use ratatui::{
    style::Style,
    layout::Rect,
    Frame,
    text::{Line, Span},
    widgets::Paragraph,
};
use unicode_width::UnicodeWidthStr;
use crate::config::colors::themes::Theme;
use std::path::Path;

pub fn render_status_line(
    f: &mut Frame,
    area: Rect,
    current_dir: &str,
    theme: &Theme,
    is_edit_mode: bool,
    current_fps: f64,
) {
    let program_info = format!("multieko2 v{}", env!("CARGO_PKG_VERSION"));
    let mode_text = if is_edit_mode { "[EDIT]" } else { "[READ-ONLY]" };

    let home_dir = dirs::home_dir().map(|p| p.to_string_lossy().into_owned()).unwrap_or_default();
    let display_dir = if current_dir.starts_with(&home_dir) {
        current_dir.replacen(&home_dir, "~", 1)
    } else {
        current_dir.to_string()
    };

    let available_width = area.width as usize;
    let mode_width = UnicodeWidthStr::width(mode_text);
    let program_info_width = UnicodeWidthStr::width(program_info.as_str());
    let fps_text = format!("{:.0} FPS", current_fps);
    let fps_width = UnicodeWidthStr::width(fps_text.as_str());
    let separator = " | ";
    let separator_width = UnicodeWidthStr::width(separator);

    let fixed_width_with_fps = mode_width + separator_width + separator_width + 
        program_info_width + separator_width + fps_width;
    let show_fps = fixed_width_with_fps < available_width;

    let remaining_width_for_dir = available_width.saturating_sub(
        mode_width + separator_width + separator_width + program_info_width +
        if show_fps { separator_width + fps_width } else { 0 }
    );

    let dir_display_text = if UnicodeWidthStr::width(display_dir.as_str()) <= remaining_width_for_dir {
        display_dir
    } else {
        let dir_name = Path::new(current_dir)
            .file_name()
            .and_then(|n| n.to_str())
            .unwrap_or(current_dir);
        if UnicodeWidthStr::width(dir_name) <= remaining_width_for_dir {
            dir_name.to_string()
        } else {
            dir_name.chars().take(remaining_width_for_dir).collect()
        }
    };

    let mut spans = vec![
        Span::styled(mode_text, Style::default().fg(theme.accent)),
        Span::styled(" | ", Style::default().fg(theme.border)),
        Span::styled(dir_display_text, Style::default().fg(theme.fg)),
        Span::styled(" | ", Style::default().fg(theme.border)),
        Span::styled(program_info, Style::default().fg(theme.secondary)),
    ];

    if show_fps {
        spans.push(Span::styled(" | ", Style::default().fg(theme.border)));
        spans.push(Span::styled(fps_text, Style::default().fg(theme.secondary)));
    }

    let paragraph = Paragraph::new(Line::from(spans))
        .style(Style::default().bg(theme.bg));

    f.render_widget(paragraph, area);
}