feat: Get rid of MessageState::{OutPreparing, OutMdnRcvd} in the db

`OutPreparing` is deprecated since 2024-12-07, replace it with `OutDraft` to let the user review
such messages if any. `OutMdnRcvd` is not used in the db for new messages since
a30c6ae1f7, `OutDelivered` is stored instead.

deltachat-ffi/deltachat.h

@@ -4020,8 +4020,6 @@ int             dc_msg_get_viewtype           (const dc_msg_t* msg);
  *   Marked as read on IMAP and MDN may be sent. Use dc_markseen_msgs() to mark messages as being seen.
  *
  * Outgoing message states:
- * - @ref DC_STATE_OUT_PREPARING - For files which need time to be prepared before they can be sent,
- *   the message enters this state before @ref DC_STATE_OUT_PENDING. Deprecated.
  * - @ref DC_STATE_OUT_DRAFT - Message saved as draft using dc_set_draft()
  * - @ref DC_STATE_OUT_PENDING - The user has pressed the "send" button but the
  *   message is not yet sent and is pending in some way. Maybe we're offline (no checkmark).
@@ -5604,13 +5602,6 @@ int64_t         dc_lot_get_timestamp     (const dc_lot_t* lot);
  */
 #define         DC_STATE_IN_SEEN             16
 
-/**
- * Outgoing message being prepared. See dc_msg_get_state() for details.
- *
- * @deprecated 2024-12-07
- */
-#define         DC_STATE_OUT_PREPARING       18
-
 /**
  * Outgoing message drafted. See dc_msg_get_state() for details.
  */

deltachat-ffi/src/lot.rs

@@ -230,7 +230,6 @@ pub enum LotState {
     MsgInFresh = 10,
     MsgInNoticed = 13,
     MsgInSeen = 16,
-    MsgOutPreparing = 18,
     MsgOutDraft = 19,
     MsgOutPending = 20,
     MsgOutFailed = 24,
@@ -246,7 +245,6 @@ impl From<MessageState> for LotState {
             InFresh => LotState::MsgInFresh,
             InNoticed => LotState::MsgInNoticed,
             InSeen => LotState::MsgInSeen,
-            OutPreparing => LotState::MsgOutPreparing,
             OutDraft => LotState::MsgOutDraft,
             OutPending => LotState::MsgOutPending,
             OutFailed => LotState::MsgOutFailed,

deltachat-rpc-client/src/deltachat_rpc_client/const.py

@@ -190,7 +190,6 @@ class MessageState(IntEnum):
     IN_FRESH = 10
     IN_NOTICED = 13
     IN_SEEN = 16
-    OUT_PREPARING = 18
     OUT_DRAFT = 19
     OUT_PENDING = 20
     OUT_FAILED = 24

python/src/deltachat/chat.py

@@ -271,15 +271,6 @@ class Chat:
            sent out.  This is the same object as was passed in, which
            has been modified with the new state of the core.
         """
-        if msg.is_out_preparing():
-            assert msg.id != 0
-            # get a fresh copy of dc_msg, the core needs it
-            maybe_msg = Message.from_db(self.account, msg.id)
-            if maybe_msg is not None:
-                msg = maybe_msg
-            else:
-                raise ValueError("message does not exist")
-
         sent_id = lib.dc_send_msg(self.account._dc_context, self.id, msg._dc_msg)
         if sent_id == 0:
             raise ValueError("message could not be sent")
@@ -333,26 +324,6 @@ class Chat:
             raise ValueError("message could not be sent")
         return Message.from_db(self.account, sent_id)
 
-    def send_prepared(self, message):
-        """send a previously prepared message.
-
-        :param message: a :class:`Message` instance previously returned by
-                        :meth:`prepare_file`.
-        :raises ValueError: if message can not be sent.
-        :returns: a :class:`deltachat.message.Message` instance as sent out.
-        """
-        assert message.id != 0 and message.is_out_preparing()
-        # get a fresh copy of dc_msg, the core needs it
-        msg = Message.from_db(self.account, message.id)
-
-        # pass 0 as chat-id because core-docs say it's ok when out-preparing
-        sent_id = lib.dc_send_msg(self.account._dc_context, 0, msg._dc_msg)
-        if sent_id == 0:
-            raise ValueError("message could not be sent")
-        assert sent_id == msg.id
-        # modify message in place to avoid bad state for the caller
-        msg._dc_msg = Message.from_db(self.account, sent_id)._dc_msg
-
     def set_draft(self, message):
         """set message as draft.
 

python/src/deltachat/message.py

@@ -351,17 +351,12 @@ class Message:
     def is_outgoing(self):
         """Return True if Message is outgoing."""
         return lib.dc_msg_get_state(self._dc_msg) in (
-            const.DC_STATE_OUT_PREPARING,
             const.DC_STATE_OUT_PENDING,
             const.DC_STATE_OUT_FAILED,
             const.DC_STATE_OUT_MDN_RCVD,
             const.DC_STATE_OUT_DELIVERED,
         )
 
