opencrabs 0.3.9

//! Usage dashboard card renderers
//!
//! Each card is a self-contained render function that takes data + area and draws into a Frame.

use super::data::{
    ActivityStats, DailyStats, DashboardData, ModelStats, ProjectStats, ToolStats, fmt_cost,
    fmt_tokens,
};
use ratatui::{
    Frame,
    layout::{Alignment, Rect},
    style::{Color, Modifier, Style},
    text::{Line, Span},
    widgets::{Block, Borders, Paragraph, Wrap},
};

const LABEL: Style = Style::new().fg(Color::DarkGray);
const BOLD: Style = Style::new().fg(Color::Cyan).add_modifier(Modifier::BOLD);
const DIM: Style = Style::new().fg(Color::DarkGray);
const ACCENT: Style = Style::new().fg(Color::Rgb(215, 100, 20));

fn card_block(title: &str, focused: bool) -> Block<'_> {
    let border_color = if focused {
        Color::Rgb(215, 100, 20)
    } else {
        Color::DarkGray
    };
    Block::default()
        .borders(Borders::ALL)
        .border_style(Style::default().fg(border_color))
        .title(Span::styled(
            format!(" {} ", title),
            if focused { ACCENT } else { LABEL },
        ))
}

// ── Summary Bar ──────────────────────────────────────────────────────────────

pub fn render_summary(f: &mut Frame, data: &DashboardData, area: Rect, period_label: &str) {
    let s = &data.summary;
    let version = crate::VERSION;
    let line = Line::from(vec![
        Span::styled(format!("v{version}  "), ACCENT),
        Span::styled("Tokens: ", LABEL),
        Span::styled(fmt_tokens(s.total_tokens), BOLD),
        Span::styled("  Cost: ", LABEL),
        Span::styled(fmt_cost(s.total_cost), BOLD),
        Span::styled("  Sessions: ", LABEL),
        Span::styled(format!("{}", s.session_count), BOLD),
        Span::styled("  Calls: ", LABEL),
        Span::styled(format!("{}", s.call_count), BOLD),
        Span::styled(format!("  [{}]", period_label), ACCENT),
    ]);
    let block = Block::default()
        .borders(Borders::BOTTOM)
        .border_style(Style::default().fg(Color::DarkGray));
    let paragraph = Paragraph::new(vec![line])
        .block(block)
        .alignment(Alignment::Center);
    f.render_widget(paragraph, area);
}

// ── Daily Activity ───────────────────────────────────────────────────────────

pub fn render_daily(f: &mut Frame, daily: &[DailyStats], area: Rect, focused: bool) {
    let block = card_block("Daily Activity", focused);
    let inner = block.inner(area);
    f.render_widget(block, area);

    if daily.is_empty() {
        let p = Paragraph::new(" No data").style(DIM);
        f.render_widget(p, inner);
        return;
    }

    let max_tokens = daily.iter().map(|d| d.tokens).max().unwrap_or(1);

    // Compute actual cost column width from data
    let max_cost_len = daily
        .iter()
        .map(|d| fmt_tokens(d.tokens).len())
        .max()
        .unwrap_or(8);
    let date_width = 6usize; // " 04-15 "
    let data_cols = max_cost_len + 2; // " {cost}"
    let bar_width = inner.width.saturating_sub((date_width + data_cols) as u16) as usize;

    let mut lines: Vec<Line> = Vec::new();
    // Show most recent days first (reversed), N that fit
    let visible = (inner.height as usize).min(daily.len());
    let start = daily.len().saturating_sub(visible);

    for day in daily[start..].iter().rev() {
        let bar_len = if max_tokens > 0 && bar_width > 0 {
            ((day.tokens as f64 / max_tokens as f64) * bar_width as f64).ceil() as usize
        } else {
            0
        };
        let bar_len = bar_len.max(1).min(bar_width);
        let bar: String = "\u{2584}".repeat(bar_len); // ▄ lower-half block for visual separation
        let pad: String = " ".repeat(bar_width.saturating_sub(bar_len));
        // Show short date (MM-DD)
        let short_date = if day.date.len() >= 10 {
            &day.date[5..10]
        } else {
            &day.date
        };
        lines.push(Line::from(vec![
            Span::styled(format!(" {:>5} ", short_date), DIM),
            Span::styled(bar, ACCENT),
            Span::raw(pad),
            Span::styled(
                format!(" {:>width$}", fmt_tokens(day.tokens), width = max_cost_len),
                LABEL,
            ),
        ]));
    }

