Initial project setup with FastAPI, SQLite, and Alembic

- Set up SQLite database configuration and directory structure
- Configure Alembic for proper SQLite migrations
- Add initial model schemas and API endpoints
- Fix OAuth2 authentication
- Implement proper code formatting with Ruff

alembic.ini

@@ -0,0 +1,103 @@
+# 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
+
+# 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 with absolute path to ensure consistent database location
+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/__init__.py

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+# Weather Dashboard API Application Package

app/api/deps.py

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+
+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.db.session import get_db
+from app.core.config import settings
+from app.models.user import User
+from app.schemas.token import TokenPayload
+
+
+# OAuth2 scheme for token authentication
+oauth2_scheme = OAuth2PasswordBearer(
+    tokenUrl=f"{settings.API_V1_STR}/users/login"
+)
+
+
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> User:
+    """
+    Get the current authenticated user.
+    
+    Args:
+        db: Database session
+        token: JWT token
+        
+    Returns:
+        User object
+        
+    Raises:
+        HTTPException: If authentication fails
+    """
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        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 = db.query(User).filter(User.id == 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_user(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    """
+    Get the current active user.
+    
+    Args:
+        current_user: Current user
+        
+    Returns:
+        User object
+        
+    Raises:
+        HTTPException: If user is inactive
+    """
+    if not current_user.is_active:
+        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_user),
+) -> User:
+    """
+    Get the current active superuser.
+    
+    Args:
+        current_user: Current user
+        
+    Returns:
+        User object
+        
+    Raises:
+        HTTPException: If user is not a 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/api/v1/endpoints/locations.py

@@ -0,0 +1,123 @@
+from typing import Any, List
+
+from fastapi import APIRouter, Depends, Path
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.core.exceptions import NotFoundException, ForbiddenException
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.location import Location, LocationCreate, LocationUpdate
+
+
+router = APIRouter()
+
+
+@router.get("/", response_model=List[Location])
+def get_user_locations(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get all locations for the current user.
+    """
+    locations = crud.get_user_locations(db, user_id=current_user.id)
+    return locations
+
+
+@router.get("/default", response_model=Location)
+def get_default_location(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get the default location for the current user.
+    """
+    location = crud.get_user_default_location(db, user_id=current_user.id)
+    
+    if not location:
+        raise NotFoundException(detail="No default location set for this user")
+    
+    return location
+
+
+@router.post("/", response_model=Location)
+def create_location(
+    location_in: LocationCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Create a new location for the current user.
+    """
+    location = crud.create_location(db, obj_in=location_in, user_id=current_user.id)
+    return location
+
+
+@router.get("/{location_id}", response_model=Location)
+def get_location(
+    location_id: int = Path(..., description="ID of the location to get"),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get a specific location by ID.
+    """
+    location = crud.get_location(db, location_id=location_id)
+    
+    if not location:
+        raise NotFoundException(detail="Location not found")
+    
+    # Check if location belongs to current user
+    if location.user_id != current_user.id:
+        raise ForbiddenException(detail="Not enough permissions to access this location")
+    
+    return location
+
+
+@router.put("/{location_id}", response_model=Location)
+def update_location(
+    location_in: LocationUpdate,
+    location_id: int = Path(..., description="ID of the location to update"),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Update a specific location by ID.
+    """
+    location = crud.get_location(db, location_id=location_id)
+    
+    if not location:
+        raise NotFoundException(detail="Location not found")
+    
+    # Check if location belongs to current user
+    if location.user_id != current_user.id:
+        raise ForbiddenException(detail="Not enough permissions to update this location")
+    
+    location = crud.update_location(db, db_obj=location, obj_in=location_in)
+    
+    return location
+
+
+@router.delete("/{location_id}", response_model=Location)
+def delete_location(
+    location_id: int = Path(..., description="ID of the location to delete"),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Delete a specific location by ID.
+    """
+    location = crud.get_location(db, location_id=location_id)
+    
+    if not location:
+        raise NotFoundException(detail="Location not found")
+    
+    # Check if location belongs to current user
+    if location.user_id != current_user.id:
+        raise ForbiddenException(detail="Not enough permissions to delete this location")
+    
+    location = crud.delete_location(db, location_id=location_id)
+    
+    return location

app/api/v1/endpoints/users.py

@@ -0,0 +1,76 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.core.exceptions import BadRequestException, UnauthorizedException
+from app.core.security import create_access_token, verify_password
+from app.db.session import get_db
+from app.schemas.token import Token
+from app.schemas.user import User, UserCreate
+
+
+router = APIRouter()
+
+
+@router.post("/register", response_model=User)
+def register_user(
+    user_in: UserCreate,
+    db: Session = Depends(get_db)
+) -> Any:
+    """
+    Register a new user.
+    """
+    # Check if user with this email already exists
+    user = crud.get_by_email(db, email=user_in.email)
+    if user:
+        raise BadRequestException(detail="A user with this email already exists")
+    
+    # Check if user with this username already exists
+    user = crud.get_by_username(db, username=user_in.username)
+    if user:
+        raise BadRequestException(detail="A user with this username already exists")
+    
+    # Create new user
+    user = crud.create_user(db, obj_in=user_in)
+    
+    return user
+
+
+@router.post("/login", response_model=Token)
+def login(
+    db: Session = Depends(get_db),
+    form_data: OAuth2PasswordRequestForm = Depends()
+) -> Any:
+    """
+    Get access token for user.
+    """
+    # Try to authenticate with email
+    user = crud.get_by_email(db, email=form_data.username)
+    if not user:
+        # Try to authenticate with username
+        user = crud.get_by_username(db, username=form_data.username)
+    
+    if not user:
+        raise UnauthorizedException(detail="Incorrect email/username or password")
+    
+    if not verify_password(form_data.password, user.hashed_password):
+        raise UnauthorizedException(detail="Incorrect email/username or password")
+    
+    # Create access token
+    access_token = create_access_token(subject=user.id)
+    
+    return {"access_token": access_token, "token_type": "bearer"}
+
+
+@router.get("/me", response_model=User)
+def read_users_me(
+    current_user: User = Depends(deps.get_current_active_user)
+) -> Any:
+    """
+    Get current user.
+    """
+    return current_user

