import argparse
import sys
import subprocess
from pathlib import Path

def run_subprocess(script_name, input_dir, output_dir, indent=None):
    """Helper function to run a parser subprocess."""
    script_path = Path(__file__).parent / "parsers" / script_name
    command = [
        sys.executable,
        str(script_path),
        "--input",
        str(input_dir),
        "--output",
        str(output_dir)
    ]
    if indent is not None:
        command.extend(["--indent", str(indent)])
    
    try:
        subprocess.run(command, check=True, text=True, capture_output=True)
    except subprocess.CalledProcessError as e:
        print(f"--- ERROR in {script_name} ---")
        print(e.stdout)
        print(e.stderr)
        print(f"--- End of Error ---")

def main():
    """
    Main function to orchestrate the low-level data extraction pipeline.
    """
    parser = argparse.ArgumentParser(
        description="Orchestrates a pipeline of parsers for a detailed data breakdown."
    )
    parser.add_argument("--input", type=str, required=True, help="The root directory of the target Unity project.")
    parser.add_argument("--output", type=str, required=True, help="The directory where the output folder will be saved.")
    parser.add_argument("--indent", type=int, default=None, help="Indentation level for JSON output.")
    args = parser.parse_args()

    input_dir = Path(args.input).resolve()
    output_dir = Path(args.output).resolve()

    if not input_dir.is_dir():
        print(f"Error: Input path '{input_dir}' is not a valid directory.", file=sys.stderr)
        sys.exit(1)

    low_level_output_dir = output_dir / "LowLevel"
    low_level_output_dir.mkdir(parents=True, exist_ok=True)
    print(f"Output will be saved to: {low_level_output_dir}")

    # --- Run Extraction Pipeline ---
    run_subprocess("copy_scripts.py", input_dir, low_level_output_dir, args.indent)
    run_subprocess("copy_shaders.py", input_dir, low_level_output_dir, args.indent)
    run_subprocess("parse_project_settings.py", input_dir, low_level_output_dir, args.indent)
    run_subprocess("parse_generic_assets.py", input_dir, low_level_output_dir, args.indent)
    run_subprocess("parse_scenes_and_prefabs.py", input_dir, low_level_output_dir, args.indent)

    print("\nLow-level extraction pipeline complete.")

if __name__ == "__main__":
    main()