refactor(src/ui): Allow for a repl

src/app/config/lua/mod.rs

@@ -1,14 +1,45 @@
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
-use anyhow::Result;
+use anyhow::{Context, Result};
-use cli_log::info;
+use cli_log::{info, warn};
 use tokio::{fs, sync::mpsc::Sender};
 
 use crate::app::events::Event;
 
+const LUA_CONFIG_FILE_NAME: &str = "init.lua";
+
 pub async fn load(tx: Sender<Event>, path: PathBuf) -> Result<()> {
+    info!("Loaded config file at '{}'", path.display());
+
     let lua_config_code = fs::read_to_string(&path).await?;
     tx.send(Event::LuaCommand(lua_config_code)).await?;
-    info!("Loaded config file at `{}`", path.display());
+
     Ok(())
 }
+
+pub async fn check_for_config_file(config_dir: &Path) -> Result<Option<PathBuf>> {
+    if config_dir
+        .try_exists()
+        .context("Failed to search for a config file")?
+    {
+        info!("Found config dir: `{}`", config_dir.display());
+        let config_file = config_dir.join(LUA_CONFIG_FILE_NAME);
+
+        info!("Searching for config file at '{}'", config_file.display());
+        if config_file.try_exists().with_context(|| {
+            format!(
+                "Failed to check, if the lua config file at '{}' exists.",
+                config_file.display()
+            )
+        })? {
+            info!("Found the config file at: '{}'", config_file.display());
+            Ok(Some(config_file))
+        } else {
+            warn!("No config file found!");
+            Ok(None)
+        }
+    } else {
+        warn!("No config directory found at {}!", config_dir.display());
+        Ok(None)
+    }
+}

src/app/config/mod.rs

@@ -1 +1,2 @@
 pub mod lua;
+pub mod shared_objects;

src/app/config/shared_objects/mod.rs

@@ -0,0 +1,22 @@
+use std::{ffi::c_int, path::Path};
+
+use anyhow::{Context, Result};
+use cli_log::info;
+use libloading::{Library, Symbol};
+
+pub fn load(plugin: &Path) -> Result<()> {
+    info!("Loading a plugin from '{}'", plugin.display());
+
+    unsafe {
+        let lib = Library::new(plugin).context("Failed to load plugin")?;
+        let func: Symbol<unsafe fn() -> c_int> = lib
+            .get(b"plugin_main")
+            .context("Plugin does not have a 'plugin_main' symbol")?;
+
+        info!("Starting plugin");
+        let out = func();
+        info!("Plugin finished with: {}", out);
+    }
+
+    Ok(())
+}

src/app/events/handlers/command.rs

@@ -14,7 +14,7 @@ use crate::{
         App,
     },
     trinitrix::api::ui::Mode,
-    ui::central::InputPosition,
+    ui::ui_trait::TrinitrixUi,
 };
 use anyhow::Result;
 use cli_log::{info, trace, warn};
@@ -25,8 +25,8 @@ use keymaps::{
 };
 use trixy::oneshot;
 
-pub async fn handle(
+pub async fn handle<U: TrinitrixUi>(
-    app: &mut App<'_>,
+    app: &mut App<U>,
     command: &Commands,
 
