//! Overlay: loading / processing spinner — shown during blocking operations.
use ratatui::style::{Modifier, Style};
use ratatui::text::Span;
use ratatui::widgets::{Block, Paragraph};
use ratatui::Frame;
use crate::view::theme::Theme;
use tracing::debug;

/// Render the Loading overlay.
#[tracing::instrument(skip_all)]
pub fn render(
    frame: &mut Frame,
    area: ratatui::layout::Rect,
    block: Block<'static>,
    state: &crate::state::AppStateRest,
) {
    debug!("Rendering Loading overlay, tick: {}", state.misc.tick_count);
    let block = block
        .title(Span::styled(
            " Loading ",
            Style::default()
                .fg(Theme::WARNING)
                .add_modifier(Modifier::BOLD),
        ))
        .border_style(Style::default().fg(Theme::WARNING));
    let spinner = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"];
    let frame_idx = (state.misc.tick_count as usize) % spinner.len();
    let content = format!("  {} Processing, please wait...", spinner[frame_idx]);
    let paragraph = Paragraph::new(content).block(block);
    frame.render_widget(paragraph, area);
}