app/api/v1/endpoints/weather.py

@@ -0,0 +1,159 @@
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.orm import Session
+
+from app import crud
+from app.api import deps
+from app.db.session import get_db
+from app.models.user import User
+from app.schemas.weather import CurrentWeather, Forecast
+from app.services.cache_service import cache
+from app.services.weather_service import WeatherService
+
+
+router = APIRouter()
+
+
+@router.get("/current", response_model=CurrentWeather)
+async def get_current_weather(
+    lat: float = Query(..., le=90, ge=-90, description="Latitude coordinate"),
+    lon: float = Query(..., le=180, ge=-180, description="Longitude coordinate"),
+    location_name: str = Query(None, description="Optional location name"),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get current weather data for a specific location.
+    """
+    # Create cache key
+    cache_key = f"current_weather:{lat}:{lon}"
+    
+    # Check cache first
+    cached_data = cache.get(cache_key)
+    if cached_data:
+        return cached_data
+    
+    # Fetch data from weather service
+    weather_service = WeatherService()
+    weather_data = await weather_service.get_current_weather(
+        lat=lat, 
+        lon=lon, 
+        location_name=location_name
+    )
+    
+    # Cache the result
+    cache.set(cache_key, weather_data)
+    
+    return weather_data
+
+
+@router.get("/current/default", response_model=CurrentWeather)
+async def get_current_weather_for_default_location(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get current weather data for the user's default location.
+    """
+    # Get user's default location
+    default_location = crud.get_user_default_location(db, user_id=current_user.id)
+    
+    if not default_location:
+        raise HTTPException(
+            status_code=404,
+            detail="No default location set for this user"
+        )
+    
+    # Create cache key
+    cache_key = f"current_weather:{default_location.latitude}:{default_location.longitude}"
+    
+    # Check cache first
+    cached_data = cache.get(cache_key)
+    if cached_data:
+        return cached_data
+    
+    # Fetch data from weather service
+    weather_service = WeatherService()
+    weather_data = await weather_service.get_current_weather(
+        lat=default_location.latitude, 
+        lon=default_location.longitude, 
+        location_name=default_location.name
+    )
+    
+    # Cache the result
+    cache.set(cache_key, weather_data)
+    
+    return weather_data
+
+
+@router.get("/forecast", response_model=Forecast)
+async def get_forecast(
+    lat: float = Query(..., le=90, ge=-90, description="Latitude coordinate"),
+    lon: float = Query(..., le=180, ge=-180, description="Longitude coordinate"),
+    location_name: str = Query(None, description="Optional location name"),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get 5-day weather forecast for a specific location.
+    """
+    # Create cache key
+    cache_key = f"forecast:{lat}:{lon}"
+    
+    # Check cache first
+    cached_data = cache.get(cache_key)
+    if cached_data:
+        return cached_data
+    
+    # Fetch data from weather service
+    weather_service = WeatherService()
+    forecast_data = await weather_service.get_forecast(
+        lat=lat, 
+        lon=lon, 
+        location_name=location_name
+    )
+    
+    # Cache the result
+    cache.set(cache_key, forecast_data)
+    
+    return forecast_data
+
+
+@router.get("/forecast/default", response_model=Forecast)
+async def get_forecast_for_default_location(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(deps.get_current_active_user),
+) -> Any:
+    """
+    Get 5-day weather forecast for the user's default location.
+    """
+    # Get user's default location
+    default_location = crud.get_user_default_location(db, user_id=current_user.id)
+    
+    if not default_location:
+        raise HTTPException(
+            status_code=404,
+            detail="No default location set for this user"
+        )
+    
+    # Create cache key
+    cache_key = f"forecast:{default_location.latitude}:{default_location.longitude}"
+    
+    # Check cache first
+    cached_data = cache.get(cache_key)
+    if cached_data:
+        return cached_data
+    
+    # Fetch data from weather service
+    weather_service = WeatherService()
+    forecast_data = await weather_service.get_forecast(
+        lat=default_location.latitude, 
+        lon=default_location.longitude, 
+        location_name=default_location.name
+    )
+    
+    # Cache the result
+    cache.set(cache_key, forecast_data)
+    
+    return forecast_data

app/api/v1/router.py

@@ -0,0 +1,10 @@
+from fastapi import APIRouter
+
+from app.api.v1.endpoints import weather, locations, users
+
+api_router = APIRouter(prefix="/api/v1")
+
+# Include routers for different endpoints
+api_router.include_router(weather.router, prefix="/weather", tags=["Weather"])
+api_router.include_router(locations.router, prefix="/locations", tags=["Locations"])
+api_router.include_router(users.router, prefix="/users", tags=["Users"])

