//! Shared TUI widget helpers to reduce table-rendering boilerplate.

use ratatui::Frame;
use ratatui::layout::Constraint;
use ratatui::style::{Color, Modifier, Style};
use ratatui::widgets::{Row, Table};

/// Style for the currently selected row (DarkGray bg, White fg, Bold).
/// Returns default style for non-selected rows.
pub fn selected_style(i: usize, selected: Option<usize>) -> Style {
    if selected == Some(i) {
        Style::default()
            .bg(Color::DarkGray)
            .fg(Color::White)
            .add_modifier(Modifier::BOLD)
    } else {
        Style::default()
    }
}

/// Render a table with a styled header row.
///
/// Callers build their own `Vec<Row>` (using [`selected_style`] for
/// row highlighting) and pass column headers + widths. This function
/// assembles the header, constructs the `Table`, and renders it.
pub fn render_table(
    frame: &mut Frame,
    area: ratatui::layout::Rect,
    headers: &[&str],
    widths: &[Constraint],
    rows: Vec<Row>,
) {
    let header = Row::new(headers.iter().map(|h| h.to_string()).collect::<Vec<_>>())
        .style(
            Style::default()
                .fg(Color::DarkGray)
                .add_modifier(Modifier::BOLD),
        )
        .bottom_margin(0);

    let table = Table::new(rows, widths).header(header);
    frame.render_widget(table, area);
}