Implement Task Management API with FastAPI and SQLite

- Set up project structure and dependencies
- Create database models and schemas for tasks
- Implement CRUD operations for tasks
- Add API endpoints for task management
- Create Alembic migrations for the database
- Add health check endpoint
- Implement error handling
- Add documentation in README.md

README.md

@@ -1,3 +1,105 @@
-# FastAPI Application
+# Task Management API
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A simple task management API built with FastAPI and SQLite.
+
+## Features
+
+- Create, read, update, and delete tasks
+- Filter tasks by status
+- Mark tasks as completed
+- Set task priorities
+- Health check endpoint
+
+## Tech Stack
+
+- **FastAPI**: Modern, fast web framework for building APIs
+- **SQLAlchemy**: SQL toolkit and ORM
+- **Alembic**: Database migration tool
+- **SQLite**: Lightweight, file-based database
+- **Pydantic**: Data validation and settings management
+- **Uvicorn**: ASGI server for FastAPI
+
+## Setup and Installation
+
+### Prerequisites
+
+- Python 3.9+
+
+### Installation
+
+1. Clone the repository:
+
+```bash
+git clone <repository-url>
+cd <repository-directory>
+```
+
+2. Create a virtual environment and activate it:
+
+```bash
+python -m venv venv
+source venv/bin/activate  # On Windows, use: venv\Scripts\activate
+```
+
+3. Install dependencies:
+
+```bash
+pip install -r requirements.txt
+```
+
+4. Run database migrations:
+
+```bash
+alembic upgrade head
+```
+
+### Running the Application
+
+Start the application with Uvicorn:
+
+```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 application is running, you can access:
+
+- Interactive API documentation: http://localhost:8000/docs
+- Alternative API documentation: http://localhost:8000/redoc
+
+## API Endpoints
+
+### Health Check
+
+- `GET /api/v1/health`: Check API and database health
+
+### Tasks
+
+- `GET /api/v1/tasks`: Get all tasks
+- `POST /api/v1/tasks`: Create a new task
+- `GET /api/v1/tasks/{id}`: Get a specific task
+- `PUT /api/v1/tasks/{id}`: Update a task
+- `DELETE /api/v1/tasks/{id}`: Delete (soft delete) a task
+
+## Task Structure
+
+A task has the following structure:
+
+```json
+{
+  "id": 1,
+  "title": "Sample Task",
+  "description": "This is a sample task",
+  "status": "todo",
+  "priority": "medium",
+  "due_date": "2023-12-31T23:59:59",
+  "created_at": "2023-09-27T10:00:00",
+  "updated_at": "2023-09-27T10:00:00"
+}
+```
+
+- `status` can be: "todo", "in_progress", or "done"
+- `priority` can be: "low", "medium", or "high"

alembic.ini

@@ -0,0 +1,85 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = migrations
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# timezone to use when rendering the date
+# within the migration file as well as the filename.
+# 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
+# version_locations = %(here)s/bar %(here)s/bat migrations/versions
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+# SQLite URL with 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
+
+# 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/api_v1/api.py

@@ -0,0 +1,7 @@
+from fastapi import APIRouter
+
+from app.api.api_v1.endpoints import health, tasks
+
+api_router = APIRouter()
+api_router.include_router(tasks.router, prefix="/tasks", tags=["tasks"])
+api_router.include_router(health.router, prefix="/health", tags=["health"])

app/api/api_v1/endpoints/health.py

@@ -0,0 +1,31 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app.core.database import get_db
+
+router = APIRouter()
+
+
+@router.get("/", tags=["Health"])
+async def health_check(db: Session = Depends(get_db)):
+    """
+    Health check endpoint.
+
+    Verifies:
+    - API is running
+    - Database connection is working
+    """
+    try:
+        # Test database connection
+        db.execute("SELECT 1")
+
+        return {
+            "status": "healthy",
+            "api": "up",
+            "database": "up",
+        }
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+            detail=f"Service unhealthy: {str(e)}",
+        ) from e