app/core/config.py

@@ -0,0 +1,44 @@
+from pathlib import Path
+from typing import List
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    """Application settings."""
+    
+    # Project info
+    PROJECT_NAME: str = "Weather Dashboard API"
+    PROJECT_DESCRIPTION: str = "API for weather data, forecasts, and more"
+    VERSION: str = "0.1.0"
+    
+    # API
+    API_V1_STR: str = "/api/v1"
+    
+    # CORS
+    CORS_ORIGINS: List[str] = ["*"]
+    
+    # OpenWeather API
+    OPENWEATHER_API_KEY: str = ""
+    OPENWEATHER_API_URL: str = "https://api.openweathermap.org/data/2.5"
+    
+    # JWT
+    SECRET_KEY: str = "REPLACE_THIS_WITH_A_SECURE_SECRET_KEY"
+    ALGORITHM: str = "HS256"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
+    
+    # Cache
+    CACHE_EXPIRATION_SECONDS: int = 300  # 5 minutes
+    
+    class Config:
+        env_file = ".env"
+        case_sensitive = True
+
+
+# Create settings instance
+settings = Settings()
+
+# Database paths
+DB_DIR = Path("/app") / "storage" / "db"
+DB_DIR.mkdir(parents=True, exist_ok=True)
+
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_DIR}/db.sqlite"

app/core/exceptions.py

@@ -0,0 +1,73 @@
+from typing import Any, Dict, Optional
+
+from fastapi import HTTPException, status
+
+
+class WeatherAPIException(HTTPException):
+    """Custom exception for the Weather API."""
+    
+    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 WeatherServiceException(WeatherAPIException):
+    """Exception for weather service errors."""
+    
+    def __init__(
+        self,
+        detail: str = "Weather service error",
+        status_code: int = status.HTTP_503_SERVICE_UNAVAILABLE,
+    ) -> None:
+        super().__init__(status_code=status_code, detail=detail)
+
+
+class NotFoundException(WeatherAPIException):
+    """Exception for resources not found."""
+    
+    def __init__(
+        self,
+        detail: str = "Resource not found",
+    ) -> None:
+        super().__init__(status_code=status.HTTP_404_NOT_FOUND, detail=detail)
+
+
+class ForbiddenException(WeatherAPIException):
+    """Exception for forbidden actions."""
+    
+    def __init__(
+        self,
+        detail: str = "Not enough permissions",
+    ) -> None:
+        super().__init__(status_code=status.HTTP_403_FORBIDDEN, detail=detail)
+
+
+class BadRequestException(WeatherAPIException):
+    """Exception for bad requests."""
+    
+    def __init__(
+        self,
+        detail: str = "Bad request",
+    ) -> None:
+        super().__init__(status_code=status.HTTP_400_BAD_REQUEST, detail=detail)
+
+
+class UnauthorizedException(WeatherAPIException):
+    """Exception for unauthorized requests."""
+    
+    def __init__(
+        self,
+        detail: str = "Not authenticated",
+        headers: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        if not headers:
+            headers = {"WWW-Authenticate": "Bearer"}
+        super().__init__(
+            status_code=status.HTTP_401_UNAUTHORIZED, 
+            detail=detail,
+            headers=headers
+        )

app/core/middleware.py

@@ -0,0 +1,52 @@
+import time
+import logging
+from typing import Callable
+
+from fastapi import FastAPI, Request, Response
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.middleware.trustedhost import TrustedHostMiddleware
+from starlette.middleware.base import BaseHTTPMiddleware
+
+
+logger = logging.getLogger(__name__)
+
+
+class ProcessTimeMiddleware(BaseHTTPMiddleware):
+    """Middleware to log request processing time."""
+    
+    async def dispatch(self, request: Request, call_next: Callable) -> Response:
+        start_time = time.time()
+        
+        response = await call_next(request)
+        
+        process_time = time.time() - start_time
+        response.headers["X-Process-Time"] = str(process_time)
+        
+        # Log request details and processing time
+        logger.info(
+            f"{request.method} {request.url.path} {response.status_code} "
+            f"Processed in {process_time:.4f} seconds"
+        )
+        
+        return response
+
+
+def setup_middlewares(app: FastAPI) -> None:
+    """Set up all middlewares for the application."""
+    
+    # Add CORS middleware first
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+    
+    # Add trusted host middleware
+    app.add_middleware(
+        TrustedHostMiddleware, allowed_hosts=["*"]
+    )
+    
+    # Add custom processing time middleware
+    app.add_middleware(ProcessTimeMiddleware)

app/core/security.py

@@ -0,0 +1,91 @@
+from datetime import datetime, timedelta
+from typing import Any, Optional, Union
+
+from jose import jwt
+from passlib.context import CryptContext
+from sqlalchemy.orm import Session
+
+from app.core.config import settings
+from app.models.user import User
+
+
+# Password hashing
+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.
+    
+    Args:
+        subject: Token subject (usually user ID)
+        expires_delta: Token expiration time
+        
+    Returns:
+        JWT token string
+    """
+    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:
+    """
+    Verify password against hash.
+    
+    Args:
+        plain_password: Plain text password
+        hashed_password: Hashed password
+        
+    Returns:
+        True if password matches hash
+    """
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """
+    Hash a password.
+    
+    Args:
+        password: Plain text password
+        
+    Returns:
+        Hashed password
+    """
+    return pwd_context.hash(password)
+
+
+def authenticate_user(db: Session, email: str, password: str) -> Optional[User]:
+    """
+    Authenticate a user.
+    
+    Args:
+        db: Database session
+        email: User email
+        password: User password
+        
+    Returns:
+        User object if authentication successful, None otherwise
+    """
+    user = db.query(User).filter(User.email == email).first()
+    
+    if not user:
+        return None
+    
+    if not verify_password(password, user.hashed_password):
+        return None
+    
+    return user

