use crate::theme::{ChromeMode, ResolvedTheme};
use ratatui::{
    Frame,
    layout::Rect,
    widgets::{Block, Borders, Paragraph},
};

/// Draw a conventional outlined panel or a filled surface from the same call
/// site.  Screens can migrate without embedding theme branches in layouts.
pub fn render_panel(
    frame: &mut Frame,
    area: Rect,
    title: &str,
    focused: bool,
    theme: &ResolvedTheme,
) -> Rect {
    match theme.chrome {
        ChromeMode::Bordered => {
            let block = Block::default()
                .title(title)
                .borders(Borders::ALL)
                .border_style(if focused {
                    theme.borders.focused
                } else {
                    theme.borders.normal
                });
            let inner = block.inner(area);
            frame.render_widget(block, area);
            inner
        }
        ChromeMode::Surfaces => {
            frame.render_widget(
                Block::default().style(if focused {
                    theme.surfaces.panel_focused
                } else {
                    theme.surfaces.panel
                }),
                area,
            );
            let header = Rect {
                x: area.x,
                y: area.y,
                width: area.width,
                height: area.height.min(1),
            };
            frame.render_widget(
                Paragraph::new(format!("  {title}")).style(theme.surfaces.panel_alternate),
                header,
            );
            // Surface panels use a single header row. A one-cell inset keeps
            // compact controls such as the console usable at height three.
            Rect {
                x: area.x.saturating_add(1),
                y: area.y.saturating_add(1),
                width: area.width.saturating_sub(2),
                height: area.height.saturating_sub(1),
            }
        }
    }
}