    let p = Paragraph::new(lines);
    f.render_widget(p, inner);
}

// ── By Project ───────────────────────────────────────────────────────────────

pub fn render_projects(f: &mut Frame, projects: &[ProjectStats], area: Rect, focused: bool) {
    let block = card_block("By Project", focused);
    let inner = block.inner(area);
    f.render_widget(block, area);

    if projects.is_empty() {
        let p = Paragraph::new(" No data").style(DIM);
        f.render_widget(p, inner);
        return;
    }

    // Compute column widths from actual data
    let max_cost_len = projects
        .iter()
        .map(|p| fmt_cost(p.cost).len())
        .max()
        .unwrap_or(6);
    let max_tok_len = projects
        .iter()
        .map(|p| fmt_tokens(p.tokens).len())
        .max()
        .unwrap_or(6);
    let max_sess_len = projects
        .iter()
        .map(|p| p.sessions.to_string().len())
        .max()
        .unwrap_or(1);

    // Data columns get guaranteed space; name column fills whatever is left
    let spacing = 2;
    let cost_width = max_cost_len;
    let tok_width = max_tok_len;
    let sess_width = max_sess_len;
    // +1 for leading space on name, +1 for trailing 's' on sessions
    let fixed = cost_width + tok_width + sess_width + spacing * 3 + 2;
    let name_width = (inner.width as usize).saturating_sub(fixed).max(4);

    let mut lines: Vec<Line> = Vec::new();
    let visible = (inner.height as usize).min(projects.len());
    for proj in projects.iter().take(visible) {
        let name = if proj.project.len() > name_width {
            format!(
                "{}...",
                proj.project
                    .chars()
                    .take(name_width.saturating_sub(3))
                    .collect::<String>()
            )
        } else {
            proj.project.clone()
        };
        lines.push(Line::from(vec![
            Span::styled(format!(" {:<width$}", name, width = name_width), BOLD),
            Span::raw("  "),
            Span::styled(
                format!("{:>width$}", fmt_cost(proj.cost), width = cost_width),
                LABEL,
            ),
            Span::raw("  "),
            Span::styled(
                format!("{:>width$}", fmt_tokens(proj.tokens), width = tok_width),
                DIM,
            ),
            Span::raw("  "),
            Span::styled(
                format!("{:>width$}s", proj.sessions, width = sess_width),
                DIM,
            ),
        ]));
    }

    let p = Paragraph::new(lines);
    f.render_widget(p, inner);
}

// ── By Model ─────────────────────────────────────────────────────────────────

pub fn render_models(f: &mut Frame, models: &[ModelStats], area: Rect, focused: bool) {
    let block = card_block("By Model", focused);
    let inner = block.inner(area);
    f.render_widget(block, area);

    if models.is_empty() {
        let p = Paragraph::new(" No data").style(DIM);
        f.render_widget(p, inner);
        return;
    }

    // Compute column widths from actual data
    let visible = (inner.height as usize).min(models.len());
    let max_cost_len = models
        .iter()
        .take(visible)
        .map(|m| {
            let c = fmt_cost(m.cost);
            if m.estimated { c.len() + 1 } else { c.len() }
        })
        .max()
        .unwrap_or(6);
    let max_tok_len = models
        .iter()
        .take(visible)
        .map(|m| fmt_tokens(m.tokens).len())
        .max()
        .unwrap_or(6);

