Build task manager API with FastAPI and SQLite

- Set up project structure with FastAPI
- Implement SQLAlchemy models for User and Task
- Create Alembic migrations
- Implement authentication with JWT
- Add CRUD operations for tasks
- Add task filtering and prioritization
- Configure health check endpoint
- Update README with project documentation

README.md

@@ -1,3 +1,137 @@
-# FastAPI Application
+# Task Manager API
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A RESTful API for managing tasks, built with FastAPI and SQLite.
+
+## Features
+
+- User registration and authentication with JWT tokens
+- CRUD operations for tasks
+- Task filtering by status
+- Task prioritization
+- Due dates and completion tracking
+- Health check endpoint
+- OpenAPI documentation
+
+## Getting Started
+
+### Prerequisites
+
+- Python 3.8+
+- pip (Python package manager)
+
+### Installation
+
+1. Clone this repository:
+```bash
+git clone <repository-url>
+cd taskmanagerapi-oyn0px
+```
+
+2. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+3. Set up environment variables (optional):
+```bash
+# For production, you should change these values
+export SECRET_KEY="CHANGE_ME_IN_PRODUCTION"
+export ACCESS_TOKEN_EXPIRE_MINUTES=10080  # 7 days
+```
+
+4. Apply database migrations:
+```bash
+alembic upgrade head
+```
+
+5. Start the server:
+```bash
+uvicorn main:app --host 0.0.0.0 --port 8000 --reload
+```
+
+The API will be available at http://localhost:8000
+
+## API Documentation
+
+Once the server is running, you can access the interactive API documentation at:
+
+- Swagger UI: http://localhost:8000/docs
+- ReDoc: http://localhost:8000/redoc
+
+## API Endpoints
+
+### Authentication
+
+- `POST /api/v1/auth/register` - Register a new user
+- `POST /api/v1/auth/login` - Login and get access token
+
+### Users
+
+- `GET /api/v1/users/me` - Get current user information
+- `PATCH /api/v1/users/me` - Update current user information
+
+### Tasks
+
+- `GET /api/v1/tasks` - List all tasks for the current user
+- `POST /api/v1/tasks` - Create a new task
+- `GET /api/v1/tasks/{task_id}` - Get a specific task
+- `PATCH /api/v1/tasks/{task_id}` - Update a task
+- `DELETE /api/v1/tasks/{task_id}` - Delete a task
+
+### Health Check
+
+- `GET /health` - Check API health status
+
+## Task Model
+
+Tasks have the following properties:
+
+- `id`: Unique identifier (string)
+- `title`: Task title (string, required)
+- `description`: Task description (string, optional)
+- `status`: Task status (enum: todo, in_progress, done)
+- `priority`: Task priority (enum: low, medium, high)
+- `due_date`: Due date for the task (datetime, optional)
+- `completed_at`: When the task was completed (datetime, set automatically when status changes to "done")
+- `created_at`: When the task was created (datetime, automatic)
+- `updated_at`: When the task was last updated (datetime, automatic)
+
+## Database
+
+The API uses SQLite as the database. The database file is stored at `/app/storage/db/db.sqlite`.
+
+## Development
+
+### Running Tests
+
+To run the tests (when implemented):
+
+```bash
+pytest
+```
+
+### Linting
+
+To run linting:
+
+```bash
+ruff check .
+```
+
+To automatically fix linting issues:
+
+```bash
+ruff check --fix .
+```
+
+## Contributing
+
+1. Fork the repository
+2. Create your feature branch: `git checkout -b feature/my-new-feature`
+3. Commit your changes: `git commit -am 'Add some feature'`
+4. Push to the branch: `git push origin feature/my-new-feature`
+5. Submit a pull request
+
+## License
+
+This project is licensed under the MIT License - see the LICENSE file for details.

alembic.ini

@@ -0,0 +1,116 @@
+# 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
+
+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
+
+# lint with attempts to fix using "ruff" - use the exec runner, execute a binary
+# hooks = ruff
+# ruff.type = exec
+# ruff.executable = %(here)s/.venv/bin/ruff
+# ruff.options = --fix 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/__init__.py

