Merge 9011cf87ff into dac26ce671

build/configure/src/web.rs

@@ -228,6 +228,17 @@ fn build_and_check_pages(build: &mut Build) -> Result<()> {
             ":sveltekit"
         ],
     )?;
+    build_page(
+        "reviewer-inner",
+        true,
+        inputs![
+            //
+            ":ts:lib",
+            ":ts:components",
+            ":sass",
+            ":sveltekit"
+        ],
+    )?;
 
     Ok(())
 }

ftl/core/preferences.ftl

@@ -14,6 +14,7 @@ preferences-on-next-sync-force-changes-in = On next sync, force changes in one d
 preferences-paste-clipboard-images-as-png = Paste clipboard images as PNG
 preferences-paste-without-shift-key-strips-formatting = Paste without shift key strips formatting
 preferences-generate-latex-images-automatically = Generate LaTeX images (security risk)
+preferences-use-new-reviewer = Use new reviewer
 preferences-latex-generation-disabled = LaTeX image generation is disabled in the preferences.
 preferences-periodically-sync-media = Periodically sync media
 preferences-please-restart-anki-to-complete-language = Please restart Anki to complete language change.

proto/anki/config.proto

@@ -57,6 +57,7 @@ message ConfigKey {
     LOAD_BALANCER_ENABLED = 26;
     FSRS_SHORT_TERM_WITH_STEPS_ENABLED = 27;
     FSRS_LEGACY_EVALUATE = 28;
+    NEW_REVIEWER = 29;
   }
   enum String {
     SET_DUE_BROWSER = 0;
@@ -120,6 +121,7 @@ message Preferences {
     uint32 time_limit_secs = 5;
     bool load_balancer_enabled = 6;
     bool fsrs_short_term_with_steps_enabled = 7;
+    bool new_reviewer = 8;
   }
   message Editing {
     bool adding_defaults_to_current_deck = 1;

proto/anki/frontend.proto

@@ -10,6 +10,7 @@ package anki.frontend;
 import "anki/scheduler.proto";
 import "anki/generic.proto";
 import "anki/search.proto";
+import "anki/card_rendering.proto";
 
 service FrontendService {
   // Returns values from the reviewer
@@ -30,6 +31,9 @@ service FrontendService {
 
   // Save colour picker's custom colour palette
   rpc SaveCustomColours(generic.Empty) returns (generic.Empty);
+
+  // Plays the listed AV tags
+  rpc PlayAVTags(PlayAVTagsRequest) returns (generic.Empty);
 }
 
 service BackendFrontendService {}
@@ -43,3 +47,7 @@ message SetSchedulingStatesRequest {
   string key = 1;
   scheduler.SchedulingStates states = 2;
 }
+
+message PlayAVTagsRequest {
+  repeated card_rendering.AVTag tags = 1;
+}

proto/anki/scheduler.proto

@@ -13,10 +13,12 @@ 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);
   rpc AnswerCard(CardAnswer) returns (collection.OpChanges);
+  rpc NextCardData(NextCardDataRequest) returns (NextCardDataResponse);
   rpc SchedTimingToday(generic.Empty) returns (SchedTimingTodayResponse);
   rpc StudiedToday(generic.Empty) returns (generic.String);
   rpc StudiedTodayMessage(StudiedTodayMessageRequest) returns (generic.String);
@@ -285,6 +287,43 @@ message CardAnswer {
   uint32 milliseconds_taken = 6;
 }
 
+message NextCardDataRequest {
+  optional CardAnswer answer = 1;
+}
+
+message NextCardDataResponse {
+  message AnswerButton {
+    CardAnswer.Rating rating = 1;
+    string due = 2;
+  }
+
+  message NextCardData {
+    QueuedCards queue = 1;
+    repeated AnswerButton answer_buttons = 2;
+
+    string front = 3;
+    string back = 4;
+    string css = 5;
+    string body_class = 6;
+    bool autoplay = 7;
+    optional string typed_answer = 12;
+    optional string typed_answer_args = 13;
+
+    repeated card_rendering.AVTag question_av_tags = 8;
+    repeated card_rendering.AVTag answer_av_tags = 9;
+
+    // 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.
+    repeated card_rendering.RenderedTemplateNode partial_front = 10;
+    repeated card_rendering.RenderedTemplateNode partial_back = 11;
+  }
+
+  optional NextCardData next_card = 1;
+}
+
 message CustomStudyRequest {
   message Cram {
     enum CramKind {

qt/aqt/data/web/css/reviewer-bottom.scss

@@ -81,4 +81,4 @@ button {
     #outer {
         border-top-color: color(border-subtle);
     }
-}
+}

qt/aqt/forms/preferences.ui

@@ -451,6 +451,19 @@
               </property>
              </widget>
             </item>
+            <item>
+             <widget class="QCheckBox" name="new_reviewer">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="text">
+               <string>preferences_use_new_reviewer</string>
+              </property>
+             </widget>
+            </item>
             <item>
              <widget class="QPushButton" name="url_schemes">
               <property name="text">

qt/aqt/main.py

@@ -255,13 +255,11 @@ class AnkiQt(QMainWindow):
         # screens
         self.setupDeckBrowser()
         self.setupOverview()
-        self.setupReviewer()
+        # self.setupReviewer()
 
     def finish_ui_setup(self) -> None:
         "Actions that are deferred until after add-on loading."
         self.toolbar.draw()
-        # add-ons are only available here after setupAddons
-        gui_hooks.reviewer_did_init(self.reviewer)
 
     def setupProfileAfterWebviewsLoaded(self) -> None:
         for w in (self.web, self.bottomWeb):
@@ -679,6 +677,8 @@ class AnkiQt(QMainWindow):
             # dump error to stderr so it gets picked up by errors.py
             traceback.print_exc()
 
