add method for desktop to get notification relevant information for a message (#3614)

* add method for desktop to get notification relevant information for a message

* add pr number to changelog

* rename MessageNotificationData to MessageNotificationInfo

deltachat-jsonrpc/src/api/mod.rs

@@ -39,7 +39,7 @@ use types::webxdc::WebxdcMessageInfo;
 
 use self::types::{
     chat::{BasicChat, MuteDuration},
-    message::MessageViewtype,
+    message::{MessageNotificationInfo, MessageViewtype},
 };
 
 #[derive(Clone, Debug)]
@@ -642,6 +642,16 @@ impl CommandApi {
         Ok(messages)
     }
 
+    /// Fetch info desktop needs for creating a notification for a message
+    async fn message_get_notification_info(
+        &self,
+        account_id: u32,
+        message_id: u32,
+    ) -> Result<MessageNotificationInfo> {
+        let ctx = self.get_context(account_id).await?;
+        MessageNotificationInfo::from_msg_id(&ctx, MsgId::new(message_id)).await
+    }
+
     /// Delete messages. The messages are deleted on the current device and
     /// on the IMAP server.
     async fn delete_messages(&self, account_id: u32, message_ids: Vec<u32>) -> Result<()> {