Add retrieval of its bytes to the file struct

Signed-off-by: trivernis <trivernis@protonmail.com>

src/models/hydrus_file.rs

@@ -1,5 +1,5 @@
 use crate::endpoints::adding_tags::{AddTagsRequestBuilder, TagAction};
-use crate::endpoints::common::{FileIdentifier, FileMetadataInfo};
+use crate::endpoints::common::{FileIdentifier, FileMetadataInfo, FileRecord};
 use crate::error::Result;
 use crate::service::ServiceName;
 use crate::tag::Tag;
@@ -177,4 +177,9 @@ impl HydrusFile {
 
         self.client.add_tags(reqwest.build()).await
     }
+
+    /// Retrieves the file record bytes
+    pub async fn retrieve(&self) -> Result<FileRecord> {
+        self.client.get_file(self.id.clone()).await
+    }
 }

tests/wrapper/test_files.rs

@@ -72,3 +72,11 @@ async fn it_modifies_tags() {
     .await
     .unwrap();
 }
+
+#[tokio::test]
+async fn it_retrieves_content() {
+    let file = get_file().await;
+    let file = file.retrieve().await.unwrap();
+
+    assert!(file.bytes.len() > 0) // assuming it exists
+}