add new lesson mode and started code refraction

server/src/services/review.service.js

@@ -83,3 +83,22 @@ export const getQueue = async (user, limit = 100, sortMode) => {
 	}
 	return dueItems;
 };
+
+export const getLessonQueue = async (user, limit = 100) => {
+	const query = {
+		userId: user._id,
+		srsLevel: 0
+	};
+	return await StudyItem.find(query).sort({ level: 1, wkSubjectId: 1 }).limit(limit);
+};
+
+export const processLesson = async (user, subjectId) => {
+	const item = await StudyItem.findOne({ userId: user._id, wkSubjectId: subjectId });
+	if (!item) throw new Error('Item not found');
+
+	item.srsLevel = 1;
+	item.nextReview = new Date();
+
+	await item.save();
+	return { success: true, item };
+};