use ratatui::{
  Frame,
  layout::Rect,
  style::{Color, Modifier, Style},
  text::{Line, Span},
  widgets::{Block, Borders, Paragraph},
};

use crate::app::AppState;

pub fn render(f: &mut Frame, state: &AppState, area: Rect) {
  let label_style = Style::default()
    .fg(Color::Yellow)
    .add_modifier(Modifier::BOLD);
  let value_style = Style::default().fg(Color::White);
  let section_style = Style::default()
    .fg(Color::Cyan)
    .add_modifier(Modifier::BOLD);

  let pad = "  ";

  let mut lines = vec![
    Line::default(),
    Line::from(Span::styled("--- Database Statistics ---", section_style)),
  ];

  if let Some(ref stats) = state.database_stats {
    for (key, value) in stats {
      lines.push(Line::from(vec![
        Span::raw(pad),
        Span::styled(format!("{key:<20}"), label_style),
        Span::styled(value.clone(), value_style),
      ]));
    }
  } else {
    lines.push(Line::from(vec![
      Span::raw(pad),
      Span::raw("Press 'r' to load database statistics"),
    ]));
  }

  lines.push(Line::default());
  lines.push(Line::from(Span::styled("--- Actions ---", section_style)));
  lines.push(Line::from(vec![
    Span::raw(pad),
    Span::raw("v: Vacuum database"),
  ]));
  lines.push(Line::from(vec![
    Span::raw(pad),
    Span::raw("Esc: Return to library"),
  ]));

  let paragraph = Paragraph::new(lines)
    .block(Block::default().borders(Borders::ALL).title(" Database "));

  f.render_widget(paragraph, area);
}