init: Rust/Ratatui TUI project scaffold with nix flake

src/main.rs

@@ -0,0 +1,56 @@
+use std::io;
+
+use color_eyre::Result;
+use crossterm::{
+    event::{self, Event, KeyCode, KeyEventKind},
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+    ExecutableCommand,
+};
+use ratatui::{prelude::*, widgets::*};
+
+fn main() -> Result<()> {
+    color_eyre::install()?;
+
+    enable_raw_mode()?;
+    io::stdout().execute(EnterAlternateScreen)?;
+
+    let mut terminal = Terminal::new(CrosstermBackend::new(io::stdout()))?;
+
+    let result = run(&mut terminal);
+
+    disable_raw_mode()?;
+    io::stdout().execute(LeaveAlternateScreen)?;
+
+    result
+}
+
+fn run(terminal: &mut Terminal<CrosstermBackend<io::Stdout>>) -> Result<()> {
+    loop {
+        terminal.draw(ui)?;
+
+        if let Event::Key(key) = event::read()? {
+            if key.kind != KeyEventKind::Press {
+                continue;
+            }
+            match key.code {
+                KeyCode::Char('q') => return Ok(()),
+                _ => {}
+            }
+        }
+    }
+}
+
+fn ui(frame: &mut Frame) {
+    let area = frame.area();
+
+    let block = Block::bordered()
+        .title(" ui-agregator ")
+        .title_alignment(Alignment::Center)
+        .border_type(BorderType::Rounded);
+
+    let text = Paragraph::new("press q to quit")
+        .alignment(Alignment::Center)
+        .block(block);
+
+    frame.render_widget(text, area);
+}