sqoush

Compiling the whole tui stack, just to debug the lua command line seems
counterproductive to me. This allows to just compile the needed parts
for a basic lua repl.

As of yet the repl is just a mock-up, as the event handling can, as of
right now, not easily be separated from the tui.

To activate specific features add specify the on the cargo command line
like this:
```
cargo run --features "cli tui"
```
or add them to the `default` feature set in the `Cargo.toml`.

Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-default = ["cli"]
+default = ["full"]
 full = ["cli", "tui"]
 
 cli = ["tokio/io-std"]

lua_macros/src/new/lib.rs

@@ -0,0 +1,26 @@
+#[proc_macro_attribute]
+pub fn turn_struct_to_ci_command_enum(_attrs: TokenStream, input: TokenStream) -> TokenStream {
+    // Construct a representation of Rust code as a syntax tree
+    // that we can manipulate
+    let mut input: DeriveInput = syn::parse(input).expect("This should always be valid rust code, as it's extracted from direct code");
+
+    let mut named_fields = match &input.data {
+        syn::Data::Struct(input) => match &input.fields {
+            syn::Fields::Named(named_fields) => named_fields,
+            _ => unimplemented!("The macro only works for named fields (e.g.: `Name: Type`)"),
+        },
+        _ => unimplemented!("The macro only works for structs"),
+    }
+    .to_owned();
+
+
+    // Build the trait implementation
+    let build_lua_functions: TokenStream2 = genrate::build_lua_functions(&input);
+
+    let command_enum = generate::command_enum(&named_fields);
+
+    quote! {
+    }
+    .into()
+}
+

src/event_handler/events/event/handlers/command.rs

@@ -0,0 +1,66 @@
+use crate::app::{command_interface::Command, events::event_types::EventStatus, App};
+use anyhow::Result;
+use cli_log::info;
+
+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,
+            "Terminated the application".to_owned(),
+        ),
+
+        Command::CommandLineShow => {
+            app.ui.cli_enable();
+            set_status_output!("CLI online");
+            (EventStatus::Ok, "".to_owned())
+        }
+        Command::CommandLineHide => {
+            app.ui.cli_disable();
+            set_status_output!("CLI offline");
+            (EventStatus::Ok, "".to_owned())
+        }
+
+        Command::CyclePlanes => {
+            app.ui.cycle_main_input_position();
+            set_status_output!("Switched main input position");
+            (EventStatus::Ok, "".to_owned())
+        }
+        Command::CyclePlanesRev => {
+            app.ui.cycle_main_input_position_rev();
+            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?;
+            }
+            set_status_output!("Send message: `{}`", msg);
+            (EventStatus::Ok, "".to_owned())
+        }
+        Command::Greet(name) => {
+            info!("Greated {}", name);
+            set_status_output!("Hi, {}!", name);
+            (EventStatus::Ok, "".to_owned())
+        }
+        Command::Help(_) => todo!(),
+    })
+}

src/event_handler/events/event/handlers/lua_command.rs

@@ -0,0 +1,21 @@
+use std::time::Duration;
+
+use anyhow::{Context, Result};
+use cli_log::info;
+use tokio::time::timeout;
+
+use crate::app::{events::event_types::EventStatus, App};
+
+pub async fn handle(app: &mut App<'_>, command: String) -> Result<EventStatus> {
+    info!("Recieved ci command: `{command}`; executing..");
+
+    app.lua_command_tx
+        .send(command.clone())
+        .await
+        .with_context(|| format!("Failed to execute: `{}`", command))?;
+
+
+    //let output = timeout(Duration::from_secs(5), run_command(app, command)).await??;
+
+    Ok(EventStatus::Ok)
+}

