Implement user authentication system with FastAPI and SQLite

- Create user model and database connection
- Set up Alembic migrations
- Implement JWT token authentication
- Add routes for registration, login, refresh, and user profile
- Create health endpoint
- Configure CORS
- Update README with setup and usage instructions

README.md

@@ -1,3 +1,109 @@
-# FastAPI Application
+# User Authentication Service
 
-This is a FastAPI application bootstrapped by BackendIM, the AI-powered backend generation platform.
+A FastAPI service for user authentication with JWT tokens.
+
+## Features
+
+- User registration and login
+- JWT token-based authentication
+- Token refresh functionality
+- Password hashing with bcrypt
+- SQLite database with SQLAlchemy ORM
+- Alembic migrations
+- CORS support
+- Health endpoint
+
+## Prerequisites
+
+- Python 3.9+
+- pip (Python package manager)
+
+## Setup
+
+1. Clone the repository:
+
+```bash
+git clone <repository-url>
+cd userauthenticationservice-0fe432
+```
+
+2. Create and activate a virtual environment (optional but recommended):
+
+```bash
+python -m venv venv
+source venv/bin/activate  # On Windows: venv\Scripts\activate
+```
+
+3. Install dependencies:
+
+```bash
+pip install -r requirements.txt
+```
+
+4. Create a `.env` file based on the `.env.example`:
+
+```bash
+cp .env.example .env
+```
+
+5. Edit the `.env` file and set a secure secret key:
+
+```
+SECRET_KEY=your_secure_secret_key
+```
+
+6. Run database migrations:
+
+```bash
+alembic upgrade head
+```
+
+## Running the Service
+
+Start the service with:
+
+```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
+
+- `POST /api/v1/auth/register` - Register a new user
+- `POST /api/v1/auth/login` - Login and get access token
+- `POST /api/v1/auth/refresh` - Refresh access token
+- `GET /api/v1/auth/me` - Get current user information
+- `PUT /api/v1/auth/me` - Update current user information
+- `GET /health` - Health check endpoint
+
+## Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| SECRET_KEY | JWT signing key | supersecretkey |
+| ALGORITHM | JWT algorithm | HS256 |
+| ACCESS_TOKEN_EXPIRE_MINUTES | Access token lifetime in minutes | 30 |
+| REFRESH_TOKEN_EXPIRE_DAYS | Refresh token lifetime in days | 7 |
+| DATABASE_URL | SQLite database URL | sqlite:///app/storage/db/db.sqlite |
+
+## Authentication Flow
+
+1. Register a user with `POST /api/v1/auth/register`
+2. Login with `POST /api/v1/auth/login` to get access and refresh tokens
+3. Use the access token in the `Authorization` header for protected endpoints
+4. When the access token expires, use `POST /api/v1/auth/refresh` with the refresh token to get a new access token
+
+## Development
+
+This project uses:
+- FastAPI for the API framework
+- SQLAlchemy for ORM
+- Alembic for database migrations
+- Pydantic for data validation
+- python-jose for JWT handling
+- passlib and bcrypt for password hashing

alembic.ini

@@ -0,0 +1,105 @@
+# 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.
+
+# 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/v1/auth.py

