use crate::api::ArticleView;
use anyhow::Result;
use feedsignal_db::Db;
use uuid::Uuid;

/// Returns articles ranked by `final_score` descending, highest-relevance
/// first. `feed_id` restricts the list to one feed; `None` joins every
/// subscribed feed into one ranked list.
pub async fn list_ranked(db: Db, feed_id: Option<String>) -> Result<Vec<ArticleView>> {
    let feed_id = feed_id.map(|id| Uuid::parse_str(&id)).transpose()?;
    Ok(db
        .list_ranked_articles(feed_id, 100)
        .await?
        .into_iter()
        .map(
            |(id, feed_id, title, url, summary, topics, final_score)| ArticleView {
                id,
                feed_id,
                title,
                url,
                summary,
                topics,
                final_score,
            },
        )
        .collect())
}