From 7b90409f2ed81ae6a04b21893780c9666bd63e52 Mon Sep 17 00:00:00 2001 From: Elijah Date: Mon, 13 Jul 2026 14:56:33 -0700 Subject: [PATCH] Add deck generation and study flow improvements --- package-lock.json | 840 ++++++- package.json | 7 +- .../migration.sql | 64 + prisma/schema.prisma | 88 +- .../spaced-repetition/[setId]/page.tsx | 5 + .../[classSlug]/spaced-repetition/page.tsx | 5 + src/app/(protected)/page.tsx | 12 + .../[id]/decks/[deckId]/route.ts | 16 + .../[id]/decks/route.ts | 43 + .../[id]/reviews/route.ts | 22 + .../api/spaced-repetition-sets/[id]/route.ts | 45 + .../[id]/study/route.ts | 15 + src/app/api/spaced-repetition-sets/route.ts | 30 + .../SpacedRepetitionSets.tsx | 365 +++ .../SpacedRepetitionViewer.tsx | 220 ++ src/components/ui/Navbar.tsx | 49 +- src/config/studyModes.ts | 1 + src/generated/prisma/browser.ts | 15 + src/generated/prisma/client.ts | 15 + src/generated/prisma/internal/class.ts | 38 +- .../prisma/internal/prismaNamespace.ts | 278 ++- .../prisma/internal/prismaNamespaceBrowser.ts | 51 +- src/generated/prisma/models.ts | 3 + src/generated/prisma/models/Class.ts | 130 ++ src/generated/prisma/models/Deck.ts | 146 ++ src/generated/prisma/models/Flashcard.ts | 137 ++ .../models/SpacedRepetitionCardState.ts | 2004 +++++++++++++++++ .../prisma/models/SpacedRepetitionSet.ts | 1776 +++++++++++++++ .../prisma/models/SpacedRepetitionSetDeck.ts | 1470 ++++++++++++ src/lib/spacedRepetition.test.ts | 121 + src/lib/spacedRepetition.ts | 162 ++ src/lib/spacedRepetitionApi.ts | 9 + src/lib/validation/spacedRepetitionSchemas.ts | 44 + src/services/classService.ts | 27 +- src/services/spacedRepetitionService.ts | 448 ++++ vitest.config.ts | 13 + 36 files changed, 8683 insertions(+), 31 deletions(-) create mode 100644 prisma/migrations/20260713200500_add_spaced_repetition/migration.sql create mode 100644 src/app/(protected)/[classSlug]/spaced-repetition/[setId]/page.tsx create mode 100644 src/app/(protected)/[classSlug]/spaced-repetition/page.tsx create mode 100644 src/app/api/spaced-repetition-sets/[id]/decks/[deckId]/route.ts create mode 100644 src/app/api/spaced-repetition-sets/[id]/decks/route.ts create mode 100644 src/app/api/spaced-repetition-sets/[id]/reviews/route.ts create mode 100644 src/app/api/spaced-repetition-sets/[id]/route.ts create mode 100644 src/app/api/spaced-repetition-sets/[id]/study/route.ts create mode 100644 src/app/api/spaced-repetition-sets/route.ts create mode 100644 src/components/spaced-repetition/SpacedRepetitionSets.tsx create mode 100644 src/components/spaced-repetition/SpacedRepetitionViewer.tsx create mode 100644 src/generated/prisma/models/SpacedRepetitionCardState.ts create mode 100644 src/generated/prisma/models/SpacedRepetitionSet.ts create mode 100644 src/generated/prisma/models/SpacedRepetitionSetDeck.ts create mode 100644 src/lib/spacedRepetition.test.ts create mode 100644 src/lib/spacedRepetition.ts create mode 100644 src/lib/spacedRepetitionApi.ts create mode 100644 src/lib/validation/spacedRepetitionSchemas.ts create mode 100644 src/services/spacedRepetitionService.ts create mode 100644 vitest.config.ts diff --git a/package-lock.json b/package-lock.json index e127911..f81787d 100644 --- a/package-lock.json +++ b/package-lock.json @@ -22,6 +22,7 @@ "react-dom": "19.2.4", "react-markdown": "^10.1.0", "remark-gfm": "^4.0.1", + "ts-fsrs": "^5.4.1", "zod": "^4.4.3" }, "devDependencies": { @@ -33,7 +34,8 @@ "eslint-config-next": "16.2.9", "prisma": "^7.8.0", "tailwindcss": "^4", - "typescript": "^5" + "typescript": "^5", + "vitest": "^4.1.10" } }, "node_modules/@alloc/quick-lru": { @@ -1349,6 +1351,16 @@ "node": ">=12.4.0" } }, + "node_modules/@oxc-project/types": { + "version": "0.139.0", + "resolved": "https://registry.npmjs.org/@oxc-project/types/-/types-0.139.0.tgz", + "integrity": "sha512-r9gHphtCs+1M7J0pw6Sn/hh/Wpa/iQrOOkrNAlVLF/gHq+/CJmHIWKKUUhdWjcD6CIa8idarspCsASiXCXvFUw==", + "dev": true, + 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a/package.json +++ b/package.json @@ -6,7 +6,8 @@ "dev": "next dev", "build": "next build", "start": "next start", - "lint": "eslint" + "lint": "eslint", + "test": "vitest run" }, "dependencies": { "@dnd-kit/core": "^6.3.1", @@ -23,6 +24,7 @@ "react-dom": "19.2.4", "react-markdown": "^10.1.0", "remark-gfm": "^4.0.1", + "ts-fsrs": "^5.4.1", "zod": "^4.4.3" }, "devDependencies": { @@ -34,6 +36,7 @@ "eslint-config-next": "16.2.9", "prisma": "^7.8.0", "tailwindcss": "^4", - "typescript": "^5" + "typescript": "^5", + "vitest": "^4.1.10" } } diff --git a/prisma/migrations/20260713200500_add_spaced_repetition/migration.sql b/prisma/migrations/20260713200500_add_spaced_repetition/migration.sql new file mode 100644 index 0000000..abdf670 --- /dev/null +++ b/prisma/migrations/20260713200500_add_spaced_repetition/migration.sql @@ -0,0 +1,64 @@ +-- CreateTable +CREATE TABLE "SpacedRepetitionSet" ( + "id" TEXT NOT NULL PRIMARY KEY, + "classId" TEXT NOT NULL, + "name" TEXT NOT NULL, + "description" TEXT, + "newCardsPerDay" INTEGER NOT NULL DEFAULT 30, + "sortOrder" INTEGER NOT NULL DEFAULT 0, + "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, + "updatedAt" DATETIME NOT NULL, + CONSTRAINT "SpacedRepetitionSet_classId_fkey" FOREIGN KEY ("classId") REFERENCES "Class" ("id") ON DELETE CASCADE ON UPDATE CASCADE +); + +-- CreateTable +CREATE TABLE "SpacedRepetitionSetDeck" ( + "setId" TEXT NOT NULL, + "deckId" TEXT NOT NULL, + "sortOrder" INTEGER NOT NULL DEFAULT 0, + "addedAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, + + PRIMARY KEY ("setId", "deckId"), + CONSTRAINT "SpacedRepetitionSetDeck_setId_fkey" FOREIGN KEY ("setId") REFERENCES "SpacedRepetitionSet" ("id") ON DELETE CASCADE ON UPDATE CASCADE, + CONSTRAINT "SpacedRepetitionSetDeck_deckId_fkey" FOREIGN KEY ("deckId") REFERENCES "Deck" ("id") ON DELETE CASCADE ON UPDATE CASCADE +); + +-- CreateTable +CREATE TABLE "SpacedRepetitionCardState" ( + "id" TEXT NOT NULL PRIMARY KEY, + "setId" TEXT NOT NULL, + "flashcardId" TEXT NOT NULL, + "due" DATETIME NOT NULL, + "stability" REAL NOT NULL, + "difficulty" REAL NOT NULL, + "elapsedDays" INTEGER NOT NULL, + "scheduledDays" INTEGER NOT NULL, + "learningSteps" INTEGER NOT NULL DEFAULT 0, + "reps" INTEGER NOT NULL, + "lapses" INTEGER NOT NULL, + "state" INTEGER NOT NULL, + "firstReviewedAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, + "lastReview" DATETIME, + "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, + "updatedAt" DATETIME NOT NULL, + CONSTRAINT "SpacedRepetitionCardState_setId_fkey" FOREIGN KEY ("setId") REFERENCES "SpacedRepetitionSet" ("id") ON DELETE CASCADE ON UPDATE CASCADE, + CONSTRAINT "SpacedRepetitionCardState_flashcardId_fkey" FOREIGN KEY ("flashcardId") REFERENCES "Flashcard" ("id") ON DELETE CASCADE ON UPDATE CASCADE +); + +-- CreateIndex +CREATE INDEX "SpacedRepetitionSet_classId_sortOrder_idx" ON "SpacedRepetitionSet"("classId", "sortOrder"); + +-- CreateIndex +CREATE INDEX "SpacedRepetitionSetDeck_deckId_idx" ON "SpacedRepetitionSetDeck"("deckId"); + +-- CreateIndex +CREATE INDEX "SpacedRepetitionCardState_setId_due_idx" ON "SpacedRepetitionCardState"("setId", "due"); + +-- CreateIndex +CREATE INDEX "SpacedRepetitionCardState_setId_firstReviewedAt_idx" ON "SpacedRepetitionCardState"("setId", "firstReviewedAt"); + +-- CreateIndex +CREATE INDEX "SpacedRepetitionCardState_flashcardId_idx" ON "SpacedRepetitionCardState"("flashcardId"); + +-- CreateIndex +CREATE UNIQUE INDEX "SpacedRepetitionCardState_setId_flashcardId_key" ON "SpacedRepetitionCardState"("setId", "flashcardId"); diff --git a/prisma/schema.prisma b/prisma/schema.prisma index be359a1..cfec0f4 100644 --- a/prisma/schema.prisma +++ b/prisma/schema.prisma @@ -14,9 +14,10 @@ model Class { sortOrder Int @default(0) createdAt DateTime @default(now()) - decks Deck[] - quizSets QuizSet[] - materialGroups MaterialGroup[] + decks Deck[] + quizSets QuizSet[] + materialGroups MaterialGroup[] + spacedRepetitionSets SpacedRepetitionSet[] } model Deck { @@ -27,12 +28,13 @@ model Deck { sortOrder Int @default(0) createdAt DateTime @default(now()) - class Class @relation(fields: [classId], references: [id], onDelete: Cascade) - groupId String? - group MaterialGroup? @relation(fields: [groupId], references: [id], onDelete: SetNull) - cards Flashcard[] - shareLink ShareLink? - progress StudyProgress[] + class Class @relation(fields: [classId], references: [id], onDelete: Cascade) + groupId String? + group MaterialGroup? @relation(fields: [groupId], references: [id], onDelete: SetNull) + cards Flashcard[] + shareLink ShareLink? + progress StudyProgress[] + spacedRepetitionMemberships SpacedRepetitionSetDeck[] } model Flashcard { @@ -42,7 +44,8 @@ model Flashcard { back String sortOrder Int @default(0) - deck Deck @relation(fields: [deckId], references: [id], onDelete: Cascade) + deck Deck @relation(fields: [deckId], references: [id], onDelete: Cascade) + spacedRepetitionStates SpacedRepetitionCardState[] } model QuizSet { @@ -53,9 +56,9 @@ model QuizSet { sortOrder Int @default(0) createdAt DateTime @default(now()) - class Class @relation(fields: [classId], references: [id], onDelete: Cascade) + class Class @relation(fields: [classId], references: [id], onDelete: Cascade) groupId String? - group MaterialGroup? @relation(fields: [groupId], references: [id], onDelete: SetNull) + group MaterialGroup? @relation(fields: [groupId], references: [id], onDelete: SetNull) questions Question[] attempts QuizAttempt[] shareLink ShareLink? @@ -153,12 +156,69 @@ model MaterialGroup { id String @id @default(uuid()) classId String name String - type String // "DECK" | "QUIZ" + type String // "DECK" | "QUIZ" sortOrder Int @default(0) createdAt DateTime @default(now()) - class Class @relation(fields: [classId], references: [id], onDelete: Cascade) + class Class @relation(fields: [classId], references: [id], onDelete: Cascade) decks Deck[] quizSets QuizSet[] shareLink ShareLink? } + +model SpacedRepetitionSet { + id String @id @default(uuid()) + classId String + name String + description String? + newCardsPerDay Int @default(30) + sortOrder Int @default(0) + createdAt DateTime @default(now()) + updatedAt DateTime @updatedAt + + class Class @relation(fields: [classId], references: [id], onDelete: Cascade) + decks SpacedRepetitionSetDeck[] + cardStates SpacedRepetitionCardState[] + + @@index([classId, sortOrder]) +} + +model SpacedRepetitionSetDeck { + setId String + deckId String + sortOrder Int @default(0) + addedAt DateTime @default(now()) + + set SpacedRepetitionSet @relation(fields: [setId], references: [id], onDelete: Cascade) + deck Deck @relation(fields: [deckId], references: [id], onDelete: Cascade) + + @@id([setId, deckId]) + @@index([deckId]) +} + +model SpacedRepetitionCardState { + id String @id @default(uuid()) + setId String + flashcardId String + due DateTime + stability Float + difficulty Float + elapsedDays Int + scheduledDays Int + learningSteps Int @default(0) + reps Int + lapses Int + state Int + firstReviewedAt DateTime @default(now()) + lastReview DateTime? + createdAt DateTime @default(now()) + updatedAt DateTime @updatedAt + + set SpacedRepetitionSet @relation(fields: [setId], references: [id], onDelete: Cascade) + flashcard Flashcard @relation(fields: [flashcardId], references: [id], onDelete: Cascade) + + @@unique([setId, flashcardId]) + @@index([setId, due]) + @@index([setId, firstReviewedAt]) + @@index([flashcardId]) +} diff --git a/src/app/(protected)/[classSlug]/spaced-repetition/[setId]/page.tsx b/src/app/(protected)/[classSlug]/spaced-repetition/[setId]/page.tsx new file mode 100644 index 0000000..4bd9feb --- /dev/null +++ b/src/app/(protected)/[classSlug]/spaced-repetition/[setId]/page.tsx @@ -0,0 +1,5 @@ +import { SpacedRepetitionViewer } from "@/components/spaced-repetition/SpacedRepetitionViewer"; + +export default function SpacedRepetitionStudyPage() { + return ; +} diff --git a/src/app/(protected)/[classSlug]/spaced-repetition/page.tsx b/src/app/(protected)/[classSlug]/spaced-repetition/page.tsx new file mode 100644 index 0000000..b07ee3b --- /dev/null +++ b/src/app/(protected)/[classSlug]/spaced-repetition/page.tsx @@ -0,0 +1,5 @@ +import { SpacedRepetitionSets } from "@/components/spaced-repetition/SpacedRepetitionSets"; + +export default function SpacedRepetitionPage() { + return ; +} diff --git a/src/app/(protected)/page.tsx b/src/app/(protected)/page.tsx index ba8de20..5d37387 100644 --- a/src/app/(protected)/page.tsx +++ b/src/app/(protected)/page.tsx @@ -9,6 +9,10 @@ interface ClassItem { slug: string; name: string; _count: { decks: number; quizSets: number }; + spacedRepetitionDueCards: number; + spacedRepetitionLearningCards: number; + spacedRepetitionNewCards: number; + spacedRepetitionReadyCards: number; } const accents = ["#4f46e5", "#f97360", "#25845f", "#c27718", "#8b5cf6", "#0284c7"]; @@ -114,6 +118,14 @@ export default function HomePage() {
{cls._count.decks} {cls._count.decks === 1 ? "deck" : "decks"} {cls._count.quizSets} {cls._count.quizSets === 1 ? "quiz" : "quizzes"} + {cls.spacedRepetitionReadyCards > 0 && ( + + {cls.spacedRepetitionReadyCards} {cls.spacedRepetitionReadyCards === 1 ? "card" : "cards"} ready + + )}
diff --git a/src/app/api/spaced-repetition-sets/[id]/decks/[deckId]/route.ts b/src/app/api/spaced-repetition-sets/[id]/decks/[deckId]/route.ts new file mode 100644 index 0000000..8abeee4 --- /dev/null +++ b/src/app/api/spaced-repetition-sets/[id]/decks/[deckId]/route.ts @@ -0,0 +1,16 @@ +import { NextRequest, NextResponse } from "next/server"; +import { spacedRepetitionErrorResponse } from "@/lib/spacedRepetitionApi"; +import * as spacedRepetitionService from "@/services/spacedRepetitionService"; + +export async function DELETE( + _request: NextRequest, + context: { params: Promise<{ id: string; deckId: string }> } +) { + const { id, deckId } = await context.params; + try { + await spacedRepetitionService.removeDeck(id, deckId); + return NextResponse.json({ success: true }); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} diff --git a/src/app/api/spaced-repetition-sets/[id]/decks/route.ts b/src/app/api/spaced-repetition-sets/[id]/decks/route.ts new file mode 100644 index 0000000..805af67 --- /dev/null +++ b/src/app/api/spaced-repetition-sets/[id]/decks/route.ts @@ -0,0 +1,43 @@ +import { NextRequest, NextResponse } from "next/server"; +import { + addSpacedRepetitionDeckSchema, + reorderSpacedRepetitionDecksSchema, +} from "@/lib/validation/spacedRepetitionSchemas"; +import { spacedRepetitionErrorResponse } from "@/lib/spacedRepetitionApi"; +import * as spacedRepetitionService from "@/services/spacedRepetitionService"; + +export async function POST( + request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + