class_name StartMenu
extends CanvasLayer
## Startup menu: pick a venue, start the shift, open settings, or quit.
## Keyboard and mouse both work. Replaces `V` as the player-facing venue path
## (the `V` bind stays as a debug shortcut).

signal venue_selected(scenario_id: String)
signal continue_requested()
signal help_requested()
signal settings_requested()
signal quit_requested()

const UiArt := preload("res://src/game/ui/art.gd")
const UiStyles := preload("res://src/game/ui/ui_styles.gd")
const Strings := preload("res://src/core/strings.gd")

const VENUES := [
	{"id": "hollywood_building", "label_key": "venue.hollywood_day.label",
		"blurb_key": "venue.hollywood_day.blurb"},
	{"id": "hollywood_building_night", "label_key": "venue.hollywood_night.label",
		"blurb_key": "venue.hollywood_night.blurb"},
	{"id": "joke_shop", "label_key": "venue.joke.label", "blurb_key": "venue.joke.blurb"},
	{"id": "tv_studio", "label_key": "venue.studio.label", "blurb_key": "venue.studio.blurb"},
]

var _index := 0
var _buttons: Array[Button] = []
var _root: Control = null
var _status: Label = null
var _continue_button: Button = null
var _campaign: Dictionary = {}

func _ready() -> void:
	layer = 20
	_build()
	hide()

func _build() -> void:
	_root = Control.new()
	_root.name = "StartMenuRoot"
	_root.set_anchors_preset(Control.PRESET_FULL_RECT)
	_root.mouse_filter = Control.MOUSE_FILTER_STOP
	add_child(_root)

	var art := UiArt.new()
	var backdrop_texture := art.texture("start_menu")
	if backdrop_texture != null:
		var backdrop := TextureRect.new()
		backdrop.name = "MenuArt"
		backdrop.texture = backdrop_texture
		backdrop.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
		backdrop.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_COVERED
		backdrop.set_anchors_preset(Control.PRESET_FULL_RECT)
		backdrop.mouse_filter = Control.MOUSE_FILTER_IGNORE
		_root.add_child(backdrop)
		# The mockup includes its own title/buttons; cover that panel with an
		# opaque rounded panel and keep the real controls on top.
		var panel := ColorRect.new()
		panel.name = "MenuPanel"
		panel.color = Color(0.075, 0.08, 0.095, 1.0)
		panel.set_anchor(SIDE_LEFT, 0.148)
		panel.set_anchor(SIDE_TOP, 0.061)
		panel.set_anchor(SIDE_RIGHT, 0.781)
		panel.set_anchor(SIDE_BOTTOM, 0.921)
		panel.mouse_filter = Control.MOUSE_FILTER_IGNORE
		_root.add_child(panel)
		var dim := ColorRect.new()
		dim.color = Color(0.02, 0.03, 0.05, 0.18)
		dim.set_anchors_preset(Control.PRESET_FULL_RECT)
		dim.mouse_filter = Control.MOUSE_FILTER_IGNORE
		_root.add_child(dim)
	else:
		var bg := ColorRect.new()
		bg.color = Color(0.03, 0.04, 0.07, 0.96)
		bg.set_anchors_preset(Control.PRESET_FULL_RECT)
		bg.mouse_filter = Control.MOUSE_FILTER_IGNORE
		_root.add_child(bg)

	var center := CenterContainer.new()
	center.set_anchors_preset(Control.PRESET_FULL_RECT)
	_root.add_child(center)

	var column := VBoxContainer.new()
	column.name = "Column"
	column.custom_minimum_size = Vector2(460, 0)
	column.add_theme_constant_override("separation", 14)
	center.add_child(column)

	var title := Label.new()
	title.text = Strings.lookup("ui.start_title")
	title.add_theme_font_size_override("font_size", 44)
	title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	column.add_child(title)

	var subtitle := Label.new()
	subtitle.text = Strings.lookup("ui.start_subtitle")
	subtitle.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	subtitle.add_theme_color_override("font_color", Color(0.72, 0.75, 0.82))
	column.add_child(subtitle)

	_status = Label.new()
	_status.name = "CampaignStatus"
	_status.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	_status.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	_status.add_theme_color_override("font_color", Color(0.62, 0.78, 0.9))
	column.add_child(_status)