src/event_handler/events/event/handlers/main.rs

@@ -0,0 +1,188 @@
+use anyhow::{Context, Result};
+use crossterm::event::{Event as CrosstermEvent, KeyCode, KeyEvent, KeyModifiers};
+
+use crate::{
+    app::{
+        command_interface::Command,
+        events::event_types::{Event, EventStatus},
+        App,
+    },
+    ui::central,
+};
+
+pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<EventStatus> {
+    match input_event {
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::Esc, ..
+        }) => {
+            app.tx
+                .send(Event::CommandEvent(Command::Exit, None))
+                .await?;
+        }
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::Tab, ..
+        }) => {
+            app.tx
+                .send(Event::CommandEvent(Command::CyclePlanes, None))
+                .await?;
+        }
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::BackTab,
+            ..
+        }) => {
+            app.tx
+                .send(Event::CommandEvent(Command::CyclePlanesRev, None))
+                .await?;
+        }
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::Char('c'),
+            modifiers: KeyModifiers::CONTROL,
+            ..
+        }) => {
+            app.tx
+                .send(Event::CommandEvent(Command::CommandLineShow, None))
+                .await?;
+        }
+        input => match app.ui.input_position() {
+            central::InputPosition::MessageCompose => {
+                match input {
+                    CrosstermEvent::Key(KeyEvent {
+                        code: KeyCode::Enter,
+                        modifiers: KeyModifiers::ALT,
+                        ..
+                    }) => {
+                        app.tx
+                            .send(Event::CommandEvent(
+                                Command::RoomMessageSend(app.ui.message_compose.lines().join("\n")),
+                                None,
+                            ))
+                            .await?;
+                        app.ui.message_compose_clear();
+                    }
+                    _ => {
+                        app.ui
+                            .message_compose
+                            .input(tui_textarea::Input::from(input.to_owned()));
+                    }
+                };
+            }
+            central::InputPosition::Rooms => {
+                match input {
+                    CrosstermEvent::Key(KeyEvent {
+                        code: KeyCode::Up, ..
+                    }) => {
+                        let i = match app.ui.rooms_state.selected() {
+                            Some(cur) => {
+                                if cur > 0 {
+                                    cur - 1
+                                } else {
+                                    cur
+                                }
+                            }
+                            None => 0,
+                        };
+                        app.ui.rooms_state.select(Some(i));
+                        app.status.set_room_by_index(i)?;
+                    }
+                    CrosstermEvent::Key(KeyEvent {
+                        code: KeyCode::Down,
+                        ..
+                    }) => {
+                        let i = match app.ui.rooms_state.selected() {
+                            Some(cur) => {
+                                if cur < app.status.rooms().len() - 1 {
+                                    cur + 1
+                                } else {
+                                    cur
+                                }
+                            }
+                            None => 0,
+                        };
+                        app.ui.rooms_state.select(Some(i));
+                        app.status.set_room_by_index(i)?;
+                    }
+                    _ => (),
+                };
+            }
+            central::InputPosition::Messages => {
+                match input {
+                    CrosstermEvent::Key(KeyEvent {
+                        code: KeyCode::Up, ..
+                    }) => {
+                        match app.status.room_mut() {
+                            Some(room) => {
+                                let len = room.timeline().len();
+                                let i = match room.view_scroll() {
+                                    Some(i) => i + 1,
+                                    None => 0,
+                                };
+                                if i < len {
+                                    room.set_view_scroll(Some(i))
+                                }
+                                if i <= len - 5 {
+                                    room.poll_old_timeline().await?;
+                                }
+                            }
+                            None => (),
+                        };
+                    }
+                    CrosstermEvent::Key(KeyEvent {
+                        code: KeyCode::Down,
+                        ..
+                    }) => {
+                        match app.status.room_mut() {
+                            Some(room) => {
+                                match room.view_scroll() {
+                                    Some(i) => {
+                                        if i == 0 {
+                                            room.set_view_scroll(None);
+                                        } else {
+                                            room.set_view_scroll(Some(i - 1));
+                                        }
+                                    }
+                                    None => (),
+                                };
+                            }
+                            None => (),
+                        };
+                    }
+                    _ => (),
+                };
+            }
+            central::InputPosition::CLI => {
+                if let Some(_) = app.ui.cli {
+                    match input {
+                        CrosstermEvent::Key(KeyEvent {
+                            code: KeyCode::Enter,
+                            ..
+                        }) => {
+                            let ci_event = app.ui
+                                            .cli
+                                            .as_mut()
+                                            .expect("This is already checked")
+                                            .lines()
+                                            .get(0)
+                                            .expect(
+                                                "There can only be one line in the buffer, as we collect it on enter being inputted"
+                                            )
+                                            .to_owned();
+                            app.tx
+                                .send(Event::LuaCommand(ci_event))
+                                .await
+                                .context("Failed to send lua command to internal event stream")?;
+                        }
+                        _ => {
+                            app.ui
+                                .cli
+                                .as_mut()
+                                .expect("This is already checked")
+                                .input(tui_textarea::Input::from(input.to_owned()));
+                        }
+                    };
+                };
+            }
+            _ => (),
+        },
+    };
+    Ok(EventStatus::Ok)
+}

