watchlist backfill

crates/adapters/sqlite-federation/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2024"
 [dependencies]
 sqlx = { workspace = true }
 activitypub = { workspace = true }
-k-ap        = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.3" }
+k-ap        = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.10" }
 domain = { workspace = true }
 anyhow = { workspace = true }
 uuid = { workspace = true }

crates/adapters/sqlite-federation/src/lib.rs

@@ -656,6 +656,45 @@ impl FederationRepository for SqliteFederationRepository {
         .await?;
         Ok(count > 0)
     }
+
+    async fn migrate_follower_actor(
+        &self,
+        old_actor_url: &str,
+        new_actor_url: &str,
+    ) -> Result<Vec<uuid::Uuid>> {
+        let candidates: Vec<String> = sqlx::query_scalar(
+            "SELECT local_user_id FROM ap_following
+             WHERE remote_actor_url = ?1
+               AND local_user_id NOT IN (
+                   SELECT local_user_id FROM ap_following WHERE remote_actor_url = ?2
+               )",
+        )
+        .bind(old_actor_url)
+        .bind(new_actor_url)
+        .fetch_all(&self.pool)
+        .await?;
+
+        if candidates.is_empty() {
+            return Ok(vec![]);
+        }
+
+        sqlx::query(
+            "UPDATE ap_following SET remote_actor_url = ?1
+             WHERE remote_actor_url = ?2
+               AND local_user_id NOT IN (
+                   SELECT local_user_id FROM ap_following WHERE remote_actor_url = ?1
+               )",
+        )
+        .bind(new_actor_url)
+        .bind(old_actor_url)
+        .execute(&self.pool)
+        .await?;
+
+        candidates
+            .into_iter()
+            .map(|s| uuid::Uuid::parse_str(&s).map_err(|e| anyhow::anyhow!(e)))
+            .collect()
+    }
 }
 
 // --- Content-specific repository (movies-diary) ---