extends CanvasLayer
## Top-bar HUD: speed/pause buttons, tick counter, and save/load controls.
##
## Buttons call Sim.set_speed(); active button is yellow-tinted.
## Tick label updates on every EventBus.sim_tick signal.
## Keyboard shortcuts (pause / speed_normal / speed_fast / speed_ultra) are
## handled here so the bar is the single owner of speed-input logic.
##
## Phase 16: SaveBtn → SaveSystem.save_to_slot(&"manual").
##           LoadBtn → opens the LoadMenu CanvasLayer (mounted by main.gd).

const ACTIVE_MODULATE := Color(1.2, 1.2, 0.8)
const IDLE_MODULATE   := Color.WHITE

@onready var pause_btn   : Button = $Anchor/ButtonRow/PauseBtn
@onready var normal_btn  : Button = $Anchor/ButtonRow/NormalBtn
@onready var fast_btn    : Button = $Anchor/ButtonRow/FastBtn
@onready var ultra_btn   : Button = $Anchor/ButtonRow/UltraBtn
@onready var save_btn    : Button = $Anchor/ButtonRow/SaveBtn
@onready var load_btn    : Button = $Anchor/ButtonRow/LoadBtn
@onready var tick_label    : Label  = $Anchor/TickLabel
@onready var clock_label   : Label  = $Anchor/ClockLabel
@onready var season_label  : Label  = $Anchor/SeasonLabel

# Maps Speed enum value → the corresponding Button node.
var _speed_buttons: Dictionary = {}

# Early-out cache: only set label text when the string changes.
var _last_clock_text: String = ""
var _last_season_text: String = ""

## Injected by main.gd after mount so we don't walk the tree with get_node.
var load_menu: CanvasLayer = null

## Phase 17 — injected by main.gd; used by the runtime-added Settings button.
var settings_menu: CanvasLayer = null
## Phase 17 (Agent B) — injected by main.gd; used by the runtime-added Build button.
var build_drawer: CanvasLayer = null
## Phase 17 (Agent C) — injected by main.gd; used by the runtime-added Work / Log buttons.
var work_priority_matrix: CanvasLayer = null
var alerts_log_panel: CanvasLayer = null
## Kept to drive the unread badge text.
var _log_btn: Button = null


func _ready() -> void:
	var button_row: HBoxContainer = get_node_or_null("Anchor/ButtonRow")
	if button_row != null:
		button_row.add_theme_constant_override("separation", 4)

	pause_btn.text   = Strings.t(&"speed.pause")
	normal_btn.text  = Strings.t(&"speed.normal")
	fast_btn.text    = Strings.t(&"speed.fast")
	ultra_btn.text   = Strings.t(&"speed.ultra")
	save_btn.text    = Strings.t(&"ui.save")
	load_btn.text    = Strings.t(&"ui.load")

	# Phase 19 — desktop hover tooltips (no-op on touch).
	pause_btn.tooltip_text  = Strings.t(&"tooltip.pause")
	normal_btn.tooltip_text = Strings.t(&"tooltip.speed_normal")
	fast_btn.tooltip_text   = Strings.t(&"tooltip.speed_fast")
	ultra_btn.tooltip_text  = Strings.t(&"tooltip.speed_ultra")
	save_btn.tooltip_text   = Strings.t(&"tooltip.save")
	load_btn.tooltip_text   = Strings.t(&"tooltip.load")
	tick_label.text   = "(boot)"
	clock_label.text  = Strings.t(&"clock.format").format({"d": 1, "t": "06:00"})
	season_label.text = Strings.t(&"season.format").format({"s": Strings.t(&"season.spring"), "d": 1})

	_speed_buttons = {
		Sim.Speed.PAUSE:  pause_btn,
		Sim.Speed.NORMAL: normal_btn,
		Sim.Speed.FAST:   fast_btn,
		Sim.Speed.ULTRA:  ultra_btn,
	}

	pause_btn.pressed.connect(func() -> void: Sim.set_speed(Sim.Speed.PAUSE))
	normal_btn.pressed.connect(func() -> void: Sim.set_speed(Sim.Speed.NORMAL))
	fast_btn.pressed.connect(func() -> void: Sim.set_speed(Sim.Speed.FAST))
	ultra_btn.pressed.connect(func() -> void: Sim.set_speed(Sim.Speed.ULTRA))
	save_btn.pressed.connect(_on_save_pressed)
	load_btn.pressed.connect(_on_load_pressed)

	EventBus.speed_changed.connect(_on_speed_changed)
	EventBus.sim_tick.connect(_on_sim_tick)
	EventBus.sim_tick.connect(_on_clock_refresh)
	EventBus.sim_tick.connect(_on_season_refresh)
	EventBus.save_started.connect(_on_save_started)
	EventBus.save_finished.connect(_on_save_finished)

	# Reflect the initial speed state without emitting a signal.
	_apply_highlight(Sim.current_speed)


func _unhandled_input(event: InputEvent) -> void:
	if event.is_action_pressed("pause"):
		Sim.set_speed(Sim.Speed.PAUSE)
	elif event.is_action_pressed("speed_normal"):
		Sim.set_speed(Sim.Speed.NORMAL)
	elif event.is_action_pressed("speed_fast"):
		Sim.set_speed(Sim.Speed.FAST)
	elif event.is_action_pressed("speed_ultra"):
		Sim.set_speed(Sim.Speed.ULTRA)


func _on_speed_changed(new_speed: int) -> void:
	_apply_highlight(new_speed as Sim.Speed)


func _on_sim_tick(tick_number: int) -> void:
	tick_label.text = Strings.t(&"hud.tick").format({"n": tick_number})


