use domain::models::DiaryEntry;
use domain::models::ReviewEdit;
use domain::ports::{FeedChannel, RssFeedRenderer};
use domain::testing::{test_movie_with_year, test_review};
use domain::value_objects::{Comment, UserId};
use rss::RssAdapter;

fn channel<'a>(title: &'a str) -> FeedChannel<'a> {
    FeedChannel {
        title,
        link_path: "/users/abc",
        self_path: "/users/abc/feed.rss",
    }
}

fn entry(spoilers: bool) -> DiaryEntry {
    let movie = test_movie_with_year("Blade Runner", 1982);
    let review = test_review(movie.id(), &UserId::generate(), 4).apply_edit(ReviewEdit {
        comment: Some(Some(Comment::new("replicants".into()).unwrap())),
        spoilers: Some(spoilers),
        ..Default::default()
    });
    DiaryEntry::new(movie, review)
}

#[test]
fn render_feed_uses_provided_title() {
    let adapter = RssAdapter::new("http://example.com".into());
    let xml = adapter.render_feed(&[], &channel("Custom Title")).unwrap();
    assert!(xml.contains("<title>Custom Title</title>"));
}

#[test]
fn render_feed_empty_entries_produces_valid_xml() {
    let adapter = RssAdapter::new("http://example.com".into());
    let xml = adapter.render_feed(&[], &channel("My Feed")).unwrap();
    assert!(xml.starts_with("<?xml") || xml.starts_with("<rss"));
}

#[test]
fn channel_links_are_absolute_with_atom_self() {
    let adapter = RssAdapter::new("http://example.com/".into());
    let xml = adapter.render_feed(&[], &channel("Feed")).unwrap();
    assert!(xml.contains("<link>http://example.com/users/abc</link>"));
    assert!(xml.contains(r#"xmlns:atom="http://www.w3.org/2005/Atom""#));
    assert!(xml.contains(r#"href="http://example.com/users/abc/feed.rss""#));
    assert!(xml.contains(r#"rel="self""#));
    assert!(xml.contains("<language>en</language>"));
}

#[test]
fn item_links_to_absolute_movie_page() {
    let adapter = RssAdapter::new("http://example.com".into());
    let e = entry(false);
    let xml = adapter
        .render_feed(std::slice::from_ref(&e), &channel("Feed"))
        .unwrap();
    let expected = format!(
        "<link>http://example.com/movies/{}</link>",
        e.movie().id().value()
    );
    assert!(xml.contains(&expected), "{xml}");
}

#[test]
fn spoiler_comment_is_omitted() {
    let adapter = RssAdapter::new("http://example.com".into());
    let xml = adapter
        .render_feed(&[entry(true)], &channel("Feed"))
        .unwrap();
    assert!(xml.contains("contains spoilers"));
    assert!(!xml.contains("replicants"));
}