extends Control

## Intro menu: Siim's arena animation as a looping video background.
## Play / Options / Credits / Exit UI are overlaid; Play follows the cape.

const GAME_SCENE := "res://scene.tscn"
const FADE_TIME := 0.6

# Arena palette: aged gold on dark leather, warm cream on hover.
const MENU_GOLD  := Color(0.85, 0.66, 0.20)
const MENU_CREAM := Color(0.93, 0.88, 0.72)

## Cape centroid per frame (normalized 0-1), detected from red-pixel centroid.
## 34 frames at 24 fps = 1.4167 s loop.
const VIDEO_FPS := 24.0
const CAPE_POS: Array = [
	Vector2(0.4530, 0.6513),
	Vector2(0.4521, 0.6516),
	Vector2(0.4495, 0.6524),
	Vector2(0.4456, 0.6537),
	Vector2(0.4415, 0.6550),
	Vector2(0.4373, 0.6578),
	Vector2(0.4338, 0.6616),
	Vector2(0.4306, 0.6669),
	Vector2(0.4273, 0.6673),
	Vector2(0.4256, 0.6586),
	Vector2(0.4258, 0.6428),
	Vector2(0.4281, 0.6243),
	Vector2(0.4324, 0.6086),
	Vector2(0.4382, 0.5997),
	Vector2(0.4439, 0.5972),
	Vector2(0.4483, 0.5970),
	Vector2(0.4512, 0.5986),
	Vector2(0.4529, 0.6025),
	Vector2(0.4535, 0.6078),
	Vector2(0.4533, 0.6135),
	Vector2(0.4539, 0.6159),
	Vector2(0.4545, 0.6120),
	Vector2(0.4546, 0.6050),
	Vector2(0.4541, 0.5988),
	Vector2(0.4528, 0.5961),
	Vector2(0.4508, 0.6012),
	Vector2(0.4485, 0.6123),
	Vector2(0.4466, 0.6256),
	Vector2(0.4456, 0.6388),
	Vector2(0.4457, 0.6491),
	Vector2(0.4473, 0.6552),
	Vector2(0.4492, 0.6567),
	Vector2(0.4513, 0.6556),
	Vector2(0.4524, 0.6526),
]

## Friendly labels for the rebindable actions (order defines list order).
const ACTION_LABELS: Dictionary = {
	&"move_forward": "Move Forward",
	&"move_back": "Move Back",
	&"move_left": "Move Left",
	&"move_right": "Move Right",
	&"ability_kick": "Kick",
	&"ability_slam": "Slam",
	&"ability_dash": "Dash",
	&"ability_roll": "Roll",
}

@onready var main_panel: Control = $MainPanel
@onready var options_panel: Control = $OptionsPanel
@onready var credits_panel: Control = $CreditsPanel
@onready var rebind_list: VBoxContainer = $OptionsPanel/VBox/Scroll/RebindList
@onready var fade_rect: ColorRect = $FadeRect
@onready var play_button: Button = $MainPanel/PlayButton
@onready var options_button: Button = $MainPanel/OptionsButton
@onready var credits_button: Button = $MainPanel/CreditsButton
@onready var exit_button: Button = $MainPanel/ExitButton
@onready var options_back: Button = $OptionsPanel/VBox/BackButton
@onready var credits_back: Button = $CreditsPanel/VBox/BackButton
@onready var video: VideoStreamPlayer = $VideoStreamPlayer

var _listening_action: StringName = &""
var _listening_button: Button = null


func _ready() -> void:
	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
	options_panel.visible = false
	credits_panel.visible = false
	fade_rect.color = Color(0, 0, 0, 0)
	if video.stream != null:
		video.play()
	video.finished.connect(video.play)  # loop the background clip

	play_button.pressed.connect(_on_play_pressed)
	options_button.pressed.connect(_on_options_pressed)
	credits_button.pressed.connect(_on_credits_pressed)
	exit_button.pressed.connect(_on_exit_pressed)
	options_back.pressed.connect(_close_subpanels)
	credits_back.pressed.connect(_close_subpanels)
	_apply_theme()
	_build_version_label()
	_build_rebind_rows()
	play_button.grab_focus()


# Version banner in the bottom-right corner so it's clear this is an early build.
func _build_version_label() -> void:
	var lbl := Label.new()
	lbl.text = GameVersion.full()
	lbl.add_theme_font_override("font", UiFonts.body())
	lbl.add_theme_font_size_override("font_size", 16)
	lbl.add_theme_color_override("font_color", MENU_CREAM)
	lbl.add_theme_color_override("font_outline_color", Color.BLACK)
	lbl.add_theme_constant_override("outline_size", 4)
	lbl.set_anchors_preset(Control.PRESET_BOTTOM_RIGHT)
	lbl.grow_horizontal = Control.GROW_DIRECTION_BEGIN
	lbl.grow_vertical = Control.GROW_DIRECTION_BEGIN
	lbl.offset_right = -16.0
	lbl.offset_bottom = -12.0
	lbl.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(lbl)


