extends CanvasLayer
## Universal "rotate to landscape" prompt (autoload `OrientationGuard`). The cross-device
## half of landscape enforcement: screen.orientation.lock (controls_manager.gd) handles
## Android, but iOS Safari has no lock API, and some browsers only lock in fullscreen — so
## wherever the device ends up portrait, we simply ask the player to turn it. No canvas
## rotation or input remapping (those break touch coordinates), so it works on every phone
## and browser cleanly. Only ever shows on touch-primary devices, only while portrait.

var _panel: ColorRect


func _ready() -> void:
	layer = 128  # above HUD, touch UI, everything
	process_mode = Node.PROCESS_MODE_ALWAYS

	_panel = ColorRect.new()
	_panel.color = Color(0.05, 0.03, 0.02, 0.97)
	_panel.set_anchors_preset(Control.PRESET_FULL_RECT)
	_panel.mouse_filter = Control.MOUSE_FILTER_STOP  # swallow taps to the game behind it
	_panel.visible = false
	add_child(_panel)

	var center := CenterContainer.new()
	center.set_anchors_preset(Control.PRESET_FULL_RECT)
	center.mouse_filter = Control.MOUSE_FILTER_IGNORE
	_panel.add_child(center)

	var box := VBoxContainer.new()
	box.alignment = BoxContainer.ALIGNMENT_CENTER
	box.add_theme_constant_override("separation", 14)
	center.add_child(box)

	var title := Label.new()
	title.text = "Rotate your device"
	title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	title.add_theme_font_size_override("font_size", 44)
	title.add_theme_color_override("font_color", Color(1.0, 0.78, 0.22))
	box.add_child(title)

	var sub := Label.new()
	sub.text = "Turn it sideways to play in landscape"
	sub.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	sub.add_theme_font_size_override("font_size", 22)
	sub.add_theme_color_override("font_color", Color(0.85, 0.85, 0.85))
	box.add_child(sub)

	get_viewport().size_changed.connect(_update)
	_update.call_deferred()


func _update() -> void:
	_panel.visible = _should_guard() and _is_portrait()


func _is_portrait() -> bool:
	var s := get_viewport().get_visible_rect().size
	return s.y > s.x


# Touch-primary devices only — never a desktop browser with a tall window (they can't rotate
# a monitor). Reuses the same conservative detection the touch UI uses.
func _should_guard() -> bool:
	return Controls.use_touch_ui()