    // Data columns get guaranteed space; name column fills whatever is left
    let spacing = 2;
    let cost_width = max_cost_len;
    let tok_width = max_tok_len;
    // +1 for leading space on name
    let fixed = cost_width + tok_width + spacing * 2 + 1;
    let name_width = (inner.width as usize).saturating_sub(fixed).max(4);

    let mut lines: Vec<Line> = Vec::new();
    for m in models.iter().take(visible) {
        let display = crate::tui::provider_selector::model_display_label(&m.model).to_string();
        let name = if display.len() > name_width {
            format!(
                "{}...",
                display
                    .chars()
                    .take(name_width.saturating_sub(3))
                    .collect::<String>()
            )
        } else {
            display
        };
        let cost_style = if m.estimated { ACCENT } else { LABEL };
        let cost_str = if m.estimated {
            format!("~{}", fmt_cost(m.cost))
        } else {
            fmt_cost(m.cost)
        };
        lines.push(Line::from(vec![
            Span::styled(format!(" {:<width$}", name, width = name_width), BOLD),
            Span::raw("  "),
            Span::styled(
                format!("{:>width$}", cost_str, width = cost_width),
                cost_style,
            ),
            Span::raw("  "),
            Span::styled(
                format!("{:>width$}", fmt_tokens(m.tokens), width = tok_width),
                DIM,
            ),
        ]));
    }

    let p = Paragraph::new(lines);
    f.render_widget(p, inner);
}

// ── Core Tools ───────────────────────────────────────────────────────────────

pub fn render_tools(f: &mut Frame, tools: &[ToolStats], area: Rect, focused: bool) {
    let block = card_block("Core Tools", focused);
    let inner = block.inner(area);
    f.render_widget(block, area);

    if tools.is_empty() {
        let p = Paragraph::new(" No data").style(DIM);
        f.render_widget(p, inner);
        return;
    }

    let visible = (inner.height as usize).min(tools.len());

    // Compute widths from actual data
    let max_name_len = tools
        .iter()
        .take(visible)
        .map(|t| t.tool_name.len())
        .max()
        .unwrap_or(8);
    let max_count_len = tools
        .iter()
        .take(visible)
        .map(|t| t.call_count.to_string().len())
        .max()
        .unwrap_or(1);
    let max_count = tools.first().map(|t| t.call_count).unwrap_or(1);

    // Reserve space for actual name and count, bar gets the rest
    let data_cols = max_name_len + max_count_len + 3; // 3 spacer chars
    let total_needed = (inner.width as usize).min(data_cols);
    let name_width = total_needed
        .saturating_sub(max_count_len + 2)
        .max(max_name_len.min(4));
    let count_width = total_needed
        .saturating_sub(name_width + 2)
        .max(max_count_len);
    let bar_width = inner
        .width
        .saturating_sub((name_width + count_width + 3) as u16) as usize;

    let mut lines: Vec<Line> = Vec::new();
    for tool in tools.iter().take(visible) {
        let bar_len = if max_count > 0 && bar_width > 0 {
            ((tool.call_count as f64 / max_count as f64) * bar_width as f64).ceil() as usize
        } else {
            0
        };
        let bar_len = bar_len.max(1).min(bar_width);
        let bar: String = "\u{2584}".repeat(bar_len);
        let pad: String = " ".repeat(bar_width.saturating_sub(bar_len));
        let name = if tool.tool_name.len() > name_width {
            format!(
                "{}...",
                tool.tool_name
                    .chars()
                    .take(name_width.saturating_sub(3))
                    .collect::<String>()
            )
        } else {
            tool.tool_name.clone()
        };
        lines.push(Line::from(vec![
            Span::styled(format!(" {:<width$}", name, width = name_width), BOLD),
            Span::styled(bar, ACCENT),
            Span::raw(pad),
            Span::styled(
                format!(" {:>width$}", tool.call_count, width = count_width),
                DIM,
            ),
        ]));
    }

    let p = Paragraph::new(lines);
    f.render_widget(p, inner);
}

// ── By Activity ──────────────────────────────────────────────────────────────

pub fn render_activities(f: &mut Frame, activities: &[ActivityStats], area: Rect, focused: bool) {
    let block = card_block("By Activity", focused);
    let inner = block.inner(area);
    f.render_widget(block, area);

    if activities.is_empty() {
        let p = Paragraph::new(" No data").style(DIM);
        f.render_widget(p, inner);
        return;
    }

