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jsonrpc::{Error, Result}, - lsp_types::*, - Client, LanguageServer, -}; +use lsp_server::{Connection, ExtractError, Message, Notification, Request, RequestId}; +use lsp_types::{notification::Notification as _, request::Request as _, *}; /// Open the Wakatime web dashboard in a browser const OPEN_DASHBOARD_ACTION: &str = "open_dashboard"; @@ -25,70 +19,44 @@ const SHOW_TIME_PAST_ACTION: &str = "show_time_past"; /// Base plugin user agent const PLUGIN_USER_AGENT: &str = concat!(env!("CARGO_PKG_NAME"), "/", env!("CARGO_PKG_VERSION")); -/// Implements [`LanguageServer`] to interact with an editor -#[derive(Debug)] -pub struct Backend { - /// Interface for sending LSP notifications to the client - client: Client, +pub struct LanguageServer { + connection: Connection, - /// Editor and LS user agent for `wakatime-cli` - user_agent: RwLock, + user_agent: String, } -impl Backend { - /// Creates a new [`Backend`] +impl LanguageServer { #[must_use] - pub fn new(client: Client) -> Self { + pub fn new(connection: Connection) -> Self { Self { - client, - user_agent: RwLock::new(PLUGIN_USER_AGENT.into()), + connection, + user_agent: PLUGIN_USER_AGENT.into(), } } - #[tracing::instrument(skip_all)] - async fn on_change(&self, uri: Url, is_write: bool) { - let mut cmd = Command::new("wakatime-cli"); - - let user_agent = self.user_agent.read().await; - cmd.args(["--plugin", &user_agent]); - - cmd.args(["--entity", uri.path()]); - - // cmd.args(["--lineno", ""]); - // cmd.args(["--cursorno", ""]); - // cmd.args(["--lines-in-file", ""]); - // cmd.args(["--category", ""]); - - // cmd.args(["--alternate-project", ""]); - // cmd.args(["--project-folder", ""]); - - if is_write { - cmd.arg("--write"); + fn capabilities() -> ServerCapabilities { + ServerCapabilities { + text_document_sync: Some(TextDocumentSyncCapability::Kind(TextDocumentSyncKind::NONE)), + execute_command_provider: Some(ExecuteCommandOptions { + commands: vec![OPEN_DASHBOARD_ACTION.into(), SHOW_TIME_PAST_ACTION.into()], + work_done_progress_options: WorkDoneProgressOptions::default(), + }), + ..Default::default() } - - tracing::debug!(cmd = ?cmd.as_std()); - - match cmd.status().await { - Err(e) => tracing::error!(?e), - Ok(exit) if !exit.success() => { - tracing::error!( - "`wakatime-cli` exited with error code: {}", - exit.code().map_or("".into(), |c| c.to_string()) - ); - } - _ => {} - }; } -} -#[tower_lsp::async_trait] -impl LanguageServer for Backend { - #[tracing::instrument(skip_all)] - async fn initialize(&self, params: InitializeParams) -> Result { - if let Some(info) = params.client_info { - let mut ua = self.user_agent.write().await; + /// Entrypoint + /// + /// # Errors + /// + /// - For kindof everything that went wrong + pub fn start(&mut self) -> Result<(), Box> { + let server_capabilities = serde_json::to_value(Self::capabilities())?; + let init_params = self.connection.initialize(server_capabilities)?; + let init_params = serde_json::from_value::(init_params)?; - *ua = format!( + if let Some(info) = &init_params.client_info { + self.user_agent = format!( "{}/{} {} {}-wakatime/{}", // Editor part info.name, @@ -96,7 +64,7 @@ impl LanguageServer for Backend { .as_ref() .map_or_else(|| "unknown", |version| version), // Plugin part - PLUGIN_USER_AGENT, + self.user_agent, // Last part is the one parsed by `wakatime` servers // It follows `{editor}-wakatime/{version}` where `editor` is // registered in intern. Works when `info.name` matches what the @@ -105,89 +73,206 @@ impl LanguageServer for Backend { info.name, env!("CARGO_PKG_VERSION"), ); - }; + } - Ok(InitializeResult { - server_info: Some(ServerInfo { - name: env!("CARGO_PKG_NAME").into(), - version: Some(env!