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use maplit::hashmap;
use once_cell::sync::Lazy;

use crate::{AbstractRefWrapper, CompiledInterpolation, Constness, ConstnessOverride, StrExt};

use super::RustNativeGeneratedElement;

impl RustNativeGeneratedElement for AbstractRefWrapper<'_, '_> {
	fn element_order(&self) -> u8 {
		10
	}

	fn element_safe_id(&self) -> String {
		let type_ref = self.type_ref();
		format!("{}-{}", type_ref.rust_module(), type_ref.rust_safe_id())
	}

	fn gen_rust(&self, _opencv_version: &str) -> String {
		static RUST: Lazy<CompiledInterpolation> = Lazy::new(
			|| include_str!("tpl/abstract_ref_wrapper/rust.tpl.rs").compile_interpolation()
		);

		let type_ref = self.type_ref().source();
		let mut rust_full = type_ref.rust_full().into_owned(); // fixme
		if rust_full.starts_with("dyn ") {
			rust_full.drain(..4);
		}
		RUST.interpolate(&hashmap! {
			"rust_full" => rust_full.into(),
			"rust_local" => type_ref.rust_local(),
			"rust_extern_mut" => type_ref.rust_extern_with_const(ConstnessOverride::Yes(Constness::Mut)),
			"rust_extern_const" => type_ref.rust_extern_with_const(ConstnessOverride::Yes(Constness::Const)),
		})
	}
}