+        self.setupReviewer(self.backend.get_config_bool(Config.Bool.NEW_REVIEWER))
+
         return True
 
     def _loadCollection(self) -> None:
@@ -1074,10 +1074,13 @@ title="{}" {}>{}</button>""".format(
 
         self.overview = Overview(self)
 
-    def setupReviewer(self) -> None:
-        from aqt.reviewer import Reviewer
+    def setupReviewer(self, new: bool) -> None:
+        from aqt.reviewer import Reviewer, SvelteReviewer
 
-        self.reviewer = Reviewer(self)
+        self.reviewer = SvelteReviewer(self) if new else Reviewer(self)
+
+        # add-ons are only available here after setupAddons
+        gui_hooks.reviewer_did_init(self.reviewer)
 
     # Syncing
     ##########################################################################

qt/aqt/mediasrv.py

@@ -28,9 +28,18 @@ 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.frontend_pb2 import PlayAVTagsRequest
 from anki.scheduler.v3 import SchedulingStatesWithContext, SetSchedulingStatesRequest
+from anki.scheduler_pb2 import NextCardDataResponse
+from anki.template import (
+    PartiallyRenderedCard,
+    TemplateRenderContext,
+    apply_custom_filters,
+    av_tags_to_native,
+)
 from anki.utils import dev_mode
 from aqt.changenotetype import ChangeNotetypeDialog
 from aqt.deckoptions import DeckOptionsDialog
@@ -38,6 +47,8 @@ from aqt.operations import on_op_finished
 from aqt.operations.deck import update_deck_configs as update_deck_configs_op
 from aqt.progress import ProgressUpdate
 from aqt.qt import *
+from aqt.sound import play_tags
+from aqt.theme import ThemeManager
 from aqt.utils import aqt_data_path, show_warning, tr
 
 # https://forums.ankiweb.net/t/anki-crash-when-using-a-specific-deck/22266
@@ -363,6 +374,7 @@ def is_sveltekit_page(path: str) -> bool:
         "import-csv",
         "import-page",
         "image-occlusion",
+        "reviewer",
     ]
 
 
@@ -637,6 +649,55 @@ def save_custom_colours() -> bytes:
     return b""
 
 
+theme_manager = ThemeManager()
+
+
+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,
+    )
+
+    q_avtags = ctx.col()._backend.extract_av_tags(text=qside, question_side=True)
+    a_avtags = ctx.col()._backend.extract_av_tags(text=aside, question_side=False)
+
+    # Assumes the av tags are empty in the original response
+    data.next_card.question_av_tags.extend(q_avtags.av_tags)
+    data.next_card.answer_av_tags.extend(a_avtags.av_tags)
+
+    qside = q_avtags.text
+    aside = a_avtags.text
+
+    qside = aqt.mw.prepare_card_text_for_display(qside)
+    aside = aqt.mw.prepare_card_text_for_display(aside)
+
+    data.next_card.front = qside
+    data.next_card.back = aside
+    # Night mode is handled by the frontend so that it works with the browsers theme if used outside of anki.
+    # Perhaps the OS class should be handled this way too?
+    data.next_card.body_class = theme_manager.body_classes_for_card_ord(card.ord, False)
+
+    return data.SerializeToString()
+
+
+def play_avtags():
+    req = PlayAVTagsRequest.FromString(request.data)
+    play_tags(av_tags_to_native(req.tags))
+
+
 post_handler_list = [
     congrats_info,
     get_deck_configs_for_update,
@@ -653,6 +714,8 @@ post_handler_list = [
     deck_options_require_close,
     deck_options_ready,
     save_custom_colours,
+    next_card_data,
+    play_avtags,
 ]
 
 
@@ -698,6 +761,9 @@ exposed_backend_list = [
     # DeckConfigService
     "get_ignored_before_count",
     "get_retention_workload",
+    # CardsService
+    "set_flag",
+    "compare_answer",
 ]
 
 

qt/aqt/preferences.py

@@ -138,6 +138,7 @@ class Preferences(QDialog):
         form.showProgress.setChecked(reviewing.show_remaining_due_counts)
         form.showPlayButtons.setChecked(not reviewing.hide_audio_play_buttons)
         form.interrupt_audio.setChecked(reviewing.interrupt_audio_when_answering)
+        form.new_reviewer.setChecked(reviewing.new_reviewer)
 
         editing = self.prefs.editing
         form.useCurrent.setCurrentIndex(
@@ -173,6 +174,8 @@ class Preferences(QDialog):
         reviewing.time_limit_secs = form.timeLimit.value() * 60
         reviewing.hide_audio_play_buttons = not self.form.showPlayButtons.isChecked()
         reviewing.interrupt_audio_when_answering = self.form.interrupt_audio.isChecked()
+        reviewing.new_reviewer = form.new_reviewer.isChecked()
+        aqt.mw.setupReviewer(reviewing.new_reviewer)
 
         editing = self.prefs.editing
         editing.adding_defaults_to_current_deck = not form.useCurrent.currentIndex()

qt/aqt/reviewer.py

@@ -1233,6 +1233,79 @@ timerStopped = false;
     setFlag = set_flag_on_current_card
 
