## Individual tile in the prestige buff graph UI.
## Visually represents a single PrestigeBuffNode with locked/available/unlocked states.
## The PrestigeBuffNode resource is assigned directly via the editor export.
class_name PrestigeBuffGraphTile
extends PanelContainer

## The prestige buff node this tile represents. Set in the scene editor.
@export var prestige_buff: PrestigeBuffNode

@onready var _button: Button = $Button
@onready var _icon: TextureRect = $Button/HBoxContainer/Icon
@onready var _name_label: Label = $Button/HBoxContainer/VBoxContainer/NameLabel
@onready var _effect_label: Label = $Button/HBoxContainer/VBoxContainer/EffectLabel
@onready var _cost_label: Label = $Button/HBoxContainer/VBoxContainer/CostLabel
@onready var _state_label: Label = $Button/HBoxContainer/StateLabel

var _game_state: LevelGameState


func _ready() -> void:
	_game_state = find_parent("LevelGameState")
	_button.pressed.connect(_on_button_pressed)

	if _game_state:
		_game_state.prestige_buff_unlocked.connect(_on_prestige_buff_unlocked)
		_game_state.currency_changed.connect(_on_currency_changed)

	if prestige_buff == null:
		push_warning("PrestigeBuffGraphTile: prestige_buff is not set")
		return

	_refresh_visuals()
	_refresh_state()


func get_node_id() -> StringName:
	if prestige_buff:
		return prestige_buff.id
	return &""


func _refresh_visuals() -> void:
	if prestige_buff == null:
		return

	_name_label.text = prestige_buff.display_name
	_cost_label.text = "Cost: %s" % prestige_buff.get_cost().to_string_suffix(2)

	if prestige_buff.icon:
		_icon.texture = prestige_buff.icon

	var effect_text: String = _format_effect_description()
	_effect_label.text = effect_text
	_effect_label.visible = not effect_text.is_empty()


func _refresh_state() -> void:
	if prestige_buff == null or _game_state == null:
		return

	var unlocked: bool = _game_state.is_prestige_buff_unlocked(prestige_buff.id)
	var available: bool = _game_state.can_purchase_prestige_buff(prestige_buff.id)

	if unlocked:
		_state_label.text = "✓ Unlocked"
		_button.disabled = true
		modulate = Color.GREEN
	elif available:
		_state_label.text = "Available"
		_button.disabled = false
		modulate = Color.WHITE
	else:
		_state_label.text = "Locked"
		_button.disabled = true
		modulate = Color(0.5, 0.5, 0.5, 1.0)


func _format_effect_description() -> String:
	if prestige_buff == null:
		return ""

	match prestige_buff.effect_type:
		PrestigeBuffNode.EffectType.CURRENCY_PRODUCTION_MULTIPLIER:
			if prestige_buff.target_id != &"":
				return "+%.0f%% %s production" % [((prestige_buff.effect_value - 1.0) * 100.0), prestige_buff.target_id]
			return "+%.0f%% all production" % ((prestige_buff.effect_value - 1.0) * 100.0)
		PrestigeBuffNode.EffectType.BUILDING_CREATION_BONUS:
			return "+%.0f%% gain on build" % ((prestige_buff.effect_value - 1.0) * 100.0)
		PrestigeBuffNode.EffectType.WORKER_THRESHOLD_MULTIPLIER:
			return "+%.0f%% with 10+ workers" % ((prestige_buff.effect_value - 1.0) * 100.0)
		PrestigeBuffNode.EffectType.CARRYOVER_BUILDINGS:
			return "Keep %d buildings on prestige" % int(prestige_buff.effect_value)
		PrestigeBuffNode.EffectType.UNLOCK_AUTO_BUY_WORKER:
			return "Unlock auto-buy worker"
		PrestigeBuffNode.EffectType.HOVER_SPEED_BOOST:
			return "Hover to speed up workers"
		PrestigeBuffNode.EffectType.UNLOCK_BUILDING:
			return "Unlock %s building" % prestige_buff.target_id
		PrestigeBuffNode.EffectType.WORKER_PRODUCTIVITY:
			return "+%.0f%% worker productivity" % ((prestige_buff.effect_value - 1.0) * 100.0)
		PrestigeBuffNode.EffectType.RESEARCH_XP_MULTIPLIER:
			return "+%.0f%% research XP" % ((prestige_buff.effect_value - 1.0) * 100.0)
		_:
			return ""


func _on_button_pressed() -> void:
	if _game_state and prestige_buff:
		_game_state.purchase_prestige_buff(prestige_buff.id)


func _on_prestige_buff_unlocked(buff_id: StringName) -> void:
	if prestige_buff and buff_id == prestige_buff.id:
		_refresh_state()


func _on_currency_changed(currency_id: StringName, _new_amount: BigNumber) -> void:
	if _game_state == null or prestige_buff == null:
		return
	var asc_id: StringName = _game_state.get_prestige_currency_id()
	if currency_id == asc_id:
		_refresh_state()