extends Control

## NEO-74: scrollable prototype recipe list with per-row Craft buttons.

signal craft_requested(recipe_id: String)

const PrototypeHudTheme := preload("res://scripts/prototype_hud_theme.gd")
const HudThemeConstants := preload("res://scripts/prototype_hud_theme_constants.gd")

var _item_defs_client: Node = null
var _craft_buttons: Array[Button] = []

@onready var _scroll: ScrollContainer = $ScrollContainer
@onready var _vbox: VBoxContainer = $ScrollContainer/VBoxContainer


func _ready() -> void:
	if is_instance_valid(_scroll):
		_scroll.horizontal_scroll_mode = ScrollContainer.SCROLL_MODE_DISABLED
		_scroll.vertical_scroll_mode = ScrollContainer.SCROLL_MODE_AUTO
	resized.connect(_sync_vbox_width)


func setup(item_defs_client: Node) -> void:
	_item_defs_client = item_defs_client


func populate(recipes: Array) -> void:
	if not is_instance_valid(_vbox):
		return
	for child in _vbox.get_children():
		child.queue_free()
	_craft_buttons.clear()
	for row_variant in recipes:
		if not row_variant is Dictionary:
			continue
		var recipe: Dictionary = row_variant
		var recipe_id: String = str(recipe.get("id", ""))
		if recipe_id.is_empty():
			continue
		var row := VBoxContainer.new()
		row.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		row.add_theme_constant_override("separation", 4)
		var info := Label.new()
		info.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		info.text = _format_recipe_line(recipe)
		_apply_recipe_row_label(info)
		row.add_child(info)
		var btn_row := HBoxContainer.new()
		btn_row.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		btn_row.alignment = BoxContainer.ALIGNMENT_END
		var craft_btn := Button.new()
		craft_btn.text = "Craft"
		PrototypeHudTheme.apply_to_button(craft_btn, false)
		craft_btn.pressed.connect(_on_craft_pressed.bind(recipe_id))
		btn_row.add_child(craft_btn)
		row.add_child(btn_row)
		_vbox.add_child(row)
		_craft_buttons.append(craft_btn)
	call_deferred("_reset_scroll_after_populate")


func set_craft_busy(busy: bool) -> void:
	for btn in _craft_buttons:
		if is_instance_valid(btn):
			btn.disabled = busy


func _format_recipe_line(recipe: Dictionary) -> String:
	var recipe_id: String = str(recipe.get("id", ""))
	var display_name: String = str(recipe.get("displayName", recipe_id))
	var inputs_line: String = _format_inputs(recipe.get("inputs", []))
	return "%s (%s)\nneeds: %s" % [display_name, recipe_id, inputs_line]


func _format_inputs(raw_inputs: Variant) -> String:
	if raw_inputs == null or not raw_inputs is Array:
		return "—"
	var parts: PackedStringArray = PackedStringArray()
	for row_variant in raw_inputs as Array:
		if not row_variant is Dictionary:
			continue
		var row: Dictionary = row_variant
		var item_id: String = str(row.get("itemId", ""))
		var qty: int = int(row.get("quantity", 0))
		if item_id.is_empty() or qty <= 0:
			continue
		parts.append("%d× %s" % [qty, _item_display_name(item_id)])
	if parts.is_empty():
		return "—"
	return ", ".join(parts)


func _item_display_name(item_id: String) -> String:
	if is_instance_valid(_item_defs_client) and _item_defs_client.has_method("display_name_for"):
		return str(_item_defs_client.call("display_name_for", item_id))
	return item_id


func _on_craft_pressed(recipe_id: String) -> void:
	craft_requested.emit(recipe_id)


func _apply_recipe_row_label(label: Label) -> void:
	label.add_theme_font_size_override("font_size", HudThemeConstants.FONT_SIZE_SECONDARY)
	label.add_theme_constant_override("outline_size", HudThemeConstants.OUTLINE_SIZE)
	label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART


func _sync_vbox_width() -> void:
	if not is_instance_valid(_scroll) or not is_instance_valid(_vbox):
		return
	var width: float = _scroll.size.x
	if width <= 0.0:
		return
	_vbox.custom_minimum_size.x = width


func _reset_scroll_after_populate() -> void:
	_sync_vbox_width()
	if is_instance_valid(_scroll):
		_scroll.scroll_vertical = 0