@@ -0,0 +1 @@
+# flake8: noqa

app/api/__init__.py

@@ -0,0 +1 @@
+# flake8: noqa

app/api/api_v1/__init__.py

@@ -0,0 +1 @@
+# flake8: noqa

app/api/api_v1/api.py

@@ -0,0 +1,8 @@
+from fastapi import APIRouter
+
+from app.api.api_v1.endpoints import auth, tasks, users
+
+api_router = APIRouter()
+api_router.include_router(auth.router, prefix="/auth", tags=["auth"])
+api_router.include_router(users.router, prefix="/users", tags=["users"])
+api_router.include_router(tasks.router, prefix="/tasks", tags=["tasks"])

app/api/api_v1/deps.py

@@ -0,0 +1,49 @@
+from typing import Generator
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import jwt, JWTError
+from pydantic import ValidationError
+from sqlalchemy.orm import Session
+
+from app import crud, models, schemas
+from app.core.config import settings
+from app.db.session import SessionLocal
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl=f"{settings.API_V1_STR}/auth/login")
+
+
+def get_db() -> Generator:
+    try:
+        db = SessionLocal()
+        yield db
+    finally:
+        db.close()
+
+
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> models.User:
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        token_data = schemas.TokenPayload(**payload)
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    user = crud.user.get(db, id=token_data.sub)
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+    return user
+
+
+def get_current_active_user(
+    current_user: models.User = Depends(get_current_user),
+) -> models.User:
+    if not crud.user.is_active(current_user):
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user

app/api/api_v1/endpoints/__init__.py

@@ -0,0 +1 @@
+# flake8: noqa

app/api/api_v1/endpoints/auth.py

@@ -0,0 +1,55 @@
+from datetime import timedelta
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app import crud, schemas
+from app.api.api_v1 import deps
+from app.core import security
+from app.core.config import settings
+
+router = APIRouter()
+
+
+@router.post("/login", response_model=schemas.Token)
+async def login_access_token(
+    db: Session = Depends(deps.get_db), form_data: OAuth2PasswordRequestForm = Depends()
+) -> Any:
+    """
+    OAuth2 compatible token login, get an access token for future requests
+    """
+    user = crud.user.authenticate(
+        db, email=form_data.username, password=form_data.password
+    )
+    if not user:
+        raise HTTPException(status_code=400, detail="Incorrect email or password")
+    elif not crud.user.is_active(user):
+        raise HTTPException(status_code=400, detail="Inactive user")
+    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    return {
+        "access_token": security.create_access_token(
+            user.id, expires_delta=access_token_expires
+        ),
+        "token_type": "bearer",
+    }
+
+
+@router.post("/register", response_model=schemas.User)
+async def register_user(
+    *,
+    db: Session = Depends(deps.get_db),
+    user_in: schemas.UserCreate,
+) -> Any:
+    """
+    Register a new user
+    """
+    user = crud.user.get_by_email(db, email=user_in.email)
+    if user:
+        raise HTTPException(
+            status_code=400,
+            detail="A user with this email already exists",
+        )
+    user = crud.user.create(db, obj_in=user_in)
+    return user

app/api/api_v1/endpoints/tasks.py

@@ -0,0 +1,111 @@
+from typing import Any, List, Optional
+
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+
+from app import crud, models, schemas
+from app.api.api_v1 import deps
+from app.models.task import TaskStatus
+
+router = APIRouter()
+
+
+@router.get("/", response_model=List[schemas.Task])
+async def read_tasks(
+    db: Session = Depends(deps.get_db),
+    skip: int = 0,
+    limit: int = 100,
+    status: Optional[TaskStatus] = None,
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Retrieve tasks.
+    """
+    if status:
+        tasks = crud.task.get_by_status(
+            db, owner_id=current_user.id, status=status, skip=skip, limit=limit
+        )
+    else:
+        tasks = crud.task.get_multi_by_owner(
+            db, owner_id=current_user.id, skip=skip, limit=limit
+        )
+    return tasks
+
+
+@router.post("/", response_model=schemas.Task)
+async def create_task(
+    *,
+    db: Session = Depends(deps.get_db),
+    task_in: schemas.TaskCreate,
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Create new task.
+    """
+    task = crud.task.create_with_owner(db=db, obj_in=task_in, owner_id=current_user.id)
+    return task
+
+
+@router.get("/{task_id}", response_model=schemas.Task)
+async def read_task(
+    *,
+    db: Session = Depends(deps.get_db),
+    task_id: str,
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get task by ID.
+    """
+    task = crud.task.get(db=db, id=task_id)
+    if not task:
+        raise HTTPException(status_code=404, detail="Task not found")
+    if task.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    return task
+
+
+@router.patch("/{task_id}", response_model=schemas.Task)
+async def update_task(
+    *,
+    db: Session = Depends(deps.get_db),
+    task_id: str,
+    task_in: schemas.TaskUpdate,
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Update a task.
+    """
+    task = crud.task.get(db=db, id=task_id)
+    if not task:
+        raise HTTPException(status_code=404, detail="Task not found")
+    if task.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    
+    # Auto-update completed_at when status is changed to DONE
+    if task_in.status == TaskStatus.DONE and task.status != TaskStatus.DONE:
+        from datetime import datetime
+        task_in.completed_at = datetime.utcnow()
+    elif task_in.status is not None and task_in.status != TaskStatus.DONE and task.status == TaskStatus.DONE:
+        task_in.completed_at = None
+        
+    task = crud.task.update(db=db, db_obj=task, obj_in=task_in)
+    return task
+
+
+@router.delete("/{task_id}", status_code=204, response_model=None)
+async def delete_task(
+    *,
+    db: Session = Depends(deps.get_db),
+    task_id: str,
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Delete a task.
+    """
+    task = crud.task.get(db=db, id=task_id)
+    if not task:
+        raise HTTPException(status_code=404, detail="Task not found")
+    if task.owner_id != current_user.id:
+        raise HTTPException(status_code=403, detail="Not enough permissions")
+    crud.task.remove(db=db, id=task_id)
+    return None

