Updated Javascript Glue with Napi

Co-authored-by: alemi.dev <me@alemi.dev>

Cargo.toml

@@ -42,8 +42,8 @@ derive_more = { version = "0.99.17", optional = true }
 
 # glue (js)
 rmpv = { version = "1", optional = true }
-napi = { version = "2", features = ["full"], optional = true } 
-napi-derive = { version="2",  optional = true}
+napi = { version = "2.16", features = ["full"], optional = true } 
+napi-derive = { version="2.16",  optional = true}
 futures = { version = "0.3.28", optional = true }
 
 # glue (python)
@@ -60,7 +60,7 @@ napi-build = { version = "2", optional = true }
 pyo3-build-config = { version = "0.19.2", optional = true }
 
 [features]
-default = []
+default = ["js"]
 lua = ["mlua", "derive_more", "lazy_static", "tracing-subscriber"]
 java = ["lazy_static", "jni", "tracing-subscriber"]
 java-artifact = ["java"] # also builds the jar

src/api/change.rs

@@ -30,11 +30,15 @@ pub struct Op(pub(crate) woot::crdt::Op);
 /// to delete a the fourth character we should send a
 ///     `TextChange { span: 3..4, content: "".into() }`
 ///
+
 #[derive(Clone, Debug, Default)]
 #[cfg_attr(feature = "python", pyo3::pyclass)]
+#[cfg_attr(feature = "js", napi_derive::napi(object))]
 pub struct TextChange {
-	/// range of text change, as char indexes in buffer previous state
-	pub span: std::ops::Range<usize>,
+	/// range start of text change, as char indexes in buffer previous state
+	pub start: u32,
+	/// range end of text change, as char indexes in buffer previous state
+	pub end: u32,
 	/// new content of text inside span
 	pub content: String,
 }
@@ -65,11 +69,16 @@ impl TextChange {
 		let end_after = after.len() - end;
 
 		TextChange {
-			span: start..end_before,
+			start: start as u32,
+			end: end_before as u32,
 			content: after[start..end_after].to_string(),
 		}
 	}
 
+	pub fn span(&self) -> std::ops::Range<usize> {
+		self.start as usize .. self.end as usize
+	}
+
 	/// consume the [TextChange], transforming it into a Vec of [Op]
 	pub fn transform(self, woot: &Woot) -> WootResult<Vec<Op>> {
 		let mut out = Vec::new();
@@ -77,19 +86,19 @@ impl TextChange {
 			return Ok(out);
 		} // no-op
 		let view = woot.view();
-		let Some(span) = view.get(self.span.clone()) else {
+		let Some(span) = view.get(self.span()) else {
 			return Err(crate::woot::WootError::OutOfBounds);
 		};
 		let diff = similar::TextDiff::from_chars(span, &self.content);
 		for (i, diff) in diff.iter_all_changes().enumerate() {
 			match diff.tag() {
 				similar::ChangeTag::Equal => {}
-				similar::ChangeTag::Delete => match woot.delete_one(self.span.start + i) {
+				similar::ChangeTag::Delete => match woot.delete_one(self.span().start + i) {
 					Err(e) => tracing::error!("could not create deletion: {}", e),
 					Ok(op) => out.push(Op(op)),
 				},
 				similar::ChangeTag::Insert => {
-					match woot.insert(self.span.start + i, diff.value()) {
+					match woot.insert(self.span().start + i, diff.value()) {
 						Ok(ops) => {
 							for op in ops {
 								out.push(Op(op))
@@ -105,7 +114,7 @@ impl TextChange {
 
 	/// returns true if this TextChange deletes existing text
 	pub fn is_deletion(&self) -> bool {
-		!self.span.is_empty()
+		!self.span().is_empty()
 	}
 
 	/// returns true if this TextChange adds new text
@@ -120,9 +129,9 @@ impl TextChange {
 
 	/// applies this text change to given text, returning a new string
 	pub fn apply(&self, txt: &str) -> String {
-		let pre_index = std::cmp::min(self.span.start, txt.len());
+		let pre_index = std::cmp::min(self.span().start, txt.len());
 		let pre = txt.get(..pre_index).unwrap_or("").to_string();
-		let post = txt.get(self.span.end..).unwrap_or("").to_string();
+		let post = txt.get(self.span().end..).unwrap_or("").to_string();
 		format!("{}{}{}", pre, self.content, post)
 	}
 