app/api/api_v1/endpoints/tasks.py

@@ -0,0 +1,114 @@
+from typing import List, Optional
+
+from fastapi import APIRouter, Depends, status
+from sqlalchemy.orm import Session
+
+from app.core.database import get_db
+from app.core.exceptions import InvalidTaskData, TaskNotFound
+from app.crud.task import task
+from app.models.task import TaskStatus
+from app.schemas.task import Task, TaskCreate, TaskUpdate
+
+router = APIRouter()
+
+
+@router.get("/", response_model=List[Task])
+def read_tasks(
+    db: Session = Depends(get_db),
+    skip: int = 0,
+    limit: int = 100,
+    status: Optional[TaskStatus] = None,
+):
+    """
+    Retrieve tasks.
+
+    - **skip**: Number of tasks to skip
+    - **limit**: Maximum number of tasks to return
+    - **status**: Filter tasks by status
+    """
+    if status:
+        return task.get_multi_by_status(db, status=status, skip=skip, limit=limit)
+    return task.get_multi(db, skip=skip, limit=limit)
+
+
+@router.post("/", response_model=Task, status_code=status.HTTP_201_CREATED)
+def create_task(
+    *,
+    db: Session = Depends(get_db),
+    task_in: TaskCreate,
+):
+    """
+    Create new task.
+
+    - **title**: Title of the task (required)
+    - **description**: Description of the task (optional)
+    - **status**: Status of the task (default: todo)
+    - **priority**: Priority of the task (default: medium)
+    - **due_date**: Due date of the task (optional)
+    """
+    try:
+        return task.create(db=db, obj_in=task_in)
+    except Exception as e:
+        raise InvalidTaskData(detail=f"Could not create task: {str(e)}") from e
+
+
+@router.get("/{id}", response_model=Task)
+def read_task(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+):
+    """
+    Get task by ID.
+
+    - **id**: ID of the task
+    """
+    task_obj = task.get(db=db, id=id)
+    if not task_obj:
+        raise TaskNotFound(task_id=id)
+    return task_obj
+
+
+@router.put("/{id}", response_model=Task)
+def update_task(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+    task_in: TaskUpdate,
+):
+    """
+    Update a task.
+
+    - **id**: ID of the task
+    - **title**: New title (optional)
+    - **description**: New description (optional)
+    - **status**: New status (optional)
+    - **priority**: New priority (optional)
+    - **due_date**: New due date (optional)
+    """
+    task_obj = task.get(db=db, id=id)
+    if not task_obj:
+        raise TaskNotFound(task_id=id)
+
+    try:
+        return task.update(db=db, db_obj=task_obj, obj_in=task_in)
+    except Exception as e:
+        raise InvalidTaskData(detail=f"Could not update task: {str(e)}") from e
+
+
+@router.delete("/{id}", response_model=Task)
+def delete_task(
+    *,
+    db: Session = Depends(get_db),
+    id: int,
+):
+    """
+    Delete a task.
+
+    - **id**: ID of the task
+    """
+    task_obj = task.get(db=db, id=id)
+    if not task_obj:
+        raise TaskNotFound(task_id=id)
+
+    return task.remove(db=db, id=id)

app/core/config.py

@@ -0,0 +1,33 @@
+from pathlib import Path
+from typing import List, Union
+
+from pydantic import AnyHttpUrl, validator
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    API_V1_STR: str = "/api/v1"
+    PROJECT_NAME: str = "Task Management API"
+
+    # CORS Configuration
+    BACKEND_CORS_ORIGINS: List[Union[str, AnyHttpUrl]] = []
+
+    @validator("BACKEND_CORS_ORIGINS", pre=True)
+    def assemble_cors_origins(cls, v: Union[str, List[str]]) -> Union[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)
+
+    # Database Configuration
+    DB_DIR: Path = Path("/app") / "storage" / "db"
+
+    class Config:
+        case_sensitive = True
+
+
+settings = Settings()
+
+# Create database directory
+settings.DB_DIR.mkdir(parents=True, exist_ok=True)

app/core/database.py

@@ -0,0 +1,25 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import settings
+
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{settings.DB_DIR}/db.sqlite"
+
+engine = create_engine(
+    SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False}
+)
+
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+
+def get_db():
+    """Get SQLAlchemy database session."""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/core/error_handlers.py

@@ -0,0 +1,33 @@
+from fastapi import FastAPI, Request, status
+from fastapi.responses import JSONResponse
+from sqlalchemy.exc import SQLAlchemyError
+
+from app.core.exceptions import TaskException
+
+
+def add_exception_handlers(app: FastAPI) -> None:
+    """Add global exception handlers to the FastAPI app."""
+
+    @app.exception_handler(TaskException)
+    async def task_exception_handler(request: Request, exc: TaskException):
+        """Handle Task API exceptions."""
+        return JSONResponse(
+            status_code=exc.status_code,
+            content={"detail": exc.detail},
+        )
+
+    @app.exception_handler(SQLAlchemyError)
+    async def sqlalchemy_exception_handler(request: Request, exc: SQLAlchemyError):
+        """Handle SQLAlchemy exceptions."""
+        return JSONResponse(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            content={"detail": "Database error occurred"},
+        )
+
+    @app.exception_handler(Exception)
+    async def general_exception_handler(request: Request, exc: Exception):
+        """Handle general exceptions."""
+        return JSONResponse(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            content={"detail": "An unexpected error occurred"},
+        )

