@tool
class_name ImplantPanel
extends PanelContainer
## Root container for any implant UI overlay (D-169).
## Add ImplantHeader, ImplantSeparator, ImplantDataRow, ImplantTextBlock
## as children — they auto-style from the shared theme.

@export var theme_resource: ImplantTheme:
	set(value):
		theme_resource = value
		_apply_theme()

var _vbox: VBoxContainer


func _ready() -> void:
	# Constrain panel to its custom_minimum_size width
	size_flags_horizontal = Control.SIZE_SHRINK_END
	clip_contents = true

	_vbox = VBoxContainer.new()
	_vbox.name = "Content"
	add_child(_vbox)
	_apply_theme()


func _apply_theme() -> void:
	if not theme_resource:
		return

	# Panel background
	var style := StyleBoxFlat.new()
	style.bg_color = theme_resource.panel_bg
	style.border_color = theme_resource.separator
	style.border_width_top = int(theme_resource.border_width)
	style.border_width_bottom = int(theme_resource.border_width)
	style.border_width_left = int(theme_resource.border_width)
	style.border_width_right = int(theme_resource.border_width)
	style.content_margin_top = theme_resource.padding
	style.content_margin_bottom = theme_resource.padding
	style.content_margin_left = theme_resource.padding
	style.content_margin_right = theme_resource.padding
	add_theme_stylebox_override("panel", style)

	# VBox spacing
	if _vbox:
		_vbox.add_theme_constant_override("separation", 0)

	# Propagate theme to existing children
	for child in get_implant_children():
		if child.has_method("apply_implant_theme"):
			child.apply_implant_theme(theme_resource)


## Add an implant component to the panel.
func add_component(component: Control) -> void:
	if not _vbox:
		_vbox = VBoxContainer.new()
		_vbox.name = "Content"
		add_child(_vbox)
	_vbox.add_child(component)
	if theme_resource and component.has_method("apply_implant_theme"):
		component.apply_implant_theme(theme_resource)


## Get all implant component children.
func get_implant_children() -> Array:
	if not _vbox:
		return []
	return _vbox.get_children()


## Clear all components.
func clear() -> void:
	if not _vbox:
		return
	for child in _vbox.get_children():
		child.queue_free()