Create manga inventory API with FastAPI and SQLite

- Implemented CRUD operations for manga, authors, publishers, and genres
- Added search and filtering functionality
- Set up SQLAlchemy ORM with SQLite database
- Configured Alembic for database migrations
- Implemented logging with Loguru
- Added comprehensive API documentation
- Set up error handling and validation
- Added ruff for linting and formatting

README.md

@@ -1,3 +1,170 @@
-# FastAPI Application
+# Manga Inventory API
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A FastAPI-based RESTful API for managing a manga book inventory.
+
+## Features
+
+- Complete CRUD operations for manga books, authors, publishers, and genres
+- Search and filtering capabilities for manga inventory
+- SQLite database with SQLAlchemy ORM
+- Alembic for database migrations
+- Pydantic for data validation
+- Comprehensive logging with Loguru
+
+## Tech Stack
+
+- Python 3.10+
+- FastAPI
+- SQLAlchemy
+- Alembic
+- Pydantic
+- SQLite
+- Loguru
+
+## Project Structure
+
+```
+manga-inventory-api/
+├── alembic.ini
+├── app/
+│   ├── api/
+│   │   ├── deps.py
+│   │   └── v1/
+│   │       ├── api.py
+│   │       └── endpoints/
+│   │           ├── author.py
+│   │           ├── genre.py
+│   │           ├── manga.py
+│   │           └── publisher.py
+│   ├── core/
+│   │   ├── config.py
+│   │   └── logging.py
+│   ├── crud/
+│   │   ├── author.py
+│   │   ├── base.py
+│   │   ├── genre.py
+│   │   ├── manga.py
+│   │   └── publisher.py
+│   ├── db/
+│   │   ├── base.py
+│   │   ├── base_class.py
+│   │   └── session.py
+│   ├── models/
+│   │   └── manga.py
+│   └── schemas/
+│       ├── author.py
+│       ├── genre.py
+│       ├── manga.py
+│       └── publisher.py
+├── main.py
+├── migrations/
+│   ├── env.py
+│   ├── README
+│   ├── script.py.mako
+│   └── versions/
+│       └── 01_initial_tables.py
+├── pyproject.toml
+└── requirements.txt
+```
+
+## Setup and Installation
+
+1. Clone the repository:
+   ```bash
+   git clone <repository-url>
+   cd manga-inventory-api
+   ```
+
+2. Create a virtual environment:
+   ```bash
+   python -m venv venv
+   source venv/bin/activate  # On Windows: venv\Scripts\activate
+   ```
+
+3. Install the dependencies:
+   ```bash
+   pip install -r requirements.txt
+   ```
+
+4. Run the database migrations:
+   ```bash
+   alembic upgrade head
+   ```
+
+5. Start the development server:
+   ```bash
+   uvicorn main:app --reload
+   ```
+
+6. The API will be available at http://localhost:8000
+
+## API Endpoints
+
+### Health Check
+- `GET /health` - Check if the API is running
+
+### Manga
+- `GET /api/v1/manga` - List all manga
+- `POST /api/v1/manga` - Create a new manga
+- `GET /api/v1/manga/{manga_id}` - Get a specific manga
+- `PUT /api/v1/manga/{manga_id}` - Update a manga
+- `DELETE /api/v1/manga/{manga_id}` - Delete a manga
+
+### Authors
+- `GET /api/v1/authors` - List all authors
+- `POST /api/v1/authors` - Create a new author
+- `GET /api/v1/authors/{author_id}` - Get a specific author
+- `PUT /api/v1/authors/{author_id}` - Update an author
+- `DELETE /api/v1/authors/{author_id}` - Delete an author
+
+### Publishers
+- `GET /api/v1/publishers` - List all publishers
+- `POST /api/v1/publishers` - Create a new publisher
+- `GET /api/v1/publishers/{publisher_id}` - Get a specific publisher
+- `PUT /api/v1/publishers/{publisher_id}` - Update a publisher
+- `DELETE /api/v1/publishers/{publisher_id}` - Delete a publisher
+
+### Genres
+- `GET /api/v1/genres` - List all genres
+- `POST /api/v1/genres` - Create a new genre
+- `GET /api/v1/genres/{genre_id}` - Get a specific genre
+- `PUT /api/v1/genres/{genre_id}` - Update a genre
+- `DELETE /api/v1/genres/{genre_id}` - Delete a genre
+
+## Filtering and Searching
+
+You can filter manga using query parameters:
+
+```
+GET /api/v1/manga?title=Naruto&in_stock=true
+```
+
+Available filters:
+- `title` - Filter by title (partial match)
+- `author_id` - Filter by author ID
+- `publisher_id` - Filter by publisher ID
+- `genre_id` - Filter by genre ID
+- `in_stock` - Filter by stock availability (true/false)
+
+## Documentation
+
+Interactive API documentation is available at:
+- Swagger UI: http://localhost:8000/docs
+- ReDoc: http://localhost:8000/redoc
+
+## Development
+
+### Code Formatting and Linting
+
+The project uses Ruff for linting and formatting:
+
+```bash
+# Format code
+ruff format .
+
+# Lint code
+ruff check .
+
+# Fix auto-fixable linting issues
+ruff check --fix .
+```

alembic.ini

@@ -0,0 +1,111 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = migrations
+
+# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
+# Uncomment the line below if you want the files to be prepended with date and time
+# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
+# for all available tokens
+# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.
+prepend_sys_path = .
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the python-dateutil library that can be
+# installed by adding `alembic[tz]` to the pip requirements
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to migrations/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "version_path_separator" below.
+# version_locations = %(here)s/bar:%(here)s/bat:migrations/versions
+
+# version path separator; As mentioned above, this is the character used to split
+# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
+# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
+# Valid values for version_path_separator are:
+#
+# version_path_separator = :
+# version_path_separator = ;
+# version_path_separator = space
+version_path_separator = os  # Use os.pathsep. Default configuration used for new projects.
+
+# set to 'true' to search source files recursively
+# in each "version_locations" directory
+# new in Alembic version 1.10
+# recursive_version_locations = false
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# SQLite URL using absolute path
+sqlalchemy.url = sqlite:////app/storage/db/db.sqlite
+
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

app/api/deps.py

@@ -0,0 +1,14 @@
+from collections.abc import Generator
+
+from app.db.session import SessionLocal
+
+
+def get_db() -> Generator:
+    """
+    Dependency for getting a database session.
+    """
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/api/v1/api.py

