refactor: add get_item_content_info to AsyncItemService and simplify binary checks

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/modes/server/api/item.rs

@@ -168,14 +168,15 @@ pub async fn handle_get_item_latest_content(
 
     let item_service = AsyncItemService::new(state.data_dir.clone(), state.db.clone(), state.item_service.clone());
 
-    // First get the item metadata to check if it's binary and get MIME type
+    // First find the item to get its ID
     let item_with_meta = item_service
         .find_item(vec![], tags, HashMap::new())
         .await;
 
     match item_with_meta {
         Ok(item) => {
-            stream_item_content_response(&item_service, item.item.id.unwrap(), params.allow_binary, params.offset, params.length).await
+            let item_id = item.item.id.unwrap();
+            stream_item_content_response(&item_service, item_id, params.allow_binary, params.offset, params.length).await
         }
         Err(CoreError::ItemNotFoundGeneric) => Err(StatusCode::NOT_FOUND),
         Err(e) => {
@@ -245,35 +246,18 @@ async fn stream_item_content_response(
     
     // Check if content is binary when allow_binary is false
     if !allow_binary {
-        // Get the binary status using the new method
+        match item_service.get_item_content_info(item_id).await {
-        let is_binary = match item_service.get_item(item_id).await {
+            Ok((_, _, is_binary)) => {
-            Ok(item_with_meta) => {
-                let metadata = item_with_meta.meta_as_map();
-                if let Some(binary_val) = metadata.get("binary") {
-                    binary_val == "true"
-                } else {
-                    // Fall back to checking the content directly
-                    match item_service.get_item_content(item_id).await {
-                        Ok(item_with_content) => {
-                            crate::common::is_binary::is_binary(&item_with_content.content)
-                        }
-                        Err(e) => {
-                            warn!("Failed to get content for binary check for item {}: {}", item_id, e);
-                            return Err(StatusCode::INTERNAL_SERVER_ERROR);
-                        }
-                    }
-                }
-            }
-            Err(e) => {
-                warn!("Failed to get item {} for binary check: {}", item_id, e);
-                return Err(StatusCode::INTERNAL_SERVER_ERROR);
-            }
-        };
-        
                 if is_binary {
                     return Err(StatusCode::BAD_REQUEST);
                 }
             }
+            Err(e) => {
+                warn!("Failed to get content info for binary check for item {}: {}", item_id, e);
+                return Err(StatusCode::INTERNAL_SERVER_ERROR);
+            }
+        }
+    }
     
     // Now stream the content with the specified offset and length
     match item_service.stream_item_content_by_id(item_id, true, offset, length).await {

src/services/async_item_service.rs

@@ -47,6 +47,18 @@ impl AsyncItemService {
         .unwrap()
     }
 
+    pub async fn get_item_content_info(&self, id: i64) -> Result<(Vec<u8>, String, bool), CoreError> {
+        let db = self.db.clone();
+        let item_service = self.item_service.clone();
+
+        tokio::task::spawn_blocking(move || {
+            let conn = db.blocking_lock();
+            item_service.get_item_content_info(&conn, id)
+        })
+        .await
+        .unwrap()
+    }
+
 
     pub async fn stream_item_content_by_id(
         &self,