Add rust implementation

src/services/downloader/utils.rs

@@ -0,0 +1,36 @@
+use reqwest::Response;
+use tempfile::SpooledTempFile;
+use bytes::Buf;
+
+
+use std::io::{Seek, SeekFrom, Write};
+
+
+pub async fn response_to_tempfile(res: &mut Response) -> Option<SpooledTempFile> {
+    let mut tmp_file = tempfile::spooled_tempfile(5 * 1024 * 1024);
+
+    {
+        loop {
+            let chunk = res.chunk().await;
+
+            let result = match chunk {
+                Ok(v) => v,
+                Err(_) => return None,
+            };
+
+            let data = match result {
+                Some(v) => v,
+                None => break,
+            };
+
+            match tmp_file.write(data.chunk()) {
+                Ok(_) => (),
+                Err(_) => return None,
+            }
+        }
+
+        tmp_file.seek(SeekFrom::Start(0)).unwrap();
+    }
+
+    Some(tmp_file)
+}