@@ -0,0 +1,11 @@
+from fastapi import APIRouter
+
+from app.api.v1 import endpoints
+
+api_router = APIRouter()
+
+# Include all endpoint routers here
+api_router.include_router(endpoints.manga.router, prefix="/manga", tags=["manga"])
+api_router.include_router(endpoints.author.router, prefix="/authors", tags=["authors"])
+api_router.include_router(endpoints.publisher.router, prefix="/publishers", tags=["publishers"])
+api_router.include_router(endpoints.genre.router, prefix="/genres", tags=["genres"])

app/api/v1/endpoints/__init__.py

@@ -0,0 +1,4 @@
+# Import all endpoints modules here
+from app.api.v1.endpoints import author, genre, manga, publisher
+
+__all__ = ["author", "genre", "manga", "publisher"]

app/api/v1/endpoints/author.py

@@ -0,0 +1,116 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import crud, schemas
+from app.api import deps
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[schemas.Author])
+def read_authors(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+) -> Any:
+    """
+    Retrieve authors.
+    """
+    authors = crud.author.get_multi(db, skip=skip, limit=limit)
+    return authors
+
+
+@router.post("/", response_model=schemas.Author)
+def create_author(
+    *,
+    db: Session = Depends(deps.get_db),
+    author_in: schemas.AuthorCreate,
+) -> Any:
+    """
+    Create new author.
+    """
+    author = crud.author.get_by_name(db, name=author_in.name)
+    if author:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="An author with this name already exists.",
+        )
+    author = crud.author.create(db, obj_in=author_in)
+    return author
+
+
+@router.get("/{author_id}", response_model=schemas.Author)
+def read_author(
+    *,
+    db: Session = Depends(deps.get_db),
+    author_id: int,
+) -> Any:
+    """
+    Get author by ID.
+    """
+    author = crud.author.get(db, id=author_id)
+    if not author:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Author not found",
+        )
+    return author
+
+
+@router.put("/{author_id}", response_model=schemas.Author)
+def update_author(
+    *,
+    db: Session = Depends(deps.get_db),
+    author_id: int,
+    author_in: schemas.AuthorUpdate,
+) -> Any:
+    """
+    Update an author.
+    """
+    author = crud.author.get(db, id=author_id)
+    if not author:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Author not found",
+        )
+
+    # Check if updating to an existing name
+    if author_in.name and author_in.name != author.name:
+        existing_author = crud.author.get_by_name(db, name=author_in.name)
+        if existing_author:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="An author with this name already exists.",
+            )
+
+    author = crud.author.update(db, db_obj=author, obj_in=author_in)
+    return author
+
+
+@router.delete("/{author_id}", response_model=schemas.Author)
+def delete_author(
+    *,
+    db: Session = Depends(deps.get_db),
+    author_id: int,
+) -> Any:
+    """
+    Delete an author.
+    """
+    author = crud.author.get(db, id=author_id)
+    if not author:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Author not found",
+        )
+
+    # Check if author has manga associated with it
+    if author.manga_list:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Cannot delete author with associated manga. Remove manga first.",
+        )
+
+    author = crud.author.remove(db, id=author_id)
+    return author

app/api/v1/endpoints/genre.py

@@ -0,0 +1,116 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import crud, schemas
+from app.api import deps
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[schemas.Genre])
+def read_genres(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+) -> Any:
+    """
+    Retrieve genres.
+    """
+    genres = crud.genre.get_multi(db, skip=skip, limit=limit)
+    return genres
+
+
+@router.post("/", response_model=schemas.Genre)
+def create_genre(
+    *,
+    db: Session = Depends(deps.get_db),
+    genre_in: schemas.GenreCreate,
+) -> Any:
+    """
+    Create new genre.
+    """
+    genre = crud.genre.get_by_name(db, name=genre_in.name)
+    if genre:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="A genre with this name already exists.",
+        )
+    genre = crud.genre.create(db, obj_in=genre_in)
+    return genre
+
+
+@router.get("/{genre_id}", response_model=schemas.Genre)
+def read_genre(
+    *,
+    db: Session = Depends(deps.get_db),
+    genre_id: int,
+) -> Any:
+    """
+    Get genre by ID.
+    """
+    genre = crud.genre.get(db, id=genre_id)
+    if not genre:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Genre not found",
+        )
+    return genre
+
+
+@router.put("/{genre_id}", response_model=schemas.Genre)
+def update_genre(
+    *,
+    db: Session = Depends(deps.get_db),
+    genre_id: int,
+    genre_in: schemas.GenreUpdate,
+) -> Any:
+    """
+    Update a genre.
+    """
+    genre = crud.genre.get(db, id=genre_id)
+    if not genre:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Genre not found",
+        )
+
+    # Check if updating to an existing name
+    if genre_in.name and genre_in.name != genre.name:
+        existing_genre = crud.genre.get_by_name(db, name=genre_in.name)
+        if existing_genre:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="A genre with this name already exists.",
+            )
+
+    genre = crud.genre.update(db, db_obj=genre, obj_in=genre_in)
+    return genre
+
+
+@router.delete("/{genre_id}", response_model=schemas.Genre)
+def delete_genre(
+    *,
+    db: Session = Depends(deps.get_db),
+    genre_id: int,
+) -> Any:
+    """
+    Delete a genre.
+    """
+    genre = crud.genre.get(db, id=genre_id)
+    if not genre:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Genre not found",
+        )
+
+    # Check if genre has manga associated with it
+    if genre.manga_list:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Cannot delete genre with associated manga. Remove manga first.",
+        )
+
+    genre = crud.genre.remove(db, id=genre_id)
+    return genre