src/event_handler/events/event/handlers/matrix.rs

@@ -0,0 +1,23 @@
+use matrix_sdk::deserialized_responses::SyncResponse;
+use anyhow::Result;
+
+use crate::app::{events::event_types::EventStatus, App};
+
+pub async fn handle<'a>(app: &mut App<'a>, sync: &SyncResponse) -> Result<EventStatus> {
+    for (m_room_id, m_room) in sync.rooms.join.iter() {
+        let room = match app.status.get_room_mut(m_room_id) {
+            Some(r) => r,
+            None => continue,
+        };
+        for m_event in m_room.timeline.events.clone() {
+            let event = m_event
+                .event
+                .deserialize()
+                .unwrap()
+                .into_full_event(m_room_id.clone());
+            room.timeline_add(event);
+        }
+    }
+
+    Ok(EventStatus::Ok)
+}

src/event_handler/events/event/handlers/mod.rs

@@ -0,0 +1,10 @@
+// input events
+pub mod main;
+pub mod setup;
+
+// matrix
+pub mod matrix;
+
+// ci
+pub mod command;
+pub mod lua_command;

src/event_handler/events/event/handlers/setup.rs

@@ -0,0 +1,72 @@
+use anyhow::{bail, Context, Result};
+use crossterm::event::{Event as CrosstermEvent, KeyCode, KeyEvent};
+
+use crate::{app::{events::event_types::EventStatus, App}, ui::setup};
+
+pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<EventStatus> {
+    let ui = match &mut app.ui.setup_ui {
+        Some(ui) => ui,
+        None => bail!("SetupUI instance not found"),
+    };
+
+    match input_event {
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::Esc, ..
+        }) => return Ok(EventStatus::Terminate),
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::Tab, ..
+        }) => {
+            ui.cycle_input_position();
+        }
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::BackTab,
+            ..
+        }) => {
+            ui.cycle_input_position_rev();
+        }
+        CrosstermEvent::Key(KeyEvent {
+            code: KeyCode::Enter,
+            ..
+        }) => {
+            match ui.input_position() {
+                setup::InputPosition::Ok => {
+                    let homeserver = ui.homeserver.lines()[0].clone();
+                    let username = ui.username.lines()[0].clone();
+                    let password = ui.password_data.lines()[0].clone();
+                    app.login(&homeserver, &username, &password)
+                        .await
+                        .context("Failed to login")?;
+                    // We bailed in the line above, thus login must have succeeded
+                    return Ok(EventStatus::Finished);
+                }
+                _ => ui.cycle_input_position(),
+            };
+        }
+        input => match ui.input_position() {
+            setup::InputPosition::Homeserver => {
+                ui.homeserver.input(input.to_owned());
+            }
+            setup::InputPosition::Username => {
+                ui.username.input(input.to_owned());
+            }
+            setup::InputPosition::Password => {
+                let textarea_input = tui_textarea::Input::from(input.to_owned());
+                ui.password_data.input(textarea_input.clone());
+                match textarea_input.key {
+                    tui_textarea::Key::Char(_) => {
+                        ui.password.input(tui_textarea::Input {
+                            key: tui_textarea::Key::Char('*'),
+                            ctrl: false,
+                            alt: false,
+                        });
+                    }
+                    _ => {
+                        ui.password.input(textarea_input);
+                    }
+                }
+            }
+            _ => (),
+        },
+    };
+    Ok(EventStatus::Ok)
+}

src/event_handler/events/event/mod.rs

@@ -0,0 +1,60 @@
+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::{command, lua_command, main, matrix, setup};
+
+use super::EventStatus;
+
+#[derive(Debug)]
+pub enum Event {
+    InputEvent(CrosstermEvent),
+    MatrixEvent(matrix_sdk::deserialized_responses::SyncResponse),
+    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, 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 => 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)),
+                State::Setup => setup::handle(app, event)
+                    .await
+                    .with_context(|| format!("Failed to handle input event: `{:#?}`", event)),
+            },
+        }
+    }
+}

src/event_handler/events/event_status.rs

@@ -0,0 +1,6 @@
+#[derive(Debug)]
+pub enum EventStatus {
+    Ok,
+    Finished,
+    Terminate,
+}

src/event_handler/events/mod.rs

@@ -0,0 +1,5 @@
+pub mod event;
+pub mod event_status;
+
+pub use self::event::*;
+pub use self::event_status::*;