     // FIXME(@soispha): The `String` is temporary <2024-05-03>
@@ -96,24 +96,24 @@ pub async fn handle(
                         }
                         Mode::Insert => {
                             app.status.set_state(State::Insert);
-                            app.ui.set_input_position(InputPosition::MessageCompose);
                             send_status_output!("Set input mode to Insert");
                             EventStatus::Ok
                         }
                         Mode::Command => {
-                            app.ui.cli_enable();
                             app.status.set_state(State::Command);
                             send_status_output!("Set input mode to CLI");
                             EventStatus::Ok
                         }
                     },
                     Ui::cycle_planes => {
-                        app.ui.cycle_main_input_position();
+                        // TODO(@soispha): add this <2024-05-04>
+                        // app.ui.cycle_main_input_position();
                         send_status_output!("Switched main input position");
                         EventStatus::Ok
                     }
                     Ui::cycle_planes_rev => {
-                        app.ui.cycle_main_input_position_rev();
+                        // TODO(@soispha): and this <2024-05-04>
+                        // app.ui.cycle_main_input_position_rev();
                         send_status_output!("Switched main input position; reversed");
                         EventStatus::Ok
                     }
@@ -178,32 +178,20 @@ pub async fn handle(
                         EventStatus::Ok
                     }
                     Raw::send_input_unprocessed { input } => {
-                        let output = match app.status.state() {
-                            State::Insert => {
                         let key = Key::from_str(input.as_str())?;
-                                let cross_input: Event = key.try_into()?;
+                        // let cross_input: Event = key.try_into()?;
-                                app.ui
+
-                                    .message_compose
+                        match app.status.state() {
-                                    .input(tui_textarea::Input::from(cross_input));
+                            State::Insert | State::Command => {
-                                EventStatus::Ok
+                                app.ui.input(key);
-                            }
-                            State::Command => {
-                                let key = Key::from_str(input.as_str())?;
-                                let cross_input: Event = key.try_into()?;
-                                app.ui
-                                    .cli
-                                    .as_mut()
-                                    .expect("This should exist, when the state is 'Command'")
-                                    .input(tui_textarea::Input::from(cross_input));
-                                EventStatus::Ok
                             }
                             State::Normal
                             | State::KeyInputPending {
                                 old_state: _,
                                 pending_keys: _,
-                            } => EventStatus::Ok,
+                            } => {}
-                        };
+                        }
-                        output
+                        EventStatus::Ok
                     }
                     Raw::Private(private) => {
                         // no-op, this was used to store functions (not so sure, if we need it

src/app/events/handlers/input.rs

@@ -3,7 +3,8 @@ use cli_log::info;
 use crossterm::event::Event as CrosstermEvent;
 use keymaps::key_repr::{Key, Keys};
 
-use crate::app::{
+use crate::{
+    app::{
         command_interface::{
             trinitrix::{
                 api::{raw::Raw, Api},
@@ -14,10 +15,19 @@ use crate::app::{
         events::{Event, EventStatus},
         status::State,
         App,
+    },
+    ui::ui_trait::TrinitrixUi,
 };
 
-pub async fn handle(app: &mut App<'_>, input_event: &CrosstermEvent) -> Result<EventStatus> {
+pub async fn handle<U: TrinitrixUi>(
-    async fn default(converted_key: Key, app: &mut App<'_>, old_state: &State) -> Result<()> {
+    app: &mut App<U>,
+    input_event: &CrosstermEvent,
+) -> Result<EventStatus> {
+    async fn default<U: TrinitrixUi>(
+        converted_key: Key,
+        app: &mut App<U>,
+        old_state: &State,
+    ) -> Result<()> {
         info!(
             "No keymaps exist for key ('{}'), passing it along..",
             converted_key

src/app/events/mod.rs

@@ -3,7 +3,10 @@ pub mod listeners;
 
 use anyhow::{Context, Result};
 
-use crate::app::{command_interface::Commands, App};
+use crate::{
+    app::{command_interface::Commands, App},
+    ui::ui_trait::TrinitrixUi,
+};
 use cli_log::{trace, warn};
 use crossterm::event::Event as CrosstermEvent;
 use handlers::{command, input};
@@ -18,7 +21,7 @@ pub enum Event {
 }
 
 impl Event {
-    pub async fn handle(self, app: &mut App<'_>) -> Result<EventStatus> {
+    pub async fn handle<U: TrinitrixUi>(self, app: &mut App<U>) -> Result<EventStatus> {
         trace!("Received event to handle: `{:#?}`", &self);
         match self {
             Event::CommandEvent(event, callback_tx) => command::handle(app, &event, callback_tx)

src/app/mod.rs

@@ -3,13 +3,12 @@ pub mod config;
 pub mod events;
 pub mod status;
 
