next_card_data mediasrv function

proto/anki/scheduler.proto

@@ -13,6 +13,7 @@ import "anki/decks.proto";
 import "anki/collection.proto";
 import "anki/config.proto";
 import "anki/deck_config.proto";
+import "anki/card_rendering.proto";
 
 service SchedulerService {
   rpc GetQueuedCards(GetQueuedCardsRequest) returns (QueuedCards);
@@ -298,9 +299,18 @@ message NextCardDataResponse {
 
   message NextCardData {
     QueuedCards queue = 1;
-    string front = 2;
-    string back = 3;
-    repeated AnswerButton answer_buttons = 4;
+    repeated AnswerButton answer_buttons = 2;
+
+    // TODO: We can probably make this a little faster by using oneof and
+    // preventing the partial_front and back being sent to svelte where it isn't
+    // used Alternatively we can use a completely different message for both
+    // Rust -> Python and the Python -> Svelte though this would be more
+    // complicated to implement.
+    string front = 3;
+    string back = 4;
+
+    repeated card_rendering.RenderedTemplateNode partial_front = 5;
+    repeated card_rendering.RenderedTemplateNode partial_back = 6;
   }
 
   optional NextCardData next_card = 1;

qt/aqt/mediasrv.py

@@ -28,9 +28,16 @@ import aqt
 import aqt.main
 import aqt.operations
 from anki import hooks
+from anki.cards import Card
 from anki.collection import OpChanges, OpChangesOnly, Progress, SearchNode
 from anki.decks import UpdateDeckConfigs
 from anki.scheduler.v3 import SchedulingStatesWithContext, SetSchedulingStatesRequest
+from anki.scheduler_pb2 import NextCardDataResponse
+from anki.template import (
+    PartiallyRenderedCard,
+    TemplateRenderContext,
+    apply_custom_filters,
+)
 from anki.utils import dev_mode
 from aqt.changenotetype import ChangeNotetypeDialog
 from aqt.deckoptions import DeckOptionsDialog
@@ -638,6 +645,31 @@ def save_custom_colours() -> bytes:
     return b""
 
 
+def next_card_data() -> bytes:
+    raw = aqt.mw.col._backend.next_card_data_raw(request.data)
+    data = NextCardDataResponse.FromString(raw)
+    backend_card = data.next_card.queue.cards[0].card
+    card = Card(aqt.mw.col, backend_card=backend_card)
+
+    ctx = TemplateRenderContext.from_existing_card(card, False)
+
+    qside = apply_custom_filters(
+        PartiallyRenderedCard.nodes_from_proto(data.next_card.partial_front),
+        ctx,
+        None,
+    )
+    aside = apply_custom_filters(
+        PartiallyRenderedCard.nodes_from_proto(data.next_card.partial_back),
+        ctx,
+        qside,
+    )
+
+    data.next_card.front = qside
+    data.next_card.back = aside
+
+    return data.SerializeToString()
+
+
 post_handler_list = [
     congrats_info,
     get_deck_configs_for_update,
@@ -654,6 +686,7 @@ post_handler_list = [
     deck_options_require_close,
     deck_options_ready,
     save_custom_colours,
+    next_card_data,
 ]
 
 
@@ -696,7 +729,6 @@ exposed_backend_list = [
     "get_optimal_retention_parameters",
     "simulate_fsrs_review",
     "simulate_fsrs_workload",
-    "next_card_data",
     # DeckConfigService
     "get_ignored_before_count",
     "get_retention_workload",

rslib/src/card_rendering/service.rs

@@ -180,7 +180,7 @@ impl crate::services::CardRenderingService for Collection {
     }
 }
 
-fn rendered_nodes_to_proto(
+pub(crate) fn rendered_nodes_to_proto(
     nodes: Vec<RenderedNode>,
 ) -> Vec<anki_proto::card_rendering::RenderedTemplateNode> {
     nodes

rslib/src/scheduler/service/mod.rs

@@ -27,6 +27,7 @@ use fsrs::FSRSReview;
 use fsrs::FSRS;
 
 use crate::backend::Backend;
+use crate::card_rendering::service::rendered_nodes_to_proto;
 use crate::prelude::*;
 use crate::scheduler::fsrs::params::ComputeParamsRequest;
 use crate::scheduler::new::NewCardDueOrder;
@@ -34,7 +35,6 @@ use crate::scheduler::states::CardState;
 use crate::scheduler::states::SchedulingStates;
 use crate::search::SortMode;
 use crate::stats::studied_today;
-use crate::text::encode_iri_paths;
 
 impl crate::services::SchedulerService for Collection {
     /// This behaves like _updateCutoff() in older code - it also unburies at
@@ -397,8 +397,8 @@ impl crate::services::SchedulerService for Collection {
         if let Some(next_card) = next_card {
             let cid = next_card.card.id;
 
-            let render = self.render_existing_card(cid, false, false)?;
-            let style = format!("<style>{}</style>", render.css);
+            let render = self.render_existing_card(cid, false, true)?;
+            //let style = format!("<style>{}</style>", render.css);
 
             let answer_buttons = self
                 .describe_next_states(&next_card.states)?
@@ -410,17 +410,15 @@ impl crate::services::SchedulerService for Collection {
                 })
                 .collect();
 
-            let prepare_card_text_for_display = |html: &str| {
-                let html = [style.clone(), html.to_string()].concat();
-                let html = encode_iri_paths(&html).to_string();
-                html
-            };
-
             Ok(NextCardDataResponse {
                 next_card: Some(NextCardData {
                     queue: Some(queue.into()),
-                    front: prepare_card_text_for_display(&render.question()),
-                    back: prepare_card_text_for_display(&render.answer()),
+
+                    front: "".to_string(),
+                    back: "".to_string(),
+
+                    partial_front: rendered_nodes_to_proto(render.qnodes),
+                    partial_back: rendered_nodes_to_proto(render.anodes),
 
                     answer_buttons,
                 }),