First commit in rust

2026-02-19 13:51:07 +08:00
commit c37ca9ba52
73 changed files with 9737 additions and 0 deletions
--- a/backchannel-client/src/tui/views/channel.rs
+++ b/backchannel-client/src/tui/views/channel.rs
@@ -0,0 +1,147 @@
+use ratatui::{
+    layout::{Constraint, Direction, Layout},
+    style::{Color, Modifier, Style},
+    text::{Line, Span},
+    widgets::{Block, Borders, List, ListItem, ListState, Paragraph},
+    Frame,
+};
+
+use crate::tui::app::App;
+
+pub fn draw(frame: &mut Frame, app: &App) {
+    let area = frame.size();
+
+    // Split into sidebar | main column
+    let columns = Layout::default()
+        .direction(Direction::Horizontal)
+        .constraints([Constraint::Length(22), Constraint::Min(0)])
+        .split(area);
+
+    draw_sidebar(frame, app, columns[0]);
+    draw_main(frame, app, columns[1]);
+}
+
+fn draw_sidebar(frame: &mut Frame, app: &App, area: ratatui::layout::Rect) {
+    let rows = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints([Constraint::Min(0), Constraint::Length(6)])
+        .split(area);
+
+    // ── Channel list ────────────────────────────────────────────────────
+    let items: Vec<ListItem> = app
+        .channels
+        .iter()
+        .enumerate()
+        .map(|(i, (_, name))| {
+            let style = if i == app.selected_channel {
+                Style::default().fg(Color::Yellow).add_modifier(Modifier::BOLD)
+            } else {
+                Style::default()
+            };
+            ListItem::new(format!("# {}", name)).style(style)
+        })
+        .collect();
+
+    let mut state = ListState::default();
+    state.select(Some(app.selected_channel));
+
+    let channels = List::new(items)
+        .block(
+            Block::default()
+                .title(" Channels ")
+                .borders(Borders::ALL)
+                .style(Style::default().fg(Color::Cyan)),
+        )
+        .highlight_style(Style::default().add_modifier(Modifier::BOLD));
+
+    frame.render_stateful_widget(channels, rows[0], &mut state);
+
+    // ── Online users ─────────────────────────────────────────────────────
+    let user_items: Vec<ListItem> = app
+        .online_users
+        .iter()
+        .map(|(_, name)| ListItem::new(format!("● {}", name)))
+        .collect();
+
+    let online = List::new(user_items).block(
+        Block::default()
+            .title(" Online ")
+            .borders(Borders::ALL)
+            .style(Style::default().fg(Color::Green)),
+    );
+    frame.render_widget(online, rows[1]);
+}
+
+fn draw_main(frame: &mut Frame, app: &App, area: ratatui::layout::Rect) {
+    let rows = Layout::default()
+        .direction(Direction::Vertical)
+        .constraints([
+            Constraint::Length(1), // channel title bar
+            Constraint::Min(0),    // messages
+            Constraint::Length(3), // input box
+            Constraint::Length(1), // status bar
+        ])
+        .split(area);
+
+    // ── Title bar ────────────────────────────────────────────────────────
+    let title = app
+        .current_channel()
+        .map(|(_, name)| format!(" # {} ", name))
+        .unwrap_or_else(|| " No channel selected ".into());
+
+    let title_bar = Paragraph::new(title)
+        .style(Style::default().fg(Color::White).bg(Color::DarkGray).add_modifier(Modifier::BOLD));
+    frame.render_widget(title_bar, rows[0]);
+
+    // ── Messages ─────────────────────────────────────────────────────────
+    let msgs: Vec<ListItem> = app
+        .current_channel_messages()
+        .map(|deque| {
+            deque
+                .iter()
+                .map(|m| {
+                    ListItem::new(Line::from(vec![
+                        Span::styled(
+                            format!("{} ", m.timestamp),
+                            Style::default().fg(Color::DarkGray),
+                        ),
+                        Span::styled(
+                            format!("{}: ", m.author),
+                            Style::default().fg(Color::Cyan).add_modifier(Modifier::BOLD),
+                        ),
+                        Span::raw(m.content.clone()),
+                    ]))
+                })
+                .collect()
+        })
+        .unwrap_or_default();
+
+    let message_count = msgs.len();
+    let mut list_state = ListState::default();
+    if message_count > 0 {
+        list_state.select(Some(message_count - 1));
+    }
+
+    let messages = List::new(msgs)
+        .block(Block::default().borders(Borders::LEFT))
+        .highlight_style(Style::default());
+    frame.render_stateful_widget(messages, rows[1], &mut list_state);
+
+    // ── Input box ─────────────────────────────────────────────────────────
+    let input = Paragraph::new(app.input.as_str())
+        .block(
+            Block::default()
+                .borders(Borders::ALL)
+                .title(" Message (Enter to send) "),
+        );
+    frame.render_widget(input, rows[2]);
+
+    // ── Status bar ────────────────────────────────────────────────────────
+    let status_text = app
+        .status_msg
+        .as_deref()
+        .unwrap_or("Ctrl-Q: quit  |  ↑↓: channels  |  Esc: dismiss");
+    let status = Paragraph::new(status_text)
+        .style(Style::default().fg(Color::DarkGray));
+    frame.render_widget(status, rows[3]);
+}