#!/usr/bin/env python3
"""
PlatformIO extra script to compress assets before building filesystem
"""
import subprocess
import sys
from pathlib import Path

def before_buildfs(source, target, env):
    """Hook called before building filesystem image."""
    project_dir = Path(env.get("PROJECT_DIR"))
    data_dir = project_dir / "data"
    
    # Get the script path
    script_path = project_dir / "compress_assets.py"
    
    if not script_path.exists():
        print(f"Warning: {script_path} not found")
        return
    
    print("\n" + "="*60)
    print("Compressing web assets (CSS, JS, HTML)...")
    print("="*60 + "\n")
    
    try:
        result = subprocess.run(
            [sys.executable, str(script_path), str(data_dir)],
            check=True,
            cwd=str(project_dir)
        )
    except subprocess.CalledProcessError as e:
        print(f"Error compressing assets: {e}")
        sys.exit(1)

# Register the hook
Import("env")
env.AddPreAction("buildfs", before_buildfs)