feat(tui): Implement project listing and selection

Cargo.lock

@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 3
 
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@@ -38,7 +44,7 @@ version = "1.1.2"
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 checksum = "79947af37f4177cfead1110013d678905c37501914fba0efea834c3fe9a8d60c"
 dependencies = [
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+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -48,7 +54,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2109dbce0e72be3ec00bed26e6a7479ca384ad226efdd66db8fa2e3a38c83125"
 dependencies = [
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- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
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+
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@@ -140,6 +440,8 @@ dependencies = [
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+ "crossterm",
+ "ratatui",
  "serde",
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@@ -152,6 +454,67 @@ dependencies = [
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 name = "windows-sys"
 version = "0.59.0"
@@ -273,3 +766,9 @@ name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"

Cargo.toml

@@ -8,6 +8,8 @@ publish = false
 [dependencies]
 anyhow = "1.0"
 bincode = "1.3"
+ratatui = "0.29"
+crossterm = "0.28"
 
 [dependencies.serde]
 version = "1.0"

src/dirs.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use std::fs;
 use std::path::PathBuf;
 use std::sync::OnceLock;

src/main.rs

@@ -1,4 +1,5 @@
 mod dirs;
+mod tui;
 
 
 use std::fs;
@@ -11,7 +12,7 @@ use clap::{Parser, Subcommand};
 #[derive(Debug, Parser)]
 pub struct Args {
     #[command(subcommand)]
-    cmd: Command,
+    cmd: Option<Command>,
 }
 
 #[derive(Debug, Subcommand)]
@@ -33,11 +34,11 @@ struct Projects {
 fn main() -> Result<()> {
     let args = Args::parse();
 
-    let mut projects = read_projects_file()?;
+    let projects = read_projects_file()?;
 
     let result = match &args.cmd {
-        Command::Add { path } => add_project(&mut projects, path),
+        Some(cmd) => handle_subcommands(projects, cmd),
-        Command::List => list_projects(&projects),
+        None => tui::run(projects),
     };
 
     if let Err(err) = result {
@@ -49,6 +50,20 @@ fn main() -> Result<()> {
 }
 
 
+fn handle_subcommands(mut projects: Projects, cmd: &Command) -> Result<()> {
+    match cmd {
+        Command::Add { path } => {
+            add_project(&mut projects, path)?;
+        }
+        Command::List => {
+            list_projects(&projects)?;
+        }
+    }
+
+    Ok(())
+}
+
+
 fn add_project<P>(projects: &mut Projects, path: P) -> Result<()>
 where
     P: Into<PathBuf>,

src/tui.rs

@@ -0,0 +1,147 @@
+use std::path::PathBuf;
+use std::sync::mpsc;
+use std::time::Duration;
+
+use anyhow::Result;
+use crossterm::event::{self, Event, KeyCode, KeyEvent};
+use ratatui::layout::Constraint;
+use ratatui::style::{Color, Style};
+use ratatui::widgets::{Block, Borders, Cell, Row, Table, TableState};
+use ratatui::Frame;
+
+use crate::Projects;
+
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+enum Message {
+    Exit,
+    Noop,
+    MoveDown,
+    MoveUp,
+    Confirm,
+}
+
+
+struct State {
+    projects: Projects,
+    should_exit: bool,
+    project_table: TableState,
+    selected_project: Option<PathBuf>,
+}
+
+impl State {
+    pub fn new(projects: Projects) -> Self {
+        let project_table = TableState::new().with_selected(Some(0));
+
+        Self {
+            projects,
+            should_exit: false,
+            project_table,
+            selected_project: None,
+        }
+    }
+}
+
+
+pub fn run(projects: Projects) -> Result<()> {
+    let mut term = ratatui::init();
+    let mut state = State::new(projects);
+
+    let (mut msg_tx, mut msg_rx) = mpsc::channel();
+
+    loop {
+        handle_messages(&mut state, &mut msg_rx)?;
+
+        if state.should_exit {
+            break;
+        }
+
+        term.draw(|frame| draw(&mut state, frame))?;
+
+        if !event::poll(Duration::from_millis(10))? {
+            continue;
+        }
+
+        if let Event::Key(key_event) = event::read()? {
+            handle_event(&mut msg_tx, key_event);
+        }
+    }
+
+    ratatui::restore();
+
+    if let Some(path) = state.selected_project {
+        println!("{}", path.display());
+    }
+
+    Ok(())
+}
+
+
+fn handle_event(tx: &mut mpsc::Sender<Message>, event: KeyEvent) {
+    let msg = match event.code {
+        KeyCode::Char('q') | KeyCode::Esc => Message::Exit,
+        KeyCode::Char(' ') | KeyCode::Enter => Message::Confirm,
+        KeyCode::Char('j') | KeyCode::Down => Message::MoveDown,
+        KeyCode::Char('k') | KeyCode::Up => Message::MoveUp,
+        _ => Message::Noop,
+    };
+
+    tx.send(msg).unwrap();
+}
+
+
+fn handle_messages(state: &mut State, rx: &mut mpsc::Receiver<Message>) -> Result<()> {
+    let msg = match rx.try_recv() {
+        Ok(msg) => msg,
+        Err(mpsc::TryRecvError::Empty) => {
+            return Ok(());
+        }
+        Err(mpsc::TryRecvError::Disconnected) => {
+            state.should_exit = true;
+            return Ok(());
+        }
+    };
+
+    match msg {
+        Message::Exit => {
+            state.should_exit = true;
+        }
+        Message::MoveDown => {
+            state.project_table.select_next();
+        }
+        Message::MoveUp => {
+            state.project_table.select_previous();
+        }
+        Message::Confirm => {
+            if let Some(selected) = state.project_table.selected() {
+                if let Some(project_path) = state.projects.list.get(selected) {
+                    state.should_exit = true;
+                    state.selected_project = Some(project_path.clone());
+                };
+            }
+        }
+        _ => (),
+    }
+
+    Ok(())
+}
+
+
+fn draw(state: &mut State, frame: &mut Frame) {
+    let block = Block::default().borders(Borders::ALL);
+
+    let rows = state.projects.list.iter().map(|project| {
+        let project_path = project.to_str().unwrap();
+        Row::new([Cell::new(project_path)])
+    });
+
+    let widths = [Constraint::Min(20)];
+
+    let table_highlight = Style::default().fg(Color::Blue);
+
+    let table = Table::new(rows, widths)
+        .block(block)
+        .row_highlight_style(table_highlight);
+
+    frame.render_stateful_widget(table, frame.area(), &mut state.project_table);
+}