feat: full book management system with backend API, frontend UI, and spec docs

- Backend: Book model with reading progress, DRF ViewSet with full CRUD, search, sort, filter, pagination, mark-as-finished, stats endpoint - Frontend: Library grid, BookCard, BookDetail, BookForm components with React 19 + TypeScript + Vite - Tests: 29 passing tests covering models, API, serializers, permissions - Spec: backend api-spec.md and frontend component-spec.md in docs/ Closes crisleo-hermes/cloud-reader#3
2026-05-26 04:35:13 +00:00
commit 84d8fed3f2
49 changed files with 4205 additions and 0 deletions
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 # Python
 __pycache__/
 *.py[cod]
 *.egg-info/
 dist/
 *.egg
 .venv/
 venv/
 *.sqlite3
 # Node
 node_modules/
 dist/
 build/
 .yarn/
 yarn-error.log
 # IDE
 .vscode/
 .idea/
 *.swp
 *.swo
 # OS
 .DS_Store
 Thumbs.db
 # Environment
 .env
 .env.local
 .env.production
 # Build artifacts (generated)
 frontend/dist/
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 from __future__ import annotations
 from django.contrib import admin
 from books.models import Book
@admin.register(Book)
 class BookAdmin(admin.ModelAdmin):
    """Admin configuration for the Book model."""
    list_display = ["title", "author", "genre", "reading_status", "reading_progress", "owner", "updated_at"]
    list_filter = ["reading_status", "genre"]
    search_fields = ["title", "author"]
    readonly_fields = ["reading_progress", "created_at", "updated_at"]
    raw_id_fields = ["owner"]
@@ -0,0 +1,5 @@
 from django.apps import AppConfig
 class BooksConfig(AppConfig):
    name = 'books'
@@ -0,0 +1,41 @@
 # Generated by Django 6.0.5 on 2026-05-26 00:49
 import django.db.models.deletion
 from django.conf import settings
 from django.db import migrations, models
 class Migration(migrations.Migration):
    initial = True
    dependencies = [
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]
    operations = [
        migrations.CreateModel(
            name='Book',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('title', models.CharField(max_length=500, verbose_name='Title')),
                ('author', models.CharField(max_length=500, verbose_name='Author')),
                ('genre', models.CharField(blank=True, default='', max_length=200, verbose_name='Genre')),
                ('description', models.TextField(blank=True, default='', verbose_name='Description')),
                ('cover_image_url', models.URLField(blank=True, default='', verbose_name='Cover Image URL')),
                ('isbn', models.CharField(blank=True, default='', max_length=20, verbose_name='ISBN')),
                ('total_pages', models.PositiveIntegerField(default=0, verbose_name='Total Pages')),
                ('current_page', models.PositiveIntegerField(default=0, verbose_name='Current Page')),
                ('reading_status', models.CharField(choices=[('not_started', 'Not Started'), ('reading', 'Reading'), ('finished', 'Finished'), ('dnf', 'Did Not Finish')], default='not_started', max_length=20, verbose_name='Reading Status')),
                ('created_at', models.DateTimeField(auto_now_add=True, verbose_name='Created At')),
                ('updated_at', models.DateTimeField(auto_now=True, verbose_name='Updated At')),
                ('owner', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='books', to=settings.AUTH_USER_MODEL, verbose_name='Owner')),
            ],
            options={
                'verbose_name': 'Book',
                'verbose_name_plural': 'Books',
                'ordering': ['-updated_at'],
                'indexes': [models.Index(fields=['owner', 'reading_status'], name='books_book_owner_i_424622_idx'), models.Index(fields=['owner', 'title'], name='books_book_owner_i_350794_idx'), models.Index(fields=['owner', 'author'], name='books_book_owner_i_f90626_idx')],
            },
        ),
    ]
@@ -0,0 +1,66 @@
 from __future__ import annotations
 from django.db import models
 from django.utils.translation import gettext_lazy as _
 class ReadingStatus(models.TextChoices):
    """Enumeration of possible reading statuses for a book."""
    NOT_STARTED = "not_started", _("Not Started")
    READING = "reading", _("Reading")
    FINISHED = "finished", _("Finished")
    DNF = "dnf", _("Did Not Finish")
 class Book(models.Model):
    """Represents a book in the user's library."""
    title = models.CharField(max_length=500, verbose_name=_("Title"))
    author = models.CharField(max_length=500, verbose_name=_("Author"))
    genre = models.CharField(max_length=200, blank=True, default="", verbose_name=_("Genre"))
    description = models.TextField(blank=True, default="", verbose_name=_("Description"))
    cover_image_url = models.URLField(blank=True, default="", verbose_name=_("Cover Image URL"))
    isbn = models.CharField(max_length=20, blank=True, default="", verbose_name=_("ISBN"))
    total_pages = models.PositiveIntegerField(default=0, verbose_name=_("Total Pages"))
    current_page = models.PositiveIntegerField(default=0, verbose_name=_("Current Page"))
    reading_status = models.CharField(
        max_length=20,
        choices=ReadingStatus.choices,
        default=ReadingStatus.NOT_STARTED,
        verbose_name=_("Reading Status"),
    )
    owner = models.ForeignKey(
        "auth.User",
        on_delete=models.CASCADE,
        related_name="books",
        verbose_name=_("Owner"),
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created At"))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
    class Meta:
        ordering = ["-updated_at"]
        verbose_name = _("Book")
        verbose_name_plural = _("Books")
        indexes = [
            models.Index(fields=["owner", "reading_status"]),
            models.Index(fields=["owner", "title"]),
            models.Index(fields=["owner", "author"]),
        ]
    def __str__(self) -> str:
        return f"{self.title} by {self.author}"
    @property
    def reading_progress(self) -> float:
        """Calculate reading progress as a percentage (0.0 - 100.0)."""
        if self.total_pages == 0:
            return 0.0
        return round((self.current_page / self.total_pages) * 100, 1)
    def mark_as_finished(self) -> None:
        """Mark the book as finished, setting progress to 100%."""
        self.reading_status = ReadingStatus.FINISHED
        self.current_page = self.total_pages
        self.save(update_fields=["reading_status", "current_page", "updated_at"])
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 from __future__ import annotations
 from rest_framework import serializers
 from books.models import Book, ReadingStatus
 class BookListSerializer(serializers.ModelSerializer):
    """Lightweight serializer for list views — avoids heavy field serialization."""
    reading_progress = serializers.FloatField(read_only=True)
    class Meta:
        model = Book
        fields = [
            "id",
            "title",
            "author",
            "genre",
            "reading_status",
            "reading_progress",
            "cover_image_url",
            "created_at",
            "updated_at",
        ]
 class BookDetailSerializer(serializers.ModelSerializer):
    """Full serializer for book detail views including all metadata."""
    reading_progress = serializers.FloatField(read_only=True)
    owner = serializers.ReadOnlyField(source="owner.username")
    class Meta:
        model = Book
        fields = [
            "id",
            "title",
            "author",
            "genre",
            "description",
            "cover_image_url",
            "isbn",
            "total_pages",
            "current_page",
            "reading_status",
            "reading_progress",
            "owner",
            "created_at",
            "updated_at",
        ]
        read_only_fields = ["owner", "created_at", "updated_at", "reading_progress"]
    def validate_title(self, value: str) -> str:
        """Ensure title is not just whitespace."""
        stripped = value.strip()
        if not stripped:
            msg = "Title cannot be empty."
            raise serializers.ValidationError(msg)
        return stripped
    def validate_author(self, value: str) -> str:
        """Ensure author is not just whitespace."""
        stripped = value.strip()
        if not stripped:
            msg = "Author cannot be empty."
            raise serializers.ValidationError(msg)
        return stripped
    def validate(self, attrs: dict) -> dict:
        """Business rules — handles both full creates and partial updates."""
