Implement user authentication flow

- Setup project structure with FastAPI
- Create user models with SQLAlchemy
- Implement JWT authentication
- Create auth endpoints (register, login, me)
- Add health endpoint
- Generate Alembic migrations
- Update documentation

Generated with BackendIM... (backend.im)

README.md

@@ -1,3 +1,102 @@
-# FastAPI Application
+# User Authentication Flow Service
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A FastAPI service that provides a complete user authentication flow with JWT tokens.
+
+## Features
+
+- User registration with email and username
+- User login with JWT token generation
+- Password hashing with bcrypt
+- Authentication middleware and dependencies
+- User data retrieval
+- Health check endpoint
+- SQLite database with SQLAlchemy ORM
+
+## Project Structure
+
+```
+.
+├── app/
+│   ├── api/
+│   │   ├── deps.py         # Dependency injection
+│   │   ├── endpoints/      # API endpoints
+│   │   └── api.py          # API router
+│   ├── core/
+│   │   ├── config.py       # Application configuration
+│   │   └── security.py     # Security utilities
+│   ├── db/
+│   │   └── session.py      # Database session
+│   ├── models/
+│   │   └── user.py         # SQLAlchemy models
+│   ├── schemas/
+│   │   ├── auth.py         # Auth-related schemas
+│   │   ├── token.py        # Token schemas
+│   │   └── user.py         # User schemas
+│   └── services/
+│       └── user.py         # User service
+├── migrations/             # Alembic migrations
+├── storage/
+│   └── db/                 # SQLite database
+├── alembic.ini             # Alembic configuration
+├── main.py                 # Application entry point
+└── requirements.txt        # Python dependencies
+```
+
+## Getting Started
+
+### Prerequisites
+
+- Python 3.8 or higher
+
+### Installation
+
+1. Clone the repository:
+```bash
+git clone <repository-url>
+cd userauthenticationflowservice
+```
+
+2. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+3. Run database migrations:
+```bash
+alembic upgrade head
+```
+
+4. Start the server:
+```bash
+uvicorn main:app --reload
+```
+
+The API will be available at http://localhost:8000.
+
+API documentation is available 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
+- **GET /api/v1/auth/me** - Get current user information (requires authentication)
+
+### Health Check
+
+- **GET /health** - Check application health status
+
+## Environment Variables
+
+The application uses environment variables for configuration. These can be set in a `.env` file:
+
+- `SECRET_KEY` - Secret key for JWT token generation
+- `ACCESS_TOKEN_EXPIRE_MINUTES` - Token expiration time in minutes
+- `DEBUG` - Debug mode (true/false)
+
+## License
+
+This project is licensed under the MIT License.

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
+
+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.py

@@ -0,0 +1,28 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.core.config import settings
+from app.api.endpoints import auth, health
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    version=settings.VERSION,
+    description=settings.DESCRIPTION,
+    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# Set CORS middleware
+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=["*"],
+    )
+
+# Include routers
+app.include_router(auth.router, prefix=settings.API_V1_STR, tags=["auth"])
+app.include_router(health.router, tags=["health"])