app/api/v1/endpoints/manga.py

@@ -0,0 +1,193 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import crud, schemas
+from app.api import deps
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[schemas.MangaWithRelations])
+def read_manga(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+    title: str | None = None,
+    author_id: int | None = None,
+    publisher_id: int | None = None,
+    genre_id: int | None = None,
+    in_stock: bool | None = None,
+) -> Any:
+    """
+    Retrieve manga.
+
+    - **title**: Optional filter by title (partial match)
+    - **author_id**: Optional filter by author ID
+    - **publisher_id**: Optional filter by publisher ID
+    - **genre_id**: Optional filter by genre ID
+    - **in_stock**: Optional filter by stock availability
+    """
+    if any([title, author_id, publisher_id, genre_id, in_stock is not None]):
+        # Search with filters
+        manga = crud.manga.search(
+            db,
+            title=title,
+            author_id=author_id,
+            publisher_id=publisher_id,
+            genre_id=genre_id,
+            in_stock=in_stock,
+            skip=skip,
+            limit=limit,
+        )
+    else:
+        # Get all manga
+        manga = crud.manga.get_multi(db, skip=skip, limit=limit)
+    return manga
+
+
+@router.post("/", response_model=schemas.MangaWithRelations)
+def create_manga(
+    *,
+    db: Session = Depends(deps.get_db),
+    manga_in: schemas.MangaCreate,
+) -> Any:
+    """
+    Create new manga.
+    """
+    # Check if ISBN exists and is not empty
+    if manga_in.isbn:
+        manga = crud.manga.get_by_isbn(db, isbn=manga_in.isbn)
+        if manga:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="A manga with this ISBN already exists.",
+            )
+
+    # Validate author_id if provided
+    if manga_in.author_id:
+        author = crud.author.get(db, id=manga_in.author_id)
+        if not author:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Author with ID {manga_in.author_id} not found.",
+            )
+
+    # Validate publisher_id if provided
+    if manga_in.publisher_id:
+        publisher = crud.publisher.get(db, id=manga_in.publisher_id)
+        if not publisher:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Publisher with ID {manga_in.publisher_id} not found.",
+            )
+
+    # Validate genre_ids if provided
+    if manga_in.genre_ids:
+        for genre_id in manga_in.genre_ids:
+            genre = crud.genre.get(db, id=genre_id)
+            if not genre:
+                raise HTTPException(
+                    status_code=status.HTTP_400_BAD_REQUEST,
+                    detail=f"Genre with ID {genre_id} not found.",
+                )
+
+    manga = crud.manga.create(db, obj_in=manga_in)
+    return manga
+
+
+@router.get("/{manga_id}", response_model=schemas.MangaWithRelations)
+def read_manga_by_id(
+    *,
+    db: Session = Depends(deps.get_db),
+    manga_id: int,
+) -> Any:
+    """
+    Get manga by ID.
+    """
+    manga = crud.manga.get(db, id=manga_id)
+    if not manga:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Manga not found",
+        )
+    return manga
+
+
+@router.put("/{manga_id}", response_model=schemas.MangaWithRelations)
+def update_manga(
+    *,
+    db: Session = Depends(deps.get_db),
+    manga_id: int,
+    manga_in: schemas.MangaUpdate,
+) -> Any:
+    """
+    Update a manga.
+    """
+    manga = crud.manga.get(db, id=manga_id)
+    if not manga:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Manga not found",
+        )
+
+    # Check if ISBN is being updated and already exists
+    if manga_in.isbn and manga_in.isbn != manga.isbn:
+        existing_manga = crud.manga.get_by_isbn(db, isbn=manga_in.isbn)
+        if existing_manga:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="A manga with this ISBN already exists.",
+            )
+
+    # Validate author_id if provided
+    if manga_in.author_id:
+        author = crud.author.get(db, id=manga_in.author_id)
+        if not author:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Author with ID {manga_in.author_id} not found.",
+            )
+
+    # Validate publisher_id if provided
+    if manga_in.publisher_id:
+        publisher = crud.publisher.get(db, id=manga_in.publisher_id)
+        if not publisher:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"Publisher with ID {manga_in.publisher_id} not found.",
+            )
+
+    # Validate genre_ids if provided
+    if manga_in.genre_ids:
+        for genre_id in manga_in.genre_ids:
+            genre = crud.genre.get(db, id=genre_id)
+            if not genre:
+                raise HTTPException(
+                    status_code=status.HTTP_400_BAD_REQUEST,
+                    detail=f"Genre with ID {genre_id} not found.",
+                )
+
+    manga = crud.manga.update(db, db_obj=manga, obj_in=manga_in)
+    return manga
+
+
+@router.delete("/{manga_id}", response_model=schemas.Manga)
+def delete_manga(
+    *,
+    db: Session = Depends(deps.get_db),
+    manga_id: int,
+) -> Any:
+    """
+    Delete a manga.
+    """
+    manga = crud.manga.get(db, id=manga_id)
+    if not manga:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Manga not found",
+        )
+
+    manga = crud.manga.remove(db, id=manga_id)
+    return manga

app/api/v1/endpoints/publisher.py

@@ -0,0 +1,116 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app import crud, schemas
+from app.api import deps
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[schemas.Publisher])
+def read_publishers(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+) -> Any:
+    """
+    Retrieve publishers.
+    """
+    publishers = crud.publisher.get_multi(db, skip=skip, limit=limit)
+    return publishers
+
+
+@router.post("/", response_model=schemas.Publisher)
+def create_publisher(
+    *,
+    db: Session = Depends(deps.get_db),
+    publisher_in: schemas.PublisherCreate,
+) -> Any:
+    """
+    Create new publisher.
+    """
+    publisher = crud.publisher.get_by_name(db, name=publisher_in.name)
+    if publisher:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="A publisher with this name already exists.",
+        )
+    publisher = crud.publisher.create(db, obj_in=publisher_in)
+    return publisher
+
+
+@router.get("/{publisher_id}", response_model=schemas.Publisher)
+def read_publisher(
+    *,
+    db: Session = Depends(deps.get_db),
+    publisher_id: int,
+) -> Any:
+    """
+    Get publisher by ID.
+    """
+    publisher = crud.publisher.get(db, id=publisher_id)
+    if not publisher:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Publisher not found",
+        )
+    return publisher
+
+
+@router.put("/{publisher_id}", response_model=schemas.Publisher)
+def update_publisher(
+    *,
+    db: Session = Depends(deps.get_db),
+    publisher_id: int,
+    publisher_in: schemas.PublisherUpdate,
+) -> Any:
+    """
+    Update a publisher.
+    """
+    publisher = crud.publisher.get(db, id=publisher_id)
+    if not publisher:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Publisher not found",
+        )
+
+    # Check if updating to an existing name
+    if publisher_in.name and publisher_in.name != publisher.name:
+        existing_publisher = crud.publisher.get_by_name(db, name=publisher_in.name)
+        if existing_publisher:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="A publisher with this name already exists.",
+            )
+
+    publisher = crud.publisher.update(db, db_obj=publisher, obj_in=publisher_in)
+    return publisher
+
+
+@router.delete("/{publisher_id}", response_model=schemas.Publisher)
+def delete_publisher(
+    *,
+    db: Session = Depends(deps.get_db),
+    publisher_id: int,
+) -> Any:
+    """
+    Delete a publisher.
+    """
+    publisher = crud.publisher.get(db, id=publisher_id)
+    if not publisher:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Publisher not found",
+        )
+
+    # Check if publisher has manga associated with it
+    if publisher.manga_list:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Cannot delete publisher with associated manga. Remove manga first.",
+        )
+
+    publisher = crud.publisher.remove(db, id=publisher_id)
+    return publisher

