Get channel from nvim.get_api_info().

I don't know the history behind the channel list parsing, but this seems
to be a lot cleaner. There also seems to be a race condition in the
parsing approach, which often causes the channel to not be detected when
reconnecting to a remote Neovim instance.

src/bridge/events.rs

@@ -276,48 +276,6 @@ pub enum RedrawEvent {
     },
 }
 
-#[derive(Debug)]
-pub enum ChannelStreamType {
-    Stdio,
-    Stderr,
-    Socket,
-    Job,
-}
-
-impl Default for ChannelStreamType {
-    fn default() -> Self {
-        Self::Stdio
-    }
-}
-
-#[derive(Debug)]
-pub enum ChannelMode {
-    Bytes,
-    Terminal,
-    Rpc,
-}
-
-impl Default for ChannelMode {
-    fn default() -> Self {
-        Self::Bytes
-    }
-}
-
-#[derive(Debug, Default)]
-pub struct ClientInfo {
-    pub name: String,
-}
-
-#[derive(Debug, Default)]
-pub struct ChannelInfo {
-    pub id: u64,
-    pub stream: ChannelStreamType,
-    pub mode: ChannelMode,
-    pub pty: Option<String>,
-    pub buffer: Option<String>,
-    pub client: Option<ClientInfo>,
-}
-
 fn unpack_color(packed_color: u64) -> Color4f {
     let packed_color = packed_color as u32;
     let r = ((packed_color & 0x00ff_0000) >> 16) as f32;
@@ -919,74 +877,3 @@ pub fn parse_redraw_event(event_value: Value) -> Result<Vec<RedrawEvent>> {
 
     Ok(parsed_events)
 }
-
-pub fn parse_channel_stream_type(channel_stream_value: Value) -> Result<ChannelStreamType> {
-    match parse_string(channel_stream_value)?.as_ref() {
-        "stdio" => Ok(ChannelStreamType::Stdio),
-        "stderr" => Ok(ChannelStreamType::Stderr),
-        "socket" => Ok(ChannelStreamType::Socket),
-        "job" => Ok(ChannelStreamType::Job),
-        stream_type => Err(ParseError::Format(format!("{:?}", stream_type))),
-    }
-}
-
-pub fn parse_channel_mode(channel_mode_value: Value) -> Result<ChannelMode> {
-    match parse_string(channel_mode_value)?.as_ref() {
-        "bytes" => Ok(ChannelMode::Bytes),
-        "terminal" => Ok(ChannelMode::Terminal),
-        "rpc" => Ok(ChannelMode::Rpc),
-        channel_mode => Err(ParseError::Format(format!("{:?}", channel_mode))),
-    }
-}
-
-pub fn parse_client_info(client_info_value: Value) -> Result<ClientInfo> {
-    let client_info_map = parse_map(client_info_value)?;
-
-    let mut client_info = ClientInfo::default();
-
-    for info_property in client_info_map {
-        if let (Value::String(name), value) = info_property {
-            match (name.as_str().unwrap(), value) {
-                ("name", name) => client_info.name = parse_string(name)?,
-                _ => debug!("Ignored client type property: {}", name),
-            }
-        } else {
-            debug!("Invalid client info format");
-        }
-    }
-
-    Ok(client_info)
-}
-
-pub fn parse_channel_info(channel_value: Value) -> Result<ChannelInfo> {
-    let channel_map = parse_map(channel_value)?;
-
-    let mut channel_info = ChannelInfo::default();
-
-    for channel_property in channel_map {
-        if let (Value::String(name), value) = channel_property {
-            match (name.as_str().unwrap(), value) {
-                ("id", channel_id) => channel_info.id = parse_u64(channel_id)?,
-                ("stream", stream) => channel_info.stream = parse_channel_stream_type(stream)?,
-                ("mode", mode) => channel_info.mode = parse_channel_mode(mode)?,
-                ("pty", pty) => channel_info.pty = Some(parse_string(pty)?),
-                ("buffer", buffer) => channel_info.buffer = Some(parse_string(buffer)?),
-                ("client", client_info) => {
-                    channel_info.client = Some(parse_client_info(client_info)?)
-                }
-                _ => debug!("Ignored channel info property: {}", name),
-            }
-        } else {
-            debug!("Invalid channel info format");
-        }
-    }
-
-    Ok(channel_info)
-}
-
-pub fn parse_channel_list(channel_infos: Vec<Value>) -> Result<Vec<ChannelInfo>> {
-    channel_infos
-        .into_iter()
-        .map(parse_channel_info)
-        .collect::<Result<Vec<ChannelInfo>>>()
-}

src/bridge/setup.rs

@@ -3,7 +3,7 @@ use nvim_rs::Neovim;
 use rmpv::Value;
 
 use crate::{
-    bridge::{events::*, TxWrapper},
+    bridge::TxWrapper,
     error_handling::ResultPanicExplanation,
 };
 
@@ -84,20 +84,10 @@ pub async fn setup_neovide_specific_state(nvim: &Neovim<TxWrapper>, is_remote: b
 
     // Retrieve the channel number for communicating with neovide
     let neovide_channel: Option<u64> = nvim
-        .list_chans()
+        .get_api_info()
         .await
         .ok()
-        .and_then(|channel_values| parse_channel_list(channel_values).ok())
+        .and_then(|info| info[0].as_u64());
-        .and_then(|channel_list| {
-            channel_list.iter().find_map(|channel| match channel {
-                ChannelInfo {
-                    id,
-                    client: Some(ClientInfo { name, .. }),
-                    ..
-                } if name == "neovide" => Some(*id),
-                _ => None,
-            })
-        });
 
     if let Some(neovide_channel) = neovide_channel {
         // Record the channel to the log