app/crud/__init__.py

@@ -0,0 +1,20 @@
+# Re-export the CRUD functions
+from app.crud.user import get as get_user
+from app.crud.user import get_by_email
+from app.crud.user import get_by_username
+from app.crud.user import create as create_user
+from app.crud.user import update as update_user
+from app.crud.user import delete as delete_user
+
+from app.crud.location import get as get_location
+from app.crud.location import get_user_locations
+from app.crud.location import get_user_default_location
+from app.crud.location import create as create_location
+from app.crud.location import update as update_location
+from app.crud.location import delete as delete_location
+
+__all__ = [
+    "get_user", "get_by_email", "get_by_username", "create_user", "update_user", "delete_user",
+    "get_location", "get_user_locations", "get_user_default_location", "create_location", 
+    "update_location", "delete_location"
+]

app/crud/location.py

@@ -0,0 +1,133 @@
+from typing import List, Optional
+
+from sqlalchemy.orm import Session
+
+from app.models.location import Location
+from app.schemas.location import LocationCreate, LocationUpdate
+
+
+def get(db: Session, location_id: int) -> Optional[Location]:
+    """
+    Get a location by ID.
+    
+    Args:
+        db: Database session
+        location_id: Location ID
+        
+    Returns:
+        Location object if found, None otherwise
+    """
+    return db.query(Location).filter(Location.id == location_id).first()
+
+
+def get_user_locations(db: Session, user_id: int) -> List[Location]:
+    """
+    Get all locations for a user.
+    
+    Args:
+        db: Database session
+        user_id: User ID
+        
+    Returns:
+        List of location objects
+    """
+    return db.query(Location).filter(Location.user_id == user_id).all()
+
+
+def get_user_default_location(db: Session, user_id: int) -> Optional[Location]:
+    """
+    Get the default location for a user.
+    
+    Args:
+        db: Database session
+        user_id: User ID
+        
+    Returns:
+        Default location object if found, None otherwise
+    """
+    return db.query(Location).filter(
+        Location.user_id == user_id, 
+        Location.is_default
+    ).first()
+
+
+def create(db: Session, obj_in: LocationCreate, user_id: int) -> Location:
+    """
+    Create a new location.
+    
+    Args:
+        db: Database session
+        obj_in: Location creation data
+        user_id: User ID
+        
+    Returns:
+        Created location object
+    """
+    # If this is set as default, unset any existing default
+    if obj_in.is_default:
+        existing_default = get_user_default_location(db, user_id)
+        if existing_default:
+            existing_default.is_default = False
+            db.add(existing_default)
+    
+    db_obj = Location(
+        **obj_in.dict(),
+        user_id=user_id
+    )
+    
+    db.add(db_obj)
+    db.commit()
+    db.refresh(db_obj)
+    
+    return db_obj
+
+
+def update(db: Session, db_obj: Location, obj_in: LocationUpdate) -> Location:
+    """
+    Update a location.
+    
+    Args:
+        db: Database session
+        db_obj: Location object to update
+        obj_in: Location update data
+        
+    Returns:
+        Updated location object
+    """
+    update_data = obj_in.dict(exclude_unset=True)
+    
+    # If this is set as default, unset any existing default
+    if update_data.get("is_default"):
+        existing_default = get_user_default_location(db, db_obj.user_id)
+        if existing_default and existing_default.id != db_obj.id:
+            existing_default.is_default = False
+            db.add(existing_default)
+    
+    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 delete(db: Session, location_id: int) -> Optional[Location]:
+    """
+    Delete a location.
+    
+    Args:
+        db: Database session
+        location_id: Location ID
+        
+    Returns:
+        Deleted location object if found, None otherwise
+    """
+    location = db.query(Location).filter(Location.id == location_id).first()
+    
+    if location:
+        db.delete(location)
+        db.commit()
+    
+    return location