 
+class SvelteReviewer(Reviewer):
+    def _answerButtons(self) -> str:
+        default = self._defaultEase()
+
+        assert isinstance(self.mw.col.sched, V3Scheduler)
+        labels = self.mw.col.sched.describe_next_states(self._v3.states)
+
+        def but(i: int, label: str):
+            if i == default:
+                id = "defease"
+            else:
+                id = ""
+            due = self._buttonTime(i, v3_labels=labels)
+            key = (
+                tr.actions_shortcut_key(val=aqt.mw.pm.get_answer_key(i))
+                if aqt.mw.pm.get_answer_key(i)
+                else ""
+            )
+            return {
+                "id": id,
+                "key": key,
+                "i": i,
+                "label": label,
+                "due": due,
+            }
+
+        return [but(ease, label) for ease, label in self._answerButtonList()]  # type: ignore
+
+    def refresh_if_needed(self):
+        if self._refresh_needed:
+            self.mw.fade_in_webview()
+            self.web.eval("if (anki) {anki.changeReceived()}")
+            self._refresh_needed = None
+
+    def show(self) -> None:
+        self._initWeb()
+
+    def _remaining(self) -> str:
+        if not self.mw.col.conf["dueCounts"]:
+            return ""
+
+        idx, counts = self._v3.counts()
+        self.web.eval(f"_updateRemaining({json.dumps(counts)},{idx})")
+        return ""
+
+    def _showAnswerButton(self) -> None:
+        if self.card.should_show_timer():
+            maxTime = self.card.time_limit() / 1000
+        else:
+            maxTime = 0
+        self._remaining()
+        self.web.eval('showQuestion("",%d);' % (maxTime))
+
+    def _buttonTime(self, i: int, v3_labels: Sequence[str]) -> str:
+        return v3_labels[i - 1] if self.mw.col.conf["estTimes"] else ""
+
+    def _linkHandler(self, url: str) -> None:
+        pass
+
+    def _initWeb(self) -> None:
+        self._reps = 0
+        # hide the bottom bar
+        self.bottom.web.setHtml("<style>body {margin:0;} html {height:0;}</style>")
+        # main window
+        self.web.load_sveltekit_page("reviewer")
+        # block default drag & drop behavior while allowing drop events to be received by JS handlers
+        self.web.allow_drops = True
+        self.web.eval("_blockDefaultDragDropBehavior();")
+
+    def _shortcutKeys(self) -> Sequence[tuple[str, Callable] | tuple[Qt.Key, Callable]]:
+        return []
+
+
 # if the last element is a comment, then the RUN_STATE_MUTATION code
 # breaks due to the comment wrongly commenting out python code.
 # To prevent this we put the js code on a separate line

qt/aqt/sound.py

@@ -925,13 +925,12 @@ def play_clicked_audio(pycmd: str, card: Card) -> None:
     """eg. if pycmd is 'play:q:0', play the first audio on the question side."""
     play, context, str_idx = pycmd.split(":")
     idx = int(str_idx)
-    if context == "q":
-        tags = card.question_av_tags()
-    else:
-        tags = card.answer_av_tags()
-    av_player.play_tags([tags[idx]])
+    tags = card.question_av_tags() if context == "q" else card.answer_av_tags()
+    play_tags([tags[idx]])
 
 
+play_tags = av_player.play_tags
+
 # Init defaults
 ##########################################################################
 

qt/aqt/toolbar.py

@@ -211,7 +211,11 @@ class BottomWebView(ToolbarWebView):
     def animate_height(self, height: int) -> None:
         self.web_height = height
 
-        if self.mw.pm.reduce_motion() or height == self.height():
+        if (
+            self.mw.pm.reduce_motion()
+            or self.mw.col.conf.get("newReviewer")
+            or height == self.height()
+        ):
             self.setFixedHeight(height)
         else:
             # Collapse/Expand animation

qt/aqt/webview.py

@@ -142,6 +142,7 @@ class AnkiWebPage(QWebEnginePage):
             AnkiWebViewKind.IMPORT_ANKI_PACKAGE,
             AnkiWebViewKind.IMPORT_CSV,
             AnkiWebViewKind.IMPORT_LOG,
+            AnkiWebViewKind.MAIN,
         )
 
         global _profile_with_api_access, _profile_without_api_access

rslib/src/backend/config.rs

@@ -40,6 +40,7 @@ impl From<BoolKeyProto> for BoolKey {
             BoolKeyProto::LoadBalancerEnabled => BoolKey::LoadBalancerEnabled,
             BoolKeyProto::FsrsShortTermWithStepsEnabled => BoolKey::FsrsShortTermWithStepsEnabled,
             BoolKeyProto::FsrsLegacyEvaluate => BoolKey::FsrsLegacyEvaluate,
+            BoolKeyProto::NewReviewer => BoolKey::NewReviewer,
         }
     }
 }

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/config/bool.rs

@@ -44,6 +44,7 @@ pub enum BoolKey {
     FsrsLegacyEvaluate,
     LoadBalancerEnabled,
     FsrsShortTermWithStepsEnabled,
+    NewReviewer,
     #[strum(to_string = "normalize_note_text")]
     NormalizeNoteText,
     #[strum(to_string = "dayLearnFirst")]

rslib/src/preferences.rs

@@ -101,6 +101,7 @@ impl Collection {
             load_balancer_enabled: self.get_config_bool(BoolKey::LoadBalancerEnabled),
             fsrs_short_term_with_steps_enabled: self
                 .get_config_bool(BoolKey::FsrsShortTermWithStepsEnabled),
+            new_reviewer: self.get_config_bool(BoolKey::NewReviewer),
         })
     }
 