const parsed = addSpacedRepetitionDeckSchema.safeParse( + await request.json().catch(() => null) + ); + if (!parsed.success) return NextResponse.json({ error: "Invalid deck" }, { status: 400 }); + try { + return NextResponse.json( + await spacedRepetitionService.addDeck(id, parsed.data.deckId), + { status: 201 } + ); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} + +export async function PATCH( + request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + const parsed = reorderSpacedRepetitionDecksSchema.safeParse( + await request.json().catch(() => null) + ); + if (!parsed.success) return NextResponse.json({ error: "Invalid deck order" }, { status: 400 }); + try { + await spacedRepetitionService.reorderDecks(id, parsed.data.deckIds); + return NextResponse.json({ success: true }); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} diff --git a/src/app/api/spaced-repetition-sets/[id]/reviews/route.ts b/src/app/api/spaced-repetition-sets/[id]/reviews/route.ts new file mode 100644 index 0000000..4e11cf8 --- /dev/null +++ b/src/app/api/spaced-repetition-sets/[id]/reviews/route.ts @@ -0,0 +1,22 @@ +import { NextRequest, NextResponse } from "next/server"; +import { reviewSpacedRepetitionCardSchema } from "@/lib/validation/spacedRepetitionSchemas"; +import { spacedRepetitionErrorResponse } from "@/lib/spacedRepetitionApi"; +import * as spacedRepetitionService from "@/services/spacedRepetitionService"; + +export async function POST( + request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + const parsed = reviewSpacedRepetitionCardSchema.safeParse( + await request.json().catch(() => null) + ); + if (!parsed.success) return NextResponse.json({ error: "Invalid review" }, { status: 400 }); + try { + return NextResponse.json( + await spacedRepetitionService.reviewCard({ setId: id, ...parsed.data }) + ); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} diff --git a/src/app/api/spaced-repetition-sets/[id]/route.ts b/src/app/api/spaced-repetition-sets/[id]/route.ts new file mode 100644 index 0000000..721f616 --- /dev/null +++ b/src/app/api/spaced-repetition-sets/[id]/route.ts @@ -0,0 +1,45 @@ +import { NextRequest, NextResponse } from "next/server"; +import { updateSpacedRepetitionSetSchema } from "@/lib/validation/spacedRepetitionSchemas"; +import { spacedRepetitionErrorResponse } from "@/lib/spacedRepetitionApi"; +import * as spacedRepetitionService from "@/services/spacedRepetitionService"; + +export async function GET( + _request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + try { + return NextResponse.json(await spacedRepetitionService.getSet(id)); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} + +export async function PATCH( + request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + const parsed = updateSpacedRepetitionSetSchema.safeParse( + await request.json().catch(() => null) + ); + if (!parsed.success) return NextResponse.json({ error: "Invalid update" }, { status: 400 }); + try { + return NextResponse.json(await spacedRepetitionService.updateSet(id, parsed.data)); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} + +export async function DELETE( + _request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + try { + await spacedRepetitionService.deleteSet(id); + return NextResponse.json({ success: true }); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} diff --git a/src/app/api/spaced-repetition-sets/[id]/study/route.ts b/src/app/api/spaced-repetition-sets/[id]/study/route.ts new file mode 100644 index 0000000..5addeed --- /dev/null +++ b/src/app/api/spaced-repetition-sets/[id]/study/route.ts @@ -0,0 +1,15 @@ +import { NextRequest, NextResponse } from "next/server"; +import { spacedRepetitionErrorResponse } from "@/lib/spacedRepetitionApi"; +import * as spacedRepetitionService from "@/services/spacedRepetitionService"; + +export async function GET( + _request: NextRequest, + context: { params: Promise<{ id: string }> } +) { + const { id } = await context.params; + try { + return NextResponse.json(await spacedRepetitionService.getStudyState(id)); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} diff --git a/src/app/api/spaced-repetition-sets/route.ts b/src/app/api/spaced-repetition-sets/route.ts new file mode 100644 index 0000000..bcc2ec3 --- /dev/null +++ b/src/app/api/spaced-repetition-sets/route.ts @@ -0,0 +1,30 @@ +import { NextRequest, NextResponse } from "next/server"; +import { createSpacedRepetitionSetSchema } from "@/lib/validation/spacedRepetitionSchemas"; +import { spacedRepetitionErrorResponse } from "@/lib/spacedRepetitionApi"; +import * as spacedRepetitionService from "@/services/spacedRepetitionService"; + +export async function GET(request: NextRequest) { + const classId = new URL(request.url).searchParams.get("classId"); + if (!classId) return NextResponse.json({ error: "classId is required" }, { status: 400 }); + try { + return NextResponse.json(await spacedRepetitionService.listSetsByClass(classId)); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} + +export async function POST(request: NextRequest) { + const parsed = createSpacedRepetitionSetSchema.safeParse( + await request.json().catch(() => null) + ); + if (!parsed.success) { + return NextResponse.json({ error: "Invalid repetition set" }, { status: 400 }); + } + try { + return NextResponse.json(await spacedRepetitionService.createSet(parsed.data), { + status: 201, + }); + } catch (error) { + return spacedRepetitionErrorResponse(error); + } +} diff --git a/src/components/spaced-repetition/SpacedRepetitionSets.tsx b/src/components/spaced-repetition/SpacedRepetitionSets.tsx new file mode 100644 index 0000000..af0b9b3 --- /dev/null +++ b/src/components/spaced-repetition/SpacedRepetitionSets.tsx @@ -0,0 +1,365 @@ +"use client"; + +/* eslint-disable react-hooks/refs -- @dnd-kit intentionally returns render-time ref callbacks and drag state. */ + +import { useCallback, useEffect, useState } from "react"; +import Link from "next/link"; +import { useParams } from "next/navigation"; +import { + DndContext, + KeyboardSensor, + PointerSensor, + pointerWithin, + useDraggable, + useDndContext, + useDroppable, + useSensor, + useSensors, + type DragEndEvent, +} from "@dnd-kit/core"; +import { + SortableContext, + arrayMove, + sortableKeyboardCoordinates, + useSortable, + verticalListSortingStrategy, +} from "@dnd-kit/sortable"; +import { CSS } from "@dnd-kit/utilities"; + +interface DeckSummary { + id: string; + name: string; + description: string | null; + sortOrder?: number; + _count: { cards: number }; +} + +interface SetSummary { + id: string; + name: string; + description: string | null; + newCardsPerDay: number; + decks: DeckSummary[]; + stats: { + totalCards: number; + reviewedCards: number; + unseenCards: number; + dueCards: number; + learningAheadCards: number; + newCardsAvailable: number; + availableCards: number; + nextDue: string | null; + }; +} + +interface EditState { + id: string; + name: string; + description: string; + newCardsPerDay: number; +} + +function notifyStudyAvailabilityChanged() { + window.dispatchEvent(new Event("spaced-repetition-updated")); +} + +function SourceDeck({ deck }: { deck: DeckSummary }) { + const drag = useDraggable({ + id: `source:${deck.id}`, + data: { deckId: deck.id, sourceSetId: null }, + }); + return ( +
+ +
+

