Cargo.toml

@@ -18,4 +18,4 @@ tokio-util = "0.7"
 serde = "1.0"
 cli-log = "2.0"
 indexmap = "2.0.0"
-mlua = { version = "0.8.9", features = ["lua54", "async"] }
+mlua = { version = "0.8.9", features = ["lua54", "async", "send"] }

src/app/command_interface.rs

@@ -1,9 +1,11 @@
 // FIXME: This file needs documentation with examples of how the proc macros work.
 // for now use `cargo expand app::command_interface` for an overview
-use lua_macros::{ci_command, turn_struct_to_ci_commands};
 
-use super::events::event_types::Event;
+use std::{io::{Error, ErrorKind}, sync::Arc};
 
+use lua_macros::{ci_command, turn_struct_to_ci_command_enum};
+
+use crate::app::event_types::Event;
 /// This struct is here to guarantee, that all functions actually end up in the lua context.
 /// I.e. Rust should throw a compile error, when one field is added, but not a matching function.
 ///
@@ -20,41 +22,28 @@ use super::events::event_types::Event;
 /// ```
 /// where $return_type is the type returned by the function (the only supported ones are right now
 /// `String` and `()`).
-#[turn_struct_to_ci_commands]
+
+#[turn_struct_to_ci_command_enum]
 struct Commands {
     /// Greets the user
-    greet: fn(usize) -> String,
+    greet: fn(String) -> String,
 
     /// Closes the application
-    #[gen_default_lua_function]
+    //#[expose(lua)]
     exit: fn(),
 
     /// Shows the command line
-    #[gen_default_lua_function]
     command_line_show: fn(),
 
     /// Hides the command line
-    #[gen_default_lua_function]
     command_line_hide: fn(),
 
     /// Go to the next plane
-    #[gen_default_lua_function]
     cycle_planes: fn(),
     /// Go to the previous plane
-    #[gen_default_lua_function]
     cycle_planes_rev: fn(),
 
     /// Send a message to the current room
     /// The send message is interpreted literally.
     room_message_send: fn(String) -> String,
 }
-
-#[ci_command]
-async fn greet(lua: &mlua::Lua, input_str: String) -> Result<String, mlua::Error> {
-    Ok(format!("Name is {}", input_str))
-}
-
-#[ci_command]
-async fn room_message_send(lua: &mlua::Lua, input_str: String) -> Result<String, mlua::Error> {
-    Ok(format!("Sent message: {}", input_str))
-}

src/app/events/event_types/event/handlers/command.rs

@@ -2,39 +2,65 @@ use crate::app::{command_interface::Command, events::event_types::EventStatus, A
 use anyhow::Result;
 use cli_log::info;
 
-pub async fn handle(app: &mut App<'_>, command: &Command) -> Result<EventStatus> {
+pub async fn handle(
+    app: &mut App<'_>,
+    command: &Command,
+    send_output: bool,
+) -> Result<(EventStatus, String)> {
+    macro_rules! set_status_output {
+        ($str:expr) => {
+            if send_output {
+                app.ui.set_command_output($str);
+            }
+        };
+        ($str:expr, $($args:ident),+) => {
+            if send_output {
+                app.ui.set_command_output(&format!($str, $($args),+));
+            }
+        };
+    }
     info!("Handling command: {:#?}", command);
 
     Ok(match command {
-        Command::Exit => EventStatus::Terminate,
+        Command::Exit => (
+            EventStatus::Terminate,
+            "Terminated the application".to_owned(),
+        ),
 
         Command::CommandLineShow => {
             app.ui.cli_enable();
-            EventStatus::Ok
+            set_status_output!("CLI online");
+            (EventStatus::Ok, "".to_owned())
         }
         Command::CommandLineHide => {
             app.ui.cli_disable();
-            EventStatus::Ok
+            set_status_output!("CLI offline");
+            (EventStatus::Ok, "".to_owned())
         }
 
         Command::CyclePlanes => {
             app.ui.cycle_main_input_position();
-            EventStatus::Ok
+            set_status_output!("Switched main input position");
+            (EventStatus::Ok, "".to_owned())
         }
         Command::CyclePlanesRev => {
             app.ui.cycle_main_input_position_rev();
-            EventStatus::Ok
+            set_status_output!("Switched main input position; reversed");
+            (EventStatus::Ok, "".to_owned())
         }
 