app/api/api_v1/endpoints/users.py

@@ -0,0 +1,33 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from app import crud, models, schemas
+from app.api.api_v1 import deps
+
+router = APIRouter()
+
+
+@router.get("/me", response_model=schemas.User)
+async def read_user_me(
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get current user.
+    """
+    return current_user
+
+
+@router.patch("/me", response_model=schemas.User)
+async def update_user_me(
+    *,
+    db: Session = Depends(deps.get_db),
+    user_in: schemas.UserUpdate,
+    current_user: models.User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Update current user.
+    """
+    user = crud.user.update(db, db_obj=current_user, obj_in=user_in)
+    return user

app/core/__init__.py

@@ -0,0 +1 @@
+# flake8: noqa

app/core/config.py

@@ -0,0 +1,41 @@
+from typing import List
+from pathlib import Path
+from pydantic import AnyHttpUrl, validator
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    API_V1_STR: str = "/api/v1"
+    PROJECT_NAME: str = "Task Manager API"
+    PROJECT_DESCRIPTION: str = "A REST API for managing tasks"
+    
+    # CORS settings
+    BACKEND_CORS_ORIGINS: List[AnyHttpUrl] = []
+
+    @validator("BACKEND_CORS_ORIGINS", pre=True)
+    def assemble_cors_origins(cls, v: str | List[str]) -> List[str]:
+        if isinstance(v, str) and not v.startswith("["):
+            return [i.strip() for i in v.split(",")]
+        if isinstance(v, (list, str)):
+            return v
+        raise ValueError(v)
+
+    # JWT settings
+    SECRET_KEY: str = "CHANGE_ME_IN_PRODUCTION"
+    ALGORITHM: str = "HS256"
+    # 60 minutes * 24 hours * 7 days = 7 days
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24 * 7
+
+    # Database settings
+    DB_DIR: Path = Path("/app") / "storage" / "db"
+    DB_DIR.mkdir(parents=True, exist_ok=True)
+    
+    SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"
+
+    model_config = SettingsConfigDict(
+        env_file=".env",
+        case_sensitive=True,
+    )
+
+
+settings = Settings()

app/core/security.py

@@ -0,0 +1,29 @@
+from datetime import datetime, timedelta
+from typing import Any, Union
+
+from jose import jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def create_access_token(subject: Union[str, Any], expires_delta: timedelta = None) -> str:
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(
+            minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES
+        )
+    to_encode = {"exp": expire, "sub": str(subject)}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)

app/crud/__init__.py

@@ -0,0 +1,3 @@
+# flake8: noqa
+from app.crud.crud_user import user
+from app.crud.crud_task import task

