use owlen_tui::commands;
use owlen_tui::state::CommandPalette;

#[test]
fn palette_tracks_buffer_and_suggestions() {
    let mut palette = CommandPalette::new();
    assert_eq!(palette.buffer(), "");
    assert!(palette.suggestions().is_empty());

    palette.set_buffer("mo");
    assert_eq!(palette.buffer(), "mo");
    assert!(!palette.suggestions().is_empty());

    palette.push_char('d');
    assert_eq!(palette.buffer(), "mod");
    assert!(!palette.suggestions().is_empty());

    palette.pop_char();
    assert_eq!(palette.buffer(), "mo");
}

#[test]
fn palette_selection_wraps_safely() {
    let mut palette = CommandPalette::new();
    palette.set_buffer("m");
    let suggestions = palette.suggestions().len();
    assert!(suggestions > 0);

    palette.select_previous();
    assert_eq!(palette.selected_index(), 0);

    for _ in 0..suggestions * 2 {
        palette.select_next();
    }
    assert!(palette.selected_index() < palette.suggestions().len());
}

#[test]
fn palette_apply_selected_updates_buffer() {
    let mut palette = CommandPalette::new();
    palette.set_buffer("mo");
    palette.select_next();
    let selected = palette.apply_selected().expect("suggestion");
    assert_eq!(palette.buffer(), selected);
    assert!(selected.starts_with("m"));
}

#[test]
fn command_catalog_contains_expected_aliases() {
    let keywords: Vec<_> = commands::all().iter().map(|spec| spec.keyword).collect();
    assert!(keywords.contains(&"model"));
    assert!(keywords.contains(&"open"));
    assert!(keywords.contains(&"close"));
    assert!(keywords.contains(&"sessions"));
    assert!(keywords.contains(&"new"));
}