app/api/deps.py

@@ -0,0 +1,105 @@
+from typing import Generator, Optional
+
+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.core.config import settings
+from app.core.security import (
+    create_access_token,
+    get_password_hash,
+    verify_password,
+)
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.token import TokenPayload
+from app.services import user as user_service
+
+reusable_oauth2 = OAuth2PasswordBearer(
+    tokenUrl=f"{settings.API_V1_STR}/auth/login"
+)
+
+
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(reusable_oauth2)
+) -> User:
+    """
+    Get the current user based on JWT token.
+    
+    Args:
+        db: Database session
+        token: JWT token from OAuth2 dependency
+        
+    Returns:
+        User: Current user model
+        
+    Raises:
+        HTTPException: If token is invalid or user doesn't exist
+    """
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=["HS256"]
+        )
+        token_data = TokenPayload(**payload)
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+        
+    user = user_service.get_by_id(db, id=token_data.sub)
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND, 
+            detail="User not found"
+        )
+    return user
+
+
+def get_current_active_user(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    """
+    Get current active user (inactive users cannot use the system).
+    
+    Args:
+        current_user: Current user from get_current_user dependency
+        
+    Returns:
+        User: Current active user
+        
+    Raises:
+        HTTPException: If user is inactive
+    """
+    if not user_service.is_active(current_user):
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST, 
+            detail="Inactive user"
+        )
+    return current_user
+
+
+def get_current_active_superuser(
+    current_user: User = Depends(get_current_active_user),
+) -> User:
+    """
+    Get current active superuser.
+    
+    Args:
+        current_user: Current active user from get_current_active_user dependency
+        
+    Returns:
+        User: Current active superuser
+        
+    Raises:
+        HTTPException: If user is not a superuser
+    """
+    if not user_service.is_superuser(current_user):
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN, 
+            detail="Not enough permissions"
+        )
+    return current_user

app/api/endpoints/auth.py

@@ -0,0 +1,89 @@
+from datetime import timedelta
+from typing import Any
+
+from fastapi import APIRouter, Body, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_current_active_user
+from app.core.config import settings
+from app.core.security import create_access_token
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.auth import TokenResponse
+from app.schemas.user import User as UserSchema, UserCreate
+from app.services import user as user_service
+
+router = APIRouter()
+
+
+@router.post("/auth/register", response_model=UserSchema)
+def register(
+    *,
+    db: Session = Depends(get_db),
+    user_in: UserCreate,
+) -> Any:
+    """
+    Register a new user.
+    """
+    # Check if user with this email already exists
+    user = user_service.get_by_email(db, email=user_in.email)
+    if user:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Email already registered",
+        )
+    
+    # Check if user with this username already exists
+    user = user_service.get_by_username(db, username=user_in.username)
+    if user:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Username already taken",
+        )
+    
+    # Create new user
+    user = user_service.create(db, obj_in=user_in)
+    return user
+
+
+@router.post("/auth/login", response_model=TokenResponse)
+def login(
+    db: Session = Depends(get_db),
+    form_data: OAuth2PasswordRequestForm = Depends(),
+) -> Any:
+    """
+    OAuth2 compatible token login, get an access token for future requests.
+    """
+    user = user_service.authenticate(
+        db, username=form_data.username, password=form_data.password
+    )
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect username or password",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    if not user_service.is_active(user):
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST, 
+            detail="Inactive user"
+        )
+    
+    access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    return {
+        "access_token": create_access_token(
+            user.id, expires_delta=access_token_expires
+        ),
+        "token_type": "bearer",
+    }
+
+
+@router.get("/auth/me", response_model=UserSchema)
+def read_current_user(
+    current_user: User = Depends(get_current_active_user),
+) -> Any:
+    """
+    Get current user information.
+    """
+    return current_user

app/api/endpoints/health.py

@@ -0,0 +1,27 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+
+from app.db.session import get_db
+
+router = APIRouter()
+
+
+@router.get("/health")
+def health_check(db: Session = Depends(get_db)):
+    """
+    Health check endpoint.
+    Returns:
+        dict: Status indicating the health of the application and its dependencies
+    """
+    # Check database connection
+    try:
+        # Execute a simple query to check DB connection
+        db.execute("SELECT 1")
+        db_status = "healthy"
+    except Exception as e:
+        db_status = f"unhealthy: {str(e)}"
+
+    return {
+        "status": "up",
+        "database": db_status,
+    }

