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.lock

@@ -73,6 +73,55 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anstream"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ca84f3628370c59db74ee214b3263d58f9aadd9b4fe7e711fd87dc452b7f163"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is-terminal",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a30da5c5f2d5e72842e00bcb57657162cdabef0931f40e2deb9b4140440cecd"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "938874ff5980b03a87c5524b3ae5b59cf99b1d6bc836848df7bc5ada9643c333"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ca11d4be1bab0c8bc8734a9aa7bf4ee8316d462a08c6ac5052f888fef5b494b"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "180abfa45703aebe0093f79badacc01b8fd4ea2e35118747e5811127f926e188"
+dependencies = [
+ "anstyle",
+ "windows-sys",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.72"
@@ -145,9 +194,9 @@ dependencies = [
 
 [[package]]
 name = "async-trait"
-version = "0.1.71"
+version = "0.1.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a564d521dd56509c4c47480d00b80ee55f7e385ae48db5744c67ad50c92d2ebf"
+checksum = "cc6dde6e4ed435a4c1ee4e73592f5ba9da2151af10076cc04858746af9352d09"
 dependencies = [
  "proc-macro2 1.0.66",
  "quote 1.0.31",
@@ -228,6 +277,12 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitflags"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "630be753d4e58660abd17930c71b647fe46c27ea6b63cc59e1e3851406972e42"
+
 [[package]]
 name = "blake3"
 version = "1.4.1"
@@ -382,6 +437,47 @@ dependencies = [
  "inout",
 ]
 
+[[package]]
+name = "clap"
+version = "4.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fd304a20bff958a57f04c4e96a2e7594cc4490a0e809cbd48bb6437edaa452d"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+ "once_cell",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01c6a3f08f1fe5662a35cfe393aec09c4df95f60ee93b7556505260f75eee9e1"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54a9bb5758fc5dfe728d1019941681eccaf0cf8a4189b692a0ee2f2ecf90a050"
+dependencies = [
+ "heck",
+ "proc-macro2 1.0.66",
+ "quote 1.0.31",
+ "syn 2.0.26",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2da6da31387c7e4ef160ffab6d5e7f00c42626fe39aea70a7b0f1773f7dd6c1b"
+
 [[package]]
 name = "cli-log"
 version = "2.0.0"
@@ -400,9 +496,15 @@ version = "0.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
+[[package]]
+name = "colorchoice"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
+
 [[package]]
 name = "const-oid"
 version = "0.7.1"
@@ -486,7 +588,7 @@ version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e64e6c0fbe2c17357405f7c758c1ef960fce08bdfb2c03d88d2a18d7e09c4b67"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "crossterm_winapi",
  "libc",
  "mio",
@@ -690,9 +792,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.8.1"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
+checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
 
 [[package]]
 name = "encoding_rs"
@@ -738,12 +840,9 @@ checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
 
 [[package]]
 name = "fastrand"
-version = "1.9.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e51093e27b0797c359783294ca4f0a911c270184cb10f85783b118614a1501be"
+checksum = "6999dc1837253364c2ebb0704ba97994bd874e8f195d665c50b7548f6ea92764"
-dependencies = [
- "instant",
-]
 
 [[package]]
 name = "file-size"
@@ -1003,6 +1102,12 @@ version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
 
+[[package]]
+name = "heck"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+
 [[package]]
 name = "hermit-abi"
 version = "0.3.2"
@@ -1194,23 +1299,23 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "io-lifetimes"
-version = "1.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
-dependencies = [
- "hermit-abi",
- "libc",
- "windows-sys",
-]
-
 [[package]]
 name = "ipnet"
 version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28b29a3cd74f0f4598934efe3aeba42bae0eb4680554128851ebbecb02af14e6"
 
+[[package]]
+name = "is-terminal"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
+dependencies = [
+ "hermit-abi",
+ "rustix",
+ "windows-sys",
+]
+
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -1267,9 +1372,9 @@ checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.3.8"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
+checksum = "09fc20d2ca12cb9f044c93e3bd6d32d523e6e2ec3db4f7b2939cd99026ecd3f0"
 
 [[package]]
 name = "lock_api"
@@ -1614,7 +1719,7 @@ version = "0.10.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "345df152bc43501c5eb9e4654ff05f794effb78d4efe3d53abc158baddc0703d"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "cfg-if",
  "foreign-types",
  "libc",
@@ -2064,7 +2169,7 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -2073,7 +2178,7 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -2199,7 +2304,7 @@ dependencies = [
  "thiserror",
  "tracing",
  "url",
- "uuid 1.4.0",
+ "uuid 1.4.1",
  "wildmatch",
 ]
 
