use chrono::{DateTime, Utc};
use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};

pub fn format_time(time: &DateTime<Utc>) -> String {
    let now = Utc::now();
    let duration = now.signed_duration_since(*time);

    if duration.num_days() > 0 {
        format!("{}d", duration.num_days())
    } else if duration.num_hours() > 0 {
        format!("{}h", duration.num_hours())
    } else if duration.num_minutes() > 0 {
        format!("{}m", duration.num_minutes())
    } else {
        format!("{}s", duration.num_seconds().max(0))
    }
}

/// Common key patterns for navigation
pub fn is_exit_key(key: KeyEvent) -> bool {
    matches!((key.code, key.modifiers), 
        (KeyCode::Esc, _) | 
        (KeyCode::Char('q'), _) | 
        (KeyCode::Char('c'), KeyModifiers::CONTROL)
    )
}

pub fn is_up_key(key: KeyEvent) -> bool {
    matches!((key.code, key.modifiers), 
        (KeyCode::Up, _) | 
        (KeyCode::Char('k'), _)
    )
}

pub fn is_down_key(key: KeyEvent) -> bool {
    matches!((key.code, key.modifiers), 
        (KeyCode::Down, _) | 
        (KeyCode::Char('j'), _)
    )
}

pub fn is_home_key(key: KeyEvent) -> bool {
    matches!((key.code, key.modifiers), 
        (KeyCode::Home, _) | 
        (KeyCode::Char('g'), _)
    )
}

pub fn is_end_key(key: KeyEvent) -> bool {
    matches!((key.code, key.modifiers), 
        (KeyCode::End, _) | 
        (KeyCode::Char('G'), _)
    )
}