# datetime.gd
class_name DateTime
extends Resource

@export var _unix_time: float = 0.0


static func now() -> DateTime:
	var dt = DateTime.new()
	dt._unix_time = Time.get_unix_time_from_system()
	return dt


static func from_unix(unix_seconds: float) -> DateTime:
	var dt = DateTime.new()
	dt._unix_time = unix_seconds
	return dt


static func from_string(input: String) -> DateTime:
	var s := input.strip_edges()
	if s.ends_with("Z"):
		s = s.substr(0, s.length() - 1)
	var unix := Time.get_unix_time_from_datetime_string(s)
	if s.find("-") == -1 or s.find(":") == -1:
		push_error("Invalid datetime string format: %s" % input)
		return null
	var dt = DateTime.new()
	dt._unix_time = unix
	return dt


func to_unix() -> float:
	return _unix_time


func _to_string() -> String:
	var dict := Time.get_datetime_dict_from_unix_time(_unix_time)
	return "%04d-%02d-%02dT%02d:%02d:%02dZ" % [
		dict.year, dict.month, dict.day,
		dict.hour, dict.minute, dict.second
	]