app/core/exceptions.py

@@ -0,0 +1,45 @@
+from typing import Any, Dict, Optional
+
+from fastapi import HTTPException, status
+
+
+class TaskException(HTTPException):
+    """Base Task API exception."""
+
+    def __init__(
+        self,
+        status_code: int,
+        detail: Any = None,
+        headers: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        super().__init__(status_code=status_code, detail=detail, headers=headers)
+
+
+class TaskNotFound(TaskException):
+    """Exception raised when a task is not found."""
+
+    def __init__(
+        self,
+        task_id: int,
+        headers: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"Task with ID {task_id} not found",
+            headers=headers,
+        )
+
+
+class InvalidTaskData(TaskException):
+    """Exception raised when task data is invalid."""
+
+    def __init__(
+        self,
+        detail: str = "Invalid task data",
+        headers: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=detail,
+            headers=headers,
+        )

app/crud/base.py

@@ -0,0 +1,112 @@
+from typing import Any, Dict, Generic, List, Optional, Type, TypeVar, Union
+
+from fastapi.encoders import jsonable_encoder
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.core.database import Base
+
+ModelType = TypeVar("ModelType", bound=Base)
+CreateSchemaType = TypeVar("CreateSchemaType", bound=BaseModel)
+UpdateSchemaType = TypeVar("UpdateSchemaType", bound=BaseModel)
+
+
+class CRUDBase(Generic[ModelType, CreateSchemaType, UpdateSchemaType]):
+    """Base class for CRUD operations."""
+
+    def __init__(self, model: Type[ModelType]):
+        """Initialize with sqlalchemy model.
+
+        Args:
+            model: The SQLAlchemy model
+        """
+        self.model = model
+
+    def get(self, db: Session, id: Any) -> Optional[ModelType]:
+        """Get a record by ID.
+
+        Args:
+            db: Database session
+            id: ID of the record to get
+
+        Returns:
+            The record if found, None otherwise
+        """
+        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.
+
+        Args:
+            db: Database session
+            skip: Number of records to skip
+            limit: Maximum number of records to return
+
+        Returns:
+            List of records
+        """
+        return db.query(self.model).offset(skip).limit(limit).all()
+
+    def create(self, db: Session, *, obj_in: CreateSchemaType) -> ModelType:
+        """Create a new record.
+
+        Args:
+            db: Database session
+            obj_in: Schema with data to create
+
+        Returns:
+            The created 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: Union[UpdateSchemaType, Dict[str, Any]]
+    ) -> ModelType:
+        """Update a record.
+
+        Args:
+            db: Database session
+            db_obj: The database object to update
+            obj_in: Schema with data to update
+
+        Returns:
+            The updated record
+        """
+        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: int) -> ModelType:
+        """Remove a record.
+
+        Args:
+            db: Database session
+            id: ID of the record to remove
+
+        Returns:
+            The removed record
+        """
+        obj = db.query(self.model).get(id)
+        db.delete(obj)
+        db.commit()
+        return obj

app/crud/task.py

@@ -0,0 +1,91 @@
+from typing import List, Optional
+
+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]):
+    """CRUD operations for tasks."""
+
+    def get_multi_by_status(
+        self, db: Session, *, status: TaskStatus, skip: int = 0, limit: int = 100
+    ) -> List[Task]:
+        """Get multiple tasks by status.
+
+        Args:
+            db: Database session
+            status: Task status
+            skip: Number of records to skip
+            limit: Maximum number of records to return
+
+        Returns:
+            List of tasks with specified status
+        """
+        return (
+            db.query(self.model)
+            .filter(self.model.status == status, not self.model.is_deleted)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+    def get_multi(
+        self, db: Session, *, skip: int = 0, limit: int = 100
+    ) -> List[Task]:
+        """Get multiple tasks, excluding deleted ones.
+
+        Args:
+            db: Database session
+            skip: Number of records to skip
+            limit: Maximum number of records to return
+
+        Returns:
+            List of non-deleted tasks
+        """
+        return (
+            db.query(self.model)
+            .filter(not self.model.is_deleted)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+    def get(self, db: Session, id: int) -> Optional[Task]:
+        """Get a task by ID, excluding deleted ones.
+
+        Args:
+            db: Database session
+            id: Task ID
+
+        Returns:
+            The task if found and not deleted, None otherwise
+        """
+        return (
+            db.query(self.model)
+            .filter(self.model.id == id, not self.model.is_deleted)
+            .first()
+        )
+
+    def remove(self, db: Session, *, id: int) -> Task:
+        """Soft delete a task.
+
+        Args:
+            db: Database session
+            id: Task ID
+
+        Returns:
+            The soft deleted task
+        """
+        obj = db.query(self.model).get(id)
+        if obj:
+            obj.is_deleted = True
+            db.add(obj)
+            db.commit()
+            db.refresh(obj)
+        return obj
+
+
+task = CRUDTask(Task)

