class_name DiagnosticDiveScreen
extends Control

signal menu_requested

const DiveUpdate = preload("res://game/domain/dive/dive_update.gd")
const DiveAlertLevel = preload("res://game/domain/dive/dive_alert_level.gd")
const DiveTerminalReason = preload("res://game/domain/dive/dive_terminal_reason.gd")
const ReturnEstimate = preload("res://game/domain/dive/return_estimate.gd")

@onready var _status_label: Label = %StatusLabel
@onready var _tick_label: Label = %TickLabel
@onready var _battery_label: Label = %BatteryLabel
@onready var _oxygen_label: Label = %OxygenLabel
@onready var _hull_label: Label = %HullLabel
@onready var _depth_label: Label = %DepthLabel
@onready var _return_label: Label = %ReturnLabel
@onready var _alert_label: Label = %AlertLabel
@onready var _event_label: Label = %EventLabel
@onready var _menu_button: Button = %MenuButton


func _ready() -> void:
	_menu_button.pressed.connect(_on_menu_pressed)


func present(update: DiveUpdate) -> void:
	if update == null or update.snapshot == null:
		present_setup_error("Mise à jour de plongée absente")
		return
	if not update.accepted:
		_status_label.text = "ÉTAT · PAS REFUSÉ · %s" % update.rejection_reason
	else:
		_status_label.text = "ÉTAT · SIMULATION DÉTERMINISTE · 60 HZ"

	var snapshot = update.snapshot
	_tick_label.text = "SESSION %s · TICK %d" % [snapshot.session_id, snapshot.tick_sequence]
	_battery_label.text = (
		"BATTERIE  %.2f / %.2f kWh  ·  %.0f %%  ·  %.1f kW"
		% [
			snapshot.battery.remaining_kwh,
			snapshot.battery.maximum_kwh,
			snapshot.battery.ratio * 100.0,
			snapshot.battery.current_power_kw,
		]
	)
	_oxygen_label.text = (
		"OXYGÈNE  %.1f / %.1f L  ·  %.0f %%  ·  %.1f L/min  ·  %.1f min"
		% [
			snapshot.oxygen.remaining_l,
			snapshot.oxygen.maximum_l,
			snapshot.oxygen.ratio * 100.0,
			snapshot.oxygen.consumption_l_per_min,
			snapshot.oxygen.endurance_minutes,
		]
	)
	_hull_label.text = (
		"COQUE  %.1f / %.1f  ·  %.0f %%  ·  %.2f / %.2f bar recommandés"
		% [
			snapshot.hull.current_integrity,
			snapshot.hull.maximum_integrity,
			snapshot.hull.ratio * 100.0,
			snapshot.hull.exterior_pressure_bar,
			snapshot.hull.certified_pressure_bar,
		]
	)
	_depth_label.text = (
		"PROFONDEUR  %.1f m  ·  CERTIFIÉE %.1f m  ·  CRITIQUE %.1f m"
		% [
			snapshot.depth.current_m,
			snapshot.depth.certified_m,
			snapshot.depth.critical_m,
		]
	)
	_return_label.text = _format_return_estimate(snapshot.return_estimate)
	_alert_label.text = "ALERTE MAXIMALE · %s" % _alert_level_text(snapshot.alerts.maximum)
	_event_label.text = (
		"TERMINAISON · %s  ·  ÉVÉNEMENTS DU PAS · %d"
		% [_terminal_reason_text(snapshot.terminal_reason), update.events.size()]
	)


func present_setup_error(message: String) -> void:
	_status_label.text = "ÉTAT · INITIALISATION IMPOSSIBLE"
	_tick_label.text = message


func _on_menu_pressed() -> void:
	menu_requested.emit()


func _format_return_estimate(estimate: ReturnEstimate) -> String:
	match estimate.status:
		ReturnEstimate.Status.UNKNOWN:
			return "RETOUR  ·  ESTIMATION INCONNUE"
		ReturnEstimate.Status.SAFE:
			return "RETOUR  %.2f kWh requis  ·  MARGE %.2f kWh  ·  SÛR" % [
				estimate.required_kwh,
				estimate.margin_kwh,
			]
		ReturnEstimate.Status.TIGHT:
			return "RETOUR  %.2f kWh requis  ·  MARGE %.2f kWh  ·  SERRÉ" % [
				estimate.required_kwh,
				estimate.margin_kwh,
			]
		ReturnEstimate.Status.INSUFFICIENT:
			return "RETOUR  %.2f kWh requis  ·  MANQUE %.2f kWh" % [
				estimate.required_kwh,
				absf(estimate.margin_kwh),
			]
	return "RETOUR  ·  ÉTAT INCONNU"


func _alert_level_text(level: DiveAlertLevel.Value) -> String:
	match level:
		DiveAlertLevel.Value.NORMAL:
			return tr("NORMAL")
		DiveAlertLevel.Value.ATTENTION:
			return tr("ATTENTION")
		DiveAlertLevel.Value.RETURN:
			return tr("RETOUR")
		DiveAlertLevel.Value.CRITICAL:
			return tr("CRITIQUE")
		DiveAlertLevel.Value.FAILURE:
			return tr("DÉFAILLANCE")
	return tr("INCONNU")


func _terminal_reason_text(reason: DiveTerminalReason.Value) -> String:
	match reason:
		DiveTerminalReason.Value.NONE:
			return tr("EN COURS")
		DiveTerminalReason.Value.RETURNED:
			return tr("RETOUR")
		DiveTerminalReason.Value.VOLUNTARY_EJECTION:
			return tr("ÉJECTION VOLONTAIRE")
		DiveTerminalReason.Value.OXYGEN_DEPLETED:
			return tr("OXYGÈNE ÉPUISÉ")
		DiveTerminalReason.Value.HULL_DESTROYED:
			return tr("COQUE DÉTRUITE")
	return tr("INCONNU")