app/crud/user.py

@@ -0,0 +1,121 @@
+from typing import Optional
+
+from sqlalchemy.orm import Session
+
+from app.core.security import get_password_hash
+from app.models.user import User
+from app.schemas.user import UserCreate, UserUpdate
+
+
+def get(db: Session, user_id: int) -> Optional[User]:
+    """
+    Get a user by ID.
+    
+    Args:
+        db: Database session
+        user_id: User ID
+        
+    Returns:
+        User object if found, None otherwise
+    """
+    return db.query(User).filter(User.id == user_id).first()
+
+
+def get_by_email(db: Session, email: str) -> Optional[User]:
+    """
+    Get a user by email.
+    
+    Args:
+        db: Database session
+        email: User email
+        
+    Returns:
+        User object if found, None otherwise
+    """
+    return db.query(User).filter(User.email == email).first()
+
+
+def get_by_username(db: Session, username: str) -> Optional[User]:
+    """
+    Get a user by username.
+    
+    Args:
+        db: Database session
+        username: Username
+        
+    Returns:
+        User object if found, None otherwise
+    """
+    return db.query(User).filter(User.username == username).first()
+
+
+def create(db: Session, obj_in: UserCreate) -> User:
+    """
+    Create a new user.
+    
+    Args:
+        db: Database session
+        obj_in: User creation data
+        
+    Returns:
+        Created user object
+    """
+    db_obj = User(
+        email=obj_in.email,
+        username=obj_in.username,
+        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(db: Session, db_obj: User, obj_in: UserUpdate) -> User:
+    """
+    Update a user.
+    
+    Args:
+        db: Database session
+        db_obj: User object to update
+        obj_in: User update data
+        
+    Returns:
+        Updated user object
+    """
+    update_data = obj_in.dict(exclude_unset=True)
+    
+    if "password" in update_data:
+        update_data["hashed_password"] = get_password_hash(update_data.pop("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 delete(db: Session, user_id: int) -> Optional[User]:
+    """
+    Delete a user.
+    
+    Args:
+        db: Database session
+        user_id: User ID
+        
+    Returns:
+        Deleted user object if found, None otherwise
+    """
+    user = db.query(User).filter(User.id == user_id).first()
+    
+    if user:
+        db.delete(user)
+        db.commit()
+    
+    return user

app/db/session.py

@@ -0,0 +1,30 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import SQLALCHEMY_DATABASE_URL
+
+# Create SQLAlchemy engine
+engine = create_engine(
+    SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False}  # Only needed for SQLite
+)
+
+# Create SessionLocal class
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# Create Base class for models
+Base = declarative_base()
+
+
+# Dependency to get DB session
+def get_db():
+    """
+    Dependency for getting the database session.
+    Creates a new session for each request and closes it when done.
+    """
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/models/__init__.py

@@ -0,0 +1,5 @@
+# Re-export models
+from app.models.user import User
+from app.models.location import Location
+
+__all__ = ["User", "Location"]

app/models/location.py

@@ -0,0 +1,26 @@
+from sqlalchemy import Column, Integer, String, Float, ForeignKey, DateTime, Boolean
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class Location(Base):
+    """Location model for storing locations and their weather data."""
+    
+    __tablename__ = "locations"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, index=True, nullable=False)
+    latitude = Column(Float, nullable=False)
+    longitude = Column(Float, nullable=False)
+    country = Column(String, nullable=True)
+    is_default = Column(Boolean, default=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    
+    # Foreign keys
+    user_id = Column(Integer, ForeignKey("users.id"))
+    
+    # Relationships
+    user = relationship("User", back_populates="locations")

app/models/user.py

@@ -0,0 +1,23 @@
+from sqlalchemy import Boolean, Column, Integer, String, DateTime
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class User(Base):
+    """User model for authentication and identification."""
+    
+    __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)
+    is_active = Column(Boolean, default=True)
+    is_superuser = Column(Boolean, default=False)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    
+    # Relationships
+    locations = relationship("Location", back_populates="user", cascade="all, delete-orphan")

app/schemas/__init__.py

@@ -0,0 +1,12 @@
+# Re-export schemas
+from app.schemas.user import User, UserCreate, UserUpdate, UserInDB
+from app.schemas.location import Location, LocationCreate, LocationUpdate
+from app.schemas.weather import WeatherData, ForecastItem, Forecast, CurrentWeather, WeatherQuery
+from app.schemas.token import Token, TokenPayload
+
+__all__ = [
+    "User", "UserCreate", "UserUpdate", "UserInDB",
+    "Location", "LocationCreate", "LocationUpdate",
+    "WeatherData", "ForecastItem", "Forecast", "CurrentWeather", "WeatherQuery",
+    "Token", "TokenPayload"
+]

app/schemas/location.py

@@ -0,0 +1,43 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, Field
+
+
+class LocationBase(BaseModel):
+    """Base schema for location data."""
+    name: str
+    latitude: float = Field(..., le=90, ge=-90)
+    longitude: float = Field(..., le=180, ge=-180)
+    country: Optional[str] = None
+    is_default: Optional[bool] = False
+
+
+class LocationCreate(LocationBase):
+    """Schema for creating a new location."""
+    pass
+
+
+class LocationUpdate(BaseModel):
+    """Schema for updating an existing location."""
+    name: Optional[str] = None
+    latitude: Optional[float] = Field(None, le=90, ge=-90)
+    longitude: Optional[float] = Field(None, le=180, ge=-180)
+    country: Optional[str] = None
+    is_default: Optional[bool] = None
+
+
+class LocationInDBBase(LocationBase):
+    """Base schema for location with DB fields."""
+    id: int
+    user_id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class Location(LocationInDBBase):
+    """Schema for location response data."""
+    pass

app/schemas/token.py

@@ -0,0 +1,14 @@
+from typing import Optional
+
+from pydantic import BaseModel
+
+
+class Token(BaseModel):
+    """Schema for access token."""
+    access_token: str
+    token_type: str
+
+
+class TokenPayload(BaseModel):
+    """Schema for token payload."""
+    sub: Optional[int] = None