@@ -2255,13 +2360,12 @@ checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
 [[package]]
 name = "rustix"
-version = "0.37.23"
+version = "0.38.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d69718bf81c6127a49dc64e44a742e8bb9213c0ff8869a22c308f84c1d4ab06"
+checksum = "0a962918ea88d644592894bc6dc55acc6c0956488adcebbfb6e273506b7fd6e5"
 dependencies = [
- "bitflags",
+ "bitflags 2.3.3",
  "errno",
- "io-lifetimes",
  "libc",
  "linux-raw-sys",
  "windows-sys",
@@ -2290,11 +2394,11 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "security-framework"
-version = "2.9.1"
+version = "2.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fc758eb7bffce5b308734e9b0c1468893cae9ff70ebf13e7090be8dcbcc83a8"
+checksum = "05b64fb303737d99b81884b2c63433e9ae28abebe5eb5045dcdd175dc2ecf4de"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "core-foundation",
  "core-foundation-sys",
  "libc",
@@ -2303,9 +2407,9 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "2.9.0"
+version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f51d0c0d83bec45f16480d0ce0058397a69e48fcdc52d1dc8855fb68acbd31a7"
+checksum = "e932934257d3b408ed8f30db49d85ea163bfe74961f017f405b025af298f0c7a"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -2313,9 +2417,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.171"
+version = "1.0.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30e27d1e4fd7659406c492fd6cfaf2066ba8773de45ca75e855590f856dc34a9"
+checksum = "3b88756493a5bd5e5395d53baa70b194b05764ab85b59e43e4b8f4e1192fa9b1"
 dependencies = [
  "serde_derive",
 ]
@@ -2331,9 +2435,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.171"
+version = "1.0.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "389894603bd18c46fa56231694f8d827779c0951a667087194cf9de94ed24682"
+checksum = "6e5c3a298c7f978e53536f95a63bdc4c4a64550582f31a0359a9afda6aede62e"
 dependencies = [
  "proc-macro2 1.0.66",
  "quote 1.0.31",
@@ -2520,11 +2624,10 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.6.0"
+version = "3.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31c0432476357e58790aaa47a8efb0c5138f137343f3b5f23bd36a27e3b0a6d6"
+checksum = "5486094ee78b2e5038a6382ed7645bc084dc2ec433426ca4c3cb61e2007b8998"
 dependencies = [
- "autocfg 1.1.0",
  "cfg-if",
  "fastrand",
  "redox_syscall 0.3.5",
@@ -2700,12 +2803,14 @@ name = "trinitrix"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "clap",
  "cli-log",
  "crossterm",
  "indexmap 2.0.0",
  "lua_macros",
  "matrix-sdk",
  "mlua",
+ "once_cell",
  "serde",
  "tokio",
  "tokio-util",
@@ -2725,7 +2830,7 @@ version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ccdd26cbd674007e649a272da4475fb666d3aa0ad0531da7136db6fab0e5bad1"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "cassowary",
  "crossterm",
  "unicode-segmentation",
@@ -2808,6 +2913,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "utf8parse"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
+
 [[package]]
 name = "uuid"
 version = "0.7.4"
@@ -2828,9 +2939,9 @@ dependencies = [
 
 [[package]]
 name = "uuid"
-version = "1.4.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d023da39d1fde5a8a3fe1f3e01ca9632ada0a63e9797de55a879d6e2236277be"
+checksum = "79daa5ed5740825c40b389c5e50312b9c86df53fccd33f281df655642b43869d"
 dependencies = [
  "getrandom 0.2.10",
  "wasm-bindgen",

Cargo.toml

@@ -6,16 +6,29 @@ license = "MIT"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[features]
+default = ["full"]
+full = ["cli", "tui"]
+
+cli = ["tokio/io-std"]
+tui = ["dep:tui", "dep:tui-textarea", "dep:crossterm", "dep:tokio-util", "dep:serde", "dep:indexmap"]
+
 [dependencies]
-lua_macros = { path = "./lua_macros" }
+clap = { version = "4.3.19", features = ["derive"] }
-tui = "0.19"
-tui-textarea = { version = "0.2", features = ["crossterm"] }
-crossterm = "0.25"
-matrix-sdk = "0.6"
-anyhow = "1.0"
-tokio = { version = "1.29", features = ["macros", "rt-multi-thread"] }
-tokio-util = "0.7"
-serde = "1.0"
 cli-log = "2.0"
-indexmap = "2.0.0"
+anyhow = "1.0"
+matrix-sdk = "0.6"
+tokio = { version = "1.29", features = ["macros", "rt-multi-thread"] }
+
+# lua stuff
+lua_macros = { path = "./lua_macros" }
 mlua = { version = "0.8.9", features = ["lua54", "async", "send"] }
+once_cell = "1.18.0"
+
+# tui feature specific parts
+tui = {version = "0.19", optional = true}
+tui-textarea = { version = "0.2", features = ["crossterm"], optional = true }
+crossterm = { version = "0.25", optional = true }
+tokio-util = { version = "0.7", optional = true }
+serde = { version = "1.0", optional = true }
+indexmap = { version = "2.0.0", optional = true }