         Command::RoomMessageSend(msg) => {
             if let Some(room) = app.status.room_mut() {
                 room.send(msg.clone()).await?;
             }
-            EventStatus::Ok
+            set_status_output!("Send message: `{}`", msg);
+            (EventStatus::Ok, "".to_owned())
         }
         Command::Greet(name) => {
             info!("Greated {}", name);
-            EventStatus::Ok
+            set_status_output!("Hi, {}!", name);
+            (EventStatus::Ok, "".to_owned())
         }
+        Command::Help(_) => todo!(),
     })
 }

src/app/events/event_types/event/handlers/lua_command.rs

@@ -1,24 +1,38 @@
+use std::{sync::Arc, time::Duration};
+
 use anyhow::{Context, Result};
-use cli_log::info;
+use cli_log::{debug, info};
+use tokio::{task, time::timeout};
 
-use crate::app::{
-    events::event_types::{Event, EventStatus},
-    App,
-};
+use crate::app::{events::event_types::EventStatus, App};
 
-pub async fn handle(app: &mut App<'_>, command: &str) -> Result<EventStatus> {
+pub async fn handle(app: &mut App<'_>, command: String) -> Result<EventStatus> {
     info!("Recieved ci command: `{command}`; executing..");
 
-    // TODO: Should the ci support more than strings?
-    let output = app
-        .lua
-        .load(command)
-        .eval_async::<String>()
-        .await
-        .with_context(|| format!("Failed to execute: `{command}`"))?;
-    info!("Function evaluated to: `{output}`");
+    let local = task::LocalSet::new();
 
-    app.tx.send(Event::CiOutput(output)).await.context("Failed to send ci output to internal event stream")?;
+    // Run the local task set.
+    let output = local
+        .run_until(async move {
+            let lua = Arc::clone(&app.lua);
+            debug!("before_handle");
+            let c_handle = task::spawn_local(async move {
+                lua.load(&command)
+                    // FIXME this assumes string output only
+                    .eval_async::<String>()
+                    .await
+                    .with_context(|| format!("Failed to execute: `{command}`"))
+            });
+            debug!("after_handle");
+            c_handle
+        })
+        .await;
+    debug!("after_thread");
+
+    let output = timeout(Duration::from_secs(10), output)
+        .await
+        .context("Failed to join lua command executor")???;
+    info!("Command returned: `{}`", output);
 
     Ok(EventStatus::Ok)
 }

src/app/events/event_types/event/handlers/main.rs

@@ -16,14 +16,14 @@ pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<E
             code: KeyCode::Esc, ..
         }) => {
             app.tx
-                .send(Event::CommandEvent(Command::Exit))
+                .send(Event::CommandEvent(Command::Exit, None))
                 .await?;
         }
         CrosstermEvent::Key(KeyEvent {
             code: KeyCode::Tab, ..
         }) => {
             app.tx
-                .send(Event::CommandEvent(Command::CyclePlanes))
+                .send(Event::CommandEvent(Command::CyclePlanes, None))
                 .await?;
         }
         CrosstermEvent::Key(KeyEvent {
@@ -31,7 +31,7 @@ pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<E
             ..
         }) => {
             app.tx
-                .send(Event::CommandEvent(Command::CyclePlanesRev))
+                .send(Event::CommandEvent(Command::CyclePlanesRev, None))
                 .await?;
         }
         CrosstermEvent::Key(KeyEvent {
@@ -40,7 +40,7 @@ pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<E
             ..
         }) => {
             app.tx
-                .send(Event::CommandEvent(Command::CommandLineShow))
+                .send(Event::CommandEvent(Command::CommandLineShow, None))
                 .await?;
         }
         input => match app.ui.input_position() {
@@ -52,9 +52,10 @@ pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<E
                         ..
                     }) => {
                         app.tx
-                            .send(Event::CommandEvent(Command::RoomMessageSend(
-                                app.ui.message_compose.lines().join("\n"),
-                            )))
+                            .send(Event::CommandEvent(
+                                Command::RoomMessageSend(app.ui.message_compose.lines().join("\n")),
+                                None,
+                            ))
                             .await?;
                         app.ui.message_compose_clear();
                     }

src/app/events/event_types/event/mod.rs

@@ -1,11 +1,13 @@
 mod handlers;
 
 use anyhow::{Context, Result};
+use cli_log::{info, trace};
 use crossterm::event::Event as CrosstermEvent;
+use tokio::sync::mpsc::Sender;
 
 use crate::app::{command_interface::Command, status::State, App};
 
