"""
Shared application state for the LMM-Vibes Gradio viewer.

This module centralises mutable globals so they can be imported from any other
sub-module without circular-import problems.
"""
from typing import Any, Dict, Optional
import os
from pathlib import Path

# Global runtime state – mutable and shared across all tabs
app_state: Dict[str, Any] = {
    "clustered_df": None,
    # NEW canonical key for the FunctionalMetrics dict
    "metrics": None,
    # DEPRECATED alias kept temporarily so that untouched modules continue to work
    "model_stats": None,
    "results_path": None,
    "available_models": [],
    "current_results_dir": None,
}

# Base directory that contains experiment result folders. Can be changed at
# runtime via launch_app(results_dir=…).  A value of None means "not set".
# Prefer persistent storage in Spaces at /data/data when available.
_default_base = "/data/data" if Path("/data/data").exists() else "data"
BASE_RESULTS_DIR: Optional[str] = os.getenv("BASE_RESULTS_DIR", _default_base)