feat: implement federated profile handling with support for remote actor URLs across multiple components

crates/adapters/postgres-federation/src/federated_profile.rs

@@ -0,0 +1,58 @@
+use async_trait::async_trait;
+use domain::{errors::DomainError, models::FederatedProfile, ports::FederatedProfileQuery};
+use sqlx::Row;
+
+use super::PostgresFederationRepository;
+
+#[async_trait]
+impl FederatedProfileQuery for PostgresFederationRepository {
+    async fn get_federated_profile(
+        &self,
+        synthetic_user_id: uuid::Uuid,
+    ) -> Result<Option<FederatedProfile>, DomainError> {
+        let uid = synthetic_user_id.to_string();
+
+        let actor_url: Option<String> = sqlx::query_scalar(
+            "SELECT remote_actor_url FROM reviews
+             WHERE user_id = $1 AND remote_actor_url IS NOT NULL
+             LIMIT 1",
+        )
+        .bind(&uid)
+        .fetch_optional(&self.pool)
+        .await
+        .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+
+        let actor_url = match actor_url {
+            Some(url) => url,
+            None => return Ok(None),
+        };
+
+        let row = sqlx::query(
+            "SELECT handle, display_name, bio, avatar_url, banner_url
+             FROM ap_remote_actors WHERE url = $1",
+        )
+        .bind(&actor_url)
+        .fetch_optional(&self.pool)
+        .await
+        .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+
+        match row {
+            Some(r) => Ok(Some(FederatedProfile {
+                actor_url,
+                handle: r.get("handle"),
+                display_name: r.try_get("display_name").ok().flatten(),
+                bio: r.try_get("bio").ok().flatten(),
+                avatar_url: r.try_get("avatar_url").ok().flatten(),
+                banner_url: r.try_get("banner_url").ok().flatten(),
+            })),
+            None => Ok(Some(FederatedProfile {
+                handle: actor_url.clone(),
+                actor_url,
+                display_name: None,
+                bio: None,
+                avatar_url: None,
+                banner_url: None,
+            })),
+        }
+    }
+}