app/core/config.py

@@ -0,0 +1,44 @@
+import secrets
+from typing import Any, Dict, List, Optional, Union
+from pydantic import AnyHttpUrl, EmailStr, HttpUrl, validator
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    PROJECT_NAME: str = "User Authentication Flow Service"
+    DESCRIPTION: str = "A service for user authentication flow"
+    VERSION: str = "0.1.0"
+    API_V1_STR: str = "/api/v1"
+    
+    # Secret key for JWT
+    SECRET_KEY: str = secrets.token_urlsafe(32)
+    # 60 minutes * 24 hours * 8 days = 8 days
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24 * 8
+    
+    # CORS settings
+    BACKEND_CORS_ORIGINS: List[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)
+    
+    # Debug mode
+    DEBUG: bool = True
+
+    # Database settings
+    DB_PATH: str = "/app/storage/db/db.sqlite"
+    SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_PATH}"
+    
+    # First superuser
+    FIRST_SUPERUSER: EmailStr = "admin@example.com"
+    FIRST_SUPERUSER_PASSWORD: str = "admin"
+
+    class Config:
+        case_sensitive = True
+
+
+settings = Settings()

app/core/security.py

@@ -0,0 +1,61 @@
+from datetime import datetime, timedelta
+from typing import Any, Optional, 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: Optional[timedelta] = None
+) -> str:
+    """
+    Create a JWT access token for the given subject (user id).
+    
+    Args:
+        subject: The subject (user id) for whom the token is being created.
+        expires_delta: Optional timedelta for token expiration. If not provided, uses settings.
+
+    Returns:
+        str: Encoded JWT token
+    """
+    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="HS256")
+    return encoded_jwt
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """
+    Verify a plaintext password against its hash.
+    
+    Args:
+        plain_password: The plaintext password
+        hashed_password: The hashed password to check against
+        
+    Returns:
+        bool: True if the password matches, False otherwise
+    """
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """
+    Hash a password with bcrypt.
+    
+    Args:
+        password: The plaintext password to hash
+        
+    Returns:
+        str: The hashed password
+    """
+    return pwd_context.hash(password)

app/db/session.py

@@ -0,0 +1,28 @@
+from pathlib import Path
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import settings
+
+# Ensure db directory exists
+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)
+
+Base = declarative_base()
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/models/user.py

@@ -0,0 +1,20 @@
+from datetime import datetime
+from sqlalchemy import Boolean, Column, DateTime, Integer, String
+from sqlalchemy.orm import relationship
+
+from app.db.session import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    email = Column(String, unique=True, index=True, nullable=False)
+    username = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    first_name = Column(String, nullable=True)
+    last_name = Column(String, nullable=True)
+    is_active = Column(Boolean, default=True)
+    is_superuser = Column(Boolean, default=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

app/schemas/auth.py

@@ -0,0 +1,17 @@
+from typing import Optional
+
+from pydantic import BaseModel, EmailStr
+
+
+class Login(BaseModel):
+    username: str
+    password: str
+
+
+class TokenResponse(BaseModel):
+    access_token: str
+    token_type: str = "bearer"
+
+
+class RefreshToken(BaseModel):
+    refresh_token: str

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[int] = None

app/schemas/user.py

@@ -0,0 +1,46 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, EmailStr, Field
+
+
+# Shared properties
+class UserBase(BaseModel):
+    email: Optional[EmailStr] = None
+    username: Optional[str] = None
+    is_active: Optional[bool] = True
+    is_superuser: bool = False
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+
+
+# Properties to receive via API on creation
+class UserCreate(UserBase):
+    email: EmailStr
+    username: str
+    password: str
+
+
+# Properties to receive via API on update
+class UserUpdate(UserBase):
+    password: Optional[str] = None
+
+
+# Properties shared by models stored in DB
+class UserInDBBase(UserBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        orm_mode = True
+
+
+# Additional properties to return via API
+class User(UserInDBBase):
+    pass
+
+
+# Additional properties stored in DB
+class UserInDB(UserInDBBase):
+    hashed_password: str

