"""
Shared application state for the web frontend.
"""

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


@dataclass
class AppState:
    """Singleton-ish shared state for the web application."""

    memory_manager: Optional[Any] = None
    amd_optimizer: Optional[Any] = None
    pipeline: Optional[Any] = None
    broker: Optional[Any] = None
    model: Optional[Any] = None
    trainer: Optional[Any] = None
    broadcast_task: Optional[Any] = None

    connections: List[Any] = field(default_factory=list)
    model_status: str = "untrained"
    training_active: bool = False
    trading_active: bool = False
    logs: List[str] = field(default_factory=list)

    def add_log(self, message: str):
        """Add a log entry (capped at 500 lines)."""
        self.logs.append(message)
        if len(self.logs) > 500:
            self.logs = self.logs[-500:]