-    def is_out_preparing(self):
-        """Return True if Message is outgoing, but its file is being prepared."""
-        return self._msgstate == const.DC_STATE_OUT_PREPARING
-
     def is_out_pending(self):
         """Return True if Message is outgoing, but is pending (no single checkmark)."""
         return self._msgstate == const.DC_STATE_OUT_PENDING

src/chat.rs

@@ -2623,7 +2623,7 @@ pub async fn send_msg(context: &Context, chat_id: ChatId, msg: &mut Message) ->
         "chat_id cannot be a special chat: {chat_id}"
     );
 
-    if msg.state != MessageState::Undefined && msg.state != MessageState::OutPreparing {
+    if msg.state != MessageState::Undefined {
         msg.param.remove(Param::GuaranteeE2ee);
         msg.param.remove(Param::ForcePlaintext);
         // create_send_msg_jobs() will update `param` in the db.
@@ -2731,10 +2731,7 @@ async fn prepare_send_msg(
         None
     };
 
-    if matches!(
+    if msg.state == MessageState::Undefined
-        msg.state,
-        MessageState::Undefined | MessageState::OutPreparing
-    )
         // Legacy SecureJoin "v*-request" messages are unencrypted.
         && msg.param.get_cmd() != SystemMessage::SecurejoinMessage
         && chat.is_encrypted(context).await?
@@ -2947,8 +2944,8 @@ pub(crate) async fn create_send_msg_jobs(context: &Context, msg: &mut Message) -
 UPDATE msgs SET
     timestamp=(
         SELECT MAX(timestamp) FROM msgs WHERE
-            -- From `InFresh` to `OutMdnRcvd` inclusive except `OutDraft`.
+            -- From `InFresh` to `OutDelivered` inclusive, except `OutDraft`.
-            state IN(10,13,16,18,20,24,26,28) AND
+            state IN(10,13,16,18,20,24,26) AND
             hidden IN(0,1) AND
             chat_id=?
     ),

src/message.rs

@@ -1387,13 +1387,8 @@ pub enum MessageState {
     /// IMAP and MDN may be sent.
     InSeen = 16,
 
-    /// For files which need time to be prepared before they can be
+    // Deprecated 2024-12-07. Removed 2026-04.
-    /// sent, the message enters this state before
+    // OutPreparing = 18,
-    /// OutPending.
-    ///
-    /// Deprecated 2024-12-07.
-    OutPreparing = 18,
-
     /// Message saved as draft.
     OutDraft = 19,
 
@@ -1426,7 +1421,6 @@ impl std::fmt::Display for MessageState {
                 Self::InFresh => "Fresh",
                 Self::InNoticed => "Noticed",
                 Self::InSeen => "Seen",
-                Self::OutPreparing => "Preparing",
                 Self::OutDraft => "Draft",
                 Self::OutPending => "Pending",
                 Self::OutFailed => "Failed",
@@ -1443,7 +1437,7 @@ impl MessageState {
         use MessageState::*;
         matches!(
             self,
-            OutPreparing | OutPending | OutDelivered | OutMdnRcvd // OutMdnRcvd can still fail because it could be a group message and only some recipients failed.
+            OutPending | OutDelivered | OutMdnRcvd // OutMdnRcvd can still fail because it could be a group message and only some recipients failed.
         )
     }
 
@@ -1452,7 +1446,7 @@ impl MessageState {
         use MessageState::*;
         matches!(
             self,
-            OutPreparing | OutDraft | OutPending | OutFailed | OutDelivered | OutMdnRcvd
+            OutDraft | OutPending | OutFailed | OutDelivered | OutMdnRcvd
         )
     }
 

src/sql/migrations.rs

@@ -2376,6 +2376,18 @@ ALTER TABLE contacts ADD COLUMN name_normalized TEXT;
         .await?;
     }
 
+    inc_and_check(&mut migration_version, 152)?;
+    if dbversion < migration_version {
+        sql.execute_migration(
+            "
+UPDATE msgs SET state=26 WHERE state=28; -- Change OutMdnRcvd to OutDelivered.
+UPDATE msgs SET state=19 WHERE state=18; -- Change OutPreparing to OutDraft.
+            ",
+            migration_version,
+        )
+        .await?;
+    }
+
     let new_version = sql
         .get_raw_config_int(VERSION_CFG)
         .await?

src/webxdc.rs

@@ -544,7 +544,7 @@ impl Context {
 
         let send_now = !matches!(
             instance.state,
-            MessageState::Undefined | MessageState::OutPreparing | MessageState::OutDraft
+            MessageState::Undefined | MessageState::OutDraft
         );
 
         status_update.uid = Some(create_id());