refactor: extract reindex + enrichment logic from handlers into use cases

crates/application/src/movies/request_enrichment.rs

@@ -0,0 +1,44 @@
+use std::sync::Arc;
+
+use chrono::Utc;
+use domain::{
+    errors::DomainError,
+    models::MovieProfile,
+    ports::{MovieEnrichmentClient, MovieProfileRepository},
+    value_objects::MovieId,
+};
+
+const STALENESS_DAYS: i64 = 30;
+
+pub async fn fetch_if_stale(
+    enrichment_client: &dyn MovieEnrichmentClient,
+    profile_repo: &Arc<dyn MovieProfileRepository>,
+    movie_id: MovieId,
+    external_metadata_id: &str,
+) -> Result<Option<MovieProfile>, DomainError> {
+    if let Ok(Some(existing)) = profile_repo.get_by_movie_id(&movie_id).await {
+        let age = Utc::now() - existing.enriched_at;
+        if age.num_days() < STALENESS_DAYS {
+            tracing::debug!(
+                movie_id = %movie_id.value(),
+                "skipping enrichment — profile is {} days old",
+                age.num_days()
+            );
+            return Ok(None);
+        }
+    }
+
+    tracing::info!(movie_id = %movie_id.value(), external_id = %external_metadata_id, "enriching movie");
+
+    match enrichment_client
+        .fetch_profile(movie_id, external_metadata_id)
+        .await
+    {
+        Ok(profile) => Ok(Some(profile)),
+        Err(DomainError::NotFound(msg)) => {
+            tracing::warn!("TMDb lookup found nothing: {msg}");
+            Ok(None)
+        }
+        Err(e) => Err(e),
+    }
+}