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import { zValidator } from "@hono/zod-validator";
import { Hono } from "hono";
import { z } from "zod";
import { computeNextSchedule } from "../../shared/fsrs.js";
import { authMiddleware, Errors, getAuthUser } from "../middleware/index.js";
import {
type CardRepository,
cardRepository,
type DeckRepository,
deckRepository,
type ReviewLogRepository,
reviewLogRepository,
} from "../repositories/index.js";
import { submitReviewSchema } from "../schemas/index.js";
export interface StudyDependencies {
cardRepo: CardRepository;
deckRepo: DeckRepository;
reviewLogRepo: ReviewLogRepository;
}
const deckIdParamSchema = z.object({
deckId: z.uuid(),
});
const cardIdParamSchema = z.object({
deckId: z.uuid(),
cardId: z.uuid(),
});
export function createStudyRouter(deps: StudyDependencies) {
const { cardRepo, deckRepo, reviewLogRepo } = deps;
return new Hono()
.use("*", authMiddleware)
.get("/", zValidator("param", deckIdParamSchema), async (c) => {
const user = getAuthUser(c);
const { deckId } = c.req.valid("param");
// Verify deck ownership
const deck = await deckRepo.findById(deckId, user.id);
if (!deck) {
throw Errors.notFound("Deck not found", "DECK_NOT_FOUND");
}
const now = new Date();
const cards = await cardRepo.findDueCardsForStudy(deckId, now);
return c.json({ cards }, 200);
})
.post(
"/:cardId",
zValidator("param", cardIdParamSchema),
zValidator("json", submitReviewSchema),
async (c) => {
const user = getAuthUser(c);
const { deckId, cardId } = c.req.valid("param");
const { rating, durationMs } = c.req.valid("json");
// Verify deck ownership
const deck = await deckRepo.findById(deckId, user.id);
if (!deck) {
throw Errors.notFound("Deck not found", "DECK_NOT_FOUND");
}
// Get the card
const card = await cardRepo.findById(cardId, deckId);
if (!card) {
throw Errors.notFound("Card not found", "CARD_NOT_FOUND");
}
const now = new Date();
const next = computeNextSchedule(card, rating, now);
// Update the card with new FSRS values
const updatedCard = await cardRepo.updateFSRSFields(cardId, deckId, {
state: next.state,
due: next.due,
stability: next.stability,
difficulty: next.difficulty,
elapsedDays: next.elapsedDays,
scheduledDays: next.scheduledDays,
reps: next.reps,
lapses: next.lapses,
lastReview: next.lastReview,
});
// Create review log
await reviewLogRepo.create({
cardId,
userId: user.id,
rating,
state: card.state,
scheduledDays: next.scheduledDays,
elapsedDays: next.reviewElapsedDays,
durationMs: durationMs ?? null,
});
return c.json({ card: updatedCard }, 200);
},
);
}
export const study = createStudyRouter({
cardRepo: cardRepository,
deckRepo: deckRepository,
reviewLogRepo: reviewLogRepository,
});
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