use ratatui::{
    layout::{Constraint, Direction, Layout, Rect},
    style::{Color, Modifier, Style},
    text::{Line, Span},
};

use crate::gentoo::package::Metadata;

pub fn search_popup_rect(percent_x: u16, r: Rect) -> Rect {
    // Cut the given rectangle into three vertical pieces
    let popup_layout = Layout::default()
        .direction(Direction::Vertical)
        .constraints([Constraint::Length(10), Constraint::Length(3)])
        .split(r);

    // Then cut the middle vertical piece into three width-wise pieces
    Layout::default()
        .direction(Direction::Horizontal)
        .constraints([
            Constraint::Percentage((100 - percent_x) / 2),
            Constraint::Percentage(percent_x),
            Constraint::Percentage((100 - percent_x) / 2),
        ])
        .split(popup_layout[1])[1] // Return the middle chunk
}

pub fn homepage_lines(metadata: &Metadata, bold_style: Style) -> Vec<Line<'_>> {
    let mut lines = Vec::new();
    lines.push(Line::from(vec![
        Span::styled("Homepage: ", bold_style),
        Span::raw(""),
    ]));

    for url in metadata.homepage.iter().filter(|s| !s.is_empty()) {
        lines.push(Line::from(vec![
            Span::raw("  - "), // indentation
            Span::styled(
                url,
                Style::default()
                    .fg(Color::LightBlue)
                    .add_modifier(Modifier::UNDERLINED),
            ),
        ]));
    }

    lines
}

pub fn human_size(bytes: usize) -> String {
    const UNITS: [&str; 5] = ["B", "KB", "MB", "GB", "TB"];

    let mut size = bytes as f64;
    let mut unit = 0;

    while size >= 1024.0 && unit < UNITS.len() - 1 {
        size /= 1024.0;
        unit += 1;
    }

    if unit == 0 {
        format!("{} {}", bytes, UNITS[unit])
    } else {
        format!("{:.1} {}", size, UNITS[unit])
    }
}