app/crud/base.py

@@ -0,0 +1,65 @@
+from typing import Any, Dict, Generic, List, Optional, Type, TypeVar, Union
+from uuid import uuid4
+
+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) -> Optional[ModelType]:
+        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]:
+        return db.query(self.model).offset(skip).limit(limit).all()
+
+    def create(self, db: Session, *, obj_in: CreateSchemaType, **kwargs) -> ModelType:
+        obj_in_data = jsonable_encoder(obj_in)
+        db_obj = self.model(**obj_in_data, **kwargs, id=str(uuid4()))
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self,
+        db: Session,
+        *,
+        db_obj: ModelType,
+        obj_in: Union[UpdateSchemaType, Dict[str, Any]]
+    ) -> ModelType:
+        obj_data = jsonable_encoder(db_obj)
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.model_dump(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: Any) -> ModelType:
+        obj = db.query(self.model).get(id)
+        db.delete(obj)
+        db.commit()
+        return obj

app/crud/crud_task.py

@@ -0,0 +1,37 @@
+from typing import List
+
+from sqlalchemy.orm import Session
+
+from app.crud.base import CRUDBase
+from app.models.task import Task, TaskStatus
+from app.schemas.task import TaskCreate, TaskUpdate
+
+
+class CRUDTask(CRUDBase[Task, TaskCreate, TaskUpdate]):
+    def create_with_owner(self, db: Session, *, obj_in: TaskCreate, owner_id: str) -> Task:
+        return super().create(db, obj_in=obj_in, owner_id=owner_id)
+    
+    def get_multi_by_owner(
+        self, db: Session, *, owner_id: str, skip: int = 0, limit: int = 100
+    ) -> List[Task]:
+        return (
+            db.query(self.model)
+            .filter(Task.owner_id == owner_id)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+    
+    def get_by_status(
+        self, db: Session, *, owner_id: str, status: TaskStatus, skip: int = 0, limit: int = 100
+    ) -> List[Task]:
+        return (
+            db.query(self.model)
+            .filter(Task.owner_id == owner_id, Task.status == status)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+
+task = CRUDTask(Task)

app/crud/crud_user.py

@@ -0,0 +1,51 @@
+from typing import Any, Dict, Optional, Union
+
+from sqlalchemy.orm import Session
+
+from app.core.security import get_password_hash, verify_password
+from app.crud.base import CRUDBase
+from app.models.user import User
+from app.schemas.user import UserCreate, UserUpdate
+
+
+class CRUDUser(CRUDBase[User, UserCreate, UserUpdate]):
+    def get_by_email(self, db: Session, *, email: str) -> Optional[User]:
+        return db.query(User).filter(User.email == email).first()
+
+    def create(self, db: Session, *, obj_in: UserCreate) -> User:
+        db_obj = User(
+            email=obj_in.email,
+            hashed_password=get_password_hash(obj_in.password),
+            is_active=obj_in.is_active,
+        )
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+
+    def update(
+        self, db: Session, *, db_obj: User, obj_in: Union[UserUpdate, Dict[str, Any]]
+    ) -> User:
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.model_dump(exclude_unset=True)
+        if update_data.get("password"):
+            hashed_password = get_password_hash(update_data["password"])
+            del update_data["password"]
+            update_data["hashed_password"] = hashed_password
+        return super().update(db, db_obj=db_obj, obj_in=update_data)
+
+    def authenticate(self, db: Session, *, email: str, password: str) -> Optional[User]:
+        user = self.get_by_email(db, email=email)
+        if not user:
+            return None
+        if not verify_password(password, user.hashed_password):
+            return None
+        return user
+
+    def is_active(self, user: User) -> bool:
+        return user.is_active
+
+
+user = CRUDUser(User)

app/db/__init__.py

@@ -0,0 +1 @@
+# flake8: noqa

app/db/base.py

@@ -0,0 +1,5 @@
+# Import all the models, so that Base has them before being
+# imported by Alembic
+from app.db.base_class import Base  # noqa
+from app.models.user import User  # noqa
+from app.models.task import Task  # noqa

app/db/base_class.py

@@ -0,0 +1,13 @@
+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
+    def __tablename__(cls) -> str:
+        return cls.__name__.lower()

app/db/session.py

@@ -0,0 +1,10 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import settings
+
+engine = create_engine(
+    settings.SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False}
+)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

app/models/__init__.py

@@ -0,0 +1,3 @@
+# flake8: noqa
+from app.models.user import User
+from app.models.task import Task, TaskStatus, TaskPriority

