fix exporting of non-default deck configs

pylib/anki/decks.py

@@ -357,8 +357,9 @@ class DeckManager:
             return None
 
     def update_config(self, conf: DeckConfigDict, preserve_usn: bool = False) -> None:
+        "preserve_usn is ignored"
         conf["id"] = self.col._backend.add_or_update_deck_config_legacy(
-            config=to_json_bytes(conf), preserve_usn_and_mtime=preserve_usn
+            json=to_json_bytes(conf)
         )
 
     def add_config(

rslib/backend.proto

@@ -230,8 +230,7 @@ service CardRenderingService {
 }
 
 service DeckConfigService {
-  rpc AddOrUpdateDeckConfigLegacy(AddOrUpdateDeckConfigLegacyIn)
-      returns (DeckConfigId);
+  rpc AddOrUpdateDeckConfigLegacy(Json) returns (DeckConfigId);
   rpc GetDeckConfig(DeckConfigId) returns (DeckConfig);
   rpc AllDeckConfigLegacy(Empty) returns (Json);
   rpc GetDeckConfigLegacy(DeckConfigId) returns (Json);
@@ -928,11 +927,6 @@ message CloseCollectionIn {
   bool downgrade_to_schema11 = 1;
 }
 
-message AddOrUpdateDeckConfigLegacyIn {
-  bytes config = 1;
-  bool preserve_usn_and_mtime = 2;
-}
-
 message DeckConfigsForUpdate {
   message ConfigWithExtra {
     DeckConfig config = 1;

rslib/src/backend/deckconfig.rs

@@ -10,15 +10,12 @@ use crate::{
 };
 
 impl DeckConfigService for Backend {
-    fn add_or_update_deck_config_legacy(
-        &self,
-        input: pb::AddOrUpdateDeckConfigLegacyIn,
-    ) -> Result<pb::DeckConfigId> {
-        let conf: DeckConfSchema11 = serde_json::from_slice(&input.config)?;
+    fn add_or_update_deck_config_legacy(&self, input: pb::Json) -> Result<pb::DeckConfigId> {
+        let conf: DeckConfSchema11 = serde_json::from_slice(&input.json)?;
         let mut conf: DeckConfig = conf.into();
         self.with_col(|col| {
             col.transact_no_undo(|col| {
-                col.add_or_update_deck_config(&mut conf, input.preserve_usn_and_mtime)?;
+                col.add_or_update_deck_config_legacy(&mut conf)?;
                 Ok(pb::DeckConfigId { dcid: conf.id.0 })
             })
         })

rslib/src/deckconfig/mod.rs

@@ -111,16 +111,8 @@ impl Collection {
 }
 
 impl Collection {
-    pub(crate) fn add_or_update_deck_config(
-        &mut self,
-        config: &mut DeckConfig,
-        preserve_usn_and_mtime: bool,
-    ) -> Result<()> {
-        let usn = if preserve_usn_and_mtime {
-            None
-        } else {
-            Some(self.usn()?)
-        };
+    pub(crate) fn add_or_update_deck_config(&mut self, config: &mut DeckConfig) -> Result<()> {
+        let usn = Some(self.usn()?);
 
         if config.id.0 == 0 {
             self.add_deck_config_inner(config, usn)
@@ -133,6 +125,23 @@ impl Collection {
         }
     }
 
+    /// Used by the old import code; if provided id is non-zero, will add
+    /// instead of ignoring. Does not support undo.
+    pub(crate) fn add_or_update_deck_config_legacy(
+        &mut self,
+        config: &mut DeckConfig,
+    ) -> Result<()> {
+        let usn = Some(self.usn()?);
+
+        if config.id.0 == 0 {
+            self.add_deck_config_inner(config, usn)
+        } else {
+            config.set_modified(usn.unwrap());
+            self.storage
+                .add_or_update_deck_config_with_existing_id(config)
+        }
+    }
+
     /// Assigns an id and adds to DB. If usn is provided, modification time and
     /// usn will be updated.
     pub(crate) fn add_deck_config_inner(

rslib/src/deckconfig/update.rs

@@ -121,7 +121,7 @@ impl Collection {
 
         // add/update provided configs
         for conf in &mut input.configs {
-            self.add_or_update_deck_config(conf, false)?;
+            self.add_or_update_deck_config(conf)?;
             configs_after_update.insert(conf.id, conf.clone());
         }
 

rslib/src/decks/tree.rs

@@ -428,7 +428,7 @@ mod test {
         // set the limit to 4, which should mean 3 are left
         let mut conf = col.get_deck_config(DeckConfigId(1), false)?.unwrap();
         conf.inner.new_per_day = 4;
-        col.add_or_update_deck_config(&mut conf, false)?;
+        col.add_or_update_deck_config(&mut conf)?;
 
         let tree = col.deck_tree(Some(TimestampSecs::now()), None)?;
         assert_eq!(tree.children[0].new_count, 3);

rslib/src/sync/mod.rs

@@ -1378,7 +1378,7 @@ mod test {
             name: "new dconf".into(),
             ..Default::default()
         };
-        col1.add_or_update_deck_config(&mut dconf, false)?;
+        col1.add_or_update_deck_config(&mut dconf)?;
         if let DeckKind::Normal(deck) = &mut deck.kind {
             deck.config_id = dconf.id.0;
         }