class_name BrowserKindMenuScreen
extends Control
## Root screen for the data browser app (T-1133, D-254 §4).
## Six-entity kind picker — the browser's "reach" screen equivalent. Emits
## kind_selected when the player commits to one of the six v1 entity kinds.

signal kind_selected(kind: String)

const COLOR_BG: Color = Color("#0d1117")
const PANEL_WIDTH: float = 340.0
const PANEL_MARGIN: float = 16.0

var _selected_idx: int = 0
var _panel = null  # ImplantPanel
var _rows: Array = []  # Array[ImplantDataRow], one per BrowserAdapter.KIND_ORDER entry


func _ready() -> void:
	mouse_filter = Control.MOUSE_FILTER_STOP
	set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)


func _draw() -> void:
	draw_rect(Rect2(Vector2.ZERO, get_rect().size), COLOR_BG)


func setup(implant_theme) -> void:
	_build_panel(implant_theme)


func enter(_payload: Dictionary) -> void:
	_rebuild_panel()


func leave() -> void:
	pass


func navigate(delta: int) -> void:
	var count: int = BrowserAdapter.KIND_ORDER.size()
	_selected_idx = wrapi(_selected_idx + delta, 0, count)
	_rebuild_panel()


func trigger_enter() -> void:
	kind_selected.emit(BrowserAdapter.KIND_ORDER[_selected_idx])


func current_kind() -> String:
	return BrowserAdapter.KIND_ORDER[_selected_idx]


# =============================================================================
# Panel
# =============================================================================


func _build_panel(implant_theme) -> void:
	_panel = ImplantPanel.new()
	_panel.name = "KindMenuPanel"
	_panel.theme_resource = implant_theme
	_panel.custom_minimum_size.x = PANEL_WIDTH
	_panel.mouse_filter = Control.MOUSE_FILTER_IGNORE
	_panel.position = Vector2(PANEL_MARGIN, PANEL_MARGIN)
	add_child(_panel)
	_rebuild_panel()


func _rebuild_panel() -> void:
	if not _panel:
		return
	_panel.clear()
	_rows.clear()

	_panel.add_component(ImplantHeader.new("DATA BROWSER", "REGISTRY INDEX"))
	_panel.add_component(ImplantSeparator.new())

	for i: int in range(BrowserAdapter.KIND_ORDER.size()):
		var kind: String = BrowserAdapter.KIND_ORDER[i]
		var label: String = BrowserAdapter.kind_label(kind)
		var prefix: String = "▸ " if i == _selected_idx else "  "
		var row := ImplantDataRow.new(prefix + label)
		_panel.add_component(row)
		_rows.append(row)

	_panel.add_component(ImplantSeparator.new())
	_panel.add_component(ImplantTextBlock.new("↑ ↓  select    enter  open    esc  close"))