app/schemas/user.py

@@ -0,0 +1,44 @@
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, EmailStr, Field
+
+
+class UserBase(BaseModel):
+    """Base schema for user information."""
+    email: EmailStr
+    username: str
+    is_active: Optional[bool] = True
+
+
+class UserCreate(UserBase):
+    """Schema for creating a new user."""
+    password: str = Field(..., min_length=8)
+
+
+class UserUpdate(BaseModel):
+    """Schema for updating an existing user."""
+    email: Optional[EmailStr] = None
+    username: Optional[str] = None
+    password: Optional[str] = Field(None, min_length=8)
+    is_active: Optional[bool] = None
+
+
+class UserInDBBase(UserBase):
+    """Base schema for user with DB fields."""
+    id: int
+    created_at: datetime
+    updated_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class User(UserInDBBase):
+    """Schema for user response data (no password)."""
+    pass
+
+
+class UserInDB(UserInDBBase):
+    """Schema for user in DB (includes password)."""
+    hashed_password: str

app/schemas/weather.py

@@ -0,0 +1,56 @@
+from datetime import datetime
+from typing import List, Optional
+
+from pydantic import BaseModel, Field
+
+
+class WeatherData(BaseModel):
+    """Schema for current weather data."""
+    temperature: float  # Temperature in Celsius
+    feels_like: float  # Feels like temperature in Celsius
+    humidity: int = Field(..., ge=0, le=100)  # Humidity in percentage
+    pressure: int  # Atmospheric pressure in hPa
+    wind_speed: float  # Wind speed in meters/sec
+    wind_direction: int = Field(..., ge=0, le=360)  # Wind direction in degrees
+    weather_condition: str  # Main weather condition (e.g., "Rain", "Clear")
+    weather_description: str  # Detailed weather description
+    weather_icon: str  # Icon code for the weather condition
+    clouds: int = Field(..., ge=0, le=100)  # Cloudiness in percentage
+    timestamp: datetime  # Time of data calculation
+    sunrise: datetime  # Sunrise time
+    sunset: datetime  # Sunset time
+
+
+class ForecastItem(BaseModel):
+    """Schema for a single forecast item."""
+    timestamp: datetime  # Time of forecasted data
+    temperature: float  # Temperature in Celsius
+    feels_like: float  # Feels like temperature in Celsius
+    humidity: int = Field(..., ge=0, le=100)  # Humidity in percentage
+    pressure: int  # Atmospheric pressure in hPa
+    wind_speed: float  # Wind speed in meters/sec
+    wind_direction: int = Field(..., ge=0, le=360)  # Wind direction in degrees
+    weather_condition: str  # Main weather condition
+    weather_description: str  # Detailed weather description
+    weather_icon: str  # Icon code for the weather condition
+    clouds: int = Field(..., ge=0, le=100)  # Cloudiness in percentage
+    probability_of_precipitation: float = Field(..., ge=0, le=1)  # Probability of precipitation
+
+
+class Forecast(BaseModel):
+    """Schema for weather forecast data."""
+    location_name: str
+    items: List[ForecastItem]
+
+
+class CurrentWeather(BaseModel):
+    """Schema for current weather response."""
+    location_name: str
+    weather: WeatherData
+
+
+class WeatherQuery(BaseModel):
+    """Schema for querying weather data."""
+    latitude: float = Field(..., le=90, ge=-90)
+    longitude: float = Field(..., le=180, ge=-180)
+    location_name: Optional[str] = None

app/services/__init__.py

@@ -0,0 +1,5 @@
+# Re-export services
+from app.services.weather_service import WeatherService
+from app.services.cache_service import CacheService, cache
+
+__all__ = ["WeatherService", "CacheService", "cache"]

app/services/cache_service.py

@@ -0,0 +1,69 @@
+import time
+from typing import Any, Dict, Optional
+
+from app.core.config import settings
+
+
+class CacheService:
+    """Simple in-memory cache service."""
+    
+    def __init__(self):
+        self._cache: Dict[str, Dict[str, Any]] = {}
+    
+    def get(self, key: str) -> Optional[Any]:
+        """
+        Get value from cache.
+        
+        Args:
+            key: Cache key
+            
+        Returns:
+            Cached value or None if not found or expired
+        """
+        if key not in self._cache:
+            return None
+        
+        cache_item = self._cache[key]
+        
+        # Check if cache item has expired
+        if time.time() > cache_item["expires_at"]:
+            # Remove expired item
+            del self._cache[key]
+            return None
+        
+        return cache_item["value"]
+    
+    def set(self, key: str, value: Any, expires_in: Optional[int] = None) -> None:
+        """
+        Set value in cache.
+        
+        Args:
+            key: Cache key
+            value: Value to cache
+            expires_in: Expiration time in seconds (default from settings)
+        """
+        if expires_in is None:
+            expires_in = settings.CACHE_EXPIRATION_SECONDS
+        
+        self._cache[key] = {
+            "value": value,
+            "expires_at": time.time() + expires_in
+        }
+    
+    def delete(self, key: str) -> None:
+        """
+        Delete value from cache.
+        
+        Args:
+            key: Cache key
+        """
+        if key in self._cache:
+            del self._cache[key]
+    
+    def clear(self) -> None:
+        """Clear all cached values."""
+        self._cache.clear()
+
+
+# Create a singleton instance of the cache
+cache = CacheService()

