class_name DiveEvent
extends RefCounted

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

enum Kind {
	ALERT_LEVEL_CHANGED,
	RESOURCE_DEPLETED,
	HULL_DAMAGED,
	DIVE_TERMINATED,
}

var event_id: StringName
var kind: Kind
var tick_sequence: int
var subject: StringName
var amount: float
var previous_level: DiveAlertLevel.Value
var current_level: DiveAlertLevel.Value
var terminal_reason: DiveTerminalReason.Value


func _init(
	p_event_id: StringName,
	p_kind: Kind,
	p_tick_sequence: int,
	p_subject: StringName = &"",
	p_amount: float = 0.0,
	p_previous_level: DiveAlertLevel.Value = DiveAlertLevel.Value.NORMAL,
	p_current_level: DiveAlertLevel.Value = DiveAlertLevel.Value.NORMAL,
	p_terminal_reason: DiveTerminalReason.Value = DiveTerminalReason.Value.NONE
) -> void:
	event_id = p_event_id
	kind = p_kind
	tick_sequence = p_tick_sequence
	subject = p_subject
	amount = p_amount
	previous_level = p_previous_level
	current_level = p_current_level
	terminal_reason = p_terminal_reason


static func alert_changed(
	tick_sequence: int,
	subject: StringName,
	previous_level: DiveAlertLevel.Value,
	current_level: DiveAlertLevel.Value
):
	return new(
		_event_id(tick_sequence, &"alert", subject),
		Kind.ALERT_LEVEL_CHANGED,
		tick_sequence,
		subject,
		0.0,
		previous_level,
		current_level
	)


static func resource_depleted(tick_sequence: int, subject: StringName):
	return new(
		_event_id(tick_sequence, &"depleted", subject),
		Kind.RESOURCE_DEPLETED,
		tick_sequence,
		subject
	)


static func hull_damaged(tick_sequence: int, amount: float):
	return new(
		_event_id(tick_sequence, &"damage", &"hull"),
		Kind.HULL_DAMAGED,
		tick_sequence,
		&"hull",
		amount
	)


static func dive_terminated(
	tick_sequence: int,
	reason: DiveTerminalReason.Value
):
	return new(
		_event_id(tick_sequence, &"terminal", &"dive"),
		Kind.DIVE_TERMINATED,
		tick_sequence,
		&"dive",
		0.0,
		DiveAlertLevel.Value.NORMAL,
		DiveAlertLevel.Value.NORMAL,
		reason
	)


static func _event_id(
	tick_sequence: int,
	event_name: StringName,
	subject_name: StringName
) -> StringName:
	return StringName("%d:%s:%s" % [tick_sequence, event_name, subject_name])