        # Resolve effective values: use provided attrs, fall back to instance
        current_total = getattr(self.instance, "total_pages", None)
        current_current = getattr(self.instance, "current_page", None)
        total_pages = attrs.get("total_pages", current_total) or 0
        current_page = attrs.get("current_page", current_current) or 0
        reading_status = attrs.get("reading_status", None)
        if current_page > total_pages > 0:
            msg = "Current page cannot exceed total pages."
            raise serializers.ValidationError({"current_page": msg})
        if reading_status == ReadingStatus.FINISHED:
            if total_pages > 0:
                attrs["current_page"] = total_pages
            elif self.instance and self.instance.total_pages > 0:
                attrs["current_page"] = self.instance.total_pages
        return attrs
 class BookWriteSerializer(BookDetailSerializer):
    """Alias for detail serializer — used for write operations with full validation."""
    pass
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 """Tests for the books app — API endpoints, models, serializers, and permissions."""
 from __future__ import annotations
 from django.contrib.auth.models import User
 from django.test import TestCase, override_settings
 from rest_framework import status
 from rest_framework.test import APIClient
 from books.models import Book, ReadingStatus
 class BookModelTests(TestCase):
    """Tests for the Book model."""
    def setUp(self) -> None:
        self.user = User.objects.create_user(username="testuser", password="testpass123")
        self.book = Book.objects.create(
            title="Test Book",
            author="Test Author",
            total_pages=200,
            current_page=50,
            reading_status=ReadingStatus.READING,
            owner=self.user,
        )
    def test_reading_progress_calculates_correctly(self) -> None:
        """Reading progress should be (current_page / total_pages) * 100."""
        assert self.book.reading_progress == 25.0
    def test_reading_progress_returns_zero_when_no_pages(self) -> None:
        """When total_pages is 0, reading_progress should be 0.0."""
        book = Book.objects.create(
            title="No Pages",
            author="Author",
            total_pages=0,
            current_page=50,
            owner=self.user,
        )
        assert book.reading_progress == 0.0
    def test_mark_as_finished_sets_progress_to_100(self) -> None:
        """mark_as_finished should set status to FINISHED and progress to 100%."""
        self.book.mark_as_finished()
        self.book.refresh_from_db()
        assert self.book.reading_status == ReadingStatus.FINISHED
        assert self.book.current_page == self.book.total_pages
    def test_mark_as_finished_with_zero_pages(self) -> None:
        """mark_as_finished with total_pages=0 should set 0/0."""
        book = Book.objects.create(
            title="Empty",
            author="Author",
            total_pages=0,
            current_page=0,
            owner=self.user,
        )
        book.mark_as_finished()
        book.refresh_from_db()
        assert book.reading_status == ReadingStatus.FINISHED
        assert book.current_page == 0
    def test_str_method(self) -> None:
        """__str__ should return 'Title by Author'."""
        assert str(self.book) == "Test Book by Test Author"
 class BookAPITests(TestCase):
    """Tests for the Book API endpoints."""
    def setUp(self) -> None:
        self.client = APIClient()
        self.user = User.objects.create_user(username="testuser", password="testpass123")
        self.other_user = User.objects.create_user(username="other", password="testpass123")
        self.client.force_authenticate(user=self.user)
        self.book = Book.objects.create(
            title="My Book",
            author="My Author",
            genre="Fiction",
            description="A great book",
            total_pages=200,
            current_page=50,
            reading_status=ReadingStatus.READING,
            owner=self.user,
        )
        # Other user's book (should not be visible)
        Book.objects.create(
            title="Other Book",
            author="Other Author",
            total_pages=100,
            owner=self.other_user,
        )
    # --- List ---
    def test_list_books_returns_owned_books_only(self) -> None:
        """GET /api/books/ should only return books owned by the current user."""
        resp = self.client.get("/api/books/")
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["count"] == 1
        assert resp.data["results"][0]["title"] == "My Book"
    def test_list_books_requires_authentication(self) -> None:
        """GET /api/books/ without auth should return 403."""
        self.client.force_authenticate(user=None)
        resp = self.client.get("/api/books/")
        assert resp.status_code == status.HTTP_403_FORBIDDEN
    # --- Create ---
    def test_create_book_sets_owner(self) -> None:
        """POST /api/books/ should create a book owned by the current user."""
        resp = self.client.post("/api/books/", {
            "title": "New Book",
            "author": "New Author",
        }, format="json")
        assert resp.status_code == status.HTTP_201_CREATED
        assert resp.data["owner"] == "testuser"
        assert Book.objects.filter(title="New Book", owner=self.user).exists()
    def test_create_book_validates_required_fields(self) -> None:
        """POST /api/books/ with missing title should fail."""
        resp = self.client.post("/api/books/", {
            "author": "Author Only",
        }, format="json")
        assert resp.status_code == status.HTTP_400_BAD_REQUEST
    # --- Retrieve ---
    def test_retrieve_book(self) -> None:
        """GET /api/books/{id}/ should return full book details."""
        resp = self.client.get(f"/api/books/{self.book.id}/")
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["title"] == "My Book"
        assert resp.data["reading_progress"] == 25.0
        assert resp.data["owner"] == "testuser"
    def test_retrieve_other_users_book_returns_404(self) -> None:
        """GET /api/books/{other_id}/ should return 404 for another user's book."""
        other_book = Book.objects.get(title="Other Book")
        resp = self.client.get(f"/api/books/{other_book.id}/")
        assert resp.status_code == status.HTTP_404_NOT_FOUND
    # --- Update ---
    def test_update_book(self) -> None:
        """PATCH /api/books/{id}/ should update book fields."""
        resp = self.client.patch(f"/api/books/{self.book.id}/", {
            "title": "Updated Title",
            "current_page": 100,
        }, format="json")
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["title"] == "Updated Title"
        assert resp.data["reading_progress"] == 50.0
    def test_update_current_page_exceeds_total(self) -> None:
        """PATCH with current_page > total_pages should fail."""
        resp = self.client.patch(f"/api/books/{self.book.id}/", {
            "current_page": 999,
        }, format="json")
        assert resp.status_code == status.HTTP_400_BAD_REQUEST
    # --- Delete ---
    def test_delete_book(self) -> None:
        """DELETE /api/books/{id}/ should delete the book."""
        resp = self.client.delete(f"/api/books/{self.book.id}/")
        assert resp.status_code == status.HTTP_204_NO_CONTENT
        assert not Book.objects.filter(id=self.book.id).exists()
    # --- Mark Finished ---
    def test_mark_finished_sets_100_percent(self) -> None:
        """POST /api/books/{id}/mark_finished/ should set progress to 100%."""
        resp = self.client.post(f"/api/books/{self.book.id}/mark_finished/")
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["reading_status"] == ReadingStatus.FINISHED
        assert resp.data["reading_progress"] == 100.0
    def test_mark_finished_idempotent(self) -> None:
        """Calling mark_finished twice should be safe."""
        self.client.post(f"/api/books/{self.book.id}/mark_finished/")
        resp = self.client.post(f"/api/books/{self.book.id}/mark_finished/")
        assert resp.status_code == status.HTTP_200_OK
    def test_mark_finished_other_users_book(self) -> None:
        """POST mark_finished on another user's book should return 404."""
        other_book = Book.objects.get(title="Other Book")
        resp = self.client.post(f"/api/books/{other_book.id}/mark_finished/")
        assert resp.status_code == status.HTTP_404_NOT_FOUND
    # --- Stats ---
    def test_stats_returns_counts(self) -> None:
        """GET /api/books/stats/ should return aggregate counts."""
        resp = self.client.get("/api/books/stats/")
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["total_books"] == 1
        assert resp.data["finished"] == 0
        assert resp.data["reading"] == 1
        assert resp.data["not_started"] == 0
    # --- Filtering & Sorting ---
    def test_filter_by_reading_status(self) -> None:
        """GET /api/books/?reading_status=reading should filter correctly."""
        resp = self.client.get("/api/books/", {"reading_status": "reading"})
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["count"] == 1
        resp = self.client.get("/api/books/", {"reading_status": "finished"})
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["count"] == 0
    def test_search_by_title(self) -> None:
        """GET /api/books/?search=My should filter by title."""
        resp = self.client.get("/api/books/", {"search": "My"})
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["count"] == 1
        resp = self.client.get("/api/books/", {"search": "Nonexistent"})
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["count"] == 0
    def test_search_by_author(self) -> None:
        """GET /api/books/?search=My should filter by author."""
        resp = self.client.get("/api/books/", {"search": "My Author"})
        assert resp.status_code == status.HTTP_200_OK
        assert resp.data["count"] == 1
    def test_sort_by_title(self) -> None:
        """GET /api/books/?sort_by=title should sort alphabetically."""
