//! Selection chrome: the marker glyph and the selected-row style.
//!
//! Ported from sysop-tui's `selection.rs`, retinted from the theme. The marker
//! stays a plain triangle rather than a Nerd Font glyph so selection survives
//! a console without the patched font — the TTY before the session starts, a
//! remote shell, `alloy` over SSH. Per docs/ICONOGRAPHY.md, Nerd Font glyphs
//! decorate; they never carry state on their own.

use ratatui::style::{Modifier, Style};

use crate::theme::Theme;

/// The selected-row marker. Rendered in the gutter, one cell plus a space.
pub const MARKER: &str = "▶";

/// Blank gutter for unselected rows — the same width as [`MARKER`], so rows do
/// not shift horizontally as selection moves.
pub const MARKER_BLANK: &str = " ";

/// Style for the selected row.
///
/// Uses `surface.raised` as the selection field rather than an accent fill:
/// DESIGN-LANGUAGE.md keeps color off chrome, so selection reads as a *raised*
/// surface plus weight, and any `Severity` color already on the row survives
/// unchanged instead of being drowned by an accent background.
pub fn selected_style(theme: &Theme) -> Style {
    Style::default()
        .bg(theme.surface_raised)
        .fg(theme.content_primary)
        .add_modifier(Modifier::BOLD)
}

/// Style for an unselected row.
pub fn unselected_style(theme: &Theme) -> Style {
    Style::default().fg(theme.content_secondary)
}