@@ -144,7 +153,7 @@ mod tests {
 			"sphinx of black quartz, judge my vow",
 			"sphinx of quartz, judge my vow",
 		);
-		assert_eq!(change.span, 10..16);
+		assert_eq!(change.span(), 10..16);
 		assert_eq!(change.content, "");
 	}
 
@@ -154,7 +163,7 @@ mod tests {
 			"sphinx of quartz, judge my vow",
 			"sphinx of black quartz, judge my vow",
 		);
-		assert_eq!(change.span, 10..10);
+		assert_eq!(change.span(), 10..10);
 		assert_eq!(change.content, "black ");
 	}
 
@@ -164,14 +173,14 @@ mod tests {
 			"sphinx of black quartz, judge my vow",
 			"sphinx who watches the desert, judge my vow",
 		);
-		assert_eq!(change.span, 7..22);
+		assert_eq!(change.span(), 7..22);
 		assert_eq!(change.content, "who watches the desert");
 	}
 
 	#[test]
 	fn textchange_apply_works_for_insertions() {
 		let change = super::TextChange {
-			span: 5..5,
+			start: 5, end: 5,
 			content: " cruel".to_string(),
 		};
 		let result = change.apply("hello world!");
@@ -181,7 +190,7 @@ mod tests {
 	#[test]
 	fn textchange_apply_works_for_deletions() {
 		let change = super::TextChange {
-			span: 5..11,
+			start: 5, end: 11,
 			content: "".to_string(),
 		};
 		let result = change.apply("hello cruel world!");
@@ -191,7 +200,7 @@ mod tests {
 	#[test]
 	fn textchange_apply_works_for_replacements() {
 		let change = super::TextChange {
-			span: 5..11,
+			start: 5, end: 11,
 			content: " not very pleasant".to_string(),
 		};
 		let result = change.apply("hello cruel world!");
@@ -201,7 +210,7 @@ mod tests {
 	#[test]
 	fn textchange_apply_never_panics() {
 		let change = super::TextChange {
-			span: 100..110,
+			start: 100, end: 110,
 			content: "a very long string \n which totally matters".to_string(),
 		};
 		let result = change.apply("a short text");
@@ -220,7 +229,7 @@ mod tests {
 	#[test]
 	fn empty_textchange_doesnt_alter_buffer() {
 		let change = super::TextChange {
-			span: 42..42,
+			start: 42, end: 42,
 			content: "".to_string(),
 		};
 		let result = change.apply("some important text");

src/buffer/controller.rs

@@ -22,6 +22,7 @@ use crate::api::TextChange;
 /// upon dropping this handle will stop the associated worker
 #[derive(Debug, Clone)]
 #[cfg_attr(feature = "python", pyo3::pyclass)]
+#[cfg_attr(feature = "js", napi_derive::napi)]
 pub struct BufferController(Arc<BufferControllerInner>);
 
 #[derive(Debug)]

src/cursor/controller.rs

@@ -30,6 +30,7 @@ use codemp_proto::cursor::{CursorEvent, CursorPosition};
 /// upon dropping this handle will stop the associated worker
 #[derive(Debug, Clone)]
 #[cfg_attr(feature = "python", pyo3::pyclass)]
+#[cfg_attr(feature = "js", napi_derive::napi)]
 pub struct CursorController(Arc<CursorControllerInner>);
 
 #[derive(Debug)]

src/ffi/js/buffer.rs

@@ -1,56 +1,25 @@
 use std::sync::Arc;
 use napi::threadsafe_function::{ErrorStrategy::Fatal, ThreadSafeCallContext, ThreadsafeFunction, ThreadsafeFunctionCallMode};
 use napi_derive::napi;
-use crate::api::Controller;
+use crate::api::TextChange;
 use crate::ffi::js::JsCodempError;
+use crate::api::Controller;
+use crate::prelude::*;
 
-/// BUFFER
-#[napi(object)]
-pub struct JsTextChange {
-	pub span: JsRange,
-	pub content: String,
-}
 
-#[napi(object)]
-pub struct JsRange{
-	pub start: i32,
-	pub end: i32,
-}
 
-impl From::<crate::api::TextChange> for JsTextChange {
-	fn from(value: crate::api::TextChange) -> Self {
-		JsTextChange {
-			// TODO how is x.. represented ? span.end can never be None
-			span: JsRange { start: value.span.start as i32, end: value.span.end as i32 },
-			content: value.content,
+impl From<crate::Error> for napi::Error {
+	fn from(value: crate::Error) -> Self {
+		let msg = format!("{value}");
+		match value {
+			crate::Error::Deadlocked => napi::Error::new(napi::Status::WouldDeadlock, msg),
+			_ => napi::Error::new(napi::Status::GenericFailure, msg),
 		}
 	}
 }
 