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/cli.rs

@@ -0,0 +1,23 @@
+use clap::{Parser, Subcommand};
+
+// TODO: The description could be better
+/// A terminal client for the matrix chat protocol
+#[derive(Parser, Debug)]
+#[clap(author, version, about, long_about = None)]
+pub struct Args {
+    #[command(subcommand)]
+    /// The subcommand to execute, default is start
+    pub subcommand: Option<Command>,
+}
+#[derive(Subcommand, Debug)]
+pub enum Command {
+    /// Starts a repl, for the lua interface
+    #[cfg(feature = "cli")]
+    #[clap(value_parser)]
+    Repl {},
+
+    /// Starts the main tui client
+    #[cfg(feature = "tui")]
+    #[clap(value_parser)]
+    Start {},
+}

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/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"),
+    }
+}

src/main.rs

@@ -1,13 +1,43 @@
-mod accounts;
+mod cli;
-mod app;
+pub mod event_handler;
-mod ui;
+
+#[cfg(feature = "tui")]
+mod tui_app;
+
+#[cfg(feature = "cli")]
+mod repl;
+
+use clap::Parser;
+
+use crate::cli::{Args, Command};
+
+#[cfg(feature = "tui")]
+pub use tui_app::*;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     cli_log::init_cli_log!();
 
+    let args = Args::parse();
+    let command = args.subcommand.unwrap_or(
+        #[cfg(all(feature = "tui", not(feature = "cli")))]
+        Command::Start {},
+        #[cfg(all(feature = "cli", not(feature = "tui")))]
+        Command::Repl {},
+        #[cfg(all(feature = "cli", feature = "tui"))]
+        Command::Start {},
+    );
+    match command {
+        #[cfg(feature = "cli")]
+        Command::Repl {} => {
+            repl::run().await?;
+        }
+        #[cfg(feature = "tui")]
+        Command::Start {} => {
             let mut app = app::App::new()?;
             app.run().await?;
+        }
+    };
 
     Ok(())
 }

src/repl/mod.rs

@@ -0,0 +1,41 @@
+use std::io::ErrorKind;
+
+use anyhow::{Context, Result};
+use cli_log::{info, warn};
+use tokio::io::{stdin, stdout, AsyncReadExt, AsyncWriteExt};
+
+pub async fn run() -> Result<()> {
+    let mut stdin = stdin();
+    let mut stdout = stdout();
+    let mut buffer = [0; 1];
+    let mut new_command = vec![];
+
+    loop {
+        stdout
+            .write("trinitrix:> ".as_bytes())
+            .await
+            .context("Failed to write prompt")?;
+        stdout.flush().await.context("Failed to flush prompt")?;
+        new_command.clear();
+        loop {
+            if let Err(err) = stdin.read_exact(&mut buffer).await {
+                if err.kind() == ErrorKind::UnexpectedEof {
+                    warn!("Unexpected EOF, we assume the user quit.");
+                    return Ok(());
+                } else {
+                    Err(err).context("Failed to read next character")?;
+                }
+            }
+            if buffer == "\n".as_bytes() {
+                break;
+            } else {
+                new_command.append(&mut buffer.to_vec());
+            }
+        }
+        info!(
+            "Got user repl input: {}",
+            String::from_utf8(new_command.clone())
+                .context("Failed to convert user input to utf8 string")?
+        )
+    }
+}