app/services/user.py

@@ -0,0 +1,75 @@
+from typing import Optional
+
+from sqlalchemy.orm import Session
+
+from app.core.security import get_password_hash, verify_password
+from app.models.user import User
+from app.schemas.user import UserCreate, UserUpdate
+
+
+def get_by_email(db: Session, email: str) -> Optional[User]:
+    """Get a user by email."""
+    return db.query(User).filter(User.email == email).first()
+
+
+def get_by_username(db: Session, username: str) -> Optional[User]:
+    """Get a user by username."""
+    return db.query(User).filter(User.username == username).first()
+
+
+def get_by_id(db: Session, id: int) -> Optional[User]:
+    """Get a user by ID."""
+    return db.query(User).filter(User.id == id).first()
+
+
+def create(db: Session, obj_in: UserCreate) -> User:
+    """Create a new user."""
+    db_obj = User(
+        email=obj_in.email,
+        username=obj_in.username,
+        hashed_password=get_password_hash(obj_in.password),
+        first_name=obj_in.first_name,
+        last_name=obj_in.last_name,
+        is_superuser=obj_in.is_superuser,
+    )
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def update(db: Session, db_obj: User, obj_in: UserUpdate) -> User:
+    """Update user properties."""
+    update_data = obj_in.dict(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
+    
+    for field, value in update_data.items():
+        setattr(db_obj, field, value)
+    
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    return db_obj
+
+
+def authenticate(db: Session, username: str, password: str) -> Optional[User]:
+    """Authenticate a user by username and password."""
+    user = get_by_username(db, username)
+    if not user:
+        return None
+    if not verify_password(password, user.hashed_password):
+        return None
+    return user
+
+
+def is_active(user: User) -> bool:
+    """Check if user is active."""
+    return user.is_active
+
+
+def is_superuser(user: User) -> bool:
+    """Check if user is superuser."""
+    return user.is_superuser

main.py

@@ -0,0 +1,11 @@
+import uvicorn
+from app.core.config import settings
+from app.api.api import app
+
+if __name__ == "__main__":
+    uvicorn.run(
+        "main:app", 
+        host="0.0.0.0", 
+        port=8000, 
+        reload=settings.DEBUG
+    )

migrations/env.py

@@ -0,0 +1,78 @@
+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.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+from app.db.session import Base
+from app.models.user import User  # Import all models here for Alembic to detect
+
+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():
+    """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():
+    """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:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        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():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

migrations/versions/20250512_initial_migration.py

@@ -0,0 +1,44 @@
+"""initial migration
+
+Revision ID: 20250512
+Revises: 
+Create Date: 2025-05-12
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '20250512'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Create users table
+    op.create_table(
+        'users',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('email', sa.String(), nullable=False),
+        sa.Column('username', sa.String(), nullable=False),
+        sa.Column('hashed_password', sa.String(), nullable=False),
+        sa.Column('first_name', sa.String(), nullable=True),
+        sa.Column('last_name', sa.String(), nullable=True),
+        sa.Column('is_active', sa.Boolean(), default=True),
+        sa.Column('is_superuser', sa.Boolean(), default=False),
+        sa.Column('created_at', sa.DateTime(), default=sa.func.now()),
+        sa.Column('updated_at', sa.DateTime(), default=sa.func.now(), onupdate=sa.func.now()),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
+    op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
+    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)
+
+
+def downgrade():
+    op.drop_index(op.f('ix_users_username'), table_name='users')
+    op.drop_index(op.f('ix_users_id'), table_name='users')
+    op.drop_index(op.f('ix_users_email'), table_name='users')
+    op.drop_table('users')

requirements.txt

@@ -0,0 +1,10 @@
+fastapi==0.104.1
+uvicorn==0.23.2
+pydantic==2.4.2
+sqlalchemy==2.0.22
+passlib==1.7.4
+python-jose==3.3.0
+python-multipart==0.0.6
+alembic==1.12.1
+bcrypt==4.0.1
+email-validator==2.0.0