src/event_handler/mod.rs

@@ -0,0 +1,85 @@
+use tokio::{
+    runtime::Builder,
+    sync::{mpsc, oneshot},
+    task::LocalSet,
+};
+
+#[cfg(feature = "tui")]
+mod poll_functions;
+
+mod events;
+
+// This struct describes the task you want to spawn. Here we include
+// some simple examples. The oneshot channel allows sending a response
+// to the spawner.
+#[derive(Debug)]
+enum Task {
+    PrintNumber(u32),
+    AddOne(u32, oneshot::Sender<u32>),
+}
+
+#[derive(Clone)]
+struct LocalSpawner {
+    send: mpsc::UnboundedSender<Task>,
+}
+
+impl LocalSpawner {
+    pub fn new() -> Self {
+        let (send, mut recv) = mpsc::unbounded_channel();
+
+        let rt = Builder::new_current_thread().enable_all().build().unwrap();
+
+        std::thread::spawn(move || {
+            let local = LocalSet::new();
+
+            local.spawn_local(async move {
+                while let Some(new_task) = recv.recv().await {
+                    tokio::task::spawn_local(run_task(new_task));
+                }
+                // If the while loop returns, then all the LocalSpawner
+                // objects have been dropped.
+            });
+
+            // This will return once all senders are dropped and all
+            // spawned tasks have returned.
+            rt.block_on(local);
+        });
+
+        Self { send }
+    }
+
+    pub fn spawn(&self, task: Task) {
+        self.send
+            .send(task)
+            .expect("Thread with LocalSet has shut down.");
+    }
+}
+
+// This task may do !Send stuff. We use printing a number as an example,
+// but it could be anything.
+//
+// The Task struct is an enum to support spawning many different kinds
+// of operations.
+async fn run_task(task: Task) {
+    match task {
+        Task::PrintNumber(n) => {
+            println!("{}", n);
+        }
+        Task::AddOne(n, response) => {
+            // We ignore failures to send the response.
+            let _ = response.send(n + 1);
+        }
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let spawner = LocalSpawner::new();
+
+    let (send, response) = oneshot::channel();
+    spawner.spawn(Task::AddOne(10, send));
+    let eleven = response.await.unwrap();
+
+    spawner.spawn(Task::PrintNumber(eleven));
+    assert_eq!(eleven, 11);
+}

src/event_handler/poll_functions.rs

@@ -0,0 +1,60 @@
+use anyhow::{bail, Result};
+use matrix_sdk::{config::SyncSettings, Client, LoopCtrl};
+use tokio::{sync::mpsc, time::Duration};
+use tokio_util::sync::CancellationToken;
+
+use self::event_types::Event;
+
+pub async fn poll_input_events(
+    channel: mpsc::Sender<Event>,
+    kill: CancellationToken,
+) -> Result<()> {
+    async fn poll_input_events_stage_2(channel: mpsc::Sender<Event>) -> Result<()> {
+        loop {
+            if crossterm::event::poll(Duration::from_millis(100))? {
+                let event = Event::InputEvent(crossterm::event::read()?);
+                channel.send(event).await?;
+            } else {
+                tokio::task::yield_now().await;
+            }
+        }
+    }
+    tokio::select! {
+        output = poll_input_events_stage_2(channel) => output,
+        _ = kill.cancelled() => bail!("received kill signal")
+    }
+}
+
+pub async fn poll_matrix_events(
+    channel: mpsc::Sender<Event>,
+    kill: CancellationToken,
+    client: Client,
+) -> Result<()> {
+    async fn poll_matrix_events_stage_2(
+        channel: mpsc::Sender<Event>,
+        client: Client,
+    ) -> Result<()> {
+        let sync_settings = SyncSettings::default();
+        // .token(sync_token)
+        // .timeout(Duration::from_secs(30));
+
+        let tx = &channel;
+
+        client
+            .sync_with_callback(sync_settings, |response| async move {
+                let event = Event::MatrixEvent(response);
+
+                match tx.send(event).await {
+                    Ok(_) => LoopCtrl::Continue,
+                    Err(_) => LoopCtrl::Break,
+                }
+            })
+            .await?;
+
+        Ok(())
+    }
+    tokio::select! {
+        output = poll_matrix_events_stage_2(channel, client) => output,
+        _ = kill.cancelled() => bail!("received kill signal"),
+    }
+}