@@ -0,0 +1,190 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app.auth import (
+    create_access_token,
+    create_refresh_token,
+    get_current_user,
+    get_password_hash,
+    verify_password,
+    verify_token
+)
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.token import Token, RefreshToken
+from app.schemas.user import User as UserSchema, UserCreate, UserUpdate
+
+router = APIRouter(prefix="/auth", tags=["Authentication"])
+
+
+@router.post("/register", response_model=UserSchema)
+async def register_user(
+    user_in: UserCreate,
+    db: Session = Depends(get_db)
+) -> Any:
+    """
+    Register a new user
+    """
+    # Check if user with given email already exists
+    user = db.query(User).filter(User.email == user_in.email).first()
+    if user:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="A user with this email already exists",
+        )
+    
+    # Check if user with given username already exists
+    user = db.query(User).filter(User.username == user_in.username).first()
+    if user:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="A user with this username already exists",
+        )
+    
+    # Create new user
+    hashed_password = get_password_hash(user_in.password)
+    db_user = User(
+        email=user_in.email,
+        username=user_in.username,
+        hashed_password=hashed_password,
+        first_name=user_in.first_name,
+        last_name=user_in.last_name,
+        is_active=user_in.is_active,
+    )
+    db.add(db_user)
+    db.commit()
+    db.refresh(db_user)
+    
+    return db_user
+
+
+@router.post("/login", response_model=Token)
+async def login(
+    form_data: OAuth2PasswordRequestForm = Depends(),
+    db: Session = Depends(get_db)
+) -> Any:
+    """
+    Get access token for user
+    """
+    # Try to find user by username
+    user = db.query(User).filter(User.username == form_data.username).first()
+    
+    # If user not found by username, try by email
+    if not user:
+        user = db.query(User).filter(User.email == form_data.username).first()
+    
+    # If user still not found or password is incorrect, raise error
+    if not user or not verify_password(form_data.password, user.hashed_password):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect username or password",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    # If user is not active, raise error
+    if not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Inactive user",
+        )
+    
+    # Generate access and refresh tokens
+    access_token = create_access_token(user.id)
+    refresh_token = create_refresh_token(user.id)
+    
+    return {
+        "access_token": access_token,
+        "refresh_token": refresh_token,
+        "token_type": "bearer",
+    }
+
+
+@router.post("/refresh", response_model=Token)
+async def refresh_token(
+    refresh_token_data: RefreshToken,
+    db: Session = Depends(get_db)
+) -> Any:
+    """
+    Refresh access token
+    """
+    token_data = verify_token(refresh_token_data.refresh_token)
+    if not token_data:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid refresh token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    user = db.query(User).filter(User.id == int(token_data.sub)).first()
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="User not found",
+        )
+    
+    if not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Inactive user",
+        )
+    
+    # Generate new tokens
+    access_token = create_access_token(user.id)
+    refresh_token = create_refresh_token(user.id)
+    
+    return {
+        "access_token": access_token,
+        "refresh_token": refresh_token,
+        "token_type": "bearer",
+    }
+
+
+@router.get("/me", response_model=UserSchema)
+async def get_me(
+    current_user: User = Depends(get_current_user)
+) -> Any:
+    """
+    Get current user information
+    """
+    return current_user
+
+
+@router.put("/me", response_model=UserSchema)
+async def update_me(
+    user_in: UserUpdate,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+) -> Any:
+    """
+    Update current user information
+    """
+    # Check if email already exists
+    if user_in.email and user_in.email != current_user.email:
+        user = db.query(User).filter(User.email == user_in.email).first()
+        if user:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="A user with this email already exists",
+            )
+    
+    # Check if username already exists
+    if user_in.username and user_in.username != current_user.username:
+        user = db.query(User).filter(User.username == user_in.username).first()
+        if user:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail="A user with this username already exists",
+            )
+    
+    # Update user data
+    for field, value in user_in.model_dump(exclude_unset=True).items():
+        setattr(current_user, field, value)
+    
+    db.add(current_user)
+    db.commit()
+    db.refresh(current_user)
+    
+    return current_user

app/api/v1/health.py

@@ -0,0 +1,18 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+from app.db.session import get_db
+
+router = APIRouter(tags=["Health"])
+
+
+@router.get("/health")
+async def health_check(db: Session = Depends(get_db)):
+    """
+    Health check endpoint to verify the API and database connection are working
+    """
+    try:
+        # Check if we can execute a simple query
+        db.execute("SELECT 1")
+        return {"status": "healthy", "database": "connected"}
+    except Exception as e:
+        return {"status": "unhealthy", "database": str(e)}

app/auth/__init__.py

@@ -0,0 +1,13 @@
+from app.auth.jwt import create_access_token, create_refresh_token, verify_token
+from app.auth.password import get_password_hash, verify_password
+from app.auth.dependencies import get_current_user, get_current_active_superuser
+
+__all__ = [
+    "create_access_token", 
+    "create_refresh_token", 
+    "verify_token", 
+    "get_password_hash", 
+    "verify_password",
+    "get_current_user",
+    "get_current_active_superuser"
+]

app/auth/dependencies.py

@@ -0,0 +1,55 @@
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+
+from app.auth.jwt import verify_token
+from app.db.session import get_db
+from app.models.user import User
+
+# Create OAuth2 scheme for token authentication
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/login")
+
+
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> User:
+    """
+    Dependency to get the current authenticated user
+    """
+    token_data = verify_token(token)
+    if not token_data:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    user = db.query(User).filter(User.id == int(token_data.sub)).first()
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="User not found",
+        )
+    
+    if not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST, 
+            detail="Inactive user"
+        )
+    
+    return user
+
+
+def get_current_active_superuser(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    """
+    Dependency to get the current authenticated superuser
+    """
+    if not current_user.is_superuser:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="The user doesn't have enough privileges",
+        )
+    
+    return current_user

app/auth/jwt.py

@@ -0,0 +1,60 @@
+from datetime import datetime, timedelta
+from typing import Any, Optional
+import os
+
+from jose import jwt
+from pydantic import ValidationError
+
+from app.schemas.token import TokenPayload
+
+# Get JWT settings from environment variables
+SECRET_KEY = os.getenv("SECRET_KEY", "supersecretkey")
+ALGORITHM = os.getenv("ALGORITHM", "HS256")
+ACCESS_TOKEN_EXPIRE_MINUTES = int(os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES", 30))
+REFRESH_TOKEN_EXPIRE_DAYS = int(os.getenv("REFRESH_TOKEN_EXPIRE_DAYS", 7))
+
+
+def create_access_token(subject: str | Any, expires_delta: Optional[timedelta] = None) -> str:
+    """
+    Create a new JWT access token
+    """
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    
+    to_encode = {"exp": expire, "sub": str(subject)}
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+def create_refresh_token(subject: str | Any, expires_delta: Optional[timedelta] = None) -> str:
+    """
+    Create a new JWT refresh token
+    """
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(days=REFRESH_TOKEN_EXPIRE_DAYS)
+    
+    to_encode = {"exp": expire, "sub": str(subject)}
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+
+def verify_token(token: str) -> Optional[TokenPayload]:
+    """
+    Verify and decode a JWT token
+    """
+    try:
+        payload = jwt.decode(
+            token, SECRET_KEY, algorithms=[ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+        
+        if datetime.fromtimestamp(token_data.exp) < datetime.utcnow():
+            return None
+        
+        return token_data
+    except (jwt.JWTError, ValidationError):
+        return None