        Book.objects.create(title="Aardvark", author="Author", owner=self.user)
        Book.objects.create(title="Zebra", author="Author", owner=self.user)
        resp = self.client.get("/api/books/", {"sort_by": "title"})
        assert resp.status_code == status.HTTP_200_OK
        titles = [b["title"] for b in resp.data["results"]]
        assert titles == sorted(titles)
    def test_sort_by_author_desc(self) -> None:
        """GET /api/books/?sort_by=-author should sort by author desc."""
        resp = self.client.get("/api/books/", {"sort_by": "-author"})
        assert resp.status_code == status.HTTP_200_OK
    # --- Pagination ---
    def test_pagination_default_page_size(self) -> None:
        """Books should be paginated with default page size."""
        for i in range(25):
            Book.objects.create(
                title=f"Book {i}",
                author="Author",
                owner=self.user,
            )
        resp = self.client.get("/api/books/")
        assert resp.status_code == status.HTTP_200_OK
        assert len(resp.data["results"]) == 20  # PAGE_SIZE = 20
        assert resp.data["count"] == 26  # 1 original + 25 new
    def test_pagination_second_page(self) -> None:
        """GET /api/books/?page=2 should return remaining items."""
        for i in range(25):
            Book.objects.create(
                title=f"Book {i}",
                author="Author",
                owner=self.user,
            )
        resp = self.client.get("/api/books/", {"page": 2})
        assert resp.status_code == status.HTTP_200_OK
        assert len(resp.data["results"]) == 6
 class BookSerializerTests(TestCase):
    """Tests for serializers — validation rules."""
    def setUp(self) -> None:
        self.user = User.objects.create_user(username="testuser", password="testpass123")
    def test_current_page_cannot_exceed_total(self) -> None:
        """Serializer should reject current_page > total_pages."""
        from books.serializers import BookDetailSerializer
        data = {
            "title": "Test",
            "author": "Author",
            "total_pages": 100,
            "current_page": 150,
        }
        serializer = BookDetailSerializer(data=data)
        assert not serializer.is_valid()
        assert "current_page" in serializer.errors
    def test_title_cannot_be_blank(self) -> None:
        """Serializer should reject blank title."""
        from books.serializers import BookDetailSerializer
        data = {
            "title": "   ",
            "author": "Author",
        }
        serializer = BookDetailSerializer(data=data)
        assert not serializer.is_valid()
        assert "title" in serializer.errors
    def test_author_cannot_be_blank(self) -> None:
        """Serializer should reject blank author."""
        from books.serializers import BookDetailSerializer
        data = {
            "title": "Test",
            "author": "",
        }
        serializer = BookDetailSerializer(data=data)
        assert not serializer.is_valid()
        assert "author" in serializer.errors
    def test_list_serializer_has_minimal_fields(self) -> None:
        """BookListSerializer should exclude sensitive/fluff fields."""
        from books.serializers import BookListSerializer
        serializer = BookListSerializer()
        fields = set(serializer.fields.keys())
        assert "id" in fields
        assert "title" in fields
        assert "author" in fields
        assert "reading_progress" in fields
        assert "description" not in fields
        assert "isbn" not in fields
@@ -0,0 +1,13 @@
 from __future__ import annotations
 from django.urls import include, path
 from rest_framework.routers import DefaultRouter
 from books.views import BookViewSet
 router = DefaultRouter()
 router.register(r"books", BookViewSet, basename="book")
 urlpatterns = [
    path("", include(router.urls)),
 ]
@@ -0,0 +1,91 @@
 from __future__ import annotations
 from django.db import models
 from django.db.models import QuerySet
 from rest_framework import status, viewsets
 from rest_framework.decorators import action
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.request import Request
 from rest_framework.response import Response
 from books.models import Book, ReadingStatus
 from books.serializers import BookDetailSerializer, BookListSerializer
 class BookViewSet(viewsets.ModelViewSet):
    """
    ViewSet for managing books in the user's library.
    Provides:
    - list / retrieve / create / update / partial_update / destroy
    - `mark_finished` action to set a book as 100% complete
    - `stats` action for library overview counts
    """
    permission_classes = [IsAuthenticated]
    def get_serializer_class(self) -> type:
        if self.action == "list":
            return BookListSerializer
        return BookDetailSerializer
    def get_queryset(self) -> QuerySet[Book]:
        """Return books owned by the current user with optimised queries."""
        qs = Book.objects.filter(owner=self.request.user).select_related("owner")
        # Sorting
        sort_by = self.request.query_params.get("sort_by", "-updated_at")
        allowed_sorts = {
            "title": "title",
            "-title": "-title",
            "author": "author",
            "-author": "-author",
            "created_at": "created_at",
            "-created_at": "-created_at",
            "updated_at": "updated_at",
            "-updated_at": "-updated_at",
            "reading_progress": "current_page",  # approximate sort by pages read
            "-reading_progress": "-current_page",
        }
        if sort_by in allowed_sorts:
            qs = qs.order_by(allowed_sorts[sort_by])
        # Filtering
        status_filter = self.request.query_params.get("reading_status", None)
        if status_filter in ReadingStatus.values:
            qs = qs.filter(reading_status=status_filter)
        search = self.request.query_params.get("search", "").strip()
        if search:
            qs = qs.filter(
                models.Q(title__icontains=search) | models.Q(author__icontains=search)
            )
        return qs
    def perform_create(self, serializer: BookDetailSerializer) -> None:
        """Set the owner to the current user on creation."""
        serializer.save(owner=self.request.user)
    @action(detail=True, methods=["post"])
    def mark_finished(self, request: Request, pk: int | None = None) -> Response:
        """Mark a book as finished (100% progress)."""
        book: Book = self.get_object()
        book.mark_as_finished()
        serializer = self.get_serializer(book)
        return Response(serializer.data, status=status.HTTP_200_OK)
    @action(detail=False, methods=["get"])
    def stats(self, request: Request) -> Response:
        """Return aggregate stats about the user's library."""
        qs = self.get_queryset()
        total = qs.count()
        finished = qs.filter(reading_status=ReadingStatus.FINISHED).count()
        reading = qs.filter(reading_status=ReadingStatus.READING).count()
        not_started = qs.filter(reading_status=ReadingStatus.NOT_STARTED).count()
        return Response({
            "total_books": total,
            "finished": finished,
            "reading": reading,
            "not_started": not_started,
        })
@@ -0,0 +1,16 @@
 """
 ASGI config for config project.
 It exposes the ASGI callable as a module-level variable named ``application``.
 For more information on this file, see
 https://docs.djangoproject.com/en/6.0/howto/deployment/asgi/
 """
 import os
 from django.core.asgi import get_asgi_application
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
 application = get_asgi_application()
@@ -0,0 +1,99 @@
 """
 Django settings for config project.
 Generated by 'django-admin startproject' using Django 6.0.5.
 """
 from pathlib import Path
 from config.settings_app import settings
 BASE_DIR = Path(__file__).resolve().parent.parent
 SECRET_KEY = settings.SECRET_KEY
 DEBUG = settings.DEBUG
 ALLOWED_HOSTS = settings.ALLOWED_HOSTS
 INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    # Third-party
    "rest_framework",
    "corsheaders",
    # Local apps
    "books",
 ]
 MIDDLEWARE = [
    "corsheaders.middleware.CorsMiddleware",
    "django.middleware.security.SecurityMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "django.contrib.auth.middleware.AuthenticationMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django.middleware.clickjacking.XFrameOptionsMiddleware",
 ]
 ROOT_URLCONF = "config.urls"
 TEMPLATES = [
    {
        "BACKEND": "django.template.backends.django.DjangoTemplates",
        "DIRS": [],
        "APP_DIRS": True,
        "OPTIONS": {
            "context_processors": [
                "django.template.context_processors.request",
                "django.contrib.auth.context_processors.auth",
                "django.contrib.messages.context_processors.messages",
            ],
        },
    },
 ]
 WSGI_APPLICATION = "config.wsgi.application"
 DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": BASE_DIR / "db.sqlite3",
    }
 }
 AUTH_PASSWORD_VALIDATORS = [
    {"NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator"},
    {"NAME": "django.contrib.auth.password_validation.MinimumLengthValidator"},
    {"NAME": "django.contrib.auth.password_validation.CommonPasswordValidator"},
    {"NAME": "django.contrib.auth.password_validation.NumericPasswordValidator"},
 ]
 LANGUAGE_CODE = "en-us"
 TIME_ZONE = "UTC"
 USE_I18N = True
 USE_TZ = True
 STATIC_URL = "static/"
 DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
 # CORS
 CORS_ALLOWED_ORIGINS = settings.CORS_ALLOWED_ORIGINS
 CORS_ALLOW_CREDENTIALS = settings.CORS_ALLOW_CREDENTIALS
 # REST Framework
 REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": [
        "rest_framework.authentication.SessionAuthentication",
        "rest_framework.authentication.BasicAuthentication",
    ],
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.IsAuthenticatedOrReadOnly",
    ],
    "DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.PageNumberPagination",
    "PAGE_SIZE": 20,
 }
@@ -0,0 +1,33 @@
 from __future__ import annotations
 from pathlib import Path
 from pydantic_settings import BaseSettings, SettingsConfigDict
 class Settings(BaseSettings):
    """Application settings loaded from environment variables."""
    DEBUG: bool = True
    SECRET_KEY: str = "django-insecure-change-me-in-production"
    DATABASE_URL: str = "sqlite:///db.sqlite3"
    ALLOWED_HOSTS: list[str] = ["*"]
    CORS_ALLOWED_ORIGINS: list[str] = [
        "http://localhost:3000",
        "http://localhost:5173",
        "http://127.0.0.1:3000",
        "http://127.0.0.1:5173",
    ]
    CORS_ALLOW_CREDENTIALS: bool = True
    BASE_DIR: Path = Path(__file__).resolve().parent.parent
    model_config = SettingsConfigDict(
        env_prefix="CR_",
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )
 settings = Settings()
@@ -0,0 +1,8 @@
 from django.contrib import admin
 from django.urls import include, path
 urlpatterns = [
    path("admin/", admin.site.urls),
    path("api-auth/", include("rest_framework.urls")),
    path("api/", include("books.urls")),
 ]
@@ -0,0 +1,16 @@
 """
 WSGI config for config project.
