extends Control

## D-053: Stance indicator — implant-styled badge (D-169).
## Sprint/Walk/Careful/Crouch. Icon (D-086) + color-coded label.

const STANCE_COLORS := {
	"Sprint": Color("#d45d5d"),  # Red — fast, loud, dangerous
	"Walk": Color("#c8d0e0"),    # Default — neutral white-blue
	"Careful": Color("#6bc9a6"), # Green — quiet, observant
	"Crouch": Color("#e8c547"),  # Amber — very quiet, slow
}

const STANCE_ICONS := {
	"Sprint": "res://assets/icons/icon_stance_sprint.svg",
	"Walk": "res://assets/icons/icon_stance_walk.svg",
	"Careful": "res://assets/icons/icon_stance_careful.svg",
	"Crouch": "res://assets/icons/icon_stance_crouch.svg",
}

var _current_stance: String = "Walk"
var _panel: ImplantPanel
var _icon: TextureRect
var _label: Label
var _icon_mat: ShaderMaterial
var _icon_cache: Dictionary = {}  # stance name → Texture2D


func _ready() -> void:
	mouse_filter = Control.MOUSE_FILTER_IGNORE
	var theme_res := load("res://ui/implant/default_implant.tres") as ImplantTheme
	var icon_shader := load("res://shaders/icon_tint.gdshader") as Shader
	if not theme_res:
		push_error("StanceIndicator: failed to load implant theme")
		return
	if not icon_shader:
		push_error("StanceIndicator: failed to load icon_tint shader")
		return

	# Preload all stance icons at startup
	for stance_name in STANCE_ICONS:
		var tex := load(STANCE_ICONS[stance_name]) as Texture2D
		if tex:
			_icon_cache[stance_name] = tex
		else:
			push_error("StanceIndicator: failed to load icon for %s" % stance_name)

	_panel = ImplantPanel.new()
	_panel.name = "StancePanel"
	_panel.theme_resource = theme_res
	_panel.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(_panel)

	var hbox := HBoxContainer.new()
	hbox.add_theme_constant_override("separation", 4)
	hbox.mouse_filter = Control.MOUSE_FILTER_IGNORE

	_icon = TextureRect.new()
	_icon.expand_mode = TextureRect.EXPAND_KEEP_SIZE
	_icon.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	_icon.custom_minimum_size = Vector2(20.0, 20.0)  # D-086: 20×20 viewBox
	_icon.mouse_filter = Control.MOUSE_FILTER_IGNORE
	_icon_mat = ShaderMaterial.new()
	_icon_mat.shader = icon_shader
	_icon_mat.set_shader_parameter("tint_color", STANCE_COLORS["Walk"])
	_icon.material = _icon_mat
	hbox.add_child(_icon)

	_label = Label.new()
	_label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	_label.mouse_filter = Control.MOUSE_FILTER_IGNORE
	_label.add_theme_font_size_override("font_size", theme_res.font_body)
	hbox.add_child(_label)

	_panel.add_component(hbox)
	_apply_stance("Walk")


func _apply_stance(stance: String) -> void:
	_current_stance = stance
	var color: Color = STANCE_COLORS.get(stance, Color("#c8d0e0"))

	if _icon:
		var tex: Texture2D = _icon_cache.get(stance)
		if tex:
			_icon.texture = tex
		if _icon_mat:
			_icon_mat.set_shader_parameter("tint_color", color)

	if _label:
		_label.text = stance
		_label.add_theme_color_override("font_color", color)


func update_from_state() -> void:
	var stance: String = GameState.player_stance
	if stance == _current_stance:
		return
	_apply_stance(stance)


func get_current_stance() -> String:
	return _current_stance