{deck.name}

+

{deck._count.cards} cards

+
+
+ ); +} + +function MembershipDeck({ deck, setId, onRemove }: { + deck: DeckSummary; + setId: string; + onRemove: () => void; +}) { + const sortable = useSortable({ + id: `set:${setId}:deck:${deck.id}`, + data: { deckId: deck.id, sourceSetId: setId, setId }, + }); + return ( +
+ +
+

{deck.name}

+

{deck._count.cards} cards

+
+ +
+ ); +} + +function SetDropZone({ set, children }: { set: SetSummary; children: React.ReactNode }) { + const drop = useDroppable({ id: `set:${set.id}`, data: { setId: set.id } }); + const { over } = useDndContext(); + const isOver = + over?.id === `set:${set.id}` || over?.data.current?.setId === set.id; + return ( +
+ {children} +
+ ); +} + +export function SpacedRepetitionSets() { + const { classSlug } = useParams<{ classSlug: string }>(); + const [classId, setClassId] = useState(""); + const [sets, setSets] = useState([]); + const [decks, setDecks] = useState([]); + const [loading, setLoading] = useState(true); + const [creating, setCreating] = useState(false); + const [newName, setNewName] = useState(""); + const [editing, setEditing] = useState(null); + const [message, setMessage] = useState(null); + const sensors = useSensors( + useSensor(PointerSensor, { activationConstraint: { distance: 6 } }), + useSensor(KeyboardSensor, { coordinateGetter: sortableKeyboardCoordinates }) + ); + + const load = useCallback(async () => { + setLoading(true); + try { + const classesResponse = await fetch("/api/classes"); + const classes = (await classesResponse.json()) as Array<{ id: string; slug: string }>; + const currentClass = classes.find((item) => item.slug === classSlug); + if (!currentClass) throw new Error("Class not found"); + setClassId(currentClass.id); + const [setsResponse, decksResponse] = await Promise.all([ + fetch(`/api/spaced-repetition-sets?classId=${currentClass.id}`), + fetch(`/api/decks/list?classId=${currentClass.id}`), + ]); + if (!setsResponse.ok || !decksResponse.ok) throw new Error("Unable to load repetition sets"); + setSets(await setsResponse.json()); + setDecks(await decksResponse.json()); + } catch (error) { + setMessage(error instanceof Error ? error.message : "Unable to load repetition sets"); + } finally { + setLoading(false); + } + }, [classSlug]); + + useEffect(() => { + const timer = window.setTimeout(() => void load(), 0); + return () => window.clearTimeout(timer); + }, [load]); + + async function createSet() { + if (!newName.trim()) return; + const response = await fetch("/api/spaced-repetition-sets", { + method: "POST", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ classId, name: newName, newCardsPerDay: 30 }), + }); + if (!response.ok) return setMessage("Could not create repetition set"); + setNewName(""); + setCreating(false); + await load(); + } + + async function saveEdit() { + if (!editing) return; + const response = await fetch(`/api/spaced-repetition-sets/${editing.id}`, { + method: "PATCH", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ + name: editing.name, + description: editing.description, + newCardsPerDay: editing.newCardsPerDay, + }), + }); + if (!response.ok) return setMessage("Could not update repetition set"); + setEditing(null); + notifyStudyAvailabilityChanged(); + await load(); + } + + async function deleteSet(set: SetSummary) { + if (!confirm(`Delete “${set.name}”? Its spaced-repetition schedules will be permanently removed.`)) return; + const response = await fetch(`/api/spaced-repetition-sets/${set.id}`, { method: "DELETE" }); + if (!response.ok) return setMessage("Could not delete repetition set"); + notifyStudyAvailabilityChanged(); + await load(); + } + + async function removeDeck(set: SetSummary, deck: DeckSummary) { + if (!confirm(`Remove “${deck.name}” from “${set.name}”? Its scheduling history in this set will be reset.`)) return; + const response = await fetch(`/api/spaced-repetition-sets/${set.id}/decks/${deck.id}`, { method: "DELETE" }); + if (!response.ok) return setMessage("Could not remove deck"); + notifyStudyAvailabilityChanged(); + await load(); + } + + async function addDeck(setId: string, deckId: string) { + const target = sets.find((set) => set.id === setId); + const deck = decks.find((item) => item.id === deckId); + if (target?.decks.some((item) => item.id === deckId)) { + setMessage(`${deck?.name ?? "That deck"} is already in ${target.name}.`); + return; + } + const response = await fetch(`/api/spaced-repetition-sets/${setId}/decks`, { + method: "POST", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ deckId }), + }); + if (!response.ok) return setMessage((await response.json()).error ?? "Could not add deck"); + setMessage(`${deck?.name ?? "Deck"} added.`); + notifyStudyAvailabilityChanged(); + await load(); + } + + async function handleDragEnd(event: DragEndEvent) { + const activeData = event.active.data.current as { deckId?: string; sourceSetId?: string | null } | undefined; + const overData = event.over?.data.current as { setId?: string; deckId?: string } | undefined; + if (!activeData?.deckId || !overData?.setId) return; + const targetSetId = overData.setId; + + if (activeData.sourceSetId === targetSetId && overData.deckId) { + const target = sets.find((set) => set.id === targetSetId); + if (!target) return; + const oldIndex = target.decks.findIndex((deck) => deck.id === activeData.deckId); + const newIndex = target.decks.findIndex((deck) => deck.id === overData.deckId); + if (oldIndex < 0 || newIndex < 0 || oldIndex === newIndex) return; + const ordered = arrayMove(target.decks, oldIndex, newIndex); + setSets((current) => current.map((set) => set.id === targetSetId ? { ...set, decks: ordered } : set)); + const response = await fetch(`/api/spaced-repetition-sets/${targetSetId}/decks`, { + method: "PATCH", + headers: { "Content-Type": "application/json" }, + body: JSON.stringify({ deckIds: ordered.map((deck) => deck.id) }), + }); + if (!response.ok) await load(); + return; + } + await addDeck(targetSetId, activeData.deckId); + } + + if (loading) return
Loading repetition sets…
; + + return ( +
+
+