 It exposes the WSGI callable as a module-level variable named ``application``.
 For more information on this file, see
 https://docs.djangoproject.com/en/6.0/howto/deployment/wsgi/
 """
 import os
 from django.core.wsgi import get_wsgi_application
 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
 application = get_wsgi_application()
@@ -0,0 +1,22 @@
 #!/usr/bin/env python
 """Django's command-line utility for administrative tasks."""
 import os
 import sys
 def main():
    """Run administrative tasks."""
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
    try:
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        ) from exc
    execute_from_command_line(sys.argv)
 if __name__ == '__main__':
    main()
@@ -0,0 +1,3 @@
 [pytest]
 DJANGO_SETTINGS_MODULE = config.settings
 python_files = tests.py test_*.py *_tests.py
@@ -0,0 +1,6 @@
 django>=5.0,<7.0
 djangorestframework>=3.15.0
 django-cors-headers>=4.0.0
 pydantic>=2.0.0
 pydantic-settings>=2.0.0
 pytest-django>=4.5.0
@@ -0,0 +1,84 @@
 # Backend API Specification — Cloud Reader
 ## Overview
 The Cloud Reader backend provides a RESTful API for managing a user's personal book library. Built with Django 5 + Django REST Framework.
 ## Models
 ### Book
 | Field            | Type               | Constraints                     |
 |------------------|--------------------|---------------------------------|
 | `title`          | `CharField(500)`   | Required                         |
 | `author`         | `CharField(500)`   | Required                         |
 | `genre`          | `CharField(200)`   | Optional, blank allowed          |
 | `description`    | `TextField`        | Optional, blank allowed          |
 | `cover_image_url`| `URLField`         | Optional, blank allowed          |
 | `isbn`           | `CharField(20)`    | Optional, blank allowed          |
 | `total_pages`    | `PositiveIntegerField` | Default 0                   |
 | `current_page`   | `PositiveIntegerField` | Default 0, validated ≤ total |
 | `reading_status` | `CharField(20)`    | Choices: `not_started`, `reading`, `finished`, `dnf` |
 | `owner`          | `ForeignKey(User)` | Set automatically on create      |
 | `created_at`     | `DateTimeField`    | Auto-set on create               |
 | `updated_at`     | `DateTimeField`    | Auto-set on update               |
 **Properties:**
 - `reading_progress` — computed `(current_page / total_pages) * 100`, returns `0.0` when `total_pages` is 0.
 **Indexes:** Composite indexes on `(owner, reading_status)`, `(owner, title)`, `(owner, author)`.
 ## API Endpoints
 Base URL: `/api/`
 Authentication: SessionAuthentication + BasicAuthentication (DRF defaults).
 Permissions: All book endpoints require `IsAuthenticated`. Users can only access their own books.
 ### Books
 | Method   | URL                                | Action        | Serializer         |
 |----------|------------------------------------|---------------|--------------------|
 | `GET`    | `/api/books/`                      | List books    | `BookListSerializer` |
 | `POST`   | `/api/books/`                      | Create book   | `BookDetailSerializer` |
 | `GET`    | `/api/books/{id}/`                 | Retrieve book | `BookDetailSerializer` |
 | `PUT`    | `/api/books/{id}/`                 | Full update   | `BookDetailSerializer` |
 | `PATCH`  | `/api/books/{id}/`                 | Partial update| `BookDetailSerializer` |
 | `DELETE` | `/api/books/{id}/`                 | Delete book   | —                    |
 | `POST`   | `/api/books/{id}/mark_finished/`   | Mark finished | `BookDetailSerializer` |
 | `GET`    | `/api/books/stats/`                | Library stats | — (custom)           |
 ### Query Parameters (List)
 | Parameter        | Type     | Description                                      |
 |------------------|----------|--------------------------------------------------|
 | `page`           | int      | Page number for pagination (20 items/page)       |
 | `sort_by`        | string   | `title`, `-title`, `author`, `-author`, `-created_at`, `-updated_at`, `-reading_progress`, `reading_progress` |
 | `reading_status` | string   | Filter by status value                           |
 | `search`         | string   | Search in title and author fields (icontains)    |
 ### Stats Response
 ```json
 {
  "total_books": 10,
  "finished": 3,
  "reading": 4,
  "not_started": 3
 }
 ```
 ### Mark Finished
 `POST /api/books/{id}/mark_finished/` sets `reading_status` to `finished` and `current_page` to `total_pages`.
 ## Validation Rules
 - Title and author cannot be empty or whitespace-only
 - `current_page` cannot exceed `total_pages` (when `total_pages > 0`)
 - Setting `reading_status` to `finished` automatically sets `current_page = total_pages`
 ## Admin
 Books are registered in Django admin with list display, filters by `reading_status` and `genre`, and search by `title`/`author`.
@@ -0,0 +1,82 @@
 # Frontend Component Specification — Cloud Reader
 ## Overview
 React 19 + TypeScript SPA using Vite for development and production builds. State managed via React hooks and Context API. Routing via `react-router-dom` v7 with `lazy`/`Suspense` for code splitting.
 ## Components
 ### App (root)
 - **Path:** `/`
 - **Layout:** Header with logo + `<Routes>` wrapper
 - **Routing:** `/` → `Library`, `*` → redirect to `/`
 - **Code splitting:** `Library` loaded via `React.lazy` + `<Suspense>`
 ### Library
 - **State:** `books[]`, `stats`, `search`, `sortBy`, `statusFilter`, `currentPage`, `view`
 - **Views:** `library` (grid), `detail` (selected book), `add` (modal form)
 - **Sub-components:** `BookCard`, `BookDetail`, `BookForm`
 - **Data flow:** Calls `fetchBooks()` on mount and when filters/page change
 ### BookCard
 - **Props:** `{ book: Book, onClick: (book: Book) => void }`
 - **Display:** Cover image (or first-letter placeholder), title, author, genre badge, reading progress bar with status color
 - **Interaction:** Click/keyboard-accessible (Enter/Space)
 ### BookDetail
 - **Props:** `{ bookId: number, onBack: () => void, onUpdated: () => void }`
 - **Sections:** Cover, metadata (title, author, genre, ISBN), progress bar with page count, action buttons
 - **Actions:** Mark as Finished, Edit Details (switches to BookForm), Delete (with confirmation)
 - **States:** Loading, error, editing mode
 ### BookForm
 - **Props:** `{ initialData?: Book, onSubmit: (data: BookFormData) => Promise<void>, onCancel: () => void }`
 - **Fields:** Title*, Author*, Genre, Description, Cover URL, ISBN, Total Pages, Current Page, Status
 - **Client validation:** Title/author required, page ≤ total pages
 - **Loading state:** Submit button shows "Saving..." when `isLoading`
 ## Types
 ```typescript
 interface Book {
  id: number; title: string; author: string; genre: string;
  description: string; cover_image_url: string; isbn: string;
  total_pages: number; current_page: number;
  reading_status: ReadingStatus; reading_progress: number;
  owner: string; created_at: string; updated_at: string;
 }
 type ReadingStatus = 'not_started' | 'reading' | 'finished' | 'dnf';
 interface BookFormData {
  title: string; author: string; genre: string;
  description: string; cover_image_url: string; isbn: string;
  total_pages: number; current_page: number; reading_status: ReadingStatus;
 }
 ```
 ## API Client (`api/books.ts`)
 | Function             | HTTP Call                          |
 |----------------------|------------------------------------|
 | `fetchBooks(params)` | `GET /api/books/`                  |
 | `fetchBook(id)`      | `GET /api/books/{id}/`             |
 | `createBook(data)`   | `POST /api/books/`                 |
 | `updateBook(id, data)` | `PATCH /api/books/{id}/`        |
 | `deleteBook(id)`     | `DELETE /api/books/{id}/`          |
 | `markAsFinished(id)` | `POST /api/books/{id}/mark_finished/` |
 | `fetchBookStats()`   | `GET /api/books/stats/`            |
 ## Styling
 Dark theme with CSS custom properties. All styles in `App.css`. Responsive grid layout with breakpoint at 768px.
