use std::io;

use petgraph::Graph;
use serde::{Deserialize, Serialize};

use super::{structure::{RSlabel, RSsystem}, translator::Translator};

#[derive(Serialize, Deserialize)]
struct GraphAndTranslator {
    graph: Graph<RSsystem, RSlabel>,
    translator: Translator
}

pub fn sr<W>(writer: W, graph: &Graph<RSsystem, RSlabel>, translator: &Translator) -> Result<(), serde_cbor_2::Error>
where
    W: io::Write,
{
    serde_cbor_2::to_writer(writer,
			    &GraphAndTranslator {
				graph: graph.clone(),
				translator: translator.clone()
			    })
}

pub fn dsr<R>(
    reader: R
) -> Result<(Graph<RSsystem, RSlabel>, Translator), serde_cbor_2::Error>
where
    R: io::Read,
{
    let gat: GraphAndTranslator = serde_cbor_2::from_reader(reader)?;
    Ok((gat.graph, gat.translator))
}