@@ -125,6 +126,7 @@ impl Collection {
             BoolKey::FsrsShortTermWithStepsEnabled,
             s.fsrs_short_term_with_steps_enabled,
         )?;
+        self.set_config_bool_inner(BoolKey::NewReviewer, settings.new_reviewer)?;
         Ok(())
     }
 

rslib/src/scheduler/service/mod.rs

@@ -4,9 +4,13 @@
 mod answering;
 mod states;
 
+use std::sync::LazyLock;
+
 use anki_proto::cards;
 use anki_proto::generic;
 use anki_proto::scheduler;
+use anki_proto::scheduler::next_card_data_response::AnswerButton;
+use anki_proto::scheduler::next_card_data_response::NextCardData;
 use anki_proto::scheduler::ComputeFsrsParamsResponse;
 use anki_proto::scheduler::ComputeMemoryStateResponse;
 use anki_proto::scheduler::ComputeOptimalRetentionResponse;
@@ -14,6 +18,8 @@ use anki_proto::scheduler::FsrsBenchmarkResponse;
 use anki_proto::scheduler::FuzzDeltaRequest;
 use anki_proto::scheduler::FuzzDeltaResponse;
 use anki_proto::scheduler::GetOptimalRetentionParametersResponse;
+use anki_proto::scheduler::NextCardDataRequest;
+use anki_proto::scheduler::NextCardDataResponse;
 use anki_proto::scheduler::SimulateFsrsReviewRequest;
 use anki_proto::scheduler::SimulateFsrsReviewResponse;
 use anki_proto::scheduler::SimulateFsrsWorkloadResponse;
@@ -21,15 +27,19 @@ use fsrs::ComputeParametersInput;
 use fsrs::FSRSItem;
 use fsrs::FSRSReview;
 use fsrs::FSRS;
+use regex::Regex;
 
 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;
 use crate::scheduler::states::CardState;
 use crate::scheduler::states::SchedulingStates;
 use crate::search::SortMode;
+use crate::services::NotesService;
 use crate::stats::studied_today;
+use crate::template::RenderedNode;
 
 impl crate::services::SchedulerService for Collection {
     /// This behaves like _updateCutoff() in older code - it also unburies at
@@ -382,6 +392,89 @@ impl crate::services::SchedulerService for Collection {
             delta_days: self.get_fuzz_delta(input.card_id.into(), input.interval)?,
         })
     }
+
+    fn next_card_data(&mut self, req: NextCardDataRequest) -> Result<NextCardDataResponse> {
+        if let Some(answer) = req.answer {
+            self.answer_card(&mut answer.into())?;
+        }
+        let queue = self.get_queued_cards(1, false)?;
+        let next_card = queue.cards.first();
+        if let Some(next_card) = next_card {
+            let cid = next_card.card.id;
+
+            let render = self.render_existing_card(cid, false, true)?;
+
+            let answer_buttons = self
+                .describe_next_states(&next_card.states)?
+                .into_iter()
+                .enumerate()
+                .map(|(i, due)| AnswerButton {
+                    rating: i as i32,
+                    due,
+                })
+                .collect();
+
+            let config = self.deck_config_for_card(&next_card.card)?;
+
+            // Typed answer replacements
+            static ANSWER_REGEX: LazyLock<Regex> =
+                LazyLock::new(|| Regex::new(r"\[\[type:(.+?:)?(.+?)\]\]").unwrap());
+
+            const ANSWER_HTML: &str = "<center>
+<input type=text id=typeans onkeypress=\"_typeAnsPress();\"
+   style=\"font-family: '{self.typeFont}'; font-size: {self.typeSize}px;\">
+</center>";
+
+            let mut q_nodes = render.qnodes;
+            let typed_answer_parent_node = q_nodes.iter_mut().find_map(|node| {
+                if let RenderedNode::Text { text } = node {
+                    let mut out = None;
+                    *text = ANSWER_REGEX
+                        .replace(text, |cap: &regex::Captures<'_>| {
+                            out = Some((
+                                cap.get(1).map(|g| g.as_str().to_string()),
+                                cap[2].to_string(),
+                            ));
+                            ANSWER_HTML
+                        })
+                        .to_string();
+                    out
+                } else {
+                    None
+                }
+            });
+
+            let typed_answer = typed_answer_parent_node.as_ref().map(|field| {
+                let note = self.get_note(next_card.card.note_id.into()).unwrap();
+                let notetype = self.get_notetype(note.notetype_id.into()).unwrap().unwrap();
+                note.fields[notetype.get_field_ord(&field.1).unwrap()].clone()
+            });
+
+            Ok(NextCardDataResponse {
+                next_card: Some(NextCardData {
+                    queue: Some(queue.into()),
+
+                    css: render.css.clone(),
+                    partial_front: rendered_nodes_to_proto(q_nodes),
+                    partial_back: rendered_nodes_to_proto(render.anodes),
+
+                    answer_buttons,
+                    autoplay: !config.inner.disable_autoplay,
+                    typed_answer,
+                    typed_answer_args: typed_answer_parent_node.and_then(|v| v.0),
+
+                    // Filled by python
+                    front: "".to_string(),
+                    back: "".to_string(),
+                    body_class: "".to_string(),
+                    question_av_tags: vec![],
+                    answer_av_tags: vec![],
+                }),
+            })
+        } else {
+            Ok(NextCardDataResponse::default())
+        }
+    }
 }
 
 impl crate::services::BackendSchedulerService for Backend {

ts/reviewer/index.ts

@@ -104,7 +104,7 @@ async function setInnerHTML(element: Element, html: string): Promise<void> {
     }
 }
 
