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<()> {

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

@@ -1,4 +1,5 @@
 use anyhow::{anyhow, Result};
+use deltachat::chat::Chat;
 use deltachat::contact::Contact;
 use deltachat::context::Context;
 use deltachat::download;
@@ -286,3 +287,61 @@ impl From<download::DownloadState> for DownloadState {
         }
     }
 }
+
+#[derive(Serialize, TypeDef)]
+#[serde(rename_all = "camelCase")]
+pub struct MessageNotificationInfo {
+    id: u32,
+    chat_id: u32,
+    account_id: u32,
+
+    image: Option<String>,
+    image_mime_type: Option<String>,
+
+    chat_name: String,
+    chat_profile_image: Option<String>,
+
+    /// also known as summary_text1
+    summary_prefix: Option<String>,
+    /// also known as summary_text2
+    summary_text: String,
+}
+
+impl MessageNotificationInfo {
+    pub async fn from_msg_id(context: &Context, msg_id: MsgId) -> Result<Self> {
+        let message = Message::load_from_db(context, msg_id).await?;
+        let chat = Chat::load_from_db(context, message.get_chat_id()).await?;
+
+        let image = if matches!(
+            message.get_viewtype(),
+            Viewtype::Image | Viewtype::Gif | Viewtype::Sticker
+        ) {
+            message
+                .get_file(context)
+                .map(|path_buf| path_buf.to_str().map(|s| s.to_owned()))
+                .unwrap_or_default()
+        } else {
+            None
+        };
+
+        let chat_profile_image = chat
+            .get_profile_image(context)
+            .await?
+            .map(|path_buf| path_buf.to_str().map(|s| s.to_owned()))
+            .unwrap_or_default();
+
+        let summary = message.get_summary(context, Some(&chat)).await?;
+
+        Ok(MessageNotificationInfo {
+            id: msg_id.to_u32(),
+            chat_id: message.get_chat_id().to_u32(),
+            account_id: context.get_id(),
+            image,
+            image_mime_type: message.get_filemime(),
+            chat_name: chat.name,
+            chat_profile_image,
+            summary_prefix: summary.prefix.map(|s| s.to_string()),
+            summary_text: summary.text,
+        })
+    }
+}