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-rw-r--r--ext/js/data/anki-note-builder.js88
1 files changed, 87 insertions, 1 deletions
diff --git a/ext/js/data/anki-note-builder.js b/ext/js/data/anki-note-builder.js
index 38f1eb16..b84b2eda 100644
--- a/ext/js/data/anki-note-builder.js
+++ b/ext/js/data/anki-note-builder.js
@@ -24,6 +24,8 @@ class AnkiNoteBuilder {
constructor() {
this._markerPattern = AnkiUtil.cloneFieldMarkerPattern(true);
this._templateRenderer = new TemplateRendererProxy();
+ this._batchedRequests = [];
+ this._batchedRequestsQueued = false;
}
async createNote({
@@ -113,7 +115,7 @@ class AnkiNoteBuilder {
async _formatField(field, commonData, template, errors=null) {
return await this._stringReplaceAsync(field, this._markerPattern, async (g0, marker) => {
try {
- return await this._renderTemplate(template, marker, commonData);
+ return await this._renderTemplateBatched(template, commonData, marker);
} catch (e) {
if (Array.isArray(errors)) {
const error = new Error(`Template render error for {${marker}}`);
@@ -143,4 +145,88 @@ class AnkiNoteBuilder {
async _renderTemplate(template, marker, commonData) {
return await this._templateRenderer.render(template, {marker, commonData}, 'ankiNote');
}
+
+ _getBatchedTemplateGroup(template) {
+ for (const item of this._batchedRequests) {
+ if (item.template === template) {
+ return item;
+ }
+ }
+
+ const result = {template, commonDataRequestsMap: new Map()};
+ this._batchedRequests.push(result);
+ return result;
+ }
+
+ _renderTemplateBatched(template, commonData, marker) {
+ const {promise, resolve, reject} = deferPromise();
+ const {commonDataRequestsMap} = this._getBatchedTemplateGroup(template);
+ let requests = commonDataRequestsMap.get(commonData);
+ if (typeof requests === 'undefined') {
+ requests = [];
+ commonDataRequestsMap.set(commonData, requests);
+ }
+ requests.push({resolve, reject, marker});
+ this._runBatchedRequestsDelayed();
+ return promise;
+ }
+
+ _runBatchedRequestsDelayed() {
+ if (this._batchedRequestsQueued) { return; }
+ this._batchedRequestsQueued = true;
+ Promise.resolve().then(() => {
+ this._batchedRequestsQueued = false;
+ this._runBatchedRequests();
+ });
+ }
+
+ _runBatchedRequests() {
+ if (this._batchedRequests.length === 0) { return; }
+
+ const allRequests = [];
+ const items = [];
+ for (const {template, commonDataRequestsMap} of this._batchedRequests) {
+ const templateItems = [];
+ for (const [commonData, requests] of commonDataRequestsMap.entries()) {
+ const datas = [];
+ for (const {marker} of requests) {
+ datas.push(marker);
+ }
+ allRequests.push(...requests);
+ templateItems.push({type: 'ankiNote', commonData, datas});
+ }
+ items.push({template, templateItems});
+ }
+
+ this._batchedRequests.length = 0;
+
+ this._resolveBatchedRequests(items, allRequests);
+ }
+
+ async _resolveBatchedRequests(items, requests) {
+ let responses;
+ try {
+ responses = await this._templateRenderer.renderMulti(items);
+ } catch (e) {
+ for (const {reject} of requests) {
+ reject(e);
+ }
+ return;
+ }
+
+ for (let i = 0, ii = requests.length; i < ii; ++i) {
+ const request = requests[i];
+ try {
+ const response = responses[i];
+ const {error} = response;
+ if (typeof error !== 'undefined') {
+ throw deserializeError(error);
+ } else {
+ request.resolve(response.result);
+ }
+ } catch (e) {
+ request.reject(e);
+ }
+ }
+ }
}