src/tui_app/app/command_interface.rs

@@ -0,0 +1,63 @@
+use cli_log::debug;
+
+#[derive(Debug)]
+pub enum Command {
+    Greet(String),
+    Exit,
+    CommandLineShow,
+    CommandLineHide,
+    CyclePlanes,
+    CyclePlanesRev,
+    RoomMessageSend(String),
+    Help(Option<String>),
+}
+
+pub fn generate_ci_functions(
+    lua: mlua::Lua,
+    tx: tokio::sync::mpsc::Sender<crate::app::events::event_types::Event>,
+) -> mlua::Lua {
+    lua.set_app_data(tx);
+    let globals = lua.globals();
+    let fun_greet = lua.create_async_function(greet).expect(&{
+        let res = format!("The function: `{}` should be defined", "greet");
+        res
+    });
+    globals.set("greet", fun_greet).expect(&{
+        let res = format!(
+            "Setting a static global value ({}, fun_{}) should work",
+            "greet", "greet",
+        );
+        res
+    });
+
+    drop(globals);
+    lua
+}
+
+async fn greet(lua: &mlua::Lua, input: String) -> Result<String, mlua::Error> {
+    let (callback_tx, mut callback_rx) = tokio::sync::mpsc::channel::<String>(256);
+    let tx: core::cell::Ref<tokio::sync::mpsc::Sender<crate::app::events::event_types::Event>> =
+        lua.app_data_ref().expect("This exists, it was set before");
+
+    debug!("Got tx");
+    (*tx)
+        .try_send(crate::app::events::event_types::Event::CommandEvent(
+            Command::Greet(input.clone()),
+            Some(callback_tx),
+        ))
+        .expect("This should work, as the reciever is not dropped");
+
+    debug!("Sent CommandEvent");
+
+    debug!("Returning output...");
+    if let Some(output) = callback_rx.recv().await {
+        callback_rx.close();
+        debug!("returned output");
+        return Ok(output);
+    } else {
+        debug!("Not returning output...");
+        return Err(mlua::Error::ExternalError(std::sync::Arc::new(
+            std::io::Error::new(std::io::ErrorKind::Other, "Callback reciever dropped"),
+        )));
+    }
+}

src/tui_app/app/events/event_types/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/tui_app/app/events/event_types/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/tui_app/app/events/event_types/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/tui_app/app/events/event_types/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/tui_app/app/events/event_types/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/tui_app/app/events/event_types/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/tui_app/app/events/event_types/event_status.rs

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

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

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

src/tui_app/app/mod.rs

@@ -2,14 +2,17 @@ pub mod command_interface;
 pub mod events;
 pub mod status;
 
-use std::{path::Path, sync::Arc};
+use std::path::Path;
 
 use anyhow::{Context, Error, Result};
 use cli_log::info;
 use matrix_sdk::Client;
-use mlua::Lua;
+use once_cell::sync::OnceCell;
 use status::{State, Status};
-use tokio::sync::mpsc;
+use tokio::{
+    sync::{mpsc, Mutex},
+    task::LocalSet,
+};
 use tokio_util::sync::CancellationToken;
 
 use crate::{
@@ -31,16 +34,42 @@ pub struct App<'ui> {
     input_listener_killer: CancellationToken,
     matrix_listener_killer: CancellationToken,
 
-    lua: Arc<Lua>,
+    lua_command_tx: mpsc::Sender<String>,
 }
 
 impl App<'_> {
     pub fn new() -> Result<Self> {
-        fn set_up_lua(tx: mpsc::Sender<Event>) -> Arc<Lua> {
+        fn set_up_lua(tx: mpsc::Sender<Event>) -> mpsc::Sender<String> {
-            let mut lua = Lua::new();
+            info!("Setting up Lua context..");
+            static LUA: OnceCell<Mutex<mlua::Lua>> = OnceCell::new();
 
-            generate_ci_functions(&mut lua, tx);
+            let (lua_command_tx, mut rx) = mpsc::channel(256);
-            Arc::new(lua)
+
+            let local_set = LocalSet::new();
+            local_set.spawn_local(async move {
+                let lua = LUA
+                    .get_or_init(|| Mutex::new(generate_ci_functions(mlua::Lua::new(), tx)))
+                    .lock()
+                    .await;
+                info!("Initialized Lua context");
+
+                while let Some(command) = rx.recv().await {
+                    info!("Recieved command to execute: `{}`", &command);
+                    let output = lua
+                        .load(&command)
+                        // FIXME this assumes string output only
+                        .eval_async::<String>()
+                        .await
+                        .with_context(|| format!("Failed to execute: `{command}`"));
+                    info!(
+                        "Function `{}` returned: `{}`",
+                        command,
+                        output.unwrap_or("<returned error>".to_owned())
+                    );
+                }
+            });
+
+            lua_command_tx
         }
 
         let path: &std::path::Path = Path::new("userdata/accounts.json");
@@ -62,7 +91,7 @@ impl App<'_> {
             input_listener_killer: CancellationToken::new(),
             matrix_listener_killer: CancellationToken::new(),
 
-            lua: set_up_lua(tx),
+            lua_command_tx: set_up_lua(tx),
         })
     }
 
@@ -86,11 +115,10 @@ impl App<'_> {
             self.ui.update(&self.status).await?;
 
             let event = self.rx.recv().await.context("Failed to get next event")?;
-
             match event.handle(self).await? {
                 event_types::EventStatus::Ok => (),
                 event_types::EventStatus::Terminate => break,
-                _ => (),
+                _ => todo!(),
             };
         }
 

src/tui_app/mod.rs

@@ -0,0 +1,7 @@
+pub mod app;
+pub mod ui;
+pub mod accounts;
+
+pub use app::*;
+pub use ui::*;
+pub use accounts::*;