app/auth/password.py

@@ -0,0 +1,18 @@
+from passlib.context import CryptContext
+
+# Create an instance of CryptContext for password hashing
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """
+    Verify if the provided plain password matches the hashed password
+    """
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """
+    Generate a hashed version of the plain password
+    """
+    return pwd_context.hash(password)

app/db/session.py

@@ -0,0 +1,29 @@
+from pathlib import Path
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+# Create the directory for 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)
+
+Base = declarative_base()
+
+
+def get_db():
+    """
+    Dependency function to get a database session
+    """
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/models/__init__.py

@@ -0,0 +1,3 @@
+from app.models.user import User
+
+__all__ = ["User"]

app/models/user.py

@@ -0,0 +1,18 @@
+from datetime import datetime
+from sqlalchemy import Boolean, Column, String, DateTime, Integer
+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/__init__.py

@@ -0,0 +1,4 @@
+from app.schemas.token import Token, TokenPayload, RefreshToken
+from app.schemas.user import UserBase, UserCreate, User, UserInDB, UserUpdate
+
+__all__ = ["Token", "TokenPayload", "RefreshToken", "UserBase", "UserCreate", "User", "UserInDB", "UserUpdate"]

app/schemas/token.py

@@ -0,0 +1,17 @@
+from typing import Optional
+from pydantic import BaseModel
+
+
+class Token(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str
+
+
+class TokenPayload(BaseModel):
+    sub: Optional[str] = None
+    exp: Optional[int] = None
+
+
+class RefreshToken(BaseModel):
+    refresh_token: str

app/schemas/user.py

@@ -0,0 +1,51 @@
+from datetime import datetime
+from typing import Optional
+from pydantic import BaseModel, EmailStr, Field, validator
+
+
+class UserBase(BaseModel):
+    email: EmailStr
+    username: str
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    is_active: Optional[bool] = True
+
+
+class UserCreate(UserBase):
+    password: str = Field(..., min_length=8)
+    password_confirm: str
+
+    @validator("password_confirm")
+    def passwords_match(cls, v, values):
+        if "password" in values and v != values["password"]:
+            raise ValueError("Passwords do not match")
+        return v
+
+
+class UserUpdate(BaseModel):
+    email: Optional[EmailStr] = None
+    username: Optional[str] = None
+    first_name: Optional[str] = None
+    last_name: Optional[str] = None
+    is_active: Optional[bool] = None
+
+
+class UserInDB(UserBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+    is_superuser: bool = False
+    hashed_password: str
+
+    class Config:
+        from_attributes = True
+
+
+class User(UserBase):
+    id: int
+    created_at: datetime
+    updated_at: datetime
+    is_superuser: bool = False
+
+    class Config:
+        from_attributes = True

main.py

@@ -0,0 +1,29 @@
+import uvicorn
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from app.api.v1.auth import router as auth_router
+from app.api.v1.health import router as health_router
+
+
+app = FastAPI(
+    title="User Authentication Service",
+    description="A FastAPI service for user authentication",
+    version="0.1.0",
+)
+
+# Configure CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Include routers
+app.include_router(auth_router, prefix="/api/v1")
+app.include_router(health_router)
+
+
+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 with SQLite.

migrations/env.py

@@ -0,0 +1,81 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+from app.db.session import Base
+
+# 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
+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
+            # ... other options
+        )
+
+        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/initial_migration.py

@@ -0,0 +1,49 @@
+"""Initial migration
+
+Revision ID: 001
+Revises: 
+Create Date: 2023-09-12
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '001'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # 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(), nullable=True),
+        sa.Column('is_superuser', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.Column('updated_at', sa.DateTime(), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    
+    # Create indexes
+    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() -> None:
+    # Drop indexes
+    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')
+    
+    # Drop table
+    op.drop_table('users')

requirements.txt

@@ -0,0 +1,13 @@
+fastapi>=0.103.1
+uvicorn>=0.23.2
+sqlalchemy>=2.0.20
+alembic>=1.12.0
+pydantic>=2.3.0
+pydantic-settings>=2.0.3
+python-jose>=3.3.0
+passlib>=1.7.4
+python-multipart>=0.0.6
+bcrypt>=4.0.1
+email-validator>=2.0.0
+ruff>=0.0.290
+python-dotenv>=1.0.0