 ## Build & Dev
 - `yarn workspace frontend dev` — Vite dev server on port 5173 with API proxy to 127.0.0.1:8000
 - `yarn workspace frontend build` — TypeScript check + Vite production build
@@ -0,0 +1,24 @@
 # Logs
 logs
 *.log
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 pnpm-debug.log*
 lerna-debug.log*
 node_modules
 dist
 dist-ssr
 *.local
 # Editor directories and files
 .vscode/*
 !.vscode/extensions.json
 .idea
 .DS_Store
 *.suo
 *.ntvs*
 *.njsproj
 *.sln
 *.sw?
@@ -0,0 +1,73 @@
 # React + TypeScript + Vite
 This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
 Currently, two official plugins are available:
 - [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Oxc](https://oxc.rs)
 - [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
 ## React Compiler
 The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
 ## Expanding the ESLint configuration
 If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
 ```js
 export default defineConfig([
  globalIgnores(['dist']),
  {
    files: ['**/*.{ts,tsx}'],
    extends: [
      // Other configs...
      // Remove tseslint.configs.recommended and replace with this
      tseslint.configs.recommendedTypeChecked,
      // Alternatively, use this for stricter rules
      tseslint.configs.strictTypeChecked,
      // Optionally, add this for stylistic rules
      tseslint.configs.stylisticTypeChecked,
      // Other configs...
    ],
    languageOptions: {
      parserOptions: {
        project: ['./tsconfig.node.json', './tsconfig.app.json'],
        tsconfigRootDir: import.meta.dirname,
      },
      // other options...
    },
  },
 ])
 ```
 You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
 ```js
 // eslint.config.js
 import reactX from 'eslint-plugin-react-x'
 import reactDom from 'eslint-plugin-react-dom'
 export default defineConfig([
  globalIgnores(['dist']),
  {
    files: ['**/*.{ts,tsx}'],
    extends: [
      // Other configs...
      // Enable lint rules for React
      reactX.configs['recommended-typescript'],
      // Enable lint rules for React DOM
      reactDom.configs.recommended,
    ],
    languageOptions: {
      parserOptions: {
        project: ['./tsconfig.node.json', './tsconfig.app.json'],
        tsconfigRootDir: import.meta.dirname,
      },
      // other options...
    },
  },
 ])
 ```
@@ -0,0 +1,22 @@
 import js from '@eslint/js'
 import globals from 'globals'
 import reactHooks from 'eslint-plugin-react-hooks'
 import reactRefresh from 'eslint-plugin-react-refresh'
 import tseslint from 'typescript-eslint'
 import { defineConfig, globalIgnores } from 'eslint/config'
 export default defineConfig([
  globalIgnores(['dist']),
  {
    files: ['**/*.{ts,tsx}'],
    extends: [
      js.configs.recommended,
      tseslint.configs.recommended,
      reactHooks.configs.flat.recommended,
      reactRefresh.configs.vite,
    ],
    languageOptions: {
      globals: globals.browser,
    },
  },
 ])
@@ -0,0 +1,13 @@
 <!doctype html>
 <html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>frontend</title>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx"></script>
  </body>
 </html>
@@ -0,0 +1,32 @@
 {
  "name": "frontend",
  "private": true,
  "version": "0.0.0",
  "type": "module",
  "scripts": {
    "dev": "vite",
    "build": "tsc -b && vite build",
    "lint": "eslint .",
    "preview": "vite preview"
  },
  "dependencies": {
    "axios": "^1.16.1",
    "react": "^19.2.6",
    "react-dom": "^19.2.6",
    "react-router-dom": "^7.15.1"
  },
  "devDependencies": {
    "@eslint/js": "^10.0.1",
    "@types/node": "^24.12.3",
    "@types/react": "^19.2.14",
    "@types/react-dom": "^19.2.3",
    "@vitejs/plugin-react": "^6.0.1",
    "eslint": "^10.3.0",
    "eslint-plugin-react-hooks": "^7.1.1",
    "eslint-plugin-react-refresh": "^0.5.2",
    "globals": "^17.6.0",
    "typescript": "~6.0.2",
    "typescript-eslint": "^8.59.2",
    "vite": "^8.0.12"
  }
 }
@@ -0,0 +1,24 @@
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    <path fill="#08060d" fill-rule="evenodd" d="M1.893 1.98c.052.072 1.245 1.769 2.653 3.77l2.892 4.114c.183.261.333.48.333.486s-.068.089-.152.183l-.522.593-.765.867-3.597 4.087c-.375.426-.734.834-.798.905a1 1 0 0 0-.118.148c0 .01.236.017.664.017h.663l.729-.83c.4-.457.796-.906.879-.999a692 692 0 0 0 1.794-2.038c.034-.037.301-.34.594-.675l.551-.624.345-.392a7 7 0 0 1 .34-.374c.006 0 .93 1.306 2.052 2.903l2.084 2.965.045.063h2.275c1.87 0 2.273-.003 2.266-.021-.008-.02-1.098-1.572-3.894-5.547-2.013-2.862-2.28-3.246-2.273-3.266.008-.019.282-.332 2.085-2.38l2-2.274 1.567-1.782c.022-.028-.016-.03-.65-.03h-.674l-.3.342a871 871 0 0 1-1.782 2.025c-.067.075-.405.458-.75.852a100 100 0 0 1-.803.91c-.148.172-.299.344-.99 1.127-.304.343-.32.358-.345.327-.015-.019-.904-1.282-1.976-2.808L6.365 1.85H1.8zm1.782.91 8.078 11.294c.772 1.08 1.413 1.973 1.425 1.984.016.017.241.02 1.05.017l1.03-.004-2.694-3.766L7.796 5.75 5.722 2.852l-1.039-.004-1.039-.004z" clip-rule="evenodd"/>
  </symbol>
 </svg>
@@ -0,0 +1,577 @@
 /* === Reset & Base === */
 *,
 *::before,
 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
 }
 :root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-surface-hover: #242736;
  --color-border: #2a2d3a;
  --color-text: #e1e3ea;
  --color-text-muted: #8b8fa3;
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-success: #22c55e;
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-secondary: #374151;
  --color-secondary-hover: #4b5563;
  --radius: 8px;
  --radius-lg: 12px;
 }
 body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
 }
 /* === App Layout === */
 .app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
 }
 .app-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
 }
 .app-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
 }
 .app-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.125rem;
 }
 .logo-icon {
  font-size: 1.5rem;
 }
 .app-main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
 }
 /* === Library === */
 .library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
 }
 .library-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
 }
 /* === Stats === */
 .library-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
 }
 .stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
 }
 .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
 }
 .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
 }
 /* === Controls === */
 .library-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
 }
 .search-input {
  flex: 1;
  min-width: 200px;
  padding: 10px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.9rem;
 }
 .search-input:focus {
  outline: none;
  border-color: var(--color-primary);
 }
 .sort-select,
 .filter-select {
  padding: 10px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.9rem;
  cursor: pointer;
 }
 /* === Books Grid === */
 .books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
 }
 .book-card {
  display: flex;
  gap: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, transform 0.15s;
 }
 .book-card:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-primary);
  transform: translateY(-2px);
 }
 .book-card-cover {
  flex-shrink: 0;
  width: 80px;
  height: 120px;
  border-radius: 6px;
  overflow: hidden;
 }
 .book-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
 }
 .book-card-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
 }
 .book-card-placeholder.large {
  width: 180px;
  height: 260px;
  font-size: 3rem;
 }
 .book-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
 }
 .book-card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
 }
 .book-card-author {
  font-size: 0.85rem;
  color: var(--color-text-muted);
 }
 .book-card-genre {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary);
  border-radius: 12px;
  align-self: flex-start;
 }
 .book-card-progress {
  margin-top: auto;
 }
 /* === Progress Bar === */
 .progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
 }
 .progress-bar.large {
  height: 10px;
  border-radius: 5px;
 }
 .progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
 }
 .progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
 }
 /* === Buttons === */
 .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s;
 }
 .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
 }
 .btn-primary {
  background: var(--color-primary);
  color: white;
 }
 .btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
 }
 .btn-secondary {
  background: var(--color-secondary);
  color: var(--color-text);
 }
 .btn-secondary:hover:not(:disabled) {
  background: var(--color-secondary-hover);
 }
 .btn-success {
  background: var(--color-success);
  color: white;
 }
 .btn-success:hover:not(:disabled) {
  background: #16a34a;
 }
 .btn-danger {
  background: var(--color-danger);
  color: white;
 }
 .btn-danger:hover:not(:disabled) {
  background: var(--color-danger-hover);
 }
 /* === Book Detail === */
 .book-detail {
  max-width: 800px;
 }
 .book-detail > .btn {
  margin-bottom: 24px;
 }
 .book-detail-header {
  display: flex;
  gap: 32px;
  margin-bottom: 32px;
 }
 .book-detail-cover {
  flex-shrink: 0;
  width: 180px;
  height: 260px;
  border-radius: var(--radius-lg);
  overflow: hidden;
 }
 .book-detail-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
 }
 .book-detail-meta {
  flex: 1;
 }
 .book-detail-meta h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 4px;
 }
 .book-detail-author {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
 }
 .book-detail-isbn {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 8px;
 }
 .book-detail-progress {
  margin: 20px 0;
 }
 .book-detail-progress .progress-text {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