-
-impl From::<Arc<crate::buffer::Controller>> for JsBufferController {
-	fn from(value: Arc<crate::buffer::Controller>) -> Self {
-		JsBufferController(value)
-	}
-}
-
-
 #[napi]
-pub struct JsBufferController(Arc<crate::buffer::Controller>);
-
-
-/*#[napi]
-pub fn delta(string : String, start: i64, txt: String, end: i64 ) -> Option<JsCodempOperationSeq> {
-	Some(JsCodempOperationSeq(string.diff(start as usize, &txt, end as usize)?))
-}*/
-
-
-
-
-
-
-#[napi]
-impl JsBufferController {
+impl CodempBufferController {
 
 
 	#[napi(ts_args_type = "fun: (event: JsTextChange) => void")]
@@ -58,10 +27,10 @@ impl JsBufferController {
 		let tsfn : ThreadsafeFunction<crate::api::TextChange, Fatal> = 
 		fun.create_threadsafe_function(0,
 			|ctx : ThreadSafeCallContext<crate::api::TextChange>| {
-				Ok(vec![JsTextChange::from(ctx.value)])
+				Ok(vec![ctx.value])
 			}
 		)?;
-		let _controller = self.0.clone();
+		let _controller = self.clone();
 		tokio::spawn(async move {
 			//tokio::time::sleep(std::time::Duration::from_secs(1)).await;
 			loop {
@@ -79,32 +48,13 @@ impl JsBufferController {
 	}
 
 
-	#[napi]
-	pub fn content(&self) -> String {
-		self.0.content()
+	#[napi(js_name = "recv")]
+	pub async fn jsrecv(&self) -> napi::Result<TextChange> {
+		Ok(self.recv().await?.into())
 	}
 
 	#[napi]
-	pub fn get_name(&self) -> String {
-		self.0.name().to_string()
-	}
-
-	#[napi]
-	pub async fn recv(&self) -> napi::Result<JsTextChange> {
-		Ok(
-			self.0.recv().await
-				.map_err(|e| napi::Error::from(JsCodempError(e)))?
-				.into()
-		)
-	}
-
-	#[napi]
-	pub fn send(&self, op: JsTextChange) -> napi::Result<()> {
-		// TODO might be nice to take ownership of the opseq
-		let new_text_change = crate::api::TextChange {
-			span: op.span.start as usize .. op.span.end as usize,
-			content: op.content,
-		};
-		Ok(self.0.send(new_text_change).map_err(JsCodempError)?)
+	pub fn send(&self, op: TextChange) -> napi::Result<()> {
+		Ok(self.send(op)?)
 	}
 }

src/ffi/js/client.rs

@@ -1,6 +1,5 @@
 use napi_derive::napi;
 use crate::ffi::js::JsCodempError;
-use crate::ffi::js::workspace::JsWorkspace;
 
 #[napi]
 /// main codemp client session
@@ -10,8 +9,7 @@ pub struct JsCodempClient(tokio::sync::RwLock<crate::Client>);
 /// connect to codemp servers and return a client session
 pub async fn connect(addr: Option<String>) -> napi::Result<JsCodempClient>{
 	let client = crate::Client::new(addr.as_deref().unwrap_or("http://codemp.alemi.dev:50053"))
-		.await
-		.map_err(JsCodempError)?;
+		.await?;
 
 	Ok(JsCodempClient(tokio::sync::RwLock::new(client)))
 }
@@ -21,14 +19,14 @@ impl JsCodempClient {
 	#[napi]
 	/// login against AuthService with provided credentials, optionally requesting access to a workspace
 	pub async fn login(&self, username: String, password: String, workspace_id: Option<String>) -> napi::Result<()> {
-		self.0.read().await.login(username, password, workspace_id).await.map_err(JsCodempError)?;
+		self.0.read().await.login(username, password, workspace_id).await?;
 		Ok(())
 	}
 
 	#[napi]
 	/// join workspace with given id (will start its cursor controller)
 	pub async fn join_workspace(&self, workspace: String) -> napi::Result<JsWorkspace> {
-		Ok(JsWorkspace::from(self.0.write().await.join_workspace(&workspace).await.map_err(JsCodempError)?))
+		Ok(JsWorkspace::from(self.0.write().await.join_workspace(&workspace).await?))
 	}
 
