price]
	confirm_dialog.popup_centered()


func _confirm_purchase() -> void:
	if pending_sku == "__reset__":
		CreditsService.reset_qbank()
	elif not pending_sku.is_empty():
		CreditsService.purchase(pending_sku)
	pending_sku = ""


func _ask_reset() -> void:
	pending_sku = "__reset__"
	confirm_dialog.title = "Reset QBank eligibility"
	confirm_dialog.dialog_text = "Make all QBank questions eligible again? ELO, answer history, bookmarks, notes, reviews, and the rolling coin cap will be preserved."
	confirm_dialog.popup_centered()


func _show_error(message: String) -> void:
	status_label.text = message
	status_label.add_theme_color_override("font_color", Brand.MAGENTA)


func _show_message(message: String) -> void:
	status_label.text = message
	status_label.add_theme_color_override("font_color", Brand.SUCCESS)
	_refresh()


func _format_thousands(value: int) -> String:
	var digits := str(absi(value))
	var grouped := ""
	var count := 0
	for index in range(digits.length() - 1, -1, -1):
		grouped = digits[index] + grouped
		count += 1
		if count % 3 == 0 and index != 0:
			grouped = "," + grouped
	return ("-" if value < 0 else "") + grouped