Adaptive review

Spaced repetition

+ +
+ + {message &&
{message}
} + + {creating && ( +
+ setNewName(event.target.value)} onKeyDown={(event) => event.key === "Enter" && createSet()} placeholder="e.g. Patho comprehensive review" className="min-h-11 flex-1 rounded-lg border border-border bg-bg-surface-alt px-3 text-text-heading" /> + + +
+ )} + + +
+ {sets.length === 0 &&

No repetition sets yet

Create one, then drag flashcard decks into it.

} + {sets.map((set) => ( +
+
+
+

{set.name}

+ {set.description &&

{set.description}

} +
+ {set.stats.totalCards} cards + {set.stats.dueCards} due + {set.stats.learningAheadCards > 0 && {set.stats.learningAheadCards} learning} + {set.stats.newCardsAvailable} new today + Limit {set.newCardsPerDay}/day +
+
+
+ {set.stats.totalCards === 0 ? : set.stats.availableCards > 0 ? ( + {set.stats.reviewedCards === 0 ? "Study" : "Continue"} · {set.stats.availableCards} + ) : Caught up} + + +
+
+ `set:${set.id}:deck:${deck.id}`)} strategy={verticalListSortingStrategy}> + + {set.decks.length === 0 ?

Drop flashcard decks here

: set.decks.map((deck) => removeDeck(set, deck)} />)} + + +
+ ))} + +
+

Source library

+

Flashcard decks

+

Drag a deck into any repetition set. The original deck stays here and can be reused.

+ {decks.length ?
{decks.map((deck) => )}
:
Create flashcard decks before building a repetition set.
} +
+
+ + + {editing && ( +
+
+

Edit repetition set

+ + setEditing({ ...editing, name: event.target.value })} className="mt-1 min-h-11 w-full rounded-lg border border-border bg-bg-surface-alt px-3 text-text-heading" /> + +