("CARGO_PKG_VERSION").into()), - }), - capabilities: ServerCapabilities { - text_document_sync: Some(TextDocumentSyncCapability::Kind( - TextDocumentSyncKind::NONE, - )), - execute_command_provider: Some(ExecuteCommandOptions { - commands: vec![OPEN_DASHBOARD_ACTION.into(), SHOW_TIME_PAST_ACTION.into()], - work_done_progress_options: WorkDoneProgressOptions::default(), - }), - ..Default::default() - }, - }) - } + self.main_loop()?; - async fn initialized(&self, _: InitializedParams) { - tracing::info!("client `{}` initialized", PLUGIN_USER_AGENT); + Ok(()) } - #[tracing::instrument(skip_all)] - async fn shutdown(&self) -> Result<()> { + fn main_loop(&self) -> Result<(), Box> { + for msg in &self.connection.receiver { + match msg { + Message::Request(req) => { + if self.connection.handle_shutdown(&req)? { + return Ok(()); + } + + self.handle_request(req)?; + + continue; + } + + Message::Notification(notification) => { + self.handle_notification(notification)?; + + continue; + } + + Message::Response(response) => { + eprintln!("{:?}", response.result); + continue; + } + } + } + Ok(()) } - async fn did_open(&self, params: DidOpenTextDocumentParams) { - self.on_change(params.text_document.uri, false).await; - } + fn handle_request(&self, req: Request) -> Result<(), Box> { + let req = match cast_r::(req) { + Ok((id, params)) => { + self.execute_command(id, ¶ms)?; + return Ok(()); + } + Err(err @ ExtractError::JsonError { .. }) => panic!("{err:?}"), + Err(ExtractError::MethodMismatch(req)) => req, + }; - async fn did_change(&self, params: DidChangeTextDocumentParams) { - self.on_change(params.text_document.uri, false).await; + let _ = req; + + Ok(()) } - async fn did_close(&self, params: DidCloseTextDocumentParams) { - self.on_change(params.text_document.uri, false).await; + fn handle_notification( + &self, + notification: Notification, + ) -> Result<(), Box> { + let notification = match cast_n::(notification) { + Ok((_id, params)) => { + self.on_change(¶ms.text_document.uri, false)?; + return Ok(()); + } + Err(err @ ExtractError::JsonError { .. }) => { + eprintln!("{err:?}"); + return Ok(()); + } + Err(ExtractError::MethodMismatch(req)) => req, + }; + + let notification = match cast_n::(notification) { + Ok((_id, params)) => { + self.on_change(¶ms.text_document.uri, false)?; + return Ok(()); + } + Err(err @ ExtractError::JsonError { .. }) => panic!("{err:?}"), + Err(ExtractError::MethodMismatch(req)) => req, + }; + + let notification = match cast_n::(notification) { + Ok((_id, params)) => { + self.on_change(¶ms.text_document.uri, false)?; + return Ok(()); + } + Err(err @ ExtractError::JsonError { .. }) => panic!("{err:?}"), + Err(ExtractError::MethodMismatch(req)) => req, + }; + + let notification = match cast_n::(notification) { + Ok((_id, params)) => { + self.on_change(¶ms.text_document.uri, true)?; + return Ok(()); + } + Err(err @ ExtractError::JsonError { .. }) => panic!("{err:?}"), + Err(ExtractError::MethodMismatch(req)) => req, + }; + + let _ = notification; + + Ok(()) } - async fn did_save(&self, params: DidSaveTextDocumentParams) { - self.on_change(params.text_document.uri, true).await; + fn on_change(&self, uri: &Uri, is_write: bool) -> Result<(), Box> { + let mut cmd = std::process::Command::new("wakatime-cli"); + + cmd.args(["--plugin", &self.user_agent]); + + cmd.args(["--entity", uri.path().as_str()]); + + // cmd.args(["--lineno", ""]); + // cmd.args(["--cursorno", ""]); + // cmd.args(["--lines-in-file", ""]); + // cmd.args(["--category", ""]); + + // cmd.args(["--alternate-project", ""]); + // cmd.args(["--project-folder", ""]); + + if is_write { + cmd.arg("--write"); + } + + match cmd.status() { + Err(err) => Err(err.into()), + Ok(exit) => { + assert!