	_continue_button = Button.new()
	_continue_button.name = "ContinueButton"
	_continue_button.custom_minimum_size = Vector2(460, 52)
	_continue_button.pressed.connect(_on_continue_pressed)
	UiStyles.apply_button(_continue_button, 18)
	column.add_child(_continue_button)

	for i in VENUES.size():
		var venue: Dictionary = VENUES[i]
		var button := Button.new()
		button.name = "Venue_%s" % venue["id"]
		button.text = "%s\n%s" % [Strings.lookup(str(venue["label_key"])), Strings.lookup(str(venue["blurb_key"]))]
		button.alignment = HORIZONTAL_ALIGNMENT_LEFT
		button.custom_minimum_size = Vector2(460, 62)
		button.pressed.connect(_on_venue_pressed.bind(i))
		UiStyles.apply_button(button, 18)
		column.add_child(button)
		_buttons.append(button)

	var spacer := Control.new()
	spacer.custom_minimum_size = Vector2(0, 10)
	column.add_child(spacer)

	var row := HBoxContainer.new()
	row.alignment = BoxContainer.ALIGNMENT_CENTER
	row.add_theme_constant_override("separation", 12)
	column.add_child(row)

	var help_button := Button.new()
	help_button.name = "HelpButton"
	help_button.text = Strings.lookup("ui.start_help")
	help_button.pressed.connect(func(): help_requested.emit())
	UiStyles.apply_button(help_button, 16)
	row.add_child(help_button)

	var settings_button := Button.new()
	settings_button.name = "SettingsButton"
	settings_button.text = Strings.lookup("ui.start_settings")
	settings_button.pressed.connect(func(): settings_requested.emit())
	UiStyles.apply_button(settings_button, 16)
	row.add_child(settings_button)

	var quit_button := Button.new()
	quit_button.name = "QuitButton"
	quit_button.text = Strings.lookup("ui.quit_game")
	quit_button.pressed.connect(func(): quit_requested.emit())
	UiStyles.apply_button(quit_button, 16)
	row.add_child(quit_button)

	var hint := Label.new()
	hint.text = Strings.lookup("ui.start_hint")
	hint.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	hint.add_theme_color_override("font_color", Color(0.55, 0.58, 0.65))
	column.add_child(hint)

	_focus_index(0)

func _focus_index(i: int) -> void:
	if _buttons.is_empty():
		return
	_index = clampi(i, 0, _buttons.size() - 1)
	_buttons[_index].grab_focus()

func open(campaign: Dictionary = {}) -> void:
	_campaign = campaign.duplicate(true)
	visible = true
	_root.visible = true
	Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
	var next_id := str(_campaign.get("next_venue", ""))
	var complete := bool(_campaign.get("complete", false))
	if _status:
		if complete:
			_status.text = Strings.lookup("ui.campaign_complete")
		elif next_id != "":
			_status.text = Strings.fmt("ui.campaign_status", [int(_campaign.get("shift_number", 1)), _venue_label(next_id)])
	if _continue_button:
		var next_label := _venue_label(next_id)
		_continue_button.text = Strings.fmt("ui.continue_shift", [next_label]) if next_id != "" else Strings.lookup("ui.campaign_complete_short")
		_continue_button.visible = not complete
	_focus_index(_index)

func _venue_label(id: String) -> String:
	for venue in VENUES:
		if str(venue["id"]) == id:
			return Strings.lookup(str(venue["label_key"]))
	return id.replace("_", " ").capitalize()

func _on_continue_pressed() -> void:
	close()
	continue_requested.emit()

func close() -> void:
	visible = false
	_root.visible = false

func _unhandled_input(event: InputEvent) -> void:
	if not visible:
		return
	if event is InputEventKey and event.pressed and not event.echo:
		match event.keycode:
			KEY_UP, KEY_W:
				_focus_index(_index - 1)
				get_viewport().set_input_as_handled()
			KEY_DOWN, KEY_S:
				_focus_index(_index + 1)
				get_viewport().set_input_as_handled()
			KEY_ENTER, KEY_KP_ENTER, KEY_SPACE:
				_on_venue_pressed(_index)
				get_viewport().set_input_as_handled()
			KEY_ESCAPE:
				quit_requested.emit()
				get_viewport().set_input_as_handled()

func _on_venue_pressed(i: int) -> void:
	if i < 0 or i >= VENUES.size():
		return
	var venue: Dictionary = VENUES[i]
	close()
	venue_selected.emit(str(venue["id"]))