app/core/config.py

@@ -0,0 +1,26 @@
+from pydantic import AnyHttpUrl, validator
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    API_V1_STR: str = "/api/v1"
+    PROJECT_NAME: str = "Manga Inventory API"
+    VERSION: str = "0.1.0"
+
+    # CORS Configuration
+    BACKEND_CORS_ORIGINS: list[str | AnyHttpUrl] = []
+
+    @validator("BACKEND_CORS_ORIGINS", pre=True)
+    def assemble_cors_origins(self, v: str | list[str]) -> list[str] | str:
+        if isinstance(v, str) and not v.startswith("["):
+            return [i.strip() for i in v.split(",")]
+        elif isinstance(v, list | str):
+            return v
+        raise ValueError(v)
+
+    class Config:
+        case_sensitive = True
+        env_file = ".env"
+
+
+settings = Settings()

app/core/logging.py

@@ -0,0 +1,86 @@
+import logging
+import sys
+
+from loguru import logger
+from pydantic import BaseModel
+
+
+class LogConfig(BaseModel):
+    """Logging configuration"""
+
+    LOGGER_NAME: str = "manga_inventory_api"
+    LOG_FORMAT: str = (
+        "<green>{time:YYYY-MM-DD HH:mm:ss.SSS}</green> | "
+        "<level>{level: <8}</level> | "
+        "<cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - "
+        "<level>{message}</level>"
+    )
+    LOG_LEVEL: str = "INFO"
+    LOG_FILE_PATH: str | None = None
+    LOG_ROTATION: str | None = "20 MB"
+    LOG_RETENTION: str | None = "1 week"
+    LOG_JSON: bool = False
+
+
+def setup_logging(config: LogConfig = LogConfig()) -> None:
+    """Configure Loguru logger"""
+
+    # Intercept standard logging
+    logging.getLogger().handlers = [InterceptHandler()]
+
+    # Remove default handlers
+    logger.remove()
+
+    # Add console handler
+    logger.add(
+        sys.stdout,
+        enqueue=True,
+        backtrace=True,
+        format=config.LOG_FORMAT,
+        level=config.LOG_LEVEL,
+        colorize=True,
+    )
+
+    # Add file handler if path is specified
+    if config.LOG_FILE_PATH:
+        logger.add(
+            config.LOG_FILE_PATH,
+            rotation=config.LOG_ROTATION,
+            retention=config.LOG_RETENTION,
+            enqueue=True,
+            backtrace=True,
+            format=config.LOG_FORMAT,
+            level=config.LOG_LEVEL,
+            colorize=False,
+            serialize=config.LOG_JSON,
+        )
+
+    # Configure standard library logging
+    for _log in ["uvicorn", "uvicorn.error", "fastapi"]:
+        _logger = logging.getLogger(_log)
+        _logger.handlers = [InterceptHandler()]
+        _logger.propagate = False
+
+    logger.info("Logging configured successfully")
+
+
+class InterceptHandler(logging.Handler):
+    """
+    Intercept handler for standard library logging to redirect to loguru.
+    """
+
+    def emit(self, record: logging.LogRecord) -> None:
+        """
+        Intercepts log records and redirects them to loguru.
+        """
+        try:
+            level = logger.level(record.levelname).name
+        except ValueError:
+            level = record.levelno
+
+        frame, depth = logging.currentframe(), 2
+        while frame.f_code.co_filename == logging.__file__:
+            frame = frame.f_back
+            depth += 1
+
+        logger.opt(depth=depth, exception=record.exc_info).log(level, record.getMessage())

app/crud/__init__.py

@@ -0,0 +1,6 @@
+from app.crud.author import author
+from app.crud.genre import genre
+from app.crud.manga import manga
+from app.crud.publisher import publisher
+
+__all__ = ["author", "genre", "manga", "publisher"]

app/crud/author.py

@@ -0,0 +1,22 @@
+from sqlalchemy.orm import Session
+
+from app.crud.base import CRUDBase
+from app.models.manga import Author
+from app.schemas.author import AuthorCreate, AuthorUpdate
+
+
+class CRUDAuthor(CRUDBase[Author, AuthorCreate, AuthorUpdate]):
+    def get_by_name(self, db: Session, *, name: str) -> Author | None:
+        """
+        Get an author by name.
+        """
+        return db.query(Author).filter(Author.name == name).first()
+
+    def get_multi_with_manga(self, db: Session, *, skip: int = 0, limit: int = 100) -> list[Author]:
+        """
+        Get multiple authors with their manga lists.
+        """
+        return db.query(Author).offset(skip).limit(limit).all()
+
+
+author = CRUDAuthor(Author)

app/crud/base.py

@@ -0,0 +1,75 @@
+from typing import Any, Generic, TypeVar
+
+from fastapi.encoders import jsonable_encoder
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.db.base_class import Base
+
+ModelType = TypeVar("ModelType", bound=Base)
+CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
+UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
+
+
+class CRUDBase(Generic[ModelType, CreateSchemaType, UpdateSchemaType]):
+    def __init__(self, model: type[ModelType]):
+        """
+        CRUD object with default methods to Create, Read, Update, Delete (CRUD).
+
+        **Parameters**
+
+        * `model`: A SQLAlchemy model class
+        * `schema`: A Pydantic model (schema) class
+        """
+        self.model = model
+
+    def get(self, db: Session, id: Any) -> ModelType | None:
+        """
+        Get a record by ID.
+        """
+        return db.query(self.model).filter(self.model.id == id).first()
+
+    def get_multi(self, db: Session, *, skip: int = 0, limit: int = 100) -> list[ModelType]:
+        """
+        Get multiple records with pagination.
+        """
+        return db.query(self.model).offset(skip).limit(limit).all()
+
+    def create(self, db: Session, *, obj_in: CreateSchemaType) -> ModelType:
+        """
+        Create a new record.
+        """
+        obj_in_data = jsonable_encoder(obj_in)
+        db_obj = self.model(**obj_in_data)
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self, db: Session, *, db_obj: ModelType, obj_in: UpdateSchemaType | dict[str, Any]
+    ) -> ModelType:
+        """
+        Update a record.
+        """
+        obj_data = jsonable_encoder(db_obj)
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.dict(exclude_unset=True)
+        for field in obj_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def remove(self, db: Session, *, id: int) -> ModelType:
+        """
+        Delete a record.
+        """
+        obj = db.query(self.model).get(id)
+        db.delete(obj)
+        db.commit()
+        return obj

