feat: add "pinned messages" API

deltachat-jsonrpc/src/api.rs

@@ -1508,6 +1508,26 @@ impl CommandApi {
         MessageNotificationInfo::from_msg_id(&ctx, MsgId::new(message_id)).await
     }
 
+    /// Sets the "pinned" state for a message.
+    async fn set_pinned_message_state(
+        &self,
+        account_id: u32,
+        message_id: u32,
+        pinned_state: bool,
+    ) -> Result<()> {
+        let ctx = self.get_context(account_id).await?;
+        deltachat::pinned_messages::set_pinned_state(&ctx, MsgId::new(message_id), pinned_state)
+            .await
+    }
+
+    /// Returns all pinned messages of a chat.
+    async fn get_pinned_messages(&self, account_id: u32, chat_id: u32) -> Result<Vec<u32>> {
+        let ctx = self.get_context(account_id).await?;
+        let msg_ids =
+            deltachat::pinned_messages::get_pinned_messages(&ctx, ChatId::new(chat_id)).await?;
+        Ok(msg_ids.into_iter().map(|id| id.to_u32()).collect())
+    }
+
     /// 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

@@ -103,6 +103,8 @@ pub struct MessageObject {
 
     saved_message_id: Option<u32>,
 
+    is_pinned: bool,
+
     reactions: Option<JsonrpcReactions>,
 
     vcard_contact: Option<VcardContact>,
@@ -263,6 +265,7 @@ impl MessageObject {
                 .await?
                 .map(|id| id.to_u32()),
 
+            is_pinned: message.is_pinned(),
             reactions,
 
             vcard_contact: vcard_contacts.first().cloned(),
@@ -425,6 +428,8 @@ pub enum SystemMessageType {
 
     CallAccepted,
     CallEnded,
+    MessagePinned,
+    MessageUnpinned,
 }
 
 impl From<deltachat::mimeparser::SystemMessage> for SystemMessageType {
@@ -454,6 +459,8 @@ impl From<deltachat::mimeparser::SystemMessage> for SystemMessageType {
             SystemMessage::SecurejoinWaitTimeout => SystemMessageType::SecurejoinWaitTimeout,
             SystemMessage::CallAccepted => SystemMessageType::CallAccepted,
             SystemMessage::CallEnded => SystemMessageType::CallEnded,
+            SystemMessage::MessagePinned => SystemMessageType::MessagePinned,
+            SystemMessage::MessageUnpinned => SystemMessageType::MessageUnpinned,
         }
     }
 }