extends VBoxContainer

@export var selection_manager: SelectionManager
@export var name_label: Label
@export var selection_panel: Control
@export var content_panel: Container
var grid: Grid

func _ready():
	selection_manager.selection_updated.connect(_selection_updated)
	grid = Util.find(Grid)

func deselect():
	name_label.text = "Nothing Selected"
	if !selection_panel.hidden: selection_panel.hide()
	for child in content_panel.get_children(): child.queue_free()

func select_single(item: Building):
	name_label.text = item.data.tile_name
	selection_panel.show()
	for child in content_panel.get_children(): child.queue_free()
	
	for upgrade in item.data.upgrade_paths:
		var container = FoldableContainer.new()
		container.folded = false
		container.title = upgrade.tile_name
		content_panel.add_child(container)
		for thing in upgrade.field_requirements:
			match thing.get_script():
				FieldMin:
					var req = thing as FieldMin
					var checkbox = CheckBox.new()
					checkbox.text = str(Grid.Field.keys()[req.field])
					checkbox.button_pressed = req.is_satisfied_at_position(grid, item.tile_pos)
					checkbox.disabled = true
					container.add_child(checkbox)
				FieldMax:
					var req = thing as FieldMax
					var checkbox = CheckBox.new()
					checkbox.text = str(Grid.Field.keys()[req.field])
					checkbox.button_pressed = req.is_satisfied_at_position(grid, item.tile_pos)
					checkbox.disabled = true
					container.add_child(checkbox)
				

func _selection_updated(things: Array[Building]):
	if things.size() == 0: deselect()
	if things.size() == 1: select_single(things[0])