 }
 .book-detail-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
 }
 .book-detail-description {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
 }
 .book-detail-description h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
 }
 .book-detail-description p {
  color: var(--color-text-muted);
  line-height: 1.7;
 }
 /* === Form === */
 .book-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
 }
 .form-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.875rem;
 }
 .form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
 }
 .form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
 }
 .form-group input,
 .form-group textarea,
 .form-group select {
  padding: 10px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.9rem;
  font-family: inherit;
 }
 .form-group input:focus,
 .form-group textarea:focus,
 .form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
 }
 .form-group textarea {
  resize: vertical;
  min-height: 80px;
 }
 .form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
 }
 .form-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
 }
 /* === Modal === */
 .modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  z-index: 200;
 }
 .modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  overflow-y: auto;
 }
 .modal-content h2 {
  margin-bottom: 20px;
 }
 /* === Pagination === */
 .pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
 }
 .page-info {
  font-size: 0.875rem;
  color: var(--color-text-muted);
 }
 /* === States === */
 .loading-spinner {
  text-align: center;
  padding: 48px;
  color: var(--color-text-muted);
  font-size: 1rem;
 }
 .empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--color-text-muted);
 }
 .empty-state p {
  margin-bottom: 8px;
 }
 .error-message {
  text-align: center;
  padding: 32px;
  color: var(--color-danger);
 }
 /* === Responsive === */
@media (max-width: 768px) {
  .books-grid {
    grid-template-columns: 1fr;
  }
  .book-detail-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .book-detail-actions {
    justify-content: center;
  }
  .library-controls {
    flex-direction: column;
  }
  .library-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-row {
    grid-template-columns: 1fr;
  }
 }
@@ -0,0 +1,32 @@
 import { lazy, Suspense } from 'react';
 import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom';
 import './App.css';
 const Library = lazy(() => import('./components/Library').then((m) => ({ default: m.Library })));
 function App() {
  return (
    <BrowserRouter>
      <div className="app">
        <header className="app-header">
          <div className="app-header-inner">
            <a href="/" className="app-logo" onClick={(e) => { e.preventDefault(); window.location.href = '/'; }}>
              <span className="logo-icon">📚</span>
              <span className="logo-text">Cloud Reader</span>
            </a>
          </div>
        </header>
        <main className="app-main">
          <Suspense fallback={<div className="loading-spinner">Loading...</div>}>
            <Routes>
              <Route path="/" element={<Library />} />
              <Route path="*" element={<Navigate to="/" replace />} />
            </Routes>
          </Suspense>
        </main>
      </div>
    </BrowserRouter>
  );
 }
 export default App;
@@ -0,0 +1,90 @@
 import axios from 'axios';
 import type { Book, BookFormData, BookListResponse, BookStats } from '../types';
 const api = axios.create({
  baseURL: '/api',
  headers: {
    'Content-Type': 'application/json',
  },
  withCredentials: true,
 });
 api.interceptors.response.use(
  (response) => response,
  (error) => {
    if (error.response?.status === 403) {
      window.location.href = '/login';
    }
    return Promise.reject(error);
  },
 );
 export async function fetchBooks(params?: {
  page?: number;
  sort_by?: string;
  reading_status?: string;
  search?: string;
 }): Promise<BookListResponse> {
  const response = await api.get<BookListResponse>('/books/', { params });
  return response.data;
 }
 export async function fetchBook(id: number): Promise<Book> {
  const response = await api.get<Book>(`/books/${id}/`);
  return response.data;
 }
 export async function createBook(data: BookFormData): Promise<Book> {
  const response = await api.post<Book>('/books/', data);
  return response.data;
 }
 export async function updateBook(id: number, data: Partial<BookFormData>): Promise<Book> {
  const response = await api.patch<Book>(`/books/${id}/`, data);
  return response.data;
 }
 export async function deleteBook(id: number): Promise<void> {
  await api.delete(`/books/${id}/`);
 }
 export async function markBookAsFinished(id: number): Promise<Book> {
  const response = await api.post<Book>(`/books/${id}/mark_finished/`);
  return response.data;
 }
 export async function fetchBookStats(): Promise<BookStats> {
  const response = await api.get<BookStats>('/books/stats/');
  return response.data;
 }
 export async function login(username: string, password: string): Promise<void> {
  // Get CSRF token from any existing session
  const csrfToken = extractCsrfToken();
  if (!csrfToken) {
    // Make a light request to set the CSRF cookie
    await fetch('/api/books/', { credentials: 'include' });
  }
  const token = extractCsrfToken();
  const resp = await fetch('/api-auth/login/', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/x-www-form-urlencoded',
      'X-CSRFToken': token,
    },
    body: new URLSearchParams({ username, password }),
    credentials: 'include',
  });
  if (!resp.ok) {
    throw new Error('Login failed');
  }
 }
 function extractCsrfToken(): string {
  const match = document.cookie.match(/csrftoken=([\w-]+)/);
  return match ? match[1] : '';
 }
 export default api;
@@ -0,0 +1 @@
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@@ -0,0 +1,54 @@
 import type { Book } from '../types';
 import { READING_STATUS_LABELS, READING_STATUS_COLORS } from '../types';
 interface BookCardProps {
  book: Book;
  onClick: (book: Book) => void;
 }
 export function BookCard({ book, onClick }: BookCardProps) {
  const progress = book.reading_progress;
  const statusColor = READING_STATUS_COLORS[book.reading_status];
  return (
    <article
      className="book-card"
      onClick={() => onClick(book)}
      role="button"
      tabIndex={0}
      onKeyDown={(e: React.KeyboardEvent) => {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          onClick(book);
        }
      }}
    >
      <div className="book-card-cover">
        {book.cover_image_url ? (
          <img src={book.cover_image_url} alt={`Cover of ${book.title}`} loading="lazy" />
        ) : (
          <div className="book-card-placeholder">
            <span>{book.title.charAt(0)}</span>
          </div>
        )}
      </div>
      <div className="book-card-info">
        <h3 className="book-card-title">{book.title}</h3>
        <p className="book-card-author">{book.author}</p>
        {book.genre && <span className="book-card-genre">{book.genre}</span>}
        <div className="book-card-progress">
          <div className="progress-bar">
            <div
              className="progress-fill"
              style={{ width: `${Math.min(progress, 100)}%`, backgroundColor: statusColor }}
            />
          </div>
          <div className="progress-text">
            <span style={{ color: statusColor }}>{READING_STATUS_LABELS[book.reading_status]}</span>
            <span>{progress}%</span>
          </div>
        </div>
      </div>
    </article>
  );
 }
@@ -0,0 +1,151 @@
 import { useState, useEffect, useCallback } from 'react';
 import type { Book, BookFormData } from '../types';
 import { READING_STATUS_LABELS, READING_STATUS_COLORS } from '../types';
 import { fetchBook, updateBook, markBookAsFinished, deleteBook } from '../api/books';
 import { BookForm } from './BookForm';
 interface BookDetailProps {
  bookId: number;
  onBack: () => void;
  onUpdated: () => void;
 }
 export function BookDetail({ bookId, onBack, onUpdated }: BookDetailProps) {
  const [book, setBook] = useState<Book | null>(null);
  const [loading, setLoading] = useState(true);
  const [editing, setEditing] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const loadBook = useCallback(async () => {
    setLoading(true);
    setError(null);
    try {
      const data = await fetchBook(bookId);
      setBook(data);
    } catch {
      setError('Failed to load book details.');
    } finally {
      setLoading(false);
    }
  }, [bookId]);
  useEffect(() => {
    loadBook();
  }, [loadBook]);
  const handleUpdate = useCallback(
    async (formData: BookFormData) => {
      const updated = await updateBook(bookId, formData);
      setBook(updated);
      setEditing(false);
      onUpdated();
    },
    [bookId, onUpdated],
  );
  const handleMarkFinished = useCallback(async () => {
    const updated = await markBookAsFinished(bookId);
    setBook(updated);
    onUpdated();
  }, [bookId, onUpdated]);
  const handleDelete = useCallback(async () => {
    if (!window.confirm('Are you sure you want to delete this book?')) return;
    await deleteBook(bookId);
    onBack();
    onUpdated();
  }, [bookId, onBack, onUpdated]);
  if (loading) {
    return <div className="loading-spinner">Loading...</div>;
  }
  if (error || !book) {
    return <div className="error-message">{error ?? 'Book not found.'}</div>;
  }
  if (editing) {
    return (
      <div className="book-detail">
        <button className="btn btn-secondary" onClick={() => setEditing(false)}>
          ← Back to Details
        </button>
        <h2>Edit Book</h2>