-const renderError = (type: string) => (error: unknown): string => {
+export const renderError = (type: string) => (error: unknown): string => {
     const errorMessage = String(error).substring(0, 2000);
     let errorStack: string;
     if (error instanceof Error) {

ts/routes/base.scss

@@ -1,4 +1,4 @@
-@import "$lib/sass/base";
+@import "../lib/sass/base";
 
 // override Bootstrap transition duration
 $carousel-transition: var(--transition);
@@ -11,8 +11,8 @@ $carousel-transition: var(--transition);
 @import "bootstrap/scss/close";
 @import "bootstrap/scss/alert";
 @import "bootstrap/scss/badge";
-@import "$lib/sass/bootstrap-forms";
-@import "$lib/sass/bootstrap-tooltip";
+@import "../lib/sass/bootstrap-forms";
+@import "../lib/sass/bootstrap-tooltip";
 
 input[type="text"],
 input[type="date"],

ts/routes/reviewer-inner/index.ts

@@ -0,0 +1,96 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+import "../base.scss";
+import "../../reviewer/reviewer.scss";
+import "mathjax/es5/tex-chtml-full.js";
+import { renderError } from "../../reviewer";
+import { enableNightMode } from "../reviewer/reviewer";
+import type { ReviewerRequest } from "../reviewer/reviewerRequest";
+import type { InnerReviewerRequest } from "./innerReviewerRequest";
+
+function postParentMessage(message: ReviewerRequest) {
+    window.parent.postMessage(
+        message,
+        "*",
+    );
+}
+
+declare const MathJax: any;
+const urlParams = new URLSearchParams(location.search);
+
+const style = document.createElement("style");
+document.head.appendChild(style);
+
+addEventListener("message", async (e: MessageEvent<InnerReviewerRequest>) => {
+    switch (e.data.type) {
+        case "html": {
+            document.body.innerHTML = e.data.value;
+            if (e.data.css) {
+                style.innerHTML = e.data.css;
+            }
+            if (e.data.bodyclass) {
+                document.body.className = e.data.bodyclass;
+                const theme = urlParams.get("nightMode");
+                if (theme !== null) {
+                    enableNightMode();
+                    document.body.classList.add("night_mode");
+                    document.body.classList.add("nightMode");
+                }
+            }
+
+            // wait for mathjax to ready
+            await MathJax.startup.promise
+                .then(() => {
+                    // clear MathJax buffers from previous typesets
+                    MathJax.typesetClear();
+
+                    return MathJax.typesetPromise([document.body]);
+                })
+                .catch(renderError("MathJax"));
+
+            break;
+        }
+        default: {
+            console.warn(`Unknown message type: ${e.data.type}`);
+            break;
+        }
+    }
+});
+
+addEventListener("keydown", (e) => {
+    if (e.key === "Enter") {
+        postParentMessage({ type: "keypress", key: " " });
+    } else if (
+        e.key.length == 1 && "1234 ".includes(e.key)
+        && !document.activeElement?.matches("input[type=text], input[type=number], textarea")
+    ) {
+        postParentMessage({ type: "keypress", key: e.key });
+    }
+});
+
+const base = document.createElement("base");
+base.href = "/";
+document.head.appendChild(base);
+
+function pycmd(cmd: string) {
+    const match = cmd.match(/play:(q|a):(\d+)/);
+    if (match) {
+        const [_, context, index] = match;
+        postParentMessage({
+            type: "audio",
+            answerSide: context === "a",
+            index: parseInt(index),
+        });
+    }
+}
+globalThis.pycmd = pycmd;
+
+function _typeAnsPress() {
+    const elem = document.getElementById("typeans")! as HTMLInputElement;
+    let key = (window.event as KeyboardEvent).key;
+    key = key.length == 1 ? key : "";
+    postParentMessage(
+        { type: "typed", value: elem.value + key },
+    );
+}
+globalThis._typeAnsPress = _typeAnsPress;

ts/routes/reviewer-inner/innerReviewerRequest.ts

@@ -0,0 +1,10 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+interface HtmlMessage {
+    type: "html";
+    value: string;
+    css?: string;
+    bodyclass?: string;
+}
+
+export type InnerReviewerRequest = HtmlMessage;

ts/routes/reviewer/+page.svelte

@@ -0,0 +1,30 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script>
+    import { onMount } from "svelte";
+    import { ReviewerState, updateNightMode } from "./reviewer";
+    import ReviewerBottom from "./reviewer-bottom/ReviewerBottom.svelte";
+    import Reviewer from "./Reviewer.svelte";
+
+    const state = new ReviewerState();
+    onMount(() => {
+        updateNightMode();
+        globalThis.anki ??= {};
+        globalThis.anki.changeReceived = () => state.showQuestion(null);
+    });
+</script>
+
+<div>
+    <Reviewer {state}></Reviewer>
+    <ReviewerBottom {state}></ReviewerBottom>
+</div>
+
+<style>
+    div {
+        height: 100vh;
+        display: flex;
+        flex-direction: column;
+    }
+</style>

