nexus-chat 0.1.9

A local-first terminal chat app for deep research and multi-agent work
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use crossterm::event::{KeyCode, KeyEvent};
use ratatui::Frame;
use ratatui::style::{Color, Modifier, Style};
use ratatui::text::{Line, Span};
use ratatui::widgets::Paragraph;

use nexus_core::app::{App, Popup};

use super::chrome;

/// Context breakdown popup (Ctrl+I): estimated tokens spent on system
/// instructions, memory, conversation, and (pending) skills.
pub fn render(f: &mut Frame, app: &App) {
    let area = crate::ui::centered(f.area(), chrome::SMALL.0, chrome::SMALL.1);
    let b = app.context_breakdown();
    let dim = Style::default().fg(app.theme.fg_dim);

    let pct_of = |tok: u64| -> String {
        match b.limit.filter(|&l| l > 0) {
            Some(l) => format!(" ({}%)", tok * 100 / l),
            None => String::new(),
        }
    };
    let row = |label: &'static str, tok: u64, color: Color| -> Line<'static> {
        Line::from(vec![
            Span::styled(format!("{label:<13}"), Style::default().fg(app.theme.fg)),
            Span::styled(crate::ui::humanize(tok), Style::default().fg(color)),
            Span::styled(pct_of(tok), dim),
        ])
    };

    let mut lines = vec![
        row("System", b.system_tokens, app.theme.accent),
        row("Memory", b.memory_tokens, app.theme.accent2),
        row("Skills", b.skills_tokens, app.theme.warning),
        row("Conversation", b.conversation_tokens, app.theme.success),
    ];
    if b.compacted {
        lines.push(Line::from(Span::styled(
            "  ⤷ this session has been auto-compacted — press v to view/edit the digest",
            dim,
        )));
    }
    lines.push(Line::from(""));
    let total = b.system_tokens + b.memory_tokens + b.skills_tokens + b.conversation_tokens;
    let limit_s = b.limit.map_or_else(|| "?".to_string(), crate::ui::humanize);
    lines.push(Line::from(vec![
        Span::styled(
            "Total        ",
            Style::default()
                .fg(app.theme.fg)
                .add_modifier(Modifier::BOLD),
        ),
        Span::styled(
            format!("{} / {}", crate::ui::humanize(total), limit_s),
            Style::default().fg(app.theme.warning),
        ),
    ]));

    let hint = if b.compacted {
        "v digest · Esc close"
    } else {
        "Ctrl+G toggle · Esc close"
    };
    let inner = chrome::render_hinted(
        f,
        area,
        chrome::popup_title(app, "📊", "context"),
        hint,
        app,
        true,
        chrome::Tone::Normal,
    );
    f.render_widget(Paragraph::new(lines), inner);
}

pub fn handle_key(app: &mut App, key: KeyEvent) {
    if key.code == KeyCode::Esc {
        app.popup = Popup::None;
    }
}