-use self::handlers::{ci_output, command, lua_command, main, matrix, setup};
+use self::handlers::{command, lua_command, main, matrix, setup};
 
 use super::EventStatus;
 
@@ -13,32 +15,39 @@ use super::EventStatus;
 pub enum Event {
     InputEvent(CrosstermEvent),
     MatrixEvent(matrix_sdk::deserialized_responses::SyncResponse),
-    CommandEvent(Command),
-    CiOutput(String),
+    CommandEvent(Command, Option<Sender<String>>),
     LuaCommand(String),
 }
 
 impl Event {
     pub async fn handle(&self, app: &mut App<'_>) -> Result<EventStatus> {
+        trace!("Recieved event to handle: `{:#?}`", &self);
         match &self {
             Event::MatrixEvent(event) => matrix::handle(app, event)
                 .await
                 .with_context(|| format!("Failed to handle matrix event: `{:#?}`", event)),
 
-            Event::CommandEvent(event) => command::handle(app, event)
-                .await
-                .with_context(|| format!("Failed to handle command event: `{:#?}`", event)),
-            Event::CiOutput(output) => ci_output::handle(app, output).await.with_context(|| {
-                format!("Failed to handle command interface output: `{:#?}`", output)
-            }),
-            Event::LuaCommand(lua_code) => {
-                lua_command::handle(app, lua_code).await.with_context(|| {
-                    format!("Failed to handle lua code: `{:#?}`", lua_code)
-                })
+            Event::CommandEvent(event, callback_tx) => {
+                let (result, output) = command::handle(app, event, callback_tx.is_some())
+                    .await
+                    .with_context(|| format!("Failed to handle command event: `{:#?}`", event))?;
+
+                if let Some(callback_tx) = callback_tx {
+                    callback_tx
+                        .send(output.clone())
+                        .await
+                        .with_context(|| format!("Failed to send command output: {}", output))?;
+                }
+                Ok(result)
             }
+            Event::LuaCommand(lua_code) => lua_command::handle(app, lua_code.to_owned())
+                .await
+                .with_context(|| format!("Failed to handle lua code: `{:#?}`", lua_code)),
 
             Event::InputEvent(event) => match app.status.state() {
-                State::None => Ok(EventStatus::Ok),
+                State::None => unreachable!(
+                    "This state should not be available, when we are in the input handling"
+                ),
                 State::Main => main::handle(app, event)
                     .await
                     .with_context(|| format!("Failed to handle input event: `{:#?}`", event)),

src/app/mod.rs

@@ -2,9 +2,9 @@ pub mod command_interface;
 pub mod events;
 pub mod status;
 
-use std::path::Path;
+use std::{path::Path, sync::Arc};
 
-use anyhow::{Error, Result, Context};
+use anyhow::{Context, Error, Result};
 use cli_log::info;
 use matrix_sdk::Client;
 use mlua::Lua;
@@ -31,16 +31,16 @@ pub struct App<'ui> {
     input_listener_killer: CancellationToken,
     matrix_listener_killer: CancellationToken,
 
-    lua: Lua,
+    lua: Arc<Lua>,
 }
 
 impl App<'_> {
     pub fn new() -> Result<Self> {
-        fn set_up_lua(tx: mpsc::Sender<Event>) -> Lua {
+        fn set_up_lua(tx: mpsc::Sender<Event>) -> Arc<Lua> {
             let mut lua = Lua::new();
 
             generate_ci_functions(&mut lua, tx);
-            lua
+            Arc::new(lua)
         }
 
         let path: &std::path::Path = Path::new("userdata/accounts.json");