        <BookForm
          initialData={book}
          onSubmit={handleUpdate}
          onCancel={() => setEditing(false)}
        />
      </div>
    );
  }
  const statusColor = READING_STATUS_COLORS[book.reading_status];
  return (
    <div className="book-detail">
      <button className="btn btn-secondary" onClick={onBack}>
        ← Back to Library
      </button>
      <div className="book-detail-header">
        <div className="book-detail-cover">
          {book.cover_image_url ? (
            <img src={book.cover_image_url} alt={`Cover of ${book.title}`} />
          ) : (
            <div className="book-card-placeholder large">
              <span>{book.title.charAt(0)}</span>
            </div>
          )}
        </div>
        <div className="book-detail-meta">
          <h1>{book.title}</h1>
          <p className="book-detail-author">by {book.author}</p>
          {book.genre && <span className="book-card-genre">{book.genre}</span>}
          {book.isbn && <p className="book-detail-isbn">ISBN: {book.isbn}</p>}
          <div className="book-detail-progress">
            <div className="progress-bar large">
              <div
                className="progress-fill"
                style={{ width: `${Math.min(book.reading_progress, 100)}%`, backgroundColor: statusColor }}
              />
            </div>
            <div className="progress-text">
              <span style={{ color: statusColor }}>
                {READING_STATUS_LABELS[book.reading_status]}
              </span>
              <span>{book.reading_progress}% complete</span>
              {book.total_pages > 0 && (
                <span>
                  Page {book.current_page} of {book.total_pages}
                </span>
              )}
            </div>
          </div>
          <div className="book-detail-actions">
            {book.reading_status !== 'finished' && (
              <button className="btn btn-success" onClick={handleMarkFinished}>
                Mark as Finished
              </button>
            )}
            <button className="btn btn-primary" onClick={() => setEditing(true)}>
              Edit Details
            </button>
            <button className="btn btn-danger" onClick={handleDelete}>
              Delete
            </button>
          </div>
        </div>
      </div>
      {book.description && (
        <div className="book-detail-description">
          <h3>Description</h3>
          <p>{book.description}</p>
        </div>
      )}
    </div>
  );
 }
@@ -0,0 +1,209 @@
 import { useState, useCallback, useEffect, useRef } from 'react';
 import type { Book, BookFormData, ReadingStatus } from '../types';
 import { READING_STATUS_LABELS } from '../types';
 interface BookFormProps {
  initialData?: Book;
  onSubmit: (data: BookFormData) => Promise<void>;
  onCancel: () => void;
  isLoading?: boolean;
 }
 export function BookForm({ initialData, onSubmit, onCancel, isLoading }: BookFormProps) {
  const [formData, setFormData] = useState<BookFormData>({
    title: initialData?.title ?? '',
    author: initialData?.author ?? '',
    genre: initialData?.genre ?? '',
    description: initialData?.description ?? '',
    cover_image_url: initialData?.cover_image_url ?? '',
    isbn: initialData?.isbn ?? '',
    total_pages: initialData?.total_pages ?? 0,
    current_page: initialData?.current_page ?? 0,
    reading_status: initialData?.reading_status ?? 'not_started',
  });
  const [error, setError] = useState<string | null>(null);
  const titleRef = useRef<HTMLInputElement>(null);
  useEffect(() => {
    titleRef.current?.focus();
  }, []);
  const handleChange = useCallback(
    (e: React.ChangeEvent<HTMLInputElement | HTMLTextAreaElement | HTMLSelectElement>) => {
      const { name, value } = e.target;
      setFormData((prev) => ({
        ...prev,
        [name]:
          name === 'total_pages' || name === 'current_page'
            ? Math.max(0, parseInt(value, 10) || 0)
            : value,
      }));
    },
    [],
  );
  const handleSubmit = useCallback(
    async (e: React.FormEvent) => {
      e.preventDefault();
      setError(null);
      if (!formData.title.trim()) {
        setError('Title is required.');
        return;
      }
      if (!formData.author.trim()) {
        setError('Author is required.');
        return;
      }
      if (formData.current_page > formData.total_pages && formData.total_pages > 0) {
        setError('Current page cannot exceed total pages.');
        return;
      }
      try {
        await onSubmit(formData);
      } catch (err) {
        if (err instanceof Error) {
          setError(err.message);
        } else {
          setError('Failed to save book.');
        }
      }
    },
    [formData, onSubmit],
  );
  return (
    <form onSubmit={handleSubmit} className="book-form">
      {error && <div className="form-error">{error}</div>}
      <div className="form-group">
        <label htmlFor="title">Title *</label>
        <input
          ref={titleRef}
          id="title"
          name="title"
          type="text"
          value={formData.title}
          onChange={handleChange}
          placeholder="Book title"
          required
        />
      </div>
      <div className="form-group">
        <label htmlFor="author">Author *</label>
        <input
          id="author"
          name="author"
          type="text"
          value={formData.author}
          onChange={handleChange}
          placeholder="Author name"
          required
        />
      </div>
      <div className="form-row">
        <div className="form-group">
          <label htmlFor="genre">Genre</label>
          <input
            id="genre"
            name="genre"
            type="text"
            value={formData.genre}
            onChange={handleChange}
            placeholder="e.g. Fiction, Science"
          />
        </div>
        <div className="form-group">
          <label htmlFor="isbn">ISBN</label>
          <input
            id="isbn"
            name="isbn"
            type="text"
            value={formData.isbn}
            onChange={handleChange}
            placeholder="ISBN number"
          />
        </div>
      </div>
      <div className="form-group">
        <label htmlFor="description">Description</label>
        <textarea
          id="description"
          name="description"
          value={formData.description}
          onChange={handleChange}
          placeholder="Book description"
          rows={3}
        />
      </div>
      <div className="form-group">
        <label htmlFor="cover_image_url">Cover Image URL</label>
        <input
          id="cover_image_url"
          name="cover_image_url"
          type="url"
          value={formData.cover_image_url}
          onChange={handleChange}
          placeholder="https://example.com/cover.jpg"
        />
      </div>
      <div className="form-row">
        <div className="form-group">
          <label htmlFor="total_pages">Total Pages</label>
          <input
            id="total_pages"
            name="total_pages"
            type="number"
            min={0}
            value={formData.total_pages}
            onChange={handleChange}
          />
        </div>
        <div className="form-group">
          <label htmlFor="current_page">Current Page</label>
          <input
            id="current_page"
            name="current_page"
            type="number"
            min={0}
            value={formData.current_page}
            onChange={handleChange}
          />
        </div>
        <div className="form-group">
          <label htmlFor="reading_status">Status</label>
          <select
            id="reading_status"
            name="reading_status"
            value={formData.reading_status}
            onChange={handleChange}
          >
            {(Object.keys(READING_STATUS_LABELS) as ReadingStatus[]).map((status) => (
              <option key={status} value={status}>
                {READING_STATUS_LABELS[status]}
              </option>
            ))}
          </select>
        </div>
      </div>
      <div className="form-actions">
        <button type="submit" className="btn btn-primary" disabled={isLoading}>
          {isLoading ? 'Saving...' : initialData ? 'Update Book' : 'Add Book'}
        </button>
        <button type="button" className="btn btn-secondary" onClick={onCancel}>
          Cancel
        </button>
      </div>
    </form>
  );
 }
@@ -0,0 +1,227 @@
 import { useState, useEffect, useCallback, useMemo } from 'react';
 import type { Book, ReadingStatus } from '../types';
 import { READING_STATUS_LABELS } from '../types';
 import { fetchBooks, fetchBookStats, createBook } from '../api/books';
 import type { BookStats, BookFormData } from '../types';
 import { BookCard } from './BookCard';
 import { BookDetail } from './BookDetail';
 import { BookForm } from './BookForm';
 type View = 'library' | 'detail' | 'add';
 export function Library() {
  const [view, setView] = useState<View>('library');
  const [selectedBookId, setSelectedBookId] = useState<number | null>(null);
  const [books, setBooks] = useState<Book[]>([]);
  const [stats, setStats] = useState<BookStats | null>(null);
  const [loading, setLoading] = useState(true);
  const [search, setSearch] = useState('');
  const [sortBy, setSortBy] = useState('-updated_at');
  const [statusFilter, setStatusFilter] = useState<string>('');
  const [currentPage, setCurrentPage] = useState(1);
  const [totalCount, setTotalCount] = useState(0);
  const [showForm, setShowForm] = useState(false);