app/crud/genre.py

@@ -0,0 +1,28 @@
+from sqlalchemy.orm import Session
+
+from app.crud.base import CRUDBase
+from app.models.manga import Genre
+from app.schemas.genre import GenreCreate, GenreUpdate
+
+
+class CRUDGenre(CRUDBase[Genre, GenreCreate, GenreUpdate]):
+    def get_by_name(self, db: Session, *, name: str) -> Genre | None:
+        """
+        Get a genre by name.
+        """
+        return db.query(Genre).filter(Genre.name == name).first()
+
+    def create_if_not_exists(
+        self, db: Session, *, name: str, description: str | None = None
+    ) -> Genre:
+        """
+        Create a genre if it doesn't exist, otherwise return the existing one.
+        """
+        genre = self.get_by_name(db, name=name)
+        if not genre:
+            genre_in = GenreCreate(name=name, description=description)
+            genre = self.create(db, obj_in=genre_in)
+        return genre
+
+
+genre = CRUDGenre(Genre)

app/crud/manga.py

@@ -0,0 +1,144 @@
+from typing import Any
+
+from fastapi.encoders import jsonable_encoder
+from sqlalchemy.orm import Session, joinedload
+
+from app.crud.base import CRUDBase
+from app.models.manga import Manga, MangaGenre
+from app.schemas.manga import MangaCreate, MangaUpdate
+
+
+class CRUDManga(CRUDBase[Manga, MangaCreate, MangaUpdate]):
+    def get(self, db: Session, id: Any) -> Manga | None:
+        """
+        Get a manga by ID with all relationships loaded.
+        """
+        return (
+            db.query(Manga)
+            .filter(Manga.id == id)
+            .options(
+                joinedload(Manga.author),
+                joinedload(Manga.publisher),
+                joinedload(Manga.genres).joinedload(MangaGenre.genre),
+            )
+            .first()
+        )
+
+    def get_by_isbn(self, db: Session, *, isbn: str) -> Manga | None:
+        """
+        Get a manga by ISBN.
+        """
+        return db.query(Manga).filter(Manga.isbn == isbn).first()
+
+    def get_multi(self, db: Session, *, skip: int = 0, limit: int = 100) -> list[Manga]:
+        """
+        Get multiple manga with all relationships loaded.
+        """
+        return (
+            db.query(Manga)
+            .options(
+                joinedload(Manga.author),
+                joinedload(Manga.publisher),
+                joinedload(Manga.genres).joinedload(MangaGenre.genre),
+            )
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+    def create(self, db: Session, *, obj_in: MangaCreate) -> Manga:
+        """
+        Create a new manga with genre relationships.
+        """
+        obj_in_data = jsonable_encoder(obj_in, exclude={"genre_ids"})
+        db_obj = Manga(**obj_in_data)
+        db.add(db_obj)
+        db.flush()  # Flush to get the ID
+
+        # Add genres if provided
+        if obj_in.genre_ids:
+            for genre_id in obj_in.genre_ids:
+                manga_genre = MangaGenre(manga_id=db_obj.id, genre_id=genre_id)
+                db.add(manga_genre)
+
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(self, db: Session, *, db_obj: Manga, obj_in: MangaUpdate | dict[str, Any]) -> Manga:
+        """
+        Update a manga with genre relationships.
+        """
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+            genre_ids = update_data.pop("genre_ids", None)
+        else:
+            update_data = obj_in.dict(exclude_unset=True)
+            genre_ids = update_data.pop("genre_ids", None) if "genre_ids" in update_data else None
+
+        # Update the manga object
+        obj_data = jsonable_encoder(db_obj)
+        for field in obj_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+
+        # Update genres if provided
+        if genre_ids is not None:
+            # Remove existing genres
+            db.query(MangaGenre).filter(MangaGenre.manga_id == db_obj.id).delete()
+
+            # Add new genres
+            for genre_id in genre_ids:
+                manga_genre = MangaGenre(manga_id=db_obj.id, genre_id=genre_id)
+                db.add(manga_genre)
+
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def search(
+        self,
+        db: Session,
+        *,
+        title: str | None = None,
+        author_id: int | None = None,
+        publisher_id: int | None = None,
+        genre_id: int | None = None,
+        in_stock: bool | None = None,
+        skip: int = 0,
+        limit: int = 100,
+    ) -> list[Manga]:
+        """
+        Search manga by various criteria.
+        """
+        query = db.query(Manga)
+
+        if title:
+            query = query.filter(Manga.title.ilike(f"%{title}%"))
+
+        if author_id:
+            query = query.filter(Manga.author_id == author_id)
+
+        if publisher_id:
+            query = query.filter(Manga.publisher_id == publisher_id)
+
+        if genre_id:
+            query = query.join(Manga.genres).filter(MangaGenre.genre_id == genre_id)
+
+        if in_stock is not None:
+            query = query.filter(Manga.in_stock == in_stock)
+
+        return (
+            query.options(
+                joinedload(Manga.author),
+                joinedload(Manga.publisher),
+                joinedload(Manga.genres).joinedload(MangaGenre.genre),
+            )
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+
+manga = CRUDManga(Manga)