app/services/weather_service.py

@@ -0,0 +1,194 @@
+import logging
+from datetime import datetime
+from typing import Dict, List, Optional, Any
+
+import httpx
+from fastapi import HTTPException
+
+from app.core.config import settings
+from app.schemas.weather import WeatherData, ForecastItem, Forecast, CurrentWeather
+
+
+logger = logging.getLogger(__name__)
+
+
+class WeatherService:
+    """Service for interacting with the OpenWeatherMap API."""
+    
+    def __init__(self):
+        self.api_key = settings.OPENWEATHER_API_KEY
+        self.base_url = settings.OPENWEATHER_API_URL
+        
+        if not self.api_key:
+            logger.warning("OpenWeatherMap API key not set. Weather data will not be available.")
+    
+    async def get_current_weather(self, lat: float, lon: float, location_name: Optional[str] = None) -> CurrentWeather:
+        """
+        Get current weather data for a specific location.
+        
+        Args:
+            lat: Latitude coordinate
+            lon: Longitude coordinate
+            location_name: Optional name of the location
+            
+        Returns:
+            CurrentWeather object with location name and weather data
+        """
+        if not self.api_key:
+            raise HTTPException(status_code=503, detail="Weather service not available. API key not configured.")
+        
+        url = f"{self.base_url}/weather"
+        params = {
+            "lat": lat,
+            "lon": lon,
+            "appid": self.api_key,
+            "units": "metric",  # Use metric units (Celsius)
+        }
+        
+        try:
+            async with httpx.AsyncClient() as client:
+                response = await client.get(url, params=params)
+                response.raise_for_status()
+                data = response.json()
+                
+                # Extract location name from response if not provided
+                if not location_name:
+                    location_name = data.get("name", f"Location ({lat}, {lon})")
+                
+                # Parse weather data
+                weather_data = self._parse_current_weather(data)
+                
+                return CurrentWeather(
+                    location_name=location_name,
+                    weather=weather_data
+                )
+        
+        except httpx.HTTPStatusError as e:
+            logger.error(f"HTTP error from OpenWeatherMap API: {e}")
+            if e.response.status_code == 401:
+                raise HTTPException(status_code=503, detail="Weather service authentication failed.")
+            elif e.response.status_code == 404:
+                raise HTTPException(status_code=404, detail="Weather data not found for this location.")
+            else:
+                raise HTTPException(status_code=503, detail=f"Weather service error: {e}")
+        
+        except Exception as e:
+            logger.error(f"Error fetching weather data: {e}")
+            raise HTTPException(status_code=503, detail="Failed to fetch weather data.")
+    
+    async def get_forecast(self, lat: float, lon: float, location_name: Optional[str] = None) -> Forecast:
+        """
+        Get 5-day weather forecast for a specific location.
+        
+        Args:
+            lat: Latitude coordinate
+            lon: Longitude coordinate
+            location_name: Optional name of the location
+            
+        Returns:
+            Forecast object with location name and forecast items
+        """
+        if not self.api_key:
+            raise HTTPException(status_code=503, detail="Weather service not available. API key not configured.")
+        
+        url = f"{self.base_url}/forecast"
+        params = {
+            "lat": lat,
+            "lon": lon,
+            "appid": self.api_key,
+            "units": "metric",  # Use metric units (Celsius)
+        }
+        
+        try:
+            async with httpx.AsyncClient() as client:
+                response = await client.get(url, params=params)
+                response.raise_for_status()
+                data = response.json()
+                
+                # Extract location name from response if not provided
+                if not location_name:
+                    city_data = data.get("city", {})
+                    location_name = city_data.get("name", f"Location ({lat}, {lon})")
+                
+                # Parse forecast data
+                forecast_items = self._parse_forecast(data)
+                
+                return Forecast(
+                    location_name=location_name,
+                    items=forecast_items
+                )
+        
+        except httpx.HTTPStatusError as e:
+            logger.error(f"HTTP error from OpenWeatherMap API: {e}")
+            if e.response.status_code == 401:
+                raise HTTPException(status_code=503, detail="Weather service authentication failed.")
+            elif e.response.status_code == 404:
+                raise HTTPException(status_code=404, detail="Weather forecast not found for this location.")
+            else:
+                raise HTTPException(status_code=503, detail=f"Weather service error: {e}")
+        
+        except Exception as e:
+            logger.error(f"Error fetching weather forecast: {e}")
+            raise HTTPException(status_code=503, detail="Failed to fetch weather forecast.")
+    
+    def _parse_current_weather(self, data: Dict[str, Any]) -> WeatherData:
+        """Parse current weather data from OpenWeatherMap API response."""
+        try:
+            weather = data.get("weather", [{}])[0]
+            main = data.get("main", {})
+            wind = data.get("wind", {})
+            clouds = data.get("clouds", {})
+            sys = data.get("sys", {})
+            
+            return WeatherData(
+                temperature=main.get("temp", 0),
+                feels_like=main.get("feels_like", 0),
+                humidity=main.get("humidity", 0),
+                pressure=main.get("pressure", 0),
+                wind_speed=wind.get("speed", 0),
+                wind_direction=wind.get("deg", 0),
+                weather_condition=weather.get("main", "Unknown"),
+                weather_description=weather.get("description", "Unknown"),
+                weather_icon=weather.get("icon", ""),
+                clouds=clouds.get("all", 0),
+                timestamp=datetime.fromtimestamp(data.get("dt", 0)),
+                sunrise=datetime.fromtimestamp(sys.get("sunrise", 0)),
+                sunset=datetime.fromtimestamp(sys.get("sunset", 0)),
+            )
+        except Exception as e:
+            logger.error(f"Error parsing current weather data: {e}")
+            raise HTTPException(status_code=500, detail="Failed to parse weather data.")
+    
+    def _parse_forecast(self, data: Dict[str, Any]) -> List[ForecastItem]:
+        """Parse forecast data from OpenWeatherMap API response."""
+        try:
+            forecast_items = []
+            
+            for item in data.get("list", []):
+                weather = item.get("weather", [{}])[0]
+                main = item.get("main", {})
+                wind = item.get("wind", {})
+                clouds = item.get("clouds", {})
+                
+                forecast_item = ForecastItem(
+                    timestamp=datetime.fromtimestamp(item.get("dt", 0)),
+                    temperature=main.get("temp", 0),
+                    feels_like=main.get("feels_like", 0),
+                    humidity=main.get("humidity", 0),
+                    pressure=main.get("pressure", 0),
+                    wind_speed=wind.get("speed", 0),
+                    wind_direction=wind.get("deg", 0),
+                    weather_condition=weather.get("main", "Unknown"),
+                    weather_description=weather.get("description", "Unknown"),
+                    weather_icon=weather.get("icon", ""),
+                    clouds=clouds.get("all", 0),
+                    probability_of_precipitation=item.get("pop", 0),
+                )
+                
+                forecast_items.append(forecast_item)
+            
+            return forecast_items
+        
+        except Exception as e:
+            logger.error(f"Error parsing forecast data: {e}")
+            raise HTTPException(status_code=500, detail="Failed to parse forecast data.")