# Give the whole menu the Cinzel look and swap the generic translucent boxes for
# engraved bronze plaques (dark leather fill, gold border with a heavier bottom
# edge for a chiselled-tablet feel).
func _apply_theme() -> void:
	_style_button(play_button, true)
	for btn: Button in [options_button, credits_button, exit_button, options_back, credits_back]:
		_style_button(btn, false)
	for path: String in ["OptionsPanel/VBox/TitleLabel", "CreditsPanel/VBox/TitleLabel"]:
		var title := get_node_or_null(path) as Label
		if title != null:
			title.add_theme_font_override("font", UiFonts.title())
			title.add_theme_color_override("font_color", MENU_GOLD)
	for path: String in ["OptionsPanel/VBox/Hint", "CreditsPanel/VBox/Names"]:
		var lbl := get_node_or_null(path) as Label
		if lbl != null:
			lbl.add_theme_font_override("font", UiFonts.body())
			lbl.add_theme_color_override("font_color", MENU_CREAM)


func _style_button(btn: Button, big: bool) -> void:
	btn.add_theme_font_override("font", UiFonts.title() if big else UiFonts.body())
	btn.add_theme_color_override("font_color", MENU_GOLD)
	btn.add_theme_color_override("font_hover_color", MENU_CREAM)
	btn.add_theme_color_override("font_focus_color", MENU_CREAM)
	btn.add_theme_color_override("font_pressed_color", MENU_CREAM)
	btn.add_theme_color_override("font_outline_color", Color(0, 0, 0, 1))
	btn.add_theme_constant_override("outline_size", 8 if big else 5)
	btn.add_theme_stylebox_override("normal", _plaque(false))
	btn.add_theme_stylebox_override("hover", _plaque(true))
	btn.add_theme_stylebox_override("pressed", _plaque(true))
	btn.add_theme_stylebox_override("focus", _plaque(true))


func _plaque(hot: bool) -> StyleBoxFlat:
	var s := StyleBoxFlat.new()
	s.bg_color = Color(0.14, 0.09, 0.04, 0.94) if hot else Color(0.07, 0.05, 0.03, 0.82)
	s.set_border_width_all(2)
	s.border_width_bottom = 5
	s.border_color = MENU_CREAM if hot else MENU_GOLD
	s.set_corner_radius_all(2)
	s.content_margin_left   = 24.0
	s.content_margin_right  = 24.0
	s.content_margin_top    = 8.0
	s.content_margin_bottom = 10.0
	s.shadow_color = Color(0.0, 0.0, 0.0, 0.5)
	s.shadow_size = 6
	return s


func _process(_delta: float) -> void:
	if not main_panel.visible or video.stream == null:
		return
	var frame_count := CAPE_POS.size()
	var t := video.stream_position
	var frame_idx := int(t * VIDEO_FPS) % frame_count
	var cape: Vector2 = CAPE_POS[frame_idx]
	play_button.anchor_left = cape.x
	play_button.anchor_right = cape.x
	play_button.anchor_top = cape.y
	play_button.anchor_bottom = cape.y


func _build_rebind_rows() -> void:
	for child in rebind_list.get_children():
		child.queue_free()
	for action: StringName in ACTION_LABELS:
		var row := HBoxContainer.new()
		row.size_flags_horizontal = Control.SIZE_EXPAND_FILL

		var name_label := Label.new()
		name_label.text = ACTION_LABELS[action]
		name_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
		name_label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
		name_label.add_theme_font_override("font", UiFonts.body())
		name_label.add_theme_color_override("font_color", MENU_CREAM)
		name_label.add_theme_color_override("font_outline_color", Color.BLACK)
		name_label.add_theme_constant_override("outline_size", 4)
		row.add_child(name_label)

		var key_button := Button.new()
		key_button.custom_minimum_size = Vector2(160, 0)
		key_button.text = Controls.get_key_label(action)
		_style_button(key_button, false)
		key_button.pressed.connect(_on_rebind_pressed.bind(action, key_button))
		row.add_child(key_button)

		rebind_list.add_child(row)


func _on_play_pressed() -> void:
	_set_buttons_disabled(true)
	var tween := create_tween()
	tween.tween_property(fade_rect, "color:a", 1.0, FADE_TIME)
	tween.tween_callback(func() -> void:
		get_tree().change_scene_to_file(GAME_SCENE))


func _on_options_pressed() -> void:
	main_panel.visible = false
	options_panel.visible = true
	options_back.grab_focus()


func _on_credits_pressed() -> void:
	main_panel.visible = false
	credits_panel.visible = true
	credits_back.grab_focus()


func _on_exit_pressed() -> void:
	get_tree().quit()


func _close_subpanels() -> void:
	_cancel_listening()
	options_panel.visible = false
	credits_panel.visible = false
	main_panel.visible = true
	play_button.grab_focus()


func _set_buttons_disabled(value: bool) -> void:
	play_button.disabled = value
	options_button.disabled = value
	credits_button.disabled = value
	exit_button.disabled = value


func _on_rebind_pressed(action: StringName, button: Button) -> void:
	_cancel_listening()
	_listening_action = action
	_listening_button = button
	button.text = "Press a key…"


func _cancel_listening() -> void:
	if _listening_button != null:
		_listening_button.text = Controls.get_key_label(_listening_action)
	_listening_action = &""
	_listening_button = null


func _unhandled_input(event: InputEvent) -> void:
	if _listening_action == &"":
		return
	if event is InputEventKey and event.pressed and not event.echo:
		if event.physical_keycode == KEY_ESCAPE:
			_cancel_listening()
		else:
			var new_event := InputEventKey.new()
			new_event.physical_keycode = event.physical_keycode
			Controls.rebind(_listening_action, new_event)
			_listening_button.text = Controls.get_key_label(_listening_action)
			_listening_action = &""
			_listening_button = null
		get_viewport().set_input_as_handled()