fix: optimize check mode

Author: Quozul

src/optimizer.rs

@@ -19,29 +19,35 @@ pub fn optimize_region_file(
             let chunks = region.get_chunks();
             result.total_chunks += chunks.len();
 
-            let mut chunks_to_delete = Vec::new();
-            for chunk in chunks {
-                if chunk.should_delete() {
-                    chunks_to_delete.push(chunk.clone());
+            if write {
+                let mut chunks_to_delete = Vec::new();
+                for chunk in chunks {
+                    if chunk.should_delete() {
+                        chunks_to_delete.push(chunk.clone());
+                    }
                 }
-            }
-            result.deleted_chunks += chunks_to_delete.len();
+                result.deleted_chunks += chunks_to_delete.len();
 
-            for chunk in &chunks_to_delete {
-                region.remove_chunk(chunk);
-            }
+                for chunk in &chunks_to_delete {
+                    region.remove_chunk(chunk);
+                }
 
-            if region.is_empty() {
-                result.deleted_regions += 1;
-                if write {
+                if region.is_empty() {
+                    result.deleted_regions += 1;
                     std::fs::remove_file(region_file_path)?;
+                } else {
+                    let bytes = region.to_bytes();
+                    std::fs::write(region_file_path, bytes)?;
+                }
+            } else {
+                for chunk in chunks {
+                    if chunk.should_delete() {
+                        result.deleted_chunks += 1;
+                    }
+                }
+                if result.deleted_chunks >= result.total_chunks {
+                    result.deleted_regions += 1;
                 }
-                return Ok(result);
-            }
-
-            if write {
-                let bytes = region.to_bytes();
-                std::fs::write(region_file_path, bytes)?;
             }
         }
         Err(_) => {