  const loadBooks = useCallback(async () => {
    setLoading(true);
    try {
      const data = await fetchBooks({
        page: currentPage,
        sort_by: sortBy || undefined,
        reading_status: statusFilter || undefined,
        search: search || undefined,
      });
      setBooks(data.results);
      setTotalCount(data.count);
    } catch {
      setBooks([]);
    } finally {
      setLoading(false);
    }
  }, [currentPage, sortBy, statusFilter, search]);
  const loadStats = useCallback(async () => {
    try {
      const data = await fetchBookStats();
      setStats(data);
    } catch {
      // Stats are non-critical
    }
  }, []);
  useEffect(() => {
    loadBooks();
    loadStats();
  }, [loadBooks, loadStats]);
  const handleBookClick = useCallback((book: Book) => {
    setSelectedBookId(book.id);
    setView('detail');
  }, []);
  const handleBackToLibrary = useCallback(() => {
    setView('library');
    setSelectedBookId(null);
  }, []);
  const handleUpdated = useCallback(() => {
    loadBooks();
    loadStats();
  }, [loadBooks, loadStats]);
  const handleAddBook = useCallback(
    async (data: BookFormData) => {
      await createBook(data);
      setShowForm(false);
      await loadBooks();
      await loadStats();
    },
    [loadBooks, loadStats],
  );
  const totalPages = useMemo(() => Math.max(1, Math.ceil(totalCount / 20)), [totalCount]);
  if (view === 'detail' && selectedBookId) {
    return (
      <BookDetail
        bookId={selectedBookId}
        onBack={handleBackToLibrary}
        onUpdated={handleUpdated}
      />
    );
  }
  return (
    <div className="library">
      <div className="library-header">
        <h1>My Library</h1>
        <button className="btn btn-primary" onClick={() => setShowForm(true)}>
          + Add Book
        </button>
      </div>
      {stats && (
        <div className="library-stats">
          <div className="stat-card">
            <span className="stat-value">{stats.total_books}</span>
            <span className="stat-label">Total</span>
          </div>
          <div className="stat-card">
            <span className="stat-value" style={{ color: '#22c55e' }}>{stats.finished}</span>
            <span className="stat-label">Finished</span>
          </div>
          <div className="stat-card">
            <span className="stat-value" style={{ color: '#3b82f6' }}>{stats.reading}</span>
            <span className="stat-label">Reading</span>
          </div>
          <div className="stat-card">
            <span className="stat-value" style={{ color: '#6b7280' }}>{stats.not_started}</span>
            <span className="stat-label">Unread</span>
          </div>
        </div>
      )}
      {showForm && (
        <div className="modal-overlay">
          <div className="modal-content">
            <h2>Add New Book</h2>
            <BookForm
              onSubmit={handleAddBook}
              onCancel={() => setShowForm(false)}
            />
          </div>
        </div>
      )}
      <div className="library-controls">
        <input
          type="search"
          className="search-input"
          placeholder="Search by title or author..."
          value={search}
          onChange={(e: React.ChangeEvent<HTMLInputElement>) => {
            setSearch(e.target.value);
            setCurrentPage(1);
          }}
        />
        <select
          value={sortBy}
          onChange={(e: React.ChangeEvent<HTMLSelectElement>) => {
            setSortBy(e.target.value);
            setCurrentPage(1);
          }}
          className="sort-select"
        >
          <option value="-updated_at">Recently Updated</option>
          <option value="title">Title (A-Z)</option>
          <option value="-title">Title (Z-A)</option>
          <option value="author">Author (A-Z)</option>
          <option value="-author">Author (Z-A)</option>
          <option value="-created_at">Recently Added</option>
          <option value="-reading_progress">Most Progress</option>
          <option value="reading_progress">Least Progress</option>
        </select>
        <select
          value={statusFilter}
          onChange={(e: React.ChangeEvent<HTMLSelectElement>) => {
            setStatusFilter(e.target.value);
            setCurrentPage(1);
          }}
          className="filter-select"
        >
          <option value="">All Status</option>
          {(Object.keys(READING_STATUS_LABELS) as ReadingStatus[]).map((status) => (
            <option key={status} value={status}>
              {READING_STATUS_LABELS[status]}
            </option>
          ))}
        </select>
      </div>
      {loading ? (
        <div className="loading-spinner">Loading books...</div>
      ) : books.length === 0 ? (
        <div className="empty-state">
          <p>No books found.</p>
          {search || statusFilter ? (
            <p>Try adjusting your search or filters.</p>
          ) : (
            <p>Add your first book to get started!</p>
          )}
        </div>
      ) : (
        <>
          <div className="books-grid">
            {books.map((book) => (
              <BookCard key={book.id} book={book} onClick={handleBookClick} />
            ))}
          </div>
          {totalPages > 1 && (
            <div className="pagination">
              <button
                className="btn btn-secondary"
                disabled={currentPage <= 1}
                onClick={() => setCurrentPage((p) => Math.max(1, p - 1))}
              >
                ← Previous
              </button>
              <span className="page-info">
                Page {currentPage} of {totalPages}
              </span>
              <button
                className="btn btn-secondary"
                disabled={currentPage >= totalPages}
                onClick={() => setCurrentPage((p) => p + 1)}
              >
                Next →
              </button>
            </div>
          )}
        </>
      )}
    </div>
  );
 }
@@ -0,0 +1,16 @@
 /* Base reset — main styles in App.css */
 *,
 *::before,
 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
 }
 body {
  margin: 0;
 }
 #root {
  min-height: 100vh;
 }
@@ -0,0 +1,10 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import './index.css'
 import App from './App.tsx'
 createRoot(document.getElementById('root')!).render(
  <StrictMode>
    <App />
  </StrictMode>,
 )
@@ -0,0 +1,58 @@
 export interface Book {
  id: number;
  title: string;
  author: string;
  genre: string;
  description: string;
  cover_image_url: string;
  isbn: string;
  total_pages: number;
  current_page: number;
  reading_status: ReadingStatus;
  reading_progress: number;
  owner: string;
  created_at: string;
  updated_at: string;
 }
 export type ReadingStatus = 'not_started' | 'reading' | 'finished' | 'dnf';
 export interface BookListResponse {
  count: number;
  next: string | null;
  previous: string | null;
  results: Book[];
 }
 export interface BookStats {
  total_books: number;
  finished: number;
  reading: number;
  not_started: number;
 }
 export interface BookFormData {
  title: string;
  author: string;
  genre: string;
  description: string;
  cover_image_url: string;
  isbn: string;
  total_pages: number;
  current_page: number;
  reading_status: ReadingStatus;
 }
 export const READING_STATUS_LABELS: Record<ReadingStatus, string> = {
  not_started: 'Not Started',
  reading: 'Reading',
  finished: 'Finished',
  dnf: 'Did Not Finish',
 };
 export const READING_STATUS_COLORS: Record<ReadingStatus, string> = {
  not_started: '#6b7280',
  reading: '#3b82f6',
  finished: '#22c55e',
  dnf: '#ef4444',
 };
@@ -0,0 +1 @@
 /// <reference types="vite/client" />
@@ -0,0 +1,25 @@
 {
  "compilerOptions": {
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
    "target": "es2023",
    "lib": ["ES2023", "DOM"],
    "module": "esnext",
    "types": ["vite/client"],
    "skipLibCheck": true,
    /* Bundler mode */
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "moduleDetection": "force",
    "noEmit": true,
    "jsx": "react-jsx",
    /* Linting */
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "erasableSyntaxOnly": true,
    "noFallthroughCasesInSwitch": true
  },
  "include": ["src"]
 }
@@ -0,0 +1,7 @@
 {
  "files": [],
  "references": [
    { "path": "./tsconfig.app.json" },
    { "path": "./tsconfig.node.json" }
  ]
 }
@@ -0,0 +1,24 @@
 {
  "compilerOptions": {
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
    "target": "es2023",
    "lib": ["ES2023"],
    "module": "esnext",
    "types": ["node"],
    "skipLibCheck": true,
    /* Bundler mode */
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "moduleDetection": "force",
    "noEmit": true,
    /* Linting */
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "erasableSyntaxOnly": true,
    "noFallthroughCasesInSwitch": true
  },
  "include": ["vite.config.ts"]
 }
@@ -0,0 +1,19 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 export default defineConfig({
  plugins: [react()],
  server: {
    port: 5173,
    proxy: {
      '/api': {
        target: 'http://127.0.0.1:8000',
        changeOrigin: true,
      },
      '/admin': {
        target: 'http://127.0.0.1:8000',
        changeOrigin: true,
      },
    },
  },
 })
@@ -0,0 +1,14 @@
 {
  "name": "cloud-reader",
  "version": "1.0.0",
  "private": true,
  "workspaces": [
    "frontend",
    "shared"
  ],
  "scripts": {
    "frontend": "yarn workspace frontend dev",
    "backend": "cd backend && python manage.py runserver",
    "build": "yarn workspace frontend build"
  }
 }
		`@@ -0,0 +1 @@`
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