-use std::{collections::HashMap, ffi::c_int, path::PathBuf, sync::OnceLock};
+use std::{collections::HashMap, path::PathBuf, sync::OnceLock};
 
 use anyhow::{Context, Result};
-use cli_log::{info, warn};
+use cli_log::warn;
 use directories::ProjectDirs;
 use keymaps::trie::Node;
-use libloading::{Library, Symbol};
 use tokio::sync::mpsc::{self, Sender};
 use tokio_util::sync::CancellationToken;
 
@@ -22,11 +21,11 @@ use crate::{
         events::{Event, EventStatus},
         status::{State, Status},
     },
-    ui::central,
+    ui::ui_trait::TrinitrixUi,
 };
 
-pub struct App<'runtime> {
+pub struct App<U: TrinitrixUi> {
-    ui: central::UI<'runtime>,
+    ui: U,
     status: Status,
 
     tx: mpsc::Sender<Event>,
@@ -42,8 +41,8 @@ pub struct App<'runtime> {
 
 pub static COMMAND_TRANSMITTER: OnceLock<Sender<Event>> = OnceLock::new();
 
-impl App<'_> {
+impl<U: TrinitrixUi> App<U> {
-    pub fn new() -> Result<Self> {
+    pub fn new(ui: U) -> Result<Self> {
         let (tx, rx) = mpsc::channel(256);
 
         COMMAND_TRANSMITTER
@@ -51,7 +50,7 @@ impl App<'_> {
             .expect("The cell should always be empty at this point");
 
         Ok(Self {
-            ui: central::UI::new()?,
+            ui,
             status: Status::new(),
 
             tx: tx.clone(),
@@ -80,50 +79,23 @@ impl App<'_> {
             self.input_listener_killer.clone(),
         ));
 
-        let config_dir = self.project_dirs.config_dir();
-        let mut lua_config_file = None;
-        if config_dir
-            .try_exists()
-            .context("Failed to search for a config file")?
-        {
-            lua_config_file = Some(config_dir.join("init.lua"));
-            info!("Found config dir: `{}`", config_dir.display());
-        } else {
-            warn!("No config dir found!");
-        }
-
         if let Some(config_file) = cli_lua_config_file {
             config::lua::load(self.tx.clone(), config_file).await?;
-        } else if let Some(config_file) = lua_config_file {
+            warn!("Loading cli config file, will ignore the default locations");
-            info!("Searching for config file at `{}`", config_file.display());
-            if config_file.try_exists().with_context(|| {
-                format!(
-                    "Failed to check, if the lua config file at `{}` exists",
-                    config_file.display()
-                )
-            })? {
-                config::lua::load(self.tx.clone(), config_file).await?;
         } else {
-                warn!("No config file found!");
+            let config_file = config::lua::check_for_config_file(self.project_dirs.config_dir())
+                .await
+                .context("Failed to check for the config file")?;
+
+            if let Some(config) = config_file {
+                config::lua::load(self.tx.clone(), config).await?;
             }
         }
 
         if let Some(plugin) = plugin_path {
-            info!("Loading plugin_main() from {}", plugin.display());
+            config::shared_objects::load(&plugin)
-
+                .with_context(|| format!("Failed to load a pluging at '{}'", plugin.display()))?;
-            unsafe {
-                let lib = Library::new(plugin).context("Failed to load plugin")?;
-                let func: Symbol<unsafe fn() -> c_int> = lib
-                    .get(b"plugin_main")
-                    .context("Plugin does not have a 'plugin_main' symbol")?;
-
-                info!("Starting plugin");
-                let out = func();
-                info!("Plugin finished with: {}", out);
         }
-        }
-
-        self.status.set_state(State::Normal);
 
         loop {
             self.ui.update(&self.status).await?;

src/app/status.rs

@@ -3,8 +3,9 @@ use core::fmt;
 use anyhow::{bail, Result};
 use keymaps::key_repr::Keys;
 
