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use glib::{value::ToValue, Value};

pub trait ToValueOption: Sized {
	type Type: Into<Self>;

	fn to_value_option(self) -> Option<Value>;
}

pub struct PrimitiveValue<T>(T);
impl<T> From<T> for PrimitiveValue<T> {
	fn from(v: T) -> Self {
		Self(v)
	}
}
impl ToValueOption for PrimitiveValue<()> {
	type Type = ();

	fn to_value_option(self) -> Option<Value> {
		None
	}
}
impl ToValueOption for PrimitiveValue<usize> {
	type Type = usize;

	#[cfg(target_pointer_width = "16")]
	fn to_value_option(self) -> Option<Value> {
		Some((self.0 as u16).to_value())
	}

	#[cfg(target_pointer_width = "32")]
	fn to_value_option(self) -> Option<Value> {
		Some((self.0 as u32).to_value())
	}

	#[cfg(target_pointer_width = "64")]
	fn to_value_option(self) -> Option<Value> {
		Some((self.0 as u64).to_value())
	}
}

impl<T: ToValue> ToValueOption for T {
	type Type = T;

	fn to_value_option(self) -> Option<Value> {
		Some(ToValue::to_value(&self))
	}
}