feat: save messages API in JSON RPC (#6554)

relates to deltachat/deltachat-desktop#4596

Author: nicodh

deltachat-jsonrpc/src/api.rs

@@ -1305,6 +1305,12 @@ impl CommandApi {
         Ok(results)
     }
 
+    async fn save_msgs(&self, account_id: u32, message_ids: Vec<u32>) -> Result<()> {
+        let ctx = self.get_context(account_id).await?;
+        let message_ids: Vec<MsgId> = message_ids.into_iter().map(MsgId::new).collect();
+        chat::save_msgs(&ctx, &message_ids).await
+    }
+
     // ---------------------------------------------
     //  contact
     // ---------------------------------------------

deltachat-jsonrpc/src/api/types/message.rs

@@ -89,6 +89,10 @@ pub struct MessageObject {
 
     download_state: DownloadState,
 
+    original_msg_id: Option<u32>,
+
+    saved_message_id: Option<u32>,
+
     reactions: Option<JSONRPCReactions>,
 
     vcard_contact: Option<VcardContact>,
@@ -253,6 +257,16 @@ impl MessageObject {
 
             download_state,
 
+            original_msg_id: message
+                .get_original_msg_id(context)
+                .await?
+                .map(|id| id.to_u32()),
+
+            saved_message_id: message
+                .get_saved_msg_id(context)
+                .await?
+                .map(|id| id.to_u32()),
+
             reactions,
 
             vcard_contact: vcard_contacts.first().cloned(),