-#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Debug)]
+#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Debug, Default)]
 pub enum State {
+    #[default]
     Normal,
     Insert,
     Command,
@@ -66,7 +67,7 @@ impl fmt::Display for State {
 impl Status {
     pub fn new() -> Self {
         Self {
-            state: State::Normal,
+            state: State::default(),
             status_messages: vec![StatusMessage {
                 content: "Initialized!".to_owned(),
                 is_error: false,

src/cli.rs

@@ -23,4 +23,7 @@ pub struct Args {
 pub enum Command {
     /// Starts the main TUI client
     Start {},
+
+    /// Starts a repl to the trinitry cli interpreter
+    Repl {},
 }

src/main.rs

@@ -4,7 +4,10 @@ mod ui;
 
 use clap::Parser;
 
-use crate::cli::{Args, Command};
+use crate::{
+    cli::{Args, Command},
+    ui::repl::Repl,
+};
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
@@ -14,9 +17,16 @@ async fn main() -> anyhow::Result<()> {
     let command = args.subcommand.unwrap_or(Command::Start {});
     match command {
         Command::Start {} => {
-            let mut app = app::App::new()?;
+            todo!("The full ui is not yet finished");
+            let mut app = app::App::new(Repl::new())?;
 
-            // NOTE(@soispha): The 'None' here is temporary <2024-05-03>
+            // NOTE(@soispha): The `None` here is temporary <2024-05-03>
+            app.run(None, args.plugin_path).await?;
+        }
+        Command::Repl {} => {
+            let mut app = app::App::new(Repl::new())?;
+
+            // NOTE(@soispha): The `None` here is temporary <2024-05-03>
             app.run(None, args.plugin_path).await?;
         }
     };

src/ui/mod.rs

@@ -1,44 +1,2 @@
-pub mod central;
+pub mod ui_trait;
-
+pub mod repl;
-use std::{io, io::Stdout};
-
-use anyhow::{Context, Result};
-use cli_log::info;
-use crossterm::{
-    event::EnableMouseCapture,
-    execute,
-    terminal::{enable_raw_mode, EnterAlternateScreen},
-};
-use tui::{
-    style::{Color, Modifier, Style},
-    widgets::{Block, Borders},
-};
-use tui_textarea::TextArea;
-
-fn terminal_prepare() -> Result<Stdout> {
-    enable_raw_mode().context("Failed to enable raw mode")?;
-    let mut stdout = io::stdout();
-    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
-    info!("Prepared terminal");
-    Ok(stdout)
-}
-
-pub fn textarea_activate(textarea: &mut TextArea) {
-    textarea.set_cursor_line_style(Style::default().add_modifier(Modifier::UNDERLINED));
-    textarea.set_cursor_style(Style::default().add_modifier(Modifier::REVERSED));
-    let b = textarea
-        .block()
-        .cloned()
-        .unwrap_or_else(|| Block::default().borders(Borders::ALL));
-    textarea.set_block(b.style(Style::default()));
-}
-
-pub fn textarea_inactivate(textarea: &mut TextArea) {
-    textarea.set_cursor_line_style(Style::default());
-    textarea.set_cursor_style(Style::default());
-    let b = textarea
-        .block()
-        .cloned()
-        .unwrap_or_else(|| Block::default().borders(Borders::ALL));
-    textarea.set_block(b.style(Style::default().fg(Color::DarkGray)));
-}

src/ui/old/central/mod.rs

@@ -19,6 +19,8 @@ use tui_textarea::TextArea;
 
 use crate::ui::{terminal_prepare, textarea_activate, textarea_inactivate};
 