app/crud/publisher.py

@@ -0,0 +1,24 @@
+from sqlalchemy.orm import Session
+
+from app.crud.base import CRUDBase
+from app.models.manga import Publisher
+from app.schemas.publisher import PublisherCreate, PublisherUpdate
+
+
+class CRUDPublisher(CRUDBase[Publisher, PublisherCreate, PublisherUpdate]):
+    def get_by_name(self, db: Session, *, name: str) -> Publisher | None:
+        """
+        Get a publisher by name.
+        """
+        return db.query(Publisher).filter(Publisher.name == name).first()
+
+    def get_multi_with_manga(
+        self, db: Session, *, skip: int = 0, limit: int = 100
+    ) -> list[Publisher]:
+        """
+        Get multiple publishers with their manga lists.
+        """
+        return db.query(Publisher).offset(skip).limit(limit).all()
+
+
+publisher = CRUDPublisher(Publisher)

app/db/base.py

@@ -0,0 +1,5 @@
+# Import all the models for Alembic to detect
+from app.db.base_class import Base  # noqa
+
+# Import all models here for Alembic to detect them
+from app.models.manga import Author, Genre, Manga, MangaGenre, Publisher  # noqa

app/db/base_class.py

@@ -0,0 +1,14 @@
+from typing import Any
+
+from sqlalchemy.ext.declarative import declared_attr
+from sqlalchemy.orm import DeclarativeBase
+
+
+class Base(DeclarativeBase):
+    id: Any
+    __name__: str
+
+    # Generate __tablename__ automatically
+    @declared_attr.directive
+    def __tablename__(self) -> str:
+        return self.__name__.lower()

app/db/session.py

@@ -0,0 +1,13 @@
+from pathlib import Path
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+# Create the directory for the SQLite database if it doesn't exist
+DB_DIR = Path("/app") / "storage" / "db"
+DB_DIR.mkdir(parents=True, exist_ok=True)
+
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_DIR}/db.sqlite"
+
+engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

app/models/manga.py

@@ -0,0 +1,114 @@
+from datetime import datetime
+
+from sqlalchemy import Boolean, DateTime, Float, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.db.base_class import Base
+
+
+class Author(Base):
+    """Author model for manga creators."""
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
+    biography: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    # Relationship with Manga
+    manga_list = relationship("Manga", back_populates="author")
+
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False
+    )
+
+
+class Publisher(Base):
+    """Publisher model for manga books."""
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
+    website: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    country: Mapped[str | None] = mapped_column(String(50), nullable=True)
+
+    # Relationship with Manga
+    manga_list = relationship("Manga", back_populates="publisher")
+
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False
+    )
+
+
+class Genre(Base):
+    """Genre model for manga classification."""
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
+    name: Mapped[str] = mapped_column(String(50), nullable=False, index=True, unique=True)
+    description: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    # Relationship with Manga
+    manga_list = relationship("MangaGenre", back_populates="genre")
+
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False
+    )
+
+
+class Manga(Base):
+    """Manga model representing a manga book in inventory."""
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
+    title: Mapped[str] = mapped_column(String(255), nullable=False, index=True)
+    original_title: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    isbn: Mapped[str | None] = mapped_column(String(20), nullable=True, index=True, unique=True)
+    description: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    # Volume information
+    volume_number: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    total_volumes: Mapped[int | None] = mapped_column(Integer, nullable=True)
+
+    # Foreign keys
+    author_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("author.id"), nullable=True)
+    publisher_id: Mapped[int | None] = mapped_column(
+        Integer, ForeignKey("publisher.id"), nullable=True
+    )
+
+    # Relationships
+    author = relationship("Author", back_populates="manga_list")
+    publisher = relationship("Publisher", back_populates="manga_list")
+    genres = relationship("MangaGenre", back_populates="manga")
+
+    # Publication information
+    publication_date: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
+
+    # Physical attributes
+    page_count: Mapped[int | None] = mapped_column(Integer, nullable=True)
+
+    # Inventory information
+    price: Mapped[float | None] = mapped_column(Float, nullable=True)
+    quantity: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+    in_stock: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+
+    # Ratings and metadata
+    rating: Mapped[float | None] = mapped_column(Float, nullable=True)
+    language: Mapped[str | None] = mapped_column(String(50), nullable=True)
+    cover_image_url: Mapped[str | None] = mapped_column(String(255), nullable=True)
+
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False
+    )
+
+
+class MangaGenre(Base):
+    """Junction table for many-to-many relationship between Manga and Genre."""
+
+    manga_id: Mapped[int] = mapped_column(Integer, ForeignKey("manga.id"), primary_key=True)
+    genre_id: Mapped[int] = mapped_column(Integer, ForeignKey("genre.id"), primary_key=True)
+
+    # Relationships
+    manga = relationship("Manga", back_populates="genres")
+    genre = relationship("Genre", back_populates="manga_list")
+
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)

app/schemas/__init__.py

@@ -0,0 +1,32 @@
+from app.schemas.author import Author, AuthorCreate, AuthorInDB, AuthorUpdate, AuthorWithManga
+from app.schemas.genre import Genre, GenreCreate, GenreInDB, GenreUpdate
+from app.schemas.manga import Manga, MangaCreate, MangaInDB, MangaUpdate, MangaWithRelations
+from app.schemas.publisher import (
+    Publisher,
+    PublisherCreate,
+    PublisherInDB,
+    PublisherUpdate,
+    PublisherWithManga,
+)
+
+__all__ = [
+    "Author",
+    "AuthorCreate",
+    "AuthorInDB",
+    "AuthorUpdate",
+    "AuthorWithManga",
+    "Genre",
+    "GenreCreate",
+    "GenreInDB",
+    "GenreUpdate",
+    "Manga",
+    "MangaCreate",
+    "MangaInDB",
+    "MangaUpdate",
+    "MangaWithRelations",
+    "Publisher",
+    "PublisherCreate",
+    "PublisherInDB",
+    "PublisherUpdate",
+    "PublisherWithManga",
+]

app/schemas/author.py

@@ -0,0 +1,46 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+# Shared properties
+class AuthorBase(BaseModel):
+    name: str = Field(..., min_length=1, max_length=100, description="Name of the author")
+    biography: str | None = Field(None, description="Author's biography")
+
+
+# Properties to receive on author creation
+class AuthorCreate(AuthorBase):
+    pass
+
+
+# Properties to receive on author update
+class AuthorUpdate(AuthorBase):
+    name: str | None = Field(None, min_length=1, max_length=100, description="Name of the author")
+
+
+# Properties shared by models stored in DB
+class AuthorInDBBase(AuthorBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        orm_mode = True
+
+
+# Properties to return to client
+class Author(AuthorInDBBase):
+    pass
+
+
+# Properties properties stored in DB
+class AuthorInDB(AuthorInDBBase):
+    pass
+
+
+# Additional properties for response with manga list
+class AuthorWithManga(Author):
+    from app.schemas.manga import Manga  # Avoid circular import
+
+    manga_list: list[Manga] = []