( + exit.success(), + "`wakatime-cli` exited with error code: {}", + exit.code().map_or("".into(), |c| c.to_string()) + ); + Ok(()) + } + } } - async fn execute_command(&self, params: ExecuteCommandParams) -> Result> { + fn execute_command( + &self, + id: RequestId, + params: &ExecuteCommandParams, + ) -> Result<(), Box> { match params.command.as_str() { OPEN_DASHBOARD_ACTION => { - self.client - .show_document(ShowDocumentParams { - uri: "https://wakatime.com/dashboard" - .try_into() - .expect("the url is valid"), - external: Some(true), - take_focus: None, - selection: None, - }) - .await?; + let show_documents_params = ShowDocumentParams { + uri: "https://wakatime.com/dashboard" + .parse() + .expect("url is valid"), + external: Some(true), + take_focus: None, + selection: None, + }; + + let req = Message::Request(Request::new( + id, + request::ShowMessageRequest::METHOD.into(), + show_documents_params, + )); + self.connection.sender.send(req)?; } SHOW_TIME_PAST_ACTION => { - let output = Command::new("wakatime-cli") + let output = std::process::Command::new("wakatime-cli") .arg("--today") - .output() - .await - .map_err(|e| { - tracing::error!("While executing `wakatime-cli`: {e}"); - Error::internal_error() - })?; - - let Some(Ok(time_past)) = output.stdout.lines().next() else { - tracing::error!(""); - return Err(Error::internal_error()); - }; + .output()?; - self.client.show_message(MessageType::INFO, time_past).await; + let time_past = String::from_utf8_lossy(&output.stdout); + + let notification = Message::Notification(Notification::new( + notification::LogMessage::METHOD.into(), + LogMessageParams { + typ: MessageType::INFO, + message: time_past.to_string(), + }, + )); + self.connection.sender.send(notification)?; } unknown_cmd_id => { let message = format!("Unknown workspace command received: `{unknown_cmd_id}`"); - tracing::error!(message); - self.client.log_message(MessageType::ERROR, &message).await; + + let notification = Message::Notification(Notification::new( + notification::LogMessage::METHOD.into(), + LogMessageParams { + typ: MessageType::ERROR, + message, + }, + )); + self.connection.sender.send(notification)?; } }; - Ok(None) + Ok(()) } } + +fn cast_r(req: Request) -> Result<(RequestId, R::Params), ExtractError> +where + R: lsp_types::request::Request, + R::Params: serde::de::DeserializeOwned, +{ + req.extract(R::METHOD) +} + +fn cast_n(req: Notification) -> Result<(RequestId, N::Params), ExtractError> +where + N: lsp_types::notification::Notification, + N::Params: serde::de::DeserializeOwned, +{ + req.extract(N::METHOD) +} diff --git a/src/main.rs b/src/main.rs index 124aa54..0e9105f 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,50 +1,16 @@ //! Wakatime LS -use std::panic::{self, PanicHookInfo}; -use tower_lsp::{LspService, Server}; -use tracing_subscriber::{fmt::format::FmtSpan, EnvFilter}; -use wakatime_ls::Backend; +use lsp_server::Connection; +use wakatime_ls::LanguageServer; -/// Transfers panic messages to the tracing logging pipeline -fn tracing_panic_hook(panic_info: &PanicHookInfo) { - let payload = panic_info - .payload() - .downcast_ref::<&'static str>() - .map_or_else( - || { - panic_info - .payload() - .downcast_ref::() - .map_or("Box", |s| &s[..]) - }, - |s| *s, - ); +fn main() -> Result<(), Box> { + // Create the transport. Includes the stdio (stdin and stdout) versions but this could + // also be implemented to use sockets or HTTP. + let (connection, io_threads) = Connection::stdio(); - let location = panic_info.location().map(ToString::to_string); + LanguageServer::new(connection).start()?; - tracing::error!( - panic.payload = payload, - panic.location = location, - "A panic occurred", - ); -} - -// We really don't need much power with what we are doing -#[tokio::main(flavor = "current_thread")] -async fn main() { - panic::set_hook(Box::new(tracing_panic_hook)); - - let file_appender = tracing_appender::rolling::never("/tmp", "wakatime-ls.log"); - let (non_blocking, _guard) = tracing_appender::non_blocking(file_appender); - tracing_subscriber::fmt() - .with_writer(non_blocking) - .with_span_events(FmtSpan::NEW) - .with_env_filter(EnvFilter::from_default_env()) - .init(); - - let stdin = tokio::io::stdin(); - let stdout = tokio::io::stdout(); + io_threads.join()?; - let (service, socket) = LspService::new(Backend::new); - Server::new(stdin, stdout, socket).serve(service).await; + Ok(()) }