app/models/task.py

@@ -0,0 +1,34 @@
+from datetime import datetime
+from enum import Enum as PyEnum
+
+from sqlalchemy import Boolean, Column, DateTime, Enum, Integer, String, Text
+
+from app.core.database import Base
+
+
+class TaskStatus(str, PyEnum):
+    TODO = "todo"
+    IN_PROGRESS = "in_progress"
+    DONE = "done"
+
+
+class TaskPriority(str, PyEnum):
+    LOW = "low"
+    MEDIUM = "medium"
+    HIGH = "high"
+
+
+class Task(Base):
+    """Task model."""
+
+    __tablename__ = "tasks"
+
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String(255), nullable=False)
+    description = Column(Text, nullable=True)
+    status = Column(Enum(TaskStatus), default=TaskStatus.TODO)
+    priority = Column(Enum(TaskPriority), default=TaskPriority.MEDIUM)
+    due_date = Column(DateTime, nullable=True)
+    is_deleted = Column(Boolean, default=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

app/schemas/task.py

@@ -0,0 +1,49 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+from app.models.task import TaskPriority, TaskStatus
+
+
+class TaskBase(BaseModel):
+    """Base schema for Task."""
+
+    title: str = Field(..., min_length=1, max_length=255)
+    description: Optional[str] = None
+    status: TaskStatus = TaskStatus.TODO
+    priority: TaskPriority = TaskPriority.MEDIUM
+    due_date: Optional[datetime] = None
+
+
+class TaskCreate(TaskBase):
+    """Schema for creating a Task."""
+
+    pass
+
+
+class TaskUpdate(BaseModel):
+    """Schema for updating a Task."""
+
+    title: Optional[str] = Field(None, min_length=1, max_length=255)
+    description: Optional[str] = None
+    status: Optional[TaskStatus] = None
+    priority: Optional[TaskPriority] = None
+    due_date: Optional[datetime] = None
+
+
+class TaskInDBBase(TaskBase):
+    """Base schema for Task stored in DB."""
+
+    id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class Task(TaskInDBBase):
+    """Schema for Task output."""
+
+    pass

main.py

@@ -0,0 +1,43 @@
+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
+from app.core.error_handlers import add_exception_handlers
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    version="0.1.0",
+    description="A simple task management API with FastAPI and SQLite.",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# 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=["*"],
+    )
+
+# Add exception handlers
+add_exception_handlers(app)
+
+# Include API router
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+# Root endpoint redirects to docs
+@app.get("/", include_in_schema=False)
+async def root():
+    """Root endpoint redirects to docs."""
+    from fastapi.responses import RedirectResponse
+    return RedirectResponse(url="/docs")
+
+if __name__ == "__main__":
+    import uvicorn
+
+    uvicorn.run("main:app", host="0.0.0.0", port=8000, reload=True)

migrations/README

@@ -0,0 +1 @@
+Generic single-database configuration with SQLite.

migrations/env.py

@@ -0,0 +1,89 @@
+import sys
+from logging.config import fileConfig
+from pathlib import Path
+
+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 myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+
+# Add the project root directory to the Python path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from app.core.database import Base  # noqa
+from app.models.task import Task  # 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,  # Required for SQLite
+    )
+
+    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,  # Required for SQLite
+        )
+
+        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 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

migrations/versions/001_initial_migration.py

@@ -0,0 +1,48 @@
+"""Initial migration
+
+Revision ID: 001
+Revises:
+Create Date: 2023-09-27
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '001'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('tasks',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('title', sa.String(length=255), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column(
+            'status',
+            sa.Enum('todo', 'in_progress', 'done', name='taskstatus'),
+            nullable=True
+        ),
+        sa.Column(
+            'priority',
+            sa.Enum('low', 'medium', 'high', name='taskpriority'),
+            nullable=True
+        ),
+        sa.Column('due_date', sa.DateTime(), nullable=True),
+        sa.Column('is_deleted', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_tasks_id'), 'tasks', ['id'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_tasks_id'), table_name='tasks')
+    op.drop_table('tasks')
+    # ### end Alembic commands ###

pyproject.toml

@@ -0,0 +1,13 @@
+[tool.ruff]
+line-length = 88
+target-version = "py39"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "B", "W", "C90"]
+ignore = ["B008"]  # Allow function calls in argument defaults for FastAPI dependencies
+
+[tool.ruff.lint.isort]
+known-third-party = ["fastapi", "pydantic", "sqlalchemy", "alembic", "uvicorn"]
+
+[tool.ruff.lint.mccabe]
+max-complexity = 10

requirements.txt

@@ -0,0 +1,10 @@
+fastapi>=0.103.1
+pydantic>=2.4.0
+sqlalchemy>=2.0.21
+alembic>=1.12.0
+uvicorn>=0.23.2
+python-dotenv>=1.0.0
+ruff>=0.0.287
+pytest>=7.4.2
+httpx>=0.25.0
+pydantic-settings>=2.0.3