feat: async image conversion service (avif/webp) with backfill

crates/adapters/postgres/src/image_ref.rs

@@ -0,0 +1,48 @@
+use async_trait::async_trait;
+use domain::{errors::DomainError, ports::ImageRefPort};
+use sqlx::PgPool;
+use std::sync::Arc;
+
+pub struct PostgresImageRefAdapter {
+    pool: PgPool,
+}
+
+impl PostgresImageRefAdapter {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+}
+
+pub fn create_image_ref(pool: PgPool) -> Arc<dyn ImageRefPort> {
+    Arc::new(PostgresImageRefAdapter::new(pool))
+}
+
+#[async_trait]
+impl ImageRefPort for PostgresImageRefAdapter {
+    async fn swap(&self, old_key: &str, new_key: &str) -> Result<(), DomainError> {
+        let mut tx = self.pool.begin().await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        sqlx::query("UPDATE users SET avatar_path = $1 WHERE avatar_path = $2")
+            .bind(new_key).bind(old_key)
+            .execute(&mut *tx).await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        sqlx::query("UPDATE movies SET poster_path = $1 WHERE poster_path = $2")
+            .bind(new_key).bind(old_key)
+            .execute(&mut *tx).await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        tx.commit().await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))
+    }
+
+    async fn list_keys(&self) -> Result<Vec<String>, DomainError> {
+        let rows: Vec<(String,)> = sqlx::query_as(
+            "SELECT avatar_path FROM users WHERE avatar_path IS NOT NULL
+             UNION
+             SELECT poster_path FROM movies WHERE poster_path IS NOT NULL",
+        )
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        Ok(rows.into_iter().map(|(k,)| k).collect())
+    }
+}