ts/routes/reviewer/Reviewer.svelte

@@ -0,0 +1,37 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import { isNightMode, type ReviewerState } from "./reviewer";
+
+    let iframe: HTMLIFrameElement;
+    export let state: ReviewerState;
+
+    $: if (iframe) {
+        state.registerIFrame(iframe);
+        state.registerShortcuts();
+    }
+</script>
+
+<div id="qa">
+    <iframe
+        src={"/_anki/pages/reviewer-inner.html" + (isNightMode() ? "?nightMode" : "")}
+        bind:this={iframe}
+        title="card"
+        frameborder="0"
+        sandbox="allow-scripts"
+    ></iframe>
+</div>
+
+<style lang="scss">
+    #qa {
+        flex: 1;
+    }
+
+    iframe {
+        width: 100%;
+        height: 100%;
+        visibility: hidden;
+    }
+</style>

ts/routes/reviewer/reviewer-bottom/AnswerButton.svelte

@@ -0,0 +1,37 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import type { NextCardDataResponse_AnswerButton } from "@generated/anki/scheduler_pb";
+    import * as tr from "@generated/ftl";
+    import type { ReviewerState } from "../reviewer";
+
+    export let info: NextCardDataResponse_AnswerButton;
+    export let state: ReviewerState;
+
+    const labels = [
+        tr.studyingAgain(),
+        tr.studyingHard(),
+        tr.studyingGood(),
+        tr.studyingEasy(),
+    ];
+    $: label = labels[info.rating];
+</script>
+
+<span>
+    {#if info.due}
+        {info.due}
+    {:else}
+        &nbsp;
+    {/if}
+</span>
+<button on:click={() => state.easeButtonPressed(info.rating)}>
+    {label}
+</button>
+
+<style>
+    span {
+        text-align: center;
+    }
+</style>

ts/routes/reviewer/reviewer-bottom/More.svelte

@@ -0,0 +1,75 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import DropdownItem from "$lib/components/DropdownItem.svelte";
+    import * as tr from "@generated/ftl";
+    import MoreSubmenu from "./MoreSubmenu.svelte";
+    import MoreItem from "./MoreItem.svelte";
+    import { setFlag } from "@generated/backend";
+    import type { ReviewerState } from "../reviewer";
+
+    let showFloating = false;
+    let showFlags = false;
+    export let state: ReviewerState;
+
+    const flags = [
+        { colour: tr.actionsFlagRed(), shortcut: "Ctrl+1" },
+        { colour: tr.actionsFlagOrange(), shortcut: "Ctrl+2" },
+        { colour: tr.actionsFlagGreen(), shortcut: "Ctrl+3" },
+        { colour: tr.actionsFlagBlue(), shortcut: "Ctrl+4" },
+        { colour: tr.actionsFlagPink(), shortcut: "Ctrl+5" },
+        { colour: tr.actionsFlagTurquoise(), shortcut: "Ctrl+6" },
+        { colour: tr.actionsFlagPurple(), shortcut: "Ctrl+7" },
+    ];
+
+    function changeFlag(index: number) {
+        setFlag({ cardIds: [state.currentCard!.card!.id], flag: index });
+    }
+</script>
+
+<MoreSubmenu bind:showFloating>
+    <button
+        slot="button"
+        on:click={() => {
+            showFloating = !showFloating;
+        }}
+        title={tr.actionsShortcutKey({ val: "M" })}
+    >
+        {tr.studyingMore()}{"▾"}
+    </button>
+
+    <div slot="items">
+        <MoreSubmenu bind:showFloating={showFlags}>
+            <DropdownItem
+                slot="button"
+                on:click={() => {
+                    showFlags = !showFlags;
+                }}
+            >
+                {tr.studyingFlagCard()}
+            </DropdownItem>
+            <div slot="items">
+                {#each flags as flag, i}
+                    <MoreItem
+                        shortcut={flag.shortcut}
+                        onClick={() => changeFlag(i + 1)}
+                    >
+                        {flag.colour}
+                    </MoreItem>
+                {/each}
+            </div>
+        </MoreSubmenu>
+    </div>
+</MoreSubmenu>
+
+<style>
+    div :global(button) {
+        width: fit-content;
+    }
+
+    button {
+        line-height: 18px;
+    }
+</style>

ts/routes/reviewer/reviewer-bottom/MoreItem.svelte

@@ -0,0 +1,14 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import DropdownItem from "$lib/components/DropdownItem.svelte";
+    import Shortcut from "$lib/components/Shortcut.svelte";
+
+    export let shortcut: string = "";
+    export let onClick = () => {};
+</script>
+
+<Shortcut keyCombination={shortcut} on:keydown={onClick}></Shortcut>
+<DropdownItem on:click={onClick}><slot /></DropdownItem>

ts/routes/reviewer/reviewer-bottom/MoreSubmenu.svelte

@@ -0,0 +1,20 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import Popover from "$lib/components/Popover.svelte";
+    import WithFloating from "$lib/components/WithFloating.svelte";
+
+    export let showFloating = false;
+</script>
+
+<div>
+    <WithFloating show={showFloating} inline on:close={() => (showFloating = false)}>
+        <slot slot="reference" name="button"></slot>
+
+        <Popover slot="floating">
+            <slot name="items" />
+        </Popover>
+    </WithFloating>
+</div>