func _on_clock_refresh(_n: int) -> void:
	var t: String = Strings.t(&"clock.format").format({"d": Clock.current_day(), "t": Clock.time_string()})
	if t != _last_clock_text:
		_last_clock_text = t
		clock_label.text = t


func _on_season_refresh(_n: int) -> void:
	var season_key: StringName = &"season." + String(Clock.current_season())
	var t: String = Strings.t(&"season.format").format({
		"s": Strings.t(season_key),
		"d": Clock.day_of_season() + 1,  # display as 1-indexed
	})
	if t != _last_season_text:
		_last_season_text = t
		season_label.text = t


func _apply_highlight(speed: Sim.Speed) -> void:
	for s: int in _speed_buttons:
		_speed_buttons[s].modulate = ACTIVE_MODULATE if s == speed else IDLE_MODULATE


func _on_save_pressed() -> void:
	SaveSystem.save_to_slot(&"manual")
	Audit.log("top_bar", "manual save triggered")


func _on_load_pressed() -> void:
	if load_menu != null and load_menu.has_method("open"):
		load_menu.open()
	else:
		Audit.log("top_bar", "LoadMenu not mounted — skipping open()")


func _on_save_started(_slot: StringName) -> void:
	save_btn.disabled = true
	save_btn.text = Strings.t(&"ui.saving")


func _on_save_finished(_slot: StringName, _ok: bool) -> void:
	save_btn.disabled = false
	save_btn.text = Strings.t(&"ui.save")


## Phase 17 (Agent B) — called by main.gd after build_drawer is injected.
## Appends a Build button to the ButtonRow at runtime so no .tscn edit is needed.
func _add_build_btn() -> void:
	var button_row: HBoxContainer = get_node_or_null("Anchor/ButtonRow")
	if button_row == null:
		Audit.log("top_bar", "_add_build_btn: ButtonRow not found — skipping")
		return
	var build_btn := Button.new()
	build_btn.name = "BuildBtn"
	build_btn.text = "🔨"
	build_btn.custom_minimum_size = Vector2(40, 40)
	build_btn.focus_mode = Control.FOCUS_NONE
	build_btn.tooltip_text = Strings.t(&"tooltip.build")
	build_btn.pressed.connect(_on_build_pressed)
	button_row.add_child(build_btn)
	Audit.log("top_bar", "Build button added to ButtonRow")


func _on_build_pressed() -> void:
	if build_drawer != null and build_drawer.has_method("toggle"):
		build_drawer.toggle()
	else:
		Audit.log("top_bar", "BuildDrawer not mounted — skipping toggle()")


## Phase 17 — called by main.gd after settings_menu is injected.
## Appends a Settings button to the ButtonRow at runtime so no .tscn edit is needed.
func _add_settings_btn() -> void:
	var button_row: HBoxContainer = get_node_or_null("Anchor/ButtonRow")
	if button_row == null:
		Audit.log("top_bar", "_add_settings_btn: ButtonRow not found — skipping")
		return
	var settings_btn := Button.new()
	settings_btn.name = "SettingsBtn"
	settings_btn.text = "⚙"
	settings_btn.custom_minimum_size = Vector2(40, 40)
	settings_btn.focus_mode = Control.FOCUS_NONE
	settings_btn.tooltip_text = Strings.t(&"tooltip.settings")
	settings_btn.pressed.connect(_on_settings_pressed)
	button_row.add_child(settings_btn)
	Audit.log("top_bar", "Settings button added to ButtonRow")


func _on_settings_pressed() -> void:
	if settings_menu != null and settings_menu.has_method("open"):
		settings_menu.open()
	else:
		Audit.log("top_bar", "SettingsMenu not mounted — skipping open()")


## Phase 17 (Agent C) — called by main.gd after work_priority_matrix and
## alerts_log_panel are injected.  Appends "Work" and "Log" buttons to ButtonRow.
func _add_work_log_btns() -> void:
	var button_row: HBoxContainer = get_node_or_null("Anchor/ButtonRow")
	if button_row == null:
		Audit.log("top_bar", "_add_work_log_btns: ButtonRow not found — skipping")
		return

	var work_btn := Button.new()
	work_btn.name = "WorkBtn"
	work_btn.text = "👷"
	work_btn.custom_minimum_size = Vector2(40, 40)
	work_btn.focus_mode = Control.FOCUS_NONE
	work_btn.tooltip_text = Strings.t(&"tooltip.work")
	work_btn.pressed.connect(_on_work_pressed)
	button_row.add_child(work_btn)

	_log_btn = Button.new()
	_log_btn.name = "LogBtn"
	_log_btn.text = "🔔"
	_log_btn.custom_minimum_size = Vector2(40, 40)
	_log_btn.focus_mode = Control.FOCUS_NONE
	_log_btn.tooltip_text = Strings.t(&"tooltip.log")
	_log_btn.pressed.connect(_on_log_pressed)
	button_row.add_child(_log_btn)

	# Give the AlertsLog a reference to the Log button so it can update the badge.
	if alerts_log_panel != null and alerts_log_panel.get("log_button") != null:
		alerts_log_panel.log_button = _log_btn
	elif alerts_log_panel != null:
		alerts_log_panel.set("log_button", _log_btn)

	Audit.log("top_bar", "Work + Log buttons added to ButtonRow")


func _on_work_pressed() -> void:
	if work_priority_matrix != null and work_priority_matrix.has_method("open"):
		work_priority_matrix.open()
	else:
		Audit.log("top_bar", "WorkPriorityMatrix not mounted — skipping open()")


func _on_log_pressed() -> void:
	if alerts_log_panel != null and alerts_log_panel.has_method("open"):
		alerts_log_panel.open()
	else:
		Audit.log("top_bar", "AlertsLog not mounted — skipping open()")