+use super::ui_trait::TirinitrixUi;
+
 #[derive(Clone, Copy, PartialEq)]
 pub enum InputPosition {
     Status,
@@ -148,6 +150,9 @@ pub struct UI<'a> {
     pub cli: Option<TextArea<'a>>,
 }
 
+impl<'r> TirinitrixUi for UI<'r> {
+}
+
 impl Drop for UI<'_> {
     fn drop(&mut self) {
         info!("Destructing UI");

src/ui/old/mod.rs

@@ -0,0 +1,45 @@
+pub mod central;
+pub mod ui_trait;
+
+use std::{io, io::Stdout};
+
+use anyhow::{Context, Result};
+use cli_log::info;
+use crossterm::{
+    event::EnableMouseCapture,
+    execute,
+    terminal::{enable_raw_mode, EnterAlternateScreen},
+};
+use tui::{
+    style::{Color, Modifier, Style},
+    widgets::{Block, Borders},
+};
+use tui_textarea::TextArea;
+
+fn terminal_prepare() -> Result<Stdout> {
+    enable_raw_mode().context("Failed to enable raw mode")?;
+    let mut stdout = io::stdout();
+    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
+    info!("Prepared terminal");
+    Ok(stdout)
+}
+
+pub fn textarea_activate(textarea: &mut TextArea) {
+    textarea.set_cursor_line_style(Style::default().add_modifier(Modifier::UNDERLINED));
+    textarea.set_cursor_style(Style::default().add_modifier(Modifier::REVERSED));
+    let b = textarea
+        .block()
+        .cloned()
+        .unwrap_or_else(|| Block::default().borders(Borders::ALL));
+    textarea.set_block(b.style(Style::default()));
+}
+
+pub fn textarea_inactivate(textarea: &mut TextArea) {
+    textarea.set_cursor_line_style(Style::default());
+    textarea.set_cursor_style(Style::default());
+    let b = textarea
+        .block()
+        .cloned()
+        .unwrap_or_else(|| Block::default().borders(Borders::ALL));
+    textarea.set_block(b.style(Style::default().fg(Color::DarkGray)));
+}

src/ui/repl/mod.rs

@@ -0,0 +1,54 @@
+use anyhow::Result;
+use cli_log::info;
+use keymaps::key_repr::{Key, KeyValue};
+
+use crate::app::status::Status;
+
+use super::ui_trait::TrinitrixUi;
+
+pub struct Repl {
+    current_input: String,
+    enter_new_line: bool,
+}
+
+impl Repl {
+    pub fn new() -> Self {
+        println!("Welcome to the Trinitrix repl! You can now enter trinitry commands.");
+        print!("{}", Self::prompt(&Status::new()));
+
+        Repl {
+            current_input: String::new(),
+            enter_new_line: false,
+        }
+    }
+    pub fn prompt(status: &Status) -> String {
+        format!("{}> ", status.state())
+    }
+}
+
+impl TrinitrixUi for Repl {
+    async fn update(&mut self, status: &Status) -> Result<()> {
+        if self.enter_new_line {
+            info!("Got '{}' from user in repl.", self.current_input);
+
+            self.enter_new_line = false;
+            self.current_input = String::new();
+
+            print!("{}", Self::prompt(status));
+        }
+
+        Ok(())
+    }
+
+    fn input(&mut self, input: Key) {
+        if let Some(value) = input.value() {
+            if let KeyValue::Char(ch) = value {
+                self.current_input.push(*ch);
+            } else if let KeyValue::Enter = value {
+                self.enter_new_line = true;
+            }
+        } else {
+            info!("User wrote: '{}'", input.to_string_repr());
+        }
+    }
+}

src/ui/ui_trait/mod.rs

@@ -0,0 +1,9 @@
+use anyhow::Result;
+use keymaps::key_repr::Key;
+
+use crate::app::status::Status;
+
+pub trait TrinitrixUi {
+    async fn update(&mut self, status: &Status) -> Result<()>;
+    fn input(&mut self, input: Key);
+}