    // Compute column widths from actual data
    let visible = (inner.height.saturating_sub(1) as usize).min(activities.len());
    let max_cat_len = activities
        .iter()
        .take(visible)
        .map(|a| a.category.len())
        .max()
        .unwrap_or(8);
    let max_cost_len = activities
        .iter()
        .take(visible)
        .map(|a| fmt_cost(a.cost).len())
        .max()
        .unwrap_or(6);
    let max_turns_len = activities
        .iter()
        .take(visible)
        .map(|a| a.turns.to_string().len())
        .max()
        .unwrap_or(1);
    let max_pct_len = activities
        .iter()
        .take(visible)
        .map(|a| a.one_shot_pct.to_string().len())
        .max()
        .unwrap_or(1);

    // Data columns get guaranteed space; category+bar fill whatever is left
    let spacing = 1; // single space between data cols
    let pct_width = max_pct_len + 2; // e.g. "45%" needs digit + %
    let fixed_data = max_cost_len + max_turns_len + pct_width + spacing * 3;
    let cat_bar_width = (inner.width as usize).saturating_sub(fixed_data + 1); // +1 leading space
    let cat_width = max_cat_len.min(cat_bar_width / 3).max(4);
    let bar_width = cat_bar_width.saturating_sub(cat_width);

    let header_line = Line::from(vec![
        Span::styled(format!(" {:<width$}", "Category", width = cat_width), LABEL),
        Span::raw(" ".repeat(bar_width)),
        Span::styled(format!(" {:>width$}", "Cost", width = max_cost_len), LABEL),
        Span::styled(
            format!(" {:>width$}", "Turns", width = max_turns_len),
            LABEL,
        ),
        Span::styled(format!(" {:>width$}", "1-shot", width = pct_width), LABEL),
    ]);
    let mut lines: Vec<Line> = vec![header_line];

    let max_cost = activities.iter().map(|a| a.cost).fold(0.0_f64, f64::max);

    for act in activities.iter().take(visible) {
        let bar_len = if max_cost > 0.0 && bar_width > 0 {
            ((act.cost / max_cost) * bar_width as f64).ceil() as usize
        } else {
            0
        };
        let bar_len = bar_len
            .max(if act.cost > 0.0 { 1 } else { 0 })
            .min(bar_width);
        let bar: String = "\u{2584}".repeat(bar_len);
        let pad: String = " ".repeat(bar_width.saturating_sub(bar_len));
        let category = if act.category.len() > cat_width {
            format!(
                "{}...",
                act.category
                    .chars()
                    .take(cat_width.saturating_sub(3))
                    .collect::<String>()
            )
        } else {
            act.category.clone()
        };
        let one_shot = format!("{}%", act.one_shot_pct as u32);
        lines.push(Line::from(vec![
            Span::styled(format!(" {:<width$}", category, width = cat_width), BOLD),
            Span::styled(bar, ACCENT),
            Span::raw(pad),
            Span::styled(
                format!(" {:>width$}", fmt_cost(act.cost), width = max_cost_len),
                LABEL,
            ),
            Span::styled(
                format!(" {:>width$}", act.turns, width = max_turns_len),
                DIM,
            ),
            Span::styled(format!(" {:>width$}", one_shot, width = pct_width), DIM),
        ]));
    }

    let p = Paragraph::new(lines);
    f.render_widget(p, inner);
}

// ── Footer ───────────────────────────────────────────────────────────────────

pub fn render_footer(f: &mut Frame, area: Rect) {
    let line = Line::from(vec![
        Span::styled("Tab", ACCENT),
        Span::styled(" navigate  ", DIM),
        Span::styled("Enter", ACCENT),
        Span::styled(" details  ", DIM),
        Span::styled("T", ACCENT),
        Span::styled(" today  ", DIM),
        Span::styled("W", ACCENT),
        Span::styled(" week  ", DIM),
        Span::styled("M", ACCENT),
        Span::styled(" month  ", DIM),
        Span::styled("A", ACCENT),
        Span::styled(" all  ", DIM),
        Span::styled("Esc", ACCENT),
        Span::styled(" close", DIM),
    ]);
    let p = Paragraph::new(vec![line])
        .alignment(Alignment::Center)
        .wrap(Wrap { trim: false });
    f.render_widget(p, area);
}