app/schemas/genre.py

@@ -0,0 +1,39 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+# Shared properties
+class GenreBase(BaseModel):
+    name: str = Field(..., min_length=1, max_length=50, description="Name of the genre")
+    description: str | None = Field(None, description="Description of the genre")
+
+
+# Properties to receive on genre creation
+class GenreCreate(GenreBase):
+    pass
+
+
+# Properties to receive on genre update
+class GenreUpdate(GenreBase):
+    name: str | None = Field(None, min_length=1, max_length=50, description="Name of the genre")
+
+
+# Properties shared by models stored in DB
+class GenreInDBBase(GenreBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        orm_mode = True
+
+
+# Properties to return to client
+class Genre(GenreInDBBase):
+    pass
+
+
+# Properties properties stored in DB
+class GenreInDB(GenreInDBBase):
+    pass

app/schemas/manga.py

@@ -0,0 +1,80 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field, validator
+
+from app.schemas.author import Author
+from app.schemas.genre import Genre
+from app.schemas.publisher import Publisher
+
+
+# Shared properties
+class MangaBase(BaseModel):
+    title: str = Field(..., min_length=1, max_length=255, description="Title of the manga")
+    original_title: str | None = Field(
+        None, max_length=255, description="Original title in Japanese or other language"
+    )
+    isbn: str | None = Field(None, max_length=20, description="ISBN of the manga volume")
+    description: str | None = Field(None, description="Description of the manga")
+    volume_number: int | None = Field(None, ge=1, description="Volume number in the series")
+    total_volumes: int | None = Field(
+        None, ge=1, description="Total number of volumes in the series"
+    )
+    publication_date: datetime | None = Field(None, description="Publication date of the manga")
+    page_count: int | None = Field(None, ge=1, description="Number of pages")
+    price: float | None = Field(None, ge=0, description="Price of the manga")
+    quantity: int = Field(0, ge=0, description="Quantity in inventory")
+    in_stock: bool = Field(True, description="Whether the manga is in stock")
+    rating: float | None = Field(None, ge=0, le=10, description="Rating of the manga (0-10)")
+    language: str | None = Field(None, max_length=50, description="Language of the manga")
+    cover_image_url: str | None = Field(None, max_length=255, description="URL to the cover image")
+
+    @validator("total_volumes")
+    def validate_total_volumes(self, v, values):
+        if v is not None and "volume_number" in values and values["volume_number"] is not None:
+            if v < values["volume_number"]:
+                raise ValueError("Total volumes must be greater than or equal to volume number")
+        return v
+
+
+# Properties to receive on manga creation
+class MangaCreate(MangaBase):
+    author_id: int | None = Field(None, description="ID of the author")
+    publisher_id: int | None = Field(None, description="ID of the publisher")
+    genre_ids: list[int] | None = Field(None, description="IDs of the genres")
+
+
+# Properties to receive on manga update
+class MangaUpdate(MangaBase):
+    title: str | None = Field(None, min_length=1, max_length=255, description="Title of the manga")
+    author_id: int | None = Field(None, description="ID of the author")
+    publisher_id: int | None = Field(None, description="ID of the publisher")
+    genre_ids: list[int] | None = Field(None, description="IDs of the genres")
+
+
+# Properties shared by models stored in DB
+class MangaInDBBase(MangaBase):
+    id: int
+    author_id: int | None
+    publisher_id: int | None
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        orm_mode = True
+
+
+# Properties to return to client
+class Manga(MangaInDBBase):
+    pass
+
+
+# Properties properties stored in DB
+class MangaInDB(MangaInDBBase):
+    pass
+
+
+# Additional properties for response with relationships
+class MangaWithRelations(Manga):
+    author: Author | None = None
+    publisher: Publisher | None = None
+    genres: list[Genre] = []

app/schemas/publisher.py

@@ -0,0 +1,49 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+# Shared properties
+class PublisherBase(BaseModel):
+    name: str = Field(..., min_length=1, max_length=100, description="Name of the publisher")
+    website: str | None = Field(None, description="Website URL of the publisher")
+    country: str | None = Field(None, max_length=50, description="Country of the publisher")
+
+
+# Properties to receive on publisher creation
+class PublisherCreate(PublisherBase):
+    pass
+
+
+# Properties to receive on publisher update
+class PublisherUpdate(PublisherBase):
+    name: str | None = Field(
+        None, min_length=1, max_length=100, description="Name of the publisher"
+    )
+
+
+# Properties shared by models stored in DB
+class PublisherInDBBase(PublisherBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        orm_mode = True
+
+
+# Properties to return to client
+class Publisher(PublisherInDBBase):
+    pass
+
+
+# Properties properties stored in DB
+class PublisherInDB(PublisherInDBBase):
+    pass
+
+
+# Additional properties for response with manga list
+class PublisherWithManga(Publisher):
+    from app.schemas.manga import Manga  # Avoid circular import
+
+    manga_list: list[Manga] = []

main.py

@@ -0,0 +1,83 @@
+import time
+from contextlib import asynccontextmanager
+
+import uvicorn
+from fastapi import FastAPI, Request
+from fastapi.middleware.cors import CORSMiddleware
+from loguru import logger
+
+from app.api.v1.api import api_router
+from app.core.config import settings
+from app.core.logging import setup_logging
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """
+    Context manager for FastAPI app lifespan events.
+
+    Startup and shutdown events run on application startup and shutdown.
+    """
+    # Setup logging on startup
+    setup_logging()
+    logger.info(f"Starting up {settings.PROJECT_NAME}")
+
+    yield  # Run the application
+
+    # Clean up resources on shutdown
+    logger.info(f"Shutting down {settings.PROJECT_NAME}")
+
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    openapi_url="/openapi.json",
+    version=settings.VERSION,
+    lifespan=lifespan,
+)
+
+
+# Add middleware
+@app.middleware("http")
+async def add_process_time_header(request: Request, call_next):
+    """
+    Middleware to add X-Process-Time header to response.
+    """
+    start_time = time.time()
+    response = await call_next(request)
+    process_time = time.time() - start_time
+    response.headers["X-Process-Time"] = str(process_time)
+
+    # Log request details
+    logger.info(
+        f"{request.method} {request.url.path} "
+        f"Status: {response.status_code} "
+        f"Process Time: {process_time:.4f}s"
+    )
+
+    return response
+
+
+# Set all CORS enabled origins
+if settings.BACKEND_CORS_ORIGINS:
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=[str(origin) for origin in settings.BACKEND_CORS_ORIGINS],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+
+@app.get("/health", tags=["health"])
+async def health_check():
+    """
+    Health check endpoint to verify the API is running.
+    """
+    logger.debug("Health check endpoint called")
+    return {"status": "healthy"}
+
+
+if __name__ == "__main__":
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)

migrations/README

@@ -0,0 +1 @@
+Generic single-database configuration for Alembic.