main.py

@@ -0,0 +1,88 @@
+import logging
+import uvicorn
+from fastapi import FastAPI, Request, status
+from fastapi.responses import JSONResponse
+from fastapi.exceptions import RequestValidationError
+
+from app.api.v1.router import api_router
+from app.core.config import settings
+from app.core.exceptions import WeatherAPIException
+from app.core.middleware import setup_middlewares
+
+
+# Set up logging
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
+)
+logger = logging.getLogger(__name__)
+
+
+# Initialize FastAPI application
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    description=settings.PROJECT_DESCRIPTION,
+    version=settings.VERSION,
+    openapi_url="/openapi.json",
+    docs_url="/docs",
+    redoc_url="/redoc",
+)
+
+# Set up middlewares
+setup_middlewares(app)
+
+# Include API router
+app.include_router(api_router)
+
+
+# Exception handlers
+@app.exception_handler(WeatherAPIException)
+async def weather_api_exception_handler(request: Request, exc: WeatherAPIException):
+    """Handle custom WeatherAPIException."""
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={"detail": exc.detail},
+        headers=exc.headers,
+    )
+
+
+@app.exception_handler(RequestValidationError)
+async def validation_exception_handler(request: Request, exc: RequestValidationError):
+    """Handle request validation errors."""
+    errors = []
+    for error in exc.errors():
+        error_msg = {
+            "loc": error["loc"],
+            "msg": error["msg"],
+            "type": error["type"],
+        }
+        errors.append(error_msg)
+    
+    return JSONResponse(
+        status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+        content={
+            "detail": "Validation error",
+            "errors": errors,
+        },
+    )
+
+
+@app.exception_handler(Exception)
+async def general_exception_handler(request: Request, exc: Exception):
+    """Handle all uncaught exceptions."""
+    logger.error(f"Uncaught exception: {exc}", exc_info=True)
+    return JSONResponse(
+        status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+        content={"detail": "Internal server error"},
+    )
+
+
+# Health check endpoint
+@app.get("/health", tags=["Health"])
+async def health_check():
+    """Health check endpoint"""
+    return {"status": "ok"}
+
+
+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 SQLAlchemy.

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
+
+# Import Base from our application to autogenerate migrations
+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
+
+
+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 to handle migrations properly
+        )
+
+        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/ae76d37b4f3c_initial_migration.py

@@ -0,0 +1,63 @@
+"""Initial migration
+
+Revision ID: ae76d37b4f3c
+Revises: 
+Create Date: 2023-09-20 12:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'ae76d37b4f3c'
+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('is_active', sa.Boolean(), nullable=True),
+        sa.Column('is_superuser', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
+        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)
+    
+    # Create locations table
+    op.create_table(
+        'locations',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('name', sa.String(), nullable=False),
+        sa.Column('latitude', sa.Float(), nullable=False),
+        sa.Column('longitude', sa.Float(), nullable=False),
+        sa.Column('country', sa.String(), nullable=True),
+        sa.Column('is_default', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
+        sa.Column('user_id', sa.Integer(), nullable=True),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_locations_id'), 'locations', ['id'], unique=False)
+    op.create_index(op.f('ix_locations_name'), 'locations', ['name'], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index(op.f('ix_locations_name'), table_name='locations')
+    op.drop_index(op.f('ix_locations_id'), table_name='locations')
+    op.drop_table('locations')
+    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 +1,13 @@
+fastapi>=0.95.0
+uvicorn>=0.21.1
+pydantic>=2.0.0
+pydantic-settings>=2.0.0
+python-dotenv>=1.0.0
+sqlalchemy>=2.0.0
+alembic>=1.10.0
+httpx>=0.24.0
+python-multipart>=0.0.6
+python-jose[cryptography]>=3.3.0
+passlib[bcrypt]>=1.7.4
+ruff>=0.0.270
+pytest>=7.3.1