ts/routes/reviewer/reviewer-bottom/Remaining.svelte

@@ -0,0 +1,40 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import { QueuedCards_Queue } from "@generated/anki/scheduler_pb";
+    import type { ReviewerState } from "../reviewer";
+    import RemainingNumber from "./RemainingNumber.svelte";
+
+    export let state: ReviewerState;
+    const cardData = state.cardData;
+    $: queue = $cardData?.queue;
+    $: underlined = queue?.cards[0].queue;
+</script>
+
+<span>
+    <RemainingNumber
+        cls="new-count"
+        underlined={underlined === QueuedCards_Queue.NEW}
+        count={queue?.newCount}
+    ></RemainingNumber>
+    {"+"}
+    <RemainingNumber
+        cls="learn-count"
+        underlined={underlined === QueuedCards_Queue.LEARNING}
+        count={queue?.learningCount}
+    ></RemainingNumber>
+    {"+"}
+    <RemainingNumber
+        cls="review-count"
+        underlined={underlined === QueuedCards_Queue.REVIEW}
+        count={queue?.reviewCount}
+    ></RemainingNumber>
+</span>
+
+<style>
+    span {
+        text-align: center;
+    }
+</style>

ts/routes/reviewer/reviewer-bottom/RemainingNumber.svelte

@@ -0,0 +1,19 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    export let underlined: boolean;
+    export let cls: string;
+    export let count: number | undefined;
+
+    $: displayCount = count?.toFixed(0) ?? "?";
+</script>
+
+<span class={cls}>
+    {#if underlined}
+        <u>{displayCount}</u>
+    {:else}
+        {displayCount}
+    {/if}
+</span>

ts/routes/reviewer/reviewer-bottom/ReviewerBottom.svelte

@@ -0,0 +1,86 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<script lang="ts">
+    import "./index.scss";
+
+    import AnswerButton from "./AnswerButton.svelte";
+    import { bridgeCommand } from "@tslib/bridgecommand";
+    import * as tr from "@generated/ftl";
+    import type { ReviewerState } from "../reviewer";
+    import Remaining from "./Remaining.svelte";
+    import More from "./More.svelte";
+
+    export let state: ReviewerState;
+
+    const answerButtons = state.answerButtons;
+    const answerShown = state.answerShown;
+
+    $: button_count = $answerShown ? $answerButtons.length : 1;
+</script>
+
+<div id="outer" class="fancy">
+    <div id="tableinner" style="--answer-button-count: {button_count}">
+        <span class="disappearing"></span>
+        <div class="disappearing edit">
+            <button
+                title={tr.actionsShortcutKey({ val: "E" })}
+                on:click={() => bridgeCommand("edit")}
+            >
+                {tr.studyingEdit()}
+            </button>
+        </div>
+        {#if $answerShown}
+            {#each $answerButtons as answerButton}
+                <AnswerButton {state} info={answerButton}></AnswerButton>
+            {/each}
+        {:else}
+            <Remaining {state}></Remaining>
+            <button on:click={() => state.showAnswer()}>
+                {tr.studyingShowAnswer()}
+            </button>
+        {/if}
+        <span class="disappearing"></span>
+        <div class="disappearing more">
+            <More {state}></More>
+        </div>
+    </div>
+</div>
+
+<style lang="scss">
+    #tableinner {
+        width: 100%;
+        display: grid;
+        grid-template-columns: 1fr repeat(var(--answer-button-count, 1), auto) 1fr;
+        grid-template-rows: auto auto;
+        justify-content: space-between;
+        justify-items: center;
+        align-items: center;
+        grid-auto-flow: column;
+    }
+
+    #outer {
+        padding: 8px;
+    }
+
+    .more,
+    .edit {
+        width: 100%;
+    }
+
+    .more {
+        text-align: right;
+    }
+
+    @media (max-width: 583px) {
+        .disappearing {
+            display: none;
+        }
+
+        #tableinner {
+            grid-template-columns: repeat(var(--answer-button-count, 1), auto);
+            justify-content: center;
+        }
+    }
+</style>

ts/routes/reviewer/reviewer-bottom/index.scss

@@ -0,0 +1,15 @@
+/* Copyright: Ankitects Pty Ltd and contributors
+ * License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html */
+
+@use "../../../../qt/aqt/data/web/css/reviewer-bottom.scss";
+@use "../../../../qt/aqt/data/web/css/toolbar.scss";
+@use "../../../lib/sass/buttons";
+
+html body {
+    font-size: 12px;
+    height: 72px;
+
+    button {
+        min-width: 80px;
+    }
+}

ts/routes/reviewer/reviewer-bottom/types.ts

@@ -0,0 +1,9 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+export interface AnswerButtonInfo {
+    "extra": string;
+    "key": string;
+    "i": number;
+    "label": string;
+    "due": string;
+}