 	#[napi]

src/ffi/js/cursor.rs

@@ -3,34 +3,64 @@ use napi_derive::napi;
 use uuid::Uuid;
 use napi::threadsafe_function::{ThreadsafeFunction, ThreadSafeCallContext, ThreadsafeFunctionCallMode, ErrorStrategy};
 use crate::api::Controller;
-use crate::ffi::js::JsCodempError;
+use crate::prelude::*;
 
-#[napi]
-pub struct JsCursorController(Arc<crate::cursor::Controller>);
 
-impl From::<Arc<crate::cursor::Controller>> for JsCursorController {
-	fn from(value: Arc<crate::cursor::Controller>) -> Self {
-		JsCursorController(value)
+
+
+#[napi(js_name = "Cursor")]
+pub struct JsCursor {
+	/// range of text change, as char indexes in buffer previous state
+	pub start_row: i32,
+	pub start_col: i32,
+	pub end_row: i32,
+	pub end_col: i32,
+	pub buffer: String,
+	pub user: Option<String>,
+}
+
+impl From<JsCursor> for CodempCursor {
+	fn from(value: JsCursor) -> Self {
+		CodempCursor {
+			start : (value.start_row, value.start_col),
+			end:  (value.end_row, value.end_col),
+			buffer: value.buffer,
+			user: value.user.map(|x| uuid::Uuid::parse_str(&x).expect("invalid uuid")),
+		}
+	}
+}
+impl From<CodempCursor> for JsCursor {
+	fn from(value: CodempCursor) -> Self {
+		JsCursor {
+			start_row : value.start.0,
+			start_col : value.start.1,
+			end_row : value.end.0,
+			end_col: value.end.1,
+			buffer: value.buffer,
+			user: value.user.map(|x| x.to_string())
+		}
+		
 	}
 }
 
+
 #[napi]
-impl JsCursorController {
+impl CodempCursorController {
 
 	#[napi(ts_args_type = "fun: (event: JsCursorEvent) => void")]
 	pub fn callback(&self, fun: napi::JsFunction) -> napi::Result<()>{ 
-		let tsfn : ThreadsafeFunction<codemp_proto::cursor::CursorEvent, ErrorStrategy::Fatal> = 
+		let tsfn : ThreadsafeFunction<JsCursor, ErrorStrategy::Fatal> = 
 		fun.create_threadsafe_function(0,
-			|ctx : ThreadSafeCallContext<codemp_proto::cursor::CursorEvent>| {
-				Ok(vec![JsCursorEvent::from(ctx.value)])
+			|ctx : ThreadSafeCallContext<JsCursor>| {
+				Ok(vec![ctx.value])
 			}
 		)?;
-		let _controller = self.0.clone();
+		let _controller = self.clone();
 		tokio::spawn(async move {
 			loop {
 				match _controller.recv().await {
 					Ok(event) => {
-						tsfn.call(event.clone(), ThreadsafeFunctionCallMode::NonBlocking); //check this shit with tracing also we could use Ok(event) to get the error
+						tsfn.call(event.into(), ThreadsafeFunctionCallMode::NonBlocking); //check this shit with tracing also we could use Ok(event) to get the error
 					},
 					Err(crate::Error::Deadlocked) => continue,
 					Err(e) => break tracing::warn!("error receiving: {}", e),
@@ -41,13 +71,8 @@ impl JsCursorController {
 	}
 
 	#[napi]
-	pub fn send(&self, buffer: String, start: (i32, i32), end: (i32, i32)) -> napi::Result<()> {
-		let pos = codemp_proto::cursor::CursorPosition {
-			buffer: buffer.into(),
-			start: codemp_proto::cursor::RowCol::from(start),
-			end: codemp_proto::cursor::RowCol::from(end),
-		};
-		Ok(self.0.send(pos).map_err(JsCodempError)?)
+	pub fn send(&self, pos: &CodempCursorController) -> napi::Result<()> {
+		Ok(self.send(pos)?)
 	}
 }
 

src/ffi/js/workspace.rs

@@ -1,51 +1,39 @@
 use std::sync::Arc;
 
 use napi_derive::napi;
-
-use crate::ffi::js::{JsCodempError, buffer::JsBufferController, cursor::JsCursorController};
+use crate::prelude::*;
 