app/models/task.py

@@ -0,0 +1,36 @@
+from sqlalchemy import Column, ForeignKey, String, Text, DateTime, Enum
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+import enum
+
+from app.db.base_class import Base
+
+
+class TaskPriority(str, enum.Enum):
+    LOW = "low"
+    MEDIUM = "medium"
+    HIGH = "high"
+
+
+class TaskStatus(str, enum.Enum):
+    TODO = "todo"
+    IN_PROGRESS = "in_progress"
+    DONE = "done"
+
+
+class Task(Base):
+    id = Column(String, primary_key=True, index=True)
+    title = Column(String, index=True, nullable=False)
+    description = Column(Text, nullable=True)
+    status = Column(Enum(TaskStatus), default=TaskStatus.TODO, nullable=False)
+    priority = Column(Enum(TaskPriority), default=TaskPriority.MEDIUM, nullable=False)
+    due_date = Column(DateTime, nullable=True)
+    completed_at = Column(DateTime, nullable=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+    
+    # Foreign keys
+    owner_id = Column(String, ForeignKey("user.id", ondelete="CASCADE"), nullable=False)
+    
+    # Relationships
+    owner = relationship("User", back_populates="tasks")

app/models/user.py

@@ -0,0 +1,17 @@
+from sqlalchemy import Boolean, Column, String, DateTime
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.base_class import Base
+
+
+class User(Base):
+    id = Column(String, primary_key=True, index=True)
+    email = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    is_active = Column(Boolean(), default=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+    
+    # Relationships
+    tasks = relationship("Task", back_populates="owner", cascade="all, delete-orphan")

app/schemas/__init__.py

@@ -0,0 +1,4 @@
+# flake8: noqa
+from app.schemas.token import Token, TokenPayload
+from app.schemas.user import User, UserCreate, UserInDB, UserUpdate
+from app.schemas.task import Task, TaskCreate, TaskInDB, TaskUpdate

app/schemas/task.py

@@ -0,0 +1,44 @@
+from datetime import datetime
+from typing import Optional
+from pydantic import BaseModel, Field, ConfigDict
+
+from app.models.task import TaskPriority, TaskStatus
+
+# Shared properties
+class TaskBase(BaseModel):
+    title: str = Field(..., min_length=1, max_length=100)
+    description: Optional[str] = None
+    status: TaskStatus = TaskStatus.TODO
+    priority: TaskPriority = TaskPriority.MEDIUM
+    due_date: Optional[datetime] = None
+
+# Properties to receive on task creation
+class TaskCreate(TaskBase):
+    pass
+
+# Properties to receive on task update
+class TaskUpdate(BaseModel):
+    title: Optional[str] = Field(None, min_length=1, max_length=100)
+    description: Optional[str] = None
+    status: Optional[TaskStatus] = None
+    priority: Optional[TaskPriority] = None
+    due_date: Optional[datetime] = None
+    completed_at: Optional[datetime] = None
+
+# Properties shared by models stored in DB
+class TaskInDBBase(TaskBase):
+    id: str
+    owner_id: str
+    created_at: datetime
+    updated_at: datetime
+    completed_at: Optional[datetime] = None
+    
+    model_config = ConfigDict(from_attributes=True)
+
+# Properties to return to client
+class Task(TaskInDBBase):
+    pass
+
+# Properties stored in DB
+class TaskInDB(TaskInDBBase):
+    pass

app/schemas/token.py

@@ -0,0 +1,12 @@
+from typing import Optional
+
+from pydantic import BaseModel
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+
+class TokenPayload(BaseModel):
+    sub: Optional[str] = None

app/schemas/user.py

@@ -0,0 +1,34 @@
+from datetime import datetime
+from typing import Optional
+from pydantic import BaseModel, EmailStr, Field, ConfigDict
+
+# Shared properties
+class UserBase(BaseModel):
+    email: EmailStr
+    is_active: bool = True
+
+# Properties to receive on user creation
+class UserCreate(UserBase):
+    password: str = Field(..., min_length=8)
+
+# Properties to receive on user update
+class UserUpdate(BaseModel):
+    email: Optional[EmailStr] = None
+    password: Optional[str] = Field(None, min_length=8)
+    is_active: Optional[bool] = None
+
+# Properties shared by models stored in DB
+class UserInDBBase(UserBase):
+    id: str
+    created_at: datetime
+    updated_at: datetime
+    
+    model_config = ConfigDict(from_attributes=True)
+
+# Properties to return to client
+class User(UserInDBBase):
+    pass
+
+# Properties stored in DB
+class UserInDB(UserInDBBase):
+    hashed_password: str

