Initial commit: Add EAMCO Service API

- Add FastAPI service for managing oil delivery services
- Implement service scheduling and management endpoints
- Add customer service history tracking
- Include database models for services, customers, and auto-delivery
- Add authentication and authorization middleware
- Configure Docker support for local, dev, and prod environments
- Add comprehensive .gitignore for Python projects

app/auth.py

@@ -0,0 +1,41 @@
+import logging
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from sqlalchemy.orm import Session
+from database import get_db
+from app.models.auth import Auth_User
+
+logger = logging.getLogger(__name__)
+
+security = HTTPBearer()
+
+
+def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(get_db)
+) -> Auth_User:
+    """
+    Validates the Bearer token and returns the authenticated user.
+    Raises HTTPException 401 if token is invalid or user not found.
+    """
+    token = credentials.credentials
+
+    user = db.query(Auth_User).filter(Auth_User.api_key == token).first()
+
+    if not user:
+        logger.warning("Authentication failed: invalid API key")
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid authentication token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+
+    if user.active != 1:
+        logger.warning(f"Authentication failed: user {user.username} is inactive")
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="User account is inactive",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+
+    return user