golgi/src/lib.rs_lifetimes

mod error;
mod utils;

use async_std::net::TcpStream;
//use futures::io::{self, AsyncRead as Read, AsyncWrite as Write};
use kuska_handshake::async_std::{BoxStream, BoxStreamRead, BoxStreamWrite};
use kuska_handshake::HandshakeComplete;
use kuska_sodiumoxide::crypto::{auth, sign::ed25519};
use kuska_ssb::api::{dto::CreateHistoryStreamIn, ApiCaller};
use kuska_ssb::discovery;
use kuska_ssb::keystore;
use kuska_ssb::keystore::OwnedIdentity;
use kuska_ssb::rpc::{RpcReader, RpcWriter};

use crate::error::GolgiError;

//struct Sbot<R: Read + std::marker::Unpin, W: Write + std::marker::Unpin> {
struct Sbot<'a> {
    id: String,
    public_key: ed25519::PublicKey,
    private_key: ed25519::SecretKey,
    address: String,
    // aka caps key (scuttleverse identifier)
    network_id: auth::Key,
    //socket: TcpStream,
    //client: ApiCaller<W>,
    client: ApiCaller<TcpStream>,
    //rpc_reader: RpcReader<R>,
    rpc_reader: RpcReader<&'a TcpStream>,
}

//impl<R: Read + std::marker::Unpin, W: Write + std::marker::Unpin> Sbot<R, W> {
//impl Sbot<'static> {
impl Sbot<'_> {
    async fn init(
        ip_port: Option<String>,
        net_id: Option<String>,
    ) -> Result<Sbot<'static>, GolgiError> {
        let address;
        if ip_port.is_none() {
            // set default
            address = "127.0.0.1:8008".to_string();
        } else {
            address = ip_port.unwrap().to_string();
        }

        let network_id;
        if net_id.is_none() {
            network_id = discovery::ssb_net_id();
        } else {
            network_id = auth::Key::from_slice(&hex::decode(net_id.unwrap()).unwrap()).unwrap();
        }

        let OwnedIdentity { pk, sk, id } = keystore::from_gosbot_local()
            .await
            .expect("couldn't read local secret");

        let socket = TcpStream::connect(&address)
            .await
            .map_err(|source| GolgiError::Io {
                source,
                context: "socket error; failed to initiate tcp stream connection".to_string(),
            })?;

        let handshake = kuska_handshake::async_std::handshake_client(
            &mut &socket,
            network_id.clone(),
            pk,
            sk.clone(),
            pk,
        )
        .await
        .map_err(|err| GolgiError::Handshake(err))?;

        let (box_stream_read, box_stream_write) =
            BoxStream::from_handshake(socket, socket, handshake, 0x8000).split_read_write();

        let rpc_reader = RpcReader::new(box_stream_read);
        let client = ApiCaller::new(RpcWriter::new(box_stream_write));

        Ok(Self {
            id,
            public_key: pk,
            private_key: sk,
            address,
            network_id,
            client: client,
            rpc_reader: rpc_reader,
        })
    }
}

pub async fn run() -> Result<(), GolgiError> {
    let sbot_client = Sbot::init(None, None);
    /*
    // read go-sbot id details from `/.ssb-go/secret
    let OwnedIdentity { pk, sk, id } = keystore::from_gosbot_local()
        .await
        .expect("read local secret");
    println!("connecting with identity {}", id);

    // set the public key, ip and port for the sbot instance
    let sbot_public_key = "a0SsCiZkBu6qaQ6tWVvzQPDSzvO0JqMAqPXt0LBIl30=".to_string();
    let server_pk =
        ed25519::PublicKey::from_slice(&base64::decode(&sbot_public_key)?).expect("bad public key");
    let server_ipport = "127.0.0.1:8008".to_string();

    // connect to the local go-sbot instance
    let mut socket = TcpStream::connect(server_ipport)
        .await
        .map_err(|source| GolgiError::Io {
            source,
            context: "socket error; failed to initiate tcp stream connection".to_string(),
        })?;

    // initiate secret handshake
    let handshake = kuska_handshake::async_std::handshake_client(
        &mut socket,
        discovery::ssb_net_id(),
        pk,
        sk.clone(),
        server_pk,
    )
    .await
    .expect("handshake error");

    println!("💃 handshake complete");

    // call `whoami`
    let (box_stream_read, box_stream_write) =
        BoxStream::from_handshake(&socket, &socket, handshake, 0x8000).split_read_write();

    let mut rpc_reader = RpcReader::new(box_stream_read);
    let mut client = ApiCaller::new(RpcWriter::new(box_stream_write));

    let req_id = client.whoami_req_send().await?;
    let whoami = match utils::get_async(&mut rpc_reader, req_id, utils::whoami_res_parse).await {
        Ok(res) => {
            println!("😊 server says hello to {}", res.id);
            id
        }
        Err(err) => {
            if !err
                .to_string()
                .contains("method:whoami is not in list of allowed methods")
            {
                println!("Cannot ask for whoami {}", err);
            }
            id
        }
    };

    // call `createhistorystream`
    let args = CreateHistoryStreamIn::new(whoami.clone());
    // TODO: this should return an error if the args are wrong but it doesn't?
    let req_id = client.create_history_stream_req_send(&args).await?;
    utils::print_source_until_eof(&mut rpc_reader, req_id, utils::feed_res_parse).await?;
    */

    Ok(())
}