tokmesh-cli 0.1.0

CLI and TUI for tokmesh — AI token usage analytics
Documentation 
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use ratatui::prelude::*;
use ratatui::widgets::{Block, Borders, Paragraph};

use super::widgets::{format_cost, format_tokens};
use crate::tui::app::App;
use crate::tui::data::{aggregate_by_period, aggregate_by_weekday, find_peak_hour};

pub fn render(frame: &mut Frame, app: &mut App, area: Rect) {
    let block = Block::default()
        .borders(Borders::ALL)
        .border_style(Style::default().fg(app.theme.border))
        .title(Span::styled(
            " Hourly Profile ",
            Style::default()
                .fg(app.theme.accent)
                .add_modifier(Modifier::BOLD),
        ))
        .style(Style::default().bg(app.theme.background));

    let inner = block.inner(area);
    frame.render_widget(block, area);

    if app.data.hourly.is_empty() {
        let empty_msg = Paragraph::new("No hourly usage data found. Press 'r' to refresh.")
            .style(Style::default().fg(app.theme.muted))
            .alignment(Alignment::Center);
        frame.render_widget(empty_msg, inner);
        return;
    }

    let hourly = &app.data.hourly;
    let total_tokens = app.data.total_tokens;
    let total_cost = app.data.total_cost;

    // Calculate dynamic bar width to use most of the available width
    // Period line: label (10) + hour_range (12) + spaces (4) + percentage (8) = 34 chars overhead
    // Weekday line: day name (10) + spaces (3) + percentage (8) = 21 chars overhead
    // Use period overhead since it's larger, then subtract a margin for safety
    let overhead = 36; // 34 + small margin
    let bar_width = (inner.width as usize)
        .saturating_sub(overhead)
        .clamp(20, 80);

    // Get date range
    let min_date = hourly.iter().map(|h| h.datetime.date()).min();
    let max_date = hourly.iter().map(|h| h.datetime.date()).max();
    let date_range = match (min_date, max_date) {
        (Some(mn), Some(mx)) if mn == mx => mn.format("%Y-%m-%d").to_string(),
        (Some(mn), Some(mx)) => format!("{} to {}", mn.format("%Y-%m-%d"), mx.format("%Y-%m-%d")),
        _ => "No data".to_string(),
    };

    // Aggregate data
    let periods = aggregate_by_period(hourly);
    let weekdays = aggregate_by_weekday(hourly);
    let peak_hour = find_peak_hour(hourly);

    // Build content
    let mut lines: Vec<Line> = Vec::new();

    // Title line
    lines.push(Line::from(vec![
        Span::styled(
            "Hourly Profile",
            Style::default()
                .fg(app.theme.accent)
                .add_modifier(Modifier::BOLD),
        ),
        Span::styled("  ", Style::default()),
        Span::styled(&date_range, Style::default().fg(app.theme.muted)),
    ]));
    lines.push(Line::from(""));

    // Summary line
    let summary_spans = vec![
        Span::styled(
            format!("{} hours", hourly.len()),
            Style::default().fg(Color::Cyan),
        ),
        Span::styled("  |  ", Style::default().fg(app.theme.muted)),
        Span::styled(
            format!("{} total tokens", format_tokens(total_tokens)),
            Style::default().fg(Color::Cyan),
        ),
        Span::styled("  |  ", Style::default().fg(app.theme.muted)),
        Span::styled(
            format!("{} total cost", format_cost(total_cost)),
            Style::default().fg(Color::Green),
        ),
    ];
    lines.push(Line::from(summary_spans));
    lines.push(Line::from(""));

    // Time-of-day breakdown
    lines.push(Line::from(vec![Span::styled(
        "When You Work Most",
        Style::default()
            .fg(app.theme.accent)
            .add_modifier(Modifier::BOLD),
    )]));
    lines.push(Line::from(""));

    let max_period_tokens = periods.iter().map(|p| p.total_tokens).max().unwrap_or(1);

    for period in &periods {
        let percentage = if total_tokens > 0 {
            period.total_tokens as f64 / total_tokens as f64 * 100.0
        } else {
            0.0
        };
        let bar_filled = if max_period_tokens > 0 {
            (period.total_tokens as f64 / max_period_tokens as f64 * bar_width as f64).round()
                as usize
        } else {
            0
        };
        let bar_filled = bar_filled.min(bar_width);
        let bar_empty = bar_width - bar_filled;

