Delete old avatar; fix database migration.

src/database/entities/autumn.rs

@@ -86,4 +86,25 @@ impl File {
             Err(Error::UnknownAttachment)
         }
     }
+
+    pub async fn delete(&self) -> Result<()> {
+        get_collection("attachments")
+            .update_one(
+                doc! {
+                    "_id": &self.id
+                },
+                doc! {
+                    "$set": {
+                        "deleted": true
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "attachment",
+            })
+    }
 }

src/database/entities/message.rs

@@ -236,23 +236,7 @@ impl Message {
 
     pub async fn delete(&self) -> Result<()> {
         if let Some(attachment) = &self.attachment {
-            get_collection("attachments")
-                .update_one(
-                    doc! {
-                        "_id": &attachment.id
-                    },
-                    doc! {
-                        "$set": {
-                            "deleted": true
-                        }
-                    },
-                    None,
-                )
-                .await
-                .map_err(|_| Error::DatabaseError {
-                    operation: "update_one",
-                    with: "attachment",
-                })?;
+            attachment.delete().await?;
         }
 
         get_collection("messages")