use crate::harness::TestHarness;

#[tokio::test]
async fn link_preview_renders_in_thread() {
    let mut h = TestHarness::new().await;
    let author_id = h.login_as("lpauthor").await;
    let comm_id = h.create_community("Test", "test").await;
    let cat_id = h.create_category(comm_id, "General", "general").await;
    h.add_membership(author_id, comm_id, "member").await;

    let thread_id = h
        .create_thread_with_post(cat_id, author_id, "Link Test", "Content")
        .await;

    let posts = mt_db::queries::list_posts_in_thread(&h.db, thread_id)
        .await
        .unwrap();
    let post_id = posts[0].id;

    // Insert a preview directly via DB mutation
    mt_db::mutations::insert_link_preview(
        &h.db,
        post_id,
        "https://example.com",
        Some("Example Site"),
        Some("An example website"),
    )
    .await
    .unwrap();

    let thread_url = format!("/p/test/general/{}", thread_id);
    let resp = h.client.get(&thread_url).await;

    assert!(
        resp.text.contains("link-preview-card"),
        "Expected link preview card in thread HTML"
    );
    assert!(
        resp.text.contains("Example Site"),
        "Expected preview title"
    );
    assert!(
        resp.text.contains("An example website"),
        "Expected preview description"
    );
    assert!(
        resp.text.contains("https://example.com"),
        "Expected preview URL"
    );
}

#[tokio::test]
async fn post_without_links_has_no_previews() {
    let mut h = TestHarness::new().await;
    let author_id = h.login_as("nolinkauthor").await;
    let comm_id = h.create_community("Test", "test").await;
    let cat_id = h.create_category(comm_id, "General", "general").await;
    h.add_membership(author_id, comm_id, "member").await;

    let thread_id = h
        .create_thread_with_post(cat_id, author_id, "No Links", "Just plain text")
        .await;

    let posts = mt_db::queries::list_posts_in_thread(&h.db, thread_id)
        .await
        .unwrap();
    let post_id = posts[0].id;

    let previews = mt_db::queries::list_link_previews_for_posts(&h.db, &[post_id])
        .await
        .unwrap();
    assert!(previews.is_empty(), "No link previews for plain text post");
}

#[tokio::test]
async fn multiple_previews_for_post() {
    let mut h = TestHarness::new().await;
    let author_id = h.login_as("multilpauthor").await;
    let comm_id = h.create_community("Test", "test").await;
    let cat_id = h.create_category(comm_id, "General", "general").await;
    h.add_membership(author_id, comm_id, "member").await;

    let thread_id = h
        .create_thread_with_post(cat_id, author_id, "Multi Link", "Content")
        .await;

    let posts = mt_db::queries::list_posts_in_thread(&h.db, thread_id)
        .await
        .unwrap();
    let post_id = posts[0].id;

    // Insert 3 previews
    for i in 1..=3 {
        mt_db::mutations::insert_link_preview(
            &h.db,
            post_id,
            &format!("https://example{i}.com"),
            Some(&format!("Site {i}")),
            None,
        )
        .await
        .unwrap();
    }

    let thread_url = format!("/p/test/general/{}", thread_id);
    let resp = h.client.get(&thread_url).await;

    for i in 1..=3 {
        assert!(
            resp.text.contains(&format!("Site {i}")),
            "Expected preview title 'Site {i}' in HTML"
        );
        assert!(
            resp.text.contains(&format!("https://example{i}.com")),
            "Expected preview URL 'https://example{i}.com' in HTML"
        );
    }
}