 
 #[napi]
-/// a reference to a codemp workspace
-pub struct JsWorkspace(Arc<crate::Workspace>);
-
-impl From<Arc<crate::Workspace>> for JsWorkspace {
-	fn from(value: Arc<crate::Workspace>) -> Self {
-		JsWorkspace(value)
-	}
-}
-
-#[napi]
-impl JsWorkspace {
-
-	#[napi]
-	pub fn id(&self) -> String {
-		self.0.id()
+impl CodempWorkspace {
+	#[napi(js_name = "id")]
+	pub fn js_id(&self) -> String {
+		self.id()
 	}
 	
-	#[napi]
-	pub fn filetree(&self) -> Vec<String> {
-		self.0.filetree()
+	#[napi(js_name = "filetree")]
+	pub fn js_filetree(&self) -> Vec<String> {
+		self.filetree()
 	}
 
-	#[napi]
-	pub fn cursor(&self) -> JsCursorController {
-		JsCursorController::from(self.0.cursor())
+	#[napi(js_name = "cursor")]
+	pub fn js_cursor(&self) -> CodempCursorController {
+		self.cursor()
 	}
 
-	#[napi]
-	pub fn buffer_by_name(&self, path: String) -> Option<JsBufferController> {
-		self.0.buffer_by_name(&path).map(|b| JsBufferController::from(b))
+	#[napi(js_name = "buffer_by_name")]
+	pub fn js_buffer_by_name(&self, path: String) -> Option<CodempBufferController> {
+		self.buffer_by_name(&path)
 	}
 
-	#[napi]
-	pub async fn create(&self, path: String) -> napi::Result<()> {
-		Ok(self.0.create(&path).await.map_err(JsCodempError)?)
+	#[napi(js_name = "create")]
+	pub async fn js_create(&self, path: String) -> napi::Result<()> {
+		Ok(self.create(&path).await?)
 	}
 
-	#[napi]
-	pub async fn attach(&self, path: String) -> napi::Result<JsBufferController> {
-		Ok(JsBufferController::from(self.0.attach(&path).await.map_err(JsCodempError)?))
+	#[napi(js_name = "attach")]
+	pub async fn js_attach(&self, path: String) -> napi::Result<CodempBufferController> {
+		Ok(self.attach(&path).await?)
 	}
 	
 	/*#[napi]

src/workspace.rs

@@ -21,6 +21,9 @@ use tokio::sync::mpsc;
 use tonic::Streaming;
 use uuid::Uuid;
 
+#[cfg(feature = "js")]
+use napi_derive::napi;
+
 //TODO may contain more info in the future
 #[derive(Debug, Clone)]
 pub struct UserInfo {
@@ -29,6 +32,7 @@ pub struct UserInfo {
 
 #[derive(Debug, Clone)]
 #[cfg_attr(feature = "python", pyo3::pyclass)]
+#[cfg_attr(feature = "js", napi)]
 pub struct Workspace(Arc<WorkspaceInner>);
 
 #[derive(Debug)]
@@ -227,27 +231,32 @@ impl Workspace {
 	}
 
 	/// get the id of the workspace
+	// #[cfg_attr(feature = "js", napi)] // https://github.com/napi-rs/napi-rs/issues/1120
 	pub fn id(&self) -> String {
 		self.0.id.clone()
 	}
 
 	/// return a reference to current cursor controller, if currently in a workspace
+	// #[cfg_attr(feature = "js", napi)] // https://github.com/napi-rs/napi-rs/issues/1120
 	pub fn cursor(&self) -> cursor::Controller {
 		self.0.cursor.clone()
 	}
 
 	/// get a new reference to a buffer controller, if any is active to given path
+	// #[cfg_attr(feature = "js", napi)] // https://github.com/napi-rs/napi-rs/issues/1120
 	pub fn buffer_by_name(&self, path: &str) -> Option<buffer::Controller> {
 		self.0.buffers.get(path).map(|x| x.clone())
 	}
 
 	/// get a list of all the currently attached to buffers
+	// #[cfg_attr(feature = "js", napi)] // https://github.com/napi-rs/napi-rs/issues/1120
 	pub fn buffer_list(&self) -> Vec<String> {
 		self.0.buffers.iter().map(|elem| elem.key().clone()).collect()
 	}
 
 	/// get the currently cached "filetree"
+	// #[cfg_attr(feature = "js", napi)] // https://github.com/napi-rs/napi-rs/issues/1120
 	pub fn filetree(&self) -> Vec<String> {
 		self.0.filetree.iter().map(|f| f.clone()).collect()
 	}
-}
+}