ts/routes/reviewer/reviewer.ts

@@ -0,0 +1,187 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+import { CardAnswer, type NextCardDataResponse_NextCardData } from "@generated/anki/scheduler_pb";
+import { compareAnswer, nextCardData, playAvtags } from "@generated/backend";
+import { derived, get, writable } from "svelte/store";
+import type { InnerReviewerRequest } from "../reviewer-inner/innerReviewerRequest";
+import type { ReviewerRequest } from "./reviewerRequest";
+
+export function isNightMode() {
+    // https://stackoverflow.com/a/57795518
+    // This will be true in browsers if darkmode but also false in the reviewer if darkmode
+    // If in the reviewer then this will need to be set by the python instead
+    return (window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches)
+        || document.documentElement.classList.contains("night-mode");
+}
+
+export function enableNightMode() {
+    document.documentElement.classList.add("night-mode");
+    document.documentElement.setAttribute("data-bs-theme", "dark");
+}
+
+export function updateNightMode() {
+    if (isNightMode()) {
+        enableNightMode();
+    }
+}
+
+const typedAnswerRegex = /\[\[type:(.+?:)?(.+?)\]\]/m;
+
+export class ReviewerState {
+    answerHtml = "";
+    currentTypedAnswer = "";
+    _cardData: NextCardDataResponse_NextCardData | undefined = undefined;
+    beginAnsweringMs = Date.now();
+    readonly cardClass = writable("");
+    readonly answerShown = writable(false);
+    readonly cardData = writable<NextCardDataResponse_NextCardData | undefined>(undefined);
+    readonly answerButtons = derived(this.cardData, ($cardData) => $cardData?.answerButtons ?? []);
+
+    iframe: HTMLIFrameElement | undefined = undefined;
+
+    onReady() {
+        this.iframe!.style.visibility = "visible";
+        this.showQuestion(null);
+        addEventListener("message", this.onMessage.bind(this));
+    }
+
+    async onMessage(e: MessageEvent<ReviewerRequest>) {
+        switch (e.data.type) {
+            case "audio": {
+                const tags = get(this.answerShown) ? this._cardData!.answerAvTags : this._cardData!.questionAvTags;
+                playAvtags({ tags: [tags[e.data.index]] });
+                break;
+            }
+            case "typed": {
+                this.currentTypedAnswer = e.data.value;
+                break;
+            }
+            case "keypress": {
+                this.handleKeyPress(e.data.key);
+                break;
+            }
+        }
+    }
+
+    public registerIFrame(iframe: HTMLIFrameElement) {
+        this.iframe = iframe;
+        iframe.addEventListener("load", this.onReady.bind(this));
+    }
+
+    handleKeyPress(key: string) {
+        switch (key) {
+            case "1": {
+                this.easeButtonPressed(0);
+                break;
+            }
+            case "2": {
+                this.easeButtonPressed(1);
+                break;
+            }
+            case "3": {
+                this.easeButtonPressed(2);
+                break;
+            }
+            case "4": {
+                this.easeButtonPressed(3);
+                break;
+            }
+            case " ": {
+                if (!get(this.answerShown)) {
+                    this.showAnswer();
+                } else {
+                    this.easeButtonPressed(2);
+                }
+                break;
+            }
+        }
+    }
+
+    onKeyDown(e: KeyboardEvent) {
+        this.handleKeyPress(e.key);
+    }
+
+    public registerShortcuts() {
+        document.addEventListener("keydown", this.onKeyDown.bind(this));
+    }
+
+    sendInnerRequest(message: InnerReviewerRequest) {
+        this.iframe?.contentWindow?.postMessage(message, "*");
+    }
+
+    updateHtml(htmlString: string, css?: string, bodyclass?: string) {
+        this.sendInnerRequest({ type: "html", value: htmlString, css, bodyclass });
+    }
+
+    async showQuestion(answer: CardAnswer | null) {
+        const resp = await nextCardData({
+            answer: answer || undefined,
+        });
+
+        // TODO: "Congratulation screen" logic
+        this._cardData = resp.nextCard;
+        this.cardData.set(this._cardData);
+        this.answerShown.set(false);
+
+        const question = resp.nextCard?.front || "";
+        this.updateHtml(question, resp?.nextCard?.css, resp?.nextCard?.bodyClass);
+        if (this._cardData?.autoplay) {
+            playAvtags({ tags: this._cardData!.questionAvTags });
+        }
+
+        this.beginAnsweringMs = Date.now();
+    }
+
+    get currentCard() {
+        return this._cardData?.queue?.cards[0];
+    }
+
+    async showTypedAnswer(html: string) {
+        if (!this._cardData?.typedAnswer || !this._cardData.typedAnswerArgs) {
+            return html;
+        }
+        const compareAnswerResp = await compareAnswer({
+            expected: this._cardData?.typedAnswer,
+            provided: this.currentTypedAnswer,
+            combining: !this._cardData.typedAnswerArgs.includes("nc"),
+        });
+        const display = compareAnswerResp.val;
+
+        console.log({ typedAnswerRegex, html, display });
+        return html.replace(typedAnswerRegex, display);
+    }
+
+    public async showAnswer() {
+        this.answerShown.set(true);
+        if (this._cardData?.autoplay) {
+            playAvtags({ tags: this._cardData!.answerAvTags });
+        }
+        this.updateHtml(await this.showTypedAnswer(this._cardData?.back || ""));
+    }
+
+    public easeButtonPressed(rating: number) {
+        if (!get(this.answerShown)) {
+            return;
+        }
+
+        const states = this.currentCard!.states!;
+
+        const newState = [
+            states.again!,
+            states.hard!,
+            states.good!,
+            states.easy!,
+        ][rating]!;
+
+        this.showQuestion(
+            new CardAnswer({
+                rating: rating,
+                currentState: states!.current!,
+                newState,
+                cardId: this.currentCard?.card?.id,
+                answeredAtMillis: BigInt(Date.now()),
+                millisecondsTaken: Date.now() - this.beginAnsweringMs,
+            }),
+        );
+    }
+}

ts/routes/reviewer/reviewerRequest.ts

@@ -0,0 +1,19 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+interface AudioMessage {
+    type: "audio";
+    answerSide: boolean;
+    index: number;
+}
+
+interface UpdateTypedAnswerMessage {
+    type: "typed";
+    value: string;
+}
+
+interface KeyPressMessage {
+    type: "keypress";
+    key: string;
+}
+
+export type ReviewerRequest = AudioMessage | UpdateTypedAnswerMessage | KeyPressMessage;