from typing import Dict, Any, Optional
from ..client import AEClient

class TransactionsService:
    """Service to handle AE Platform Transactions (Orders)."""
    
    def __init__(self, client: AEClient):
        self.client = client

    def get_list(self, user_id: Optional[str] = None, params: Optional[Dict[str, Any]] = None) -> Dict[str, Any]:
        """
        Get list of transactions (orders) for a user.
        Endpoint: GET /users/{user_id}/transactions
        """
        uid = user_id or self.client.user_id
        if not uid:
            raise ValueError("user_id must be provided either in the method call or client initialization.")
            
        return self.client.get(f"/users/{uid}/transactions", params=params)