migrations/env.py

@@ -0,0 +1,80 @@
+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+from app.db.base import Base  # noqa
+
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        is_sqlite = connection.dialect.name == "sqlite"
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            render_as_batch=is_sqlite,  # Key configuration for SQLite
+            compare_type=True,
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

@@ -0,0 +1,26 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

migrations/versions/01_initial_tables.py

@@ -0,0 +1,131 @@
+"""Initial tables
+
+Revision ID: 01_initial_tables
+Revises:
+Create Date: 2023-11-10
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "01_initial_tables"
+down_revision: str | None = None
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    # Create author table
+    op.create_table(
+        "author",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("name", sa.String(length=100), nullable=False),
+        sa.Column("biography", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_author_id"), "author", ["id"], unique=False)
+    op.create_index(op.f("ix_author_name"), "author", ["name"], unique=False)
+
+    # Create publisher table
+    op.create_table(
+        "publisher",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("name", sa.String(length=100), nullable=False),
+        sa.Column("website", sa.String(length=255), nullable=True),
+        sa.Column("country", sa.String(length=50), nullable=True),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_publisher_id"), "publisher", ["id"], unique=False)
+    op.create_index(op.f("ix_publisher_name"), "publisher", ["name"], unique=False)
+
+    # Create genre table
+    op.create_table(
+        "genre",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("name", sa.String(length=50), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_genre_id"), "genre", ["id"], unique=False)
+    op.create_index(op.f("ix_genre_name"), "genre", ["name"], unique=True)
+
+    # Create manga table
+    op.create_table(
+        "manga",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("title", sa.String(length=255), nullable=False),
+        sa.Column("original_title", sa.String(length=255), nullable=True),
+        sa.Column("isbn", sa.String(length=20), nullable=True),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("volume_number", sa.Integer(), nullable=True),
+        sa.Column("total_volumes", sa.Integer(), nullable=True),
+        sa.Column("author_id", sa.Integer(), nullable=True),
+        sa.Column("publisher_id", sa.Integer(), nullable=True),
+        sa.Column("publication_date", sa.DateTime(), nullable=True),
+        sa.Column("page_count", sa.Integer(), nullable=True),
+        sa.Column("price", sa.Float(), nullable=True),
+        sa.Column("quantity", sa.Integer(), nullable=False, server_default="0"),
+        sa.Column("in_stock", sa.Boolean(), nullable=False, server_default="1"),
+        sa.Column("rating", sa.Float(), nullable=True),
+        sa.Column("language", sa.String(length=50), nullable=True),
+        sa.Column("cover_image_url", sa.String(length=255), nullable=True),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["author_id"],
+            ["author.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["publisher_id"],
+            ["publisher.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(op.f("ix_manga_id"), "manga", ["id"], unique=False)
+    op.create_index(op.f("ix_manga_isbn"), "manga", ["isbn"], unique=True)
+    op.create_index(op.f("ix_manga_title"), "manga", ["title"], unique=False)
+
+    # Create manga_genre table (junction table)
+    op.create_table(
+        "manga_genre",
+        sa.Column("manga_id", sa.Integer(), nullable=False),
+        sa.Column("genre_id", sa.Integer(), nullable=False),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["genre_id"],
+            ["genre.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["manga_id"],
+            ["manga.id"],
+        ),
+        sa.PrimaryKeyConstraint("manga_id", "genre_id"),
+    )
+
+
+def downgrade() -> None:
+    # Drop tables in reverse order
+    op.drop_table("manga_genre")
+    op.drop_index(op.f("ix_manga_title"), table_name="manga")
+    op.drop_index(op.f("ix_manga_isbn"), table_name="manga")
+    op.drop_index(op.f("ix_manga_id"), table_name="manga")
+    op.drop_table("manga")
+    op.drop_index(op.f("ix_genre_name"), table_name="genre")
+    op.drop_index(op.f("ix_genre_id"), table_name="genre")
+    op.drop_table("genre")
+    op.drop_index(op.f("ix_publisher_name"), table_name="publisher")
+    op.drop_index(op.f("ix_publisher_id"), table_name="publisher")
+    op.drop_table("publisher")
+    op.drop_index(op.f("ix_author_name"), table_name="author")
+    op.drop_index(op.f("ix_author_id"), table_name="author")
+    op.drop_table("author")

pyproject.toml

@@ -0,0 +1,26 @@
+[tool.ruff]
+line-length = 100
+target-version = "py310"
+
+[tool.ruff.lint]
+select = [
+    "E",   # pycodestyle errors
+    "F",   # pyflakes
+    "I",   # isort
+    "N",   # pep8-naming
+    "UP",  # pyupgrade
+    "YTT", # flake8-2020
+]
+ignore = [
+    "E203", # whitespace before ':'
+    "E501", # line too long
+]
+
+[tool.ruff.lint.isort]
+known-third-party = ["fastapi", "pydantic", "sqlalchemy"]
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+line-ending = "auto"
+skip-magic-trailing-comma = false

requirements.txt

@@ -0,0 +1,11 @@
+fastapi>=0.104.1
+uvicorn>=0.24.0
+sqlalchemy>=2.0.23
+pydantic>=2.4.2
+pydantic-settings>=2.0.3
+alembic>=1.12.1
+python-dotenv>=1.0.0
+python-multipart>=0.0.6
+ruff>=0.1.5
+email-validator>=2.1.0
+loguru>=0.7.2