        let bar = format!("{}{}", "█".repeat(bar_filled), "░".repeat(bar_empty));

        lines.push(Line::from(vec![
            Span::styled(
                format!("  {:<10}", period.label),
                Style::default().fg(app.theme.foreground),
            ),
            Span::styled(
                format!("{:>12}", period.hour_range),
                Style::default().fg(app.theme.muted),
            ),
            Span::styled("  ", Style::default()),
            Span::styled(bar, Style::default().fg(Color::Green)),
            Span::styled("  ", Style::default()),
            Span::styled(
                format!("{:>5.1}%", percentage),
                Style::default().fg(Color::Yellow),
            ),
        ]));
    }
    lines.push(Line::from(""));

    // Weekday breakdown
    lines.push(Line::from(vec![Span::styled(
        "Most Productive Day",
        Style::default()
            .fg(app.theme.accent)
            .add_modifier(Modifier::BOLD),
    )]));
    lines.push(Line::from(""));

    let max_weekday_tokens = weekdays.iter().map(|w| w.total_tokens).max().unwrap_or(1);

    // Find best weekday
    let best_weekday = weekdays
        .iter()
        .max_by_key(|w| w.total_tokens)
        .map(|w| w.day)
        .unwrap_or("Monday");

    for weekday in &weekdays {
        let percentage = if total_tokens > 0 {
            weekday.total_tokens as f64 / total_tokens as f64 * 100.0
        } else {
            0.0
        };
        let bar_filled = if max_weekday_tokens > 0 {
            (weekday.total_tokens as f64 / max_weekday_tokens as f64 * bar_width as f64).round()
                as usize
        } else {
            0
        };
        let bar_filled = bar_filled.min(bar_width);
        let bar_empty = bar_width - bar_filled;

        let bar = format!("{}{}", "█".repeat(bar_filled), "░".repeat(bar_empty));

        let is_best = weekday.day == best_weekday;

        lines.push(Line::from(vec![
            Span::styled(
                format!("  {:<10}", weekday.day),
                Style::default().fg(if is_best {
                    Color::Yellow
                } else {
                    app.theme.foreground
                }),
            ),
            Span::styled(bar, Style::default().fg(Color::Green)),
            Span::styled("  ", Style::default()),
            Span::styled(
                format!("{:>5.1}%", percentage),
                Style::default().fg(Color::Yellow),
            ),
        ]));
    }
    lines.push(Line::from(""));

    // Peak hour insight
    if let Some((hour, tokens, cost)) = peak_hour {
        lines.push(Line::from(vec![
            Span::styled(
                "Peak Hour: ",
                Style::default()
                    .fg(app.theme.accent)
                    .add_modifier(Modifier::BOLD),
            ),
            Span::styled(
                format!("{:02}:00-{:02}:59", hour, hour),
                Style::default().fg(Color::Yellow),
            ),
            Span::styled("  (", Style::default().fg(app.theme.muted)),
            Span::styled(format_tokens(tokens), Style::default().fg(Color::Cyan)),
            Span::styled(" tokens, ", Style::default().fg(app.theme.muted)),
            Span::styled(format_cost(cost), Style::default().fg(Color::Green)),
            Span::styled(")", Style::default().fg(app.theme.muted)),
        ]));
    }

    // Legend
    lines.push(Line::from(""));
    lines.push(Line::from(vec![
        Span::styled("Legend: ", Style::default().fg(app.theme.muted)),
        Span::styled("░", Style::default().fg(app.theme.muted)),
        Span::styled(" low  ", Style::default().fg(app.theme.muted)),
        Span::styled("█", Style::default().fg(Color::Green)),
        Span::styled(" high", Style::default().fg(app.theme.muted)),
    ]));

    // Hint
    lines.push(Line::from(""));
    lines.push(Line::from(vec![
        Span::styled("Press ", Style::default().fg(app.theme.muted)),
        Span::styled("[v]", Style::default().fg(Color::Yellow)),
        Span::styled(
            " to switch to table view",
            Style::default().fg(app.theme.muted),
        ),
    ]));

    let paragraph = Paragraph::new(lines).alignment(Alignment::Left);
    frame.render_widget(paragraph, inner);
}