feat: bump k-ap to v0.1.9 and implement migrate_follower_actor

Cargo.lock

@@ -2015,8 +2015,8 @@ dependencies = [
 
 [[package]]
 name = "k-ap"
-version = "0.1.8"
+version = "0.1.9"
-source = "git+https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git?tag=v0.1.8#1949fce620a4d8f6ae9aa88412f5dbf4b7b0f089"
+source = "git+https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git?tag=v0.1.9#432f39cbb4f8d74255a1f614a9bb7c8bbfe11cde"
 dependencies = [
  "activitypub_federation",
  "anyhow",
@@ -4566,7 +4566,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]

crates/adapters/activitypub/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-k-ap                   = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.8" }
+k-ap                   = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.9" }
 domain                 = { workspace = true }
 url                    = { workspace = true }
 serde                  = { workspace = true }

crates/adapters/postgres-federation/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-k-ap = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.8" }
+k-ap = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.9" }
 sqlx        = { workspace = true }
 uuid        = { workspace = true }
 chrono      = { workspace = true }

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

@@ -490,6 +490,41 @@ impl FederationRepository for PostgresFederationRepository {
         ).bind(local_user_id).bind(actor_url).fetch_one(&self.pool).await.map_err(|e| anyhow!(e))?;
         Ok(n > 0)
     }
+
+    async fn migrate_follower_actor(
+        &self,
+        old_actor_url: &str,
+        new_actor_url: &str,
+    ) -> Result<Vec<uuid::Uuid>> {
+        let mut tx = self.pool.begin().await.map_err(|e| anyhow!(e))?;
+
+        // Copy rows to the new actor URL, carrying over existing data.
+        // ON CONFLICT DO NOTHING skips users already following the new actor.
+        // RETURNING gives us user IDs that actually need a re-follow.
+        let affected: Vec<uuid::Uuid> = sqlx::query_scalar(
+            "INSERT INTO federation_following(local_user_id, remote_actor_url, follow_activity_id, outbox_url)
+             SELECT local_user_id, $2, follow_activity_id, outbox_url
+             FROM federation_following
+             WHERE remote_actor_url = $1
+             ON CONFLICT (local_user_id, remote_actor_url) DO NOTHING
+             RETURNING local_user_id",
+        )
+        .bind(old_actor_url)
+        .bind(new_actor_url)
+        .fetch_all(&mut *tx)
+        .await
+        .map_err(|e| anyhow!(e))?;
+
+        // Delete the old rows.
+        sqlx::query("DELETE FROM federation_following WHERE remote_actor_url = $1")
+            .bind(old_actor_url)
+            .execute(&mut *tx)
+            .await
+            .map_err(|e| anyhow!(e))?;
+
+        tx.commit().await.map_err(|e| anyhow!(e))?;
+        Ok(affected)
+    }
 }
 
 // ── PostgresApUserRepository ──────────────────────────────────────────────────

crates/bootstrap/Cargo.toml

@@ -14,7 +14,7 @@ postgres            = { workspace = true }
 postgres-search     = { workspace = true }
 postgres-federation = { workspace = true }
 activitypub         = { workspace = true }
-k-ap = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.8" }
+k-ap = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.9" }
 nats                = { workspace = true }
 event-transport     = { workspace = true }
 auth                = { workspace = true }

crates/worker/Cargo.toml

@@ -13,7 +13,7 @@ application         = { workspace = true }
 nats                = { workspace = true }
 event-transport     = { workspace = true }
 event-payload       = { workspace = true }
-k-ap = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.8" }
+k-ap = { git = "https://git.gabrielkaszewski.dev/GKaszewski/k-ap.git", tag = "v0.1.9" }
 activitypub         = { workspace = true }
 postgres            = { workspace = true }
 postgres-federation = { workspace = true }