refactored

src/main.rs

@@ -1,72 +1,141 @@
-use std::{io, time::{Duration, Instant}};
-use crossterm::event::{self, Event, KeyCode, KeyEventKind};
-use ratatui::{DefaultTerminal, Frame};
-use ratatui::layout::{Constraint, Layout, Spacing};
-use ratatui::symbols::merge::MergeStrategy;
-use ratatui::widgets::Block;
+use std::{
+    io,
+    time::{Duration, Instant},
+};
+
+use crossterm::{
+    event::{self, Event, KeyCode, KeyEventKind},
+    execute,
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+};
+use ratatui::{
+    layout::{Constraint, Layout, Rect, Spacing},
+    symbols::merge::MergeStrategy,
+    widgets::{Block, Paragraph},
+    Frame, Terminal,
+};
+use ratatui::backend::CrosstermBackend;
 
 #[derive(Default)]
 struct App {
     should_exit: bool,
-    // navigation state goes here (selected index, velocity, etc.)
+    status: String,
 }
 
 fn main() -> io::Result<()> {
-    let tick_rate = Duration::from_millis(16); // ~60Hz
+    // Terminal setup
+    enable_raw_mode()?;
+    let mut stdout = io::stdout();
+    execute!(stdout, EnterAlternateScreen)?;
+    let backend = CrosstermBackend::new(stdout);
+    let mut terminal = Terminal::new(backend)?;
+    terminal.clear()?;
+
+    let res = run_app(&mut terminal);
+
+    // Terminal restore (always)
+    disable_raw_mode()?;
+    execute!(io::stdout(), LeaveAlternateScreen)?;
+    terminal.show_cursor()?;
+
+    res
+}
+
+fn run_app(terminal: &mut Terminal<CrosstermBackend<io::Stdout>>) -> io::Result<()> {
+    let tick_rate = Duration::from_millis(16); // ~60fps
     let mut last_tick = Instant::now();
 
-    ratatui::run(|terminal: &mut DefaultTerminal| {
-        let mut app = App::default();
+    let mut app = App {
+        status: "Press q to quit".to_string(),
+        ..Default::default()
+    };
 
-        while !app.should_exit {
-            terminal.draw(|f| render(f))?;
+    while !app.should_exit {
+        terminal.draw(|f| ui(f, &app))?;
 
-            // Non-blocking input with timeout until next tick
-            let timeout = tick_rate.saturating_sub(last_tick.elapsed());
-            if event::poll(timeout)? {
-                if let Event::Key(key) = event::read()? {
-                    if key.kind == KeyEventKind::Press {
-                        match key.code {
-                            KeyCode::Char('q') => app.should_exit = true,
-                            
-                            // KeyCode::Up/Down etc => update nav intent/state
-                            _ => {}
-                        }
-                    }
+        let timeout = tick_rate.saturating_sub(last_tick.elapsed());
+        if event::poll(timeout)? {
+            if let Event::Key(key) = event::read()? {
+                if key.kind == KeyEventKind::Press {
+                    handle_key(&mut app, key.code);
                 }
             }
-
-            // Tick for time-based navigation / animations
-            if last_tick.elapsed() >= tick_rate {
-                // app.on_tick(last_tick.elapsed());
-                last_tick = Instant::now();
-            }
         }
 
-        Ok(())
-    })
+        if last_tick.elapsed() >= tick_rate {
+            // tick-based updates go here later (smooth nav, download polling, etc.)
+            last_tick = Instant::now();
+        }
+    }
+
+    Ok(())
 }
 
-fn render(frame: &mut Frame) {
-    use Constraint::{Fill};
-
-    let [top_area, rest_area] = Layout::vertical([Fill(1), Fill(12)]).areas(frame.area());
-
-    let [main_area, output_area] = Layout::vertical([Fill(9), Fill(3)])
-        .spacing(Spacing::Overlap(1))
-        .areas(rest_area);
-
-    let [left_main_area, right_main_area] = Layout::horizontal([Fill(2), Fill(5)])
-        .spacing(Spacing::Overlap(1))
-        .areas(main_area);
-
-    let [left_output_area, right_output_area] = Layout::horizontal([Fill(5), Fill(1)])
-        .spacing(Spacing::Overlap(1))
-        .areas(output_area);
-
-    frame.render_widget(Block::bordered(), top_area);
-    frame.render_widget(Block::bordered().merge_borders(MergeStrategy::Exact), left_output_area);
-    frame.render_widget(Block::bordered().merge_borders(MergeStrategy::Exact), right_output_area);
-    frame.render_widget(Block::bordered().merge_borders(MergeStrategy::Exact), left_main_area);
-    frame.render_widget(Block::bordered().merge_borders(MergeStrategy::Exact), right_main_area);
+fn handle_key(app: &mut App, code: KeyCode) {
+    match code {
+        KeyCode::Char('q') => app.should_exit = true,
+        KeyCode::Char('h') => app.status = "hi".to_string(),
+        _ => {}
+    }
+}
+
+fn ui(frame: &mut Frame, app: &App) {
+    let area = frame.area();
+    let panes = layout(area);
+
+    // Top
+    frame.render_widget(Block::bordered().title("cj-jftui"), panes.top);
+
+    // Main
+    frame.render_widget(Block::bordered().title("List").merge_borders(MergeStrategy::Exact), panes.left_main);
+    frame.render_widget(Block::bordered().title("Details").merge_borders(MergeStrategy::Exact), panes.right_main);
+
+    // Bottom
+    frame.render_widget(
+        Paragraph::new(app.status.as_str())
+            .block(Block::bordered().title("Status").merge_borders(MergeStrategy::Exact)),
+        panes.left_output,
+    );
+    frame.render_widget(
+        Block::bordered().title("Info").merge_borders(MergeStrategy::Exact),
+        panes.right_output,
+    );
+}
+
+struct Panes {
+    top: Rect,
+    left_main: Rect,
+    right_main: Rect,
+    left_output: Rect,
+    right_output: Rect,
+}
+
+fn layout(area: Rect) -> Panes {
+    use Constraint::Fill;
+
+    let [top, bottom] =
+        Layout::vertical([Fill(1), Fill(12)]).areas(area);
+
+    let [main_area, output_area] =
+        Layout::vertical([Fill(9), Fill(3)])
+            .spacing(Spacing::Overlap(1))
+            .areas(bottom);
+
+    let [left_main, right_main] =
+        Layout::horizontal([Fill(2), Fill(5)])
+            .spacing(Spacing::Overlap(1))
+            .areas(main_area);
+
+    let [left_output, right_output] =
+        Layout::horizontal([Fill(5), Fill(1)])
+            .spacing(Spacing::Overlap(1))
+            .areas(output_area);
+
+    Panes {
+        top,
+        left_main,
+        right_main,
+        left_output,
+        right_output,
+    }
 }