Add Ratatui terminal application

crates/tui/src/main.rs

@@ -0,0 +1,81 @@
+mod app;
+mod editor;
+mod ui;
+
+use std::{env, error::Error, io, time::Duration};
+
+use crossterm::{
+    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyEventKind},
+    execute,
+};
+use gotcha_gitea::Config;
+
+const HELP: &str = "\
+Gotcha TUI
+
+Usage: gotcha-tui [--server SERVER]
+
+Keyboard:
+  1..5              switch Home, Issues, Repos, PRs, Milestones
+  j/k, arrows       move selection
+  n/p or ]/[        next/previous page
+  Enter             open selected item
+  Backspace         go back (edits text inside an editor)
+  a/e/c/x/d         add, edit, comment, toggle state, delete
+  /, v, b, *        filters, activity filter, branch, repository favorite
+  f                 browse files from a repository commit view
+  r                 reload
+  s                 choose or manage servers
+  ,                 edit TUI preferences
+  q                 back, or quit from a root pane
+
+Editors use Tab/Shift-Tab between fields, normal cursor/editing keys, Ctrl-S to
+save, and Esc to cancel. Mouse clicks select items, double-click opens them,
+and the scroll wheel moves through lists.";
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error>> {
+    let requested_server = parse_args()?;
+    let config = Config::load()?;
+    let mut app = app::App::new(config, requested_server.as_deref()).await?;
+
+    let mut terminal = ratatui::init();
+    execute!(io::stdout(), EnableMouseCapture)?;
+    let result = run(&mut terminal, &mut app).await;
+    execute!(io::stdout(), DisableMouseCapture)?;
+    ratatui::restore();
+    result
+}
+
+async fn run(
+    terminal: &mut ratatui::DefaultTerminal,
+    app: &mut app::App,
+) -> Result<(), Box<dyn Error>> {
+    while !app.should_quit {
+        terminal.draw(|frame| ui::draw(frame, app))?;
+        if event::poll(Duration::from_millis(100))? {
+            match event::read()? {
+                Event::Key(key) if key.kind == KeyEventKind::Press => app.handle_key(key).await,
+                Event::Mouse(mouse) => app.handle_mouse(mouse).await,
+                Event::Resize(_, _) => {}
+                _ => {}
+            }
+        } else if app.should_auto_reload() {
+            app.reload().await;
+        }
+    }
+    Ok(())
+}
+
+fn parse_args() -> Result<Option<String>, String> {
+    let args: Vec<_> = env::args().skip(1).collect();
+    match args.as_slice() {
+        [] => Ok(None),
+        [help] if matches!(help.as_str(), "-h" | "--help" | "help") => {
+            println!("{HELP}");
+            std::process::exit(0);
+        }
+        [option, server] if option == "--server" => Ok(Some(server.clone())),
+        _ => Err(format!("invalid arguments\n\n{HELP}")),
+    }
+}