init commit

shared/auth.py

@@ -0,0 +1,68 @@
+"""
+Authentication utilities for all services.
+This module provides common authentication functionality to avoid circular imports.
+"""
+
+from datetime import datetime, timedelta
+from typing import Optional
+import jwt
+from jwt.exceptions import InvalidTokenError
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from passlib.context import CryptContext
+from shared.config import settings
+
+# Password hashing
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+# Bearer token scheme
+security = HTTPBearer()
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """Verify password against hash."""
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    """Get password hash."""
+    return pwd_context.hash(password)
+
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    """Create access token."""
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=15)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
+
+
+def verify_token(token: str) -> Optional[dict]:
+    """Verify and decode JWT token."""
+    try:
+        payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
+        user_id: str = payload.get("sub")
+        if user_id is None:
+            return None
+        return {"user_id": int(user_id), "email": payload.get("email")}
+    except InvalidTokenError:
+        return None
+
+
+async def get_current_user_from_token(credentials: HTTPAuthorizationCredentials = Depends(security)) -> dict:
+    """Get current user from JWT token."""
+    token = credentials.credentials
+    user_data = verify_token(token)
+    
+    if user_data is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Could not validate credentials",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    return user_data

shared/cache.py

@@ -0,0 +1,42 @@
+import redis.asyncio as redis
+from shared.config import settings
+
+# Redis connection
+redis_client = redis.from_url(settings.REDIS_URL)
+
+
+class CacheService:
+    @staticmethod
+    async def set(key: str, value: str, expire: int = 3600):
+        """Set cache with expiration"""
+        await redis_client.set(key, value, ex=expire)
+    
+    @staticmethod
+    async def get(key: str) -> str:
+        """Get cache value"""
+        return await redis_client.get(key)
+    
+    @staticmethod
+    async def delete(key: str):
+        """Delete cache key"""
+        await redis_client.delete(key)
+    
+    @staticmethod
+    async def exists(key: str) -> bool:
+        """Check if key exists"""
+        return await redis_client.exists(key)
+    
+    @staticmethod
+    async def set_location(user_id: int, latitude: float, longitude: float, expire: int = 300):
+        """Cache user location with expiration (5 minutes default)"""
+        location_data = f"{latitude},{longitude}"
+        await redis_client.set(f"location:{user_id}", location_data, ex=expire)
+    
+    @staticmethod
+    async def get_location(user_id: int) -> tuple[float, float] | None:
+        """Get cached user location"""
+        location_data = await redis_client.get(f"location:{user_id}")
+        if location_data:
+            lat, lng = location_data.decode().split(',')
+            return float(lat), float(lng)
+        return None

shared/config.py

@@ -0,0 +1,53 @@
+import os
+from pydantic_settings import BaseSettings
+from typing import Optional
+
+# Load .env file manually from project root
+from dotenv import load_dotenv
+
+# Find and load .env file
+current_dir = os.path.dirname(os.path.abspath(__file__))
+project_root = os.path.dirname(current_dir)  # Go up one level from shared/
+env_path = os.path.join(project_root, ".env")
+
+if os.path.exists(env_path):
+    load_dotenv(env_path)
+    print(f"✅ Loaded .env from: {env_path}")
+else:
+    print(f"⚠️  .env not found at: {env_path}")
+
+
+class Settings(BaseSettings):
+    # Database
+    DATABASE_URL: str = "postgresql+asyncpg://admin:password@localhost:5432/women_safety"
+    
+    # Redis
+    REDIS_URL: str = "redis://localhost:6379/0"
+    
+    # Kafka
+    KAFKA_BOOTSTRAP_SERVERS: str = "localhost:9092"
+    
+    # JWT
+    SECRET_KEY: str = "your-secret-key-change-in-production"
+    ALGORITHM: str = "HS256"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
+    
+    # App
+    APP_NAME: str = "Women Safety App"
+    DEBUG: bool = True
+    API_V1_STR: str = "/api/v1"
+    
+    # External Services
+    FCM_SERVER_KEY: Optional[str] = None
+    
+    # Security
+    CORS_ORIGINS: list = ["*"]  # Change in production
+    
+    # Location
+    MAX_EMERGENCY_RADIUS_KM: float = 1.0
+    
+    class Config:
+        env_file = ".env"
+
+
+settings = Settings()

shared/database.py

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+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy import Column, Integer, DateTime, Boolean
+from sqlalchemy.sql import func
+from shared.config import settings
+
+# Database setup
+engine = create_async_engine(
+    settings.DATABASE_URL,
+    echo=settings.DEBUG,
+    future=True,
+    pool_size=20,
+    max_overflow=30,
+    pool_pre_ping=True,
+)
+
+AsyncSessionLocal = sessionmaker(
+    engine,
+    class_=AsyncSession,
+    expire_on_commit=False,
+)
+
+Base = declarative_base()
+
+
+class BaseModel(Base):
+    """Base model with common fields"""
+    __abstract__ = True
+    
+    id = Column(Integer, primary_key=True, index=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+    is_active = Column(Boolean, default=True)
+
+
+async def get_db() -> AsyncSession:
+    """Database session dependency"""
+    async with AsyncSessionLocal() as session:
+        try:
+            yield session
+        except Exception:
+            await session.rollback()
+            raise
+        finally:
+            await session.close()
+
+
+async def init_db():
+    """Initialize database"""
+    async with engine.begin() as conn:
+        # Import all models here to ensure they are registered
+        from services.user_service.models import User
+        from services.emergency_service.models import EmergencyAlert
+        from services.location_service.models import UserLocation
+        from services.calendar_service.models import CalendarEntry
+        
+        await conn.run_sync(Base.metadata.create_all)