main.py

@@ -0,0 +1,41 @@
+import uvicorn
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.api.api_v1.api import api_router
+from app.core.config import settings
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    description=settings.PROJECT_DESCRIPTION,
+    openapi_url="/openapi.json",
+)
+
+# Set up CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # Allow all origins
+    allow_credentials=True,
+    allow_methods=["*"],  # Allow all methods
+    allow_headers=["*"],  # Allow all headers
+)
+
+# Include API router
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+
+@app.get("/", tags=["Root"])
+async def root():
+    return {
+        "title": settings.PROJECT_NAME,
+        "docs": "/docs",
+        "health": "/health"
+    }
+
+
+@app.get("/health", tags=["Health"])
+async def health_check():
+    return {"status": "healthy"}
+
+
+if __name__ == "__main__":
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)

migrations/README

@@ -0,0 +1,23 @@
+# Alembic Migrations
+
+This directory contains database migration files for the Task Manager API.
+
+## Usage
+
+To apply migrations:
+
+```bash
+alembic upgrade head
+```
+
+To generate a new migration:
+
+```bash
+alembic revision --autogenerate -m "description of changes"
+```
+
+To downgrade to a specific version:
+
+```bash
+alembic downgrade <revision>
+```

migrations/env.py

@@ -0,0 +1,85 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# 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 myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+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"},
+        render_as_batch=True,  # Important for SQLite migrations
+    )
+
+    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,  # Important for SQLite migrations
+        )
+
+        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/initial_migration.py

@@ -0,0 +1,76 @@
+"""Initial migration
+
+Revision ID: 01_initial
+Revises: 
+Create Date: 2023-07-16 00:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import enum
+
+
+# revision identifiers, used by Alembic.
+revision: str = '01_initial'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+# Create Enum types
+class TaskStatusEnum(enum.Enum):
+    TODO = "todo"
+    IN_PROGRESS = "in_progress"
+    DONE = "done"
+
+
+class TaskPriorityEnum(enum.Enum):
+    LOW = "low"
+    MEDIUM = "medium"
+    HIGH = "high"
+
+
+def upgrade() -> None:
+    # Create user table
+    op.create_table(
+        'user',
+        sa.Column('id', sa.String(), nullable=False),
+        sa.Column('email', sa.String(), nullable=False),
+        sa.Column('hashed_password', sa.String(), nullable=False),
+        sa.Column('is_active', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_user_email'), 'user', ['email'], unique=True)
+    op.create_index(op.f('ix_user_id'), 'user', ['id'], unique=False)
+
+    # Create task table
+    op.create_table(
+        'task',
+        sa.Column('id', sa.String(), nullable=False),
+        sa.Column('title', sa.String(), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('status', sa.Enum('todo', 'in_progress', 'done', name='taskstatus'), nullable=False),
+        sa.Column('priority', sa.Enum('low', 'medium', 'high', name='taskpriority'), nullable=False),
+        sa.Column('due_date', sa.DateTime(), nullable=True),
+        sa.Column('completed_at', sa.DateTime(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+        sa.Column('owner_id', sa.String(), nullable=False),
+        sa.ForeignKeyConstraint(['owner_id'], ['user.id'], ondelete='CASCADE'),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_task_id'), 'task', ['id'], unique=False)
+    op.create_index(op.f('ix_task_title'), 'task', ['title'], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index(op.f('ix_task_title'), table_name='task')
+    op.drop_index(op.f('ix_task_id'), table_name='task')
+    op.drop_table('task')
+    op.drop_index(op.f('ix_user_id'), table_name='user')
+    op.drop_index(op.f('ix_user_email'), table_name='user')
+    op.drop_table('user')

requirements.txt

@@ -0,0 +1,11 @@
+fastapi>=0.100.0,<0.101.0
+uvicorn>=0.23.0,<0.24.0
+pydantic>=2.0.0,<3.0.0
+pydantic-settings>=2.0.0,<3.0.0
+python-multipart>=0.0.6,<0.1.0
+python-jose[cryptography]>=3.3.0,<4.0.0
+passlib[bcrypt]>=1.7.4,<2.0.0
+sqlalchemy>=2.0.0,<3.0.0
+alembic>=1.11.0,<2.0.0
+python-dotenv>=1.0.0,<2.0.0
+ruff>=0.1.0,<0.2.0