from __future__ import annotations

from dataclasses import dataclass
from typing import Optional, Dict, Any, List


@dataclass
class LocalEvent:
    event_id: str
    asset: str
    venue: str
    timestamp: float  # epoch seconds
    source: str
    payload: Optional[Dict[str, Any]] = None


@dataclass
class PlanDelta:
    delta_id: str
    timestamp: float
    author: str
    payload: Dict[str, Any]
    signature: Optional[str] = None


@dataclass
class OrderEvent:
    order_id: str
    timestamp: float
    side: str  # "buy" | "sell"
    instrument: str
    price: float
    quantity: float
    provenance: Optional[Dict[str, Any]] = None


@dataclass
class FillEvent:
    fill_id: str
    order_id: str
    timestamp: float
    price: float
    quantity: float
    venue: str
    provenance: Optional[Dict[str, Any]] = None


@dataclass
class RiskCheck:
    check_id: str
    timestamp: float
    result: str
    details: Dict[str, Any]


@dataclass
class AuditLog:
    log_id: str
    timestamp: float
    entry: str
    signature: Optional[str] = None


@dataclass
class PrivacyBudget:
    budget_id: str
    per_signal_budget: float